Phase linear 700. This simple electronic assembly semi-complementary in 1978.

Phase linear 700. This is an absolute beast and will drive any speaker. Feb 21, 2019 · A review of the legendary Phase Linear 700 amplifier, a 350-watt solid-state device that revolutionized the audio world in 1971. Find Phase Linear manuals and schematics in the AK Database PDF Gallery. The second vu meter does not go to 0 when no speaker is hooked up to that channel and the knob is maxed. Any help? Fresh builds WOPL stands for White Oak Phase LinearCompletely Rebuilt Phase Linear 700 Series II with all White Oak Audio Back Planes and Control Board, new Power Supply Caps (2 x 15000uf 160V), new Bridge rectifier, Output transistors (12 each MJ21195G and 12 each MJ21196G), all new Mil-spec Te May 11, 2013 · It's official, the revision D board is now available. We have a great online selection at the lowest prices with Fast & Free shipping on many items! This is the premier Phase Linear PL 700 LED Lightboard upgrade kit on the web. Nov 2, 2006 · The Phase Linear Lynnwood web site lists ON Semi MJ21195/96 as the highest SOA output transistor that they recommend for replacements of originals. Jun 16, 2009 · Can a Phase Linear 700 power amp comfortably operate at a four ohm load? Haven't seen much mentioned about these amps, are they desireable and good performers? Are they compatible with different preamps? :bouncy: Product: Service Manual for Phase Linear 700 direct coupled solid state amplifier. Here's another thing worth Dec 31, 2014 · Used Phase Linear for sale on 400+ second hand hifi sites & shops. Nov 2, 2006 · Ok, I have to admit it the Phase Linear 700 IS a dinosaur but it IS also a very powerful amp running +/-100 volt rails. It has been well cared for. Hi allUp for sale is a vintage Phase Linear 700 stereo 2 channel power amplifierIt's a beast of 350w/channel. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Nov 16, 2020 · Data General Manufacturer: Phase Linear Model: Model 700 B Type: Power Amplifier Years of manufacture: 1974 - 1980 Made in: USA Colors: Silver, Black Original price approx. Before getting started I've Unlike many high power amplifiers, all versions of the Phase Linear 400 and 700 did not provide any speaker protection against amplifier malfunction. 125" length computer grade capacitor size. I own a Model 9500 cd player that I inherited from my best friend who owned it since new and would like to get it looked at. All components are untested and as is. These schematics were scanned from original service manuals. Does anyone know what the conversion parts cost and who does the work? Thanks in advance. He succeeds model 700b. Is the faint noise a ghost or overflow of some kind? Any thoughts on causes? I checked output transistors (by Jul 1, 2024 · Item description from the seller Phase Linear Model 700 Series II I purchased this amp from a coffee house musician in 1984. Hi-Fi Amplifier Phase Linear 700b: 29 images, 1 file to download and 1 review Below are PDF's of the common Phase Linear schematics. Phase Linear Model 700 Series Two Power Amplifier - CLAIR BROS AUDIO quantumheat100 (4820) 99. Aug 23, 2025 · 700 /700B SERIES I COMPLETE OUTPUT TRANSISTOR SET. Offset voltage was almost equal to PS level. Phase Linear 400 Mod: The Phase LInear 400 and 700 amplifiers are among the best ever transistor amplifiers ever sold. It doesn’t affect sound but is a little odd and could be addressed. Check out the URL link for further information about who he is and this specific Sep 3, 2025 · A large amount of help and advice is available on the Phoenix Audio Forum, a key website offering Phase Linear upgrade information, hints and tricks. The 700 Series Two was introduced in 1978 and reflected the design approach of A. more Up for sale is one Phase Linear 700B power amp sounds and great works, but has some obvious wear. THANKS FOR LOOKING. Get the best deals for Phase Linear 700 Amplifier at eBay. Mar 23, 2019 · I have an opportunity to buy a Phase Linear 700 Series 2 for $200 and I cant decide if I should do it. pdf) or read online for free. 00 + - Add to cart Apr 24, 2012 · does anyone here have experience with the 700B from Phase Linear? I am looking at the specs and it's quite impressive. Having. We use to joke that it took longer to get off the shelf and take it apart then to get it back working. 99 + $112. Did you look at the block diagram in the service manual for your model (700, 700B, 700II, Pro700)? Throw in the "Full Comp", "Quasi Comp" Control Boards and the differences in the Back Planes and Meter Boards and you'll have your hands full. I find 700B and 700 series II manuals easily enough but not for the original 700. Testing configuration: - variac 0-240 VAC, - light bulb limiter (60W/230V) in series between the vaiac and the amp, - no inputs, - no load, - the amp doesn May 24, 2015 · I'm working on a PL700b for a friend. This is a new rotary power, on / off, switch for the Phase Linear 700, 5000, 700B. and designed by Bob Carver. Dec 2, 2012 · From the moment when my friends started to listen to Phase Linear ‘old school sound’ at my place, from time to time I am given a challenge to bring the 700 model amp to Poland and run quick inspection before delivery to their home audio systems. Learn about its design, features, performance, and legacy from Bob Carver and The Absolute Sound. A 400 with the driver board marked 14 and a 700B with a PL 20A driver board. I am just curious as to those that have listened to this extremely quite/powerful amplifier. Nov 24, 2024 · Manual Library / Phase Linear Phase Linear 700 Stereo Power Amplifier (1 review) Get the best deals for phase linear 700 series at eBay. This is the factory service manual, includes several bulletins and a bonus larger schematic diagram, offered in PDF format for immediate download after payment/checkout. Use Hifi Shark to monitor pricing and global availability Aug 25, 2023 · SERVICE MANUAL SET FOR PHASE LINEAR 700 700B AND 700 SII VIA USB FLASH DRIVE FANTASIA AUDIO (14166) 100% positive May 21, 2017 · phasel linear 400 back in the 70's the 400 and 700 were the cheapest for the most watts. The Phase Linear 700 power amplifier revolutionized Hi-Fi when it was introduced in 1972. 00 Find great deals on eBay for Phase Linear 700 Series. 00 + $102. Email or call us if you have a Phase Linear power amplifier that requires service. Use Hifi Shark to monitor pricing and global availability May 14, 2024 · Phase Linear Phase Linear 700 Amplifier Solid state for sale. The brand's signature Phase Linear technology ensures a smooth and clear audio experience. The previous owner informed me that he had this amp recapped and other issues fixed about 4-5  The 700 Series Two was introduced in 1978 and reflected the design approach of A. Before getting started I've Jun 12, 2011 · Have a PL 700 that works on left channel perfectly. Will ship same day purchased in a professionally packaged box. The large number of output transistors allows for music to to spend more time in the Get the best deals for Phase Linear 700 at eBay. FREE SHIPPING ON ADDITIONAL SETS PURCHASED. POWER AMPLIFIER The Phase Linear Model 700 consists of two independent direct coupled linear power amplifiers combined to form a single, dual channel unit capable of extremely high power output Please refer to the schematic diagram (Illustration 7) tor the following circuit description of the individual power amplifier. 92K subscribers Subscribe Dec 30, 2004 · I've worked on a boat load of Phase Linear 700B's. SS amps can get it into the hundreds easily. positioners and linear applications. Cannot find the reason. I will never buy a refurbished one. Should I really fear this amp? Do I really need to rebuild it completely to eliminate the chances of blowing my speakers? I would Since Phase Linear amplifiers began production several years ago we have incorporated several dif- ferenct types of output transistors and a few variations on output driver transistors. This amp appears to work well and it sounds great. It retailed for $700. Includes our original Performance Verification Report and a copy of the owner's manual. What are your thoughts? Rob 4 days ago · Phase Linear 700B Stereo Amplifier. cooling package is very necessary to avoid the beginnings of some issues, but its not a cure all. Parts for compete recap of all the electrolytic capacitors. Has some cosmetic wear. W Phase Linear Model 700 Series II Two Audio Standard Amplifier - Powers On Read $1,500. I would rather spend $500 on A Crown or QSC amp. Same board, just mine is slightly re-configured for full comp operation vs quasi-comp. Condition is Seller refurbished. With its classic design and sturdy construction, this amplifier is built to last. 00 or Best Offer Aug 20, 2025 · Up for sale here is this new Schadow SDU3P power switch. Does anyone know? I found one post that says they were "held to better specs than the basic amp coming off the line and Clair would test them when received and if Dec 19, 2021 · The original Phase Linear 700 had a fairly well-deserved rep as Flame/Blaze Linear for output transistors blowing up and shorting the B+ rails to the speaker terminals. Transparent latency output signal. Didn't go as expected :- ( I have way too much DC measured on outputs (ca. Functionally, the VU meters were replaced by red LED meters, with a single volume control under each meter. P. YOU WILL ALSO RECEIVE (1 ) COMPLETE SERVICE MANUAL IN HIGH RESOLUTION PDF FORMAT, (24 )NEW MICA INSULATORS AND. Incredibly powerful amplifier for its size and weight. The no. (Bob) Carver’s claims for it seriously. This simple electronic assembly semi-complementary in 1978. With 350 watts per channel it soon became the standard amplifier used in recording studios, sound Description The Phase Linear 400 is the most advanced amplifier that today's technology can produce. This may be the actual first Phase Linear 700 ever produced! One of a kind!Let's look at the details:1) The Serial number label is 1170 - 001A. The second amplifier released was the Phase Linear 400 with 200 watts per channel. In 1969, while pursuing his Masters Degree, he built a 700-watt amplifier prototype housed in a coffee can. This is the Amplifier everyone wanted in the early 1970's! This was the first BIG amp done by Phase. Across both zeners very low readings Phase Linear; Edmonds manufacturer in USA, Model types from United States of America , 39 radios, 35 pictures, tubes, radio technology, schematics Dec 18, 2005 · One quirk - it's clearly a first-model Phase Linear 700 (asymmetric front, matches the PL0171 board layout, the caps are "lying down" instead of mounted upright on the board, etc. This is part two of a two-part documentary showing the complete rebuild and upgrade of a very early ex Vintage 1970’s Phase Linear 700 Series II Incredibly smooth and powerful 360 watts / channel This is a vintage amplifier, while it has been thoroughly tested and serviced - please be aware of this unit being 50+ years old Please don’t hesitate to reach out with any questions or to make a reasonable offer. 2 days ago · WOW=VINTAGE Phase Linear 700 Stereo Power Amplifier 700 watts rms-8 ohms INCLUDED IS THE MATCHING PHASE LINEAR MODEL 2000 PRE-AMPLIFIER BEEN SERVICED AS WELL Condition Used - like new A REAL' Jun 27, 2014 · I'm working on a Phase Linear 700-II for a friend. Maybe a pair of them. Get the best deals for Phase Linear 700b at eBay. Gallery Phase Linear Gallery Preview of PHASE-LINEAR 700 SERIES SM [1st page] Click on the link for free download! Sep 13, 2021 · Such class AB amps in the 300-700 w/ch variety are cheap these days, as bands don't want to carry a 80 lb chassis to set up & tear down every night. This series was developed by AP Van Meter after the departure of Bob Carver. The direct coupled ones are even higher. Free shipping on many items | Browse your favorite brands | affordable prices. It was first introduced in the 1970s and became renowned for its high power output and solid performance, making it a favorite among audiophiles and professional audio engineers. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Jan 18, 2025 · There is 4 models of 700 and schematics for all 4. He has one Mar 26, 2025 · PHASE LINEAR 400 OR 700 SERIES I METER LAMP REPLACEMENT KIT. With up to date semi's, a real actual power supply with some real actual caps instead of the dinky doos they used plus some other mods I wonder if this dinosaur could be brought back alive to the higher performance standards Deze video gaat over Phase Linear 700 Series II Jesse Jul 17, 2024 · THESE OUTPUT TRANSISTORS ARE MATCHED TO FIT THE PHASE LINEAR SERIES II 700 POWER AMP. Rated at 350 watts per channel. Both units have one output shorted. The only issue I am aware of is the on/off switch doesn't work. The relay circuit senses a DC voltage at the output of each channel and quickly disconnects the speaker. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Phase Linear Service Manual for ANY Phase Linear model. Phase Linear Audio Schematics & Service Manuals. Nov 4, 2010 · Just starting to work on my first PL units. PHASE LINEAR. Made in the United States, this power amplifier boasts a impressive sound quality and power output. [1] The next product was the Phase Linear 4000 Series Auto-correlation Pre-Amplifier introduced in 1973 and manufactured through 1978. Designed by Bob Carver, when PL was in their Heyday! The 700 boasts at 300 Watts RMS, and intended to ROCK 350 p/channel. However the back of the mains transformer has 700 "B" in the model number box. THESE OUTPUT TRANSISTORS ARE MATCHED TO FIT THE PHASE LINEAR SERIES II 700 POWER AMP. This amp works better than new. Solid and stable over the original. It came from an estate and was part of a full Phase Phase Linear 700 II Power Amp USED Home / Phase Linear 700 II Power Amp USED $1,299. powers up, VU meters illuminate, etc c. Not the prettiest. com. Vintage Phase Linear Model 700 Series Two Power Amplifier - 360 WPC Pre-Owned · Phase Linear $1,000. Capable of 350W per channel - enough to push our test rig to its max. Remember that when the 350Wpc Phase Linear 700 was introduced in 1970, 50Wpc was considered a powerhouse. More attention was paid to the 700's aesthetics; the unit was undeniably handsome. [3] However, in December 2013, Bob Carver and Jade Design parted ways. Download and learn about the amplifier's features. Use them with benign impedance loads and keep the amp maintained, you're likely to never encounter issues. I'm not sure I would trust a new one at that. The DC offset is near perfect. 00 or Best Offer Explore a wide range of our Phase Linear 700 selection. Jun 26, 2014 · Didn't Pioneer own Phase Linear by the time they produced the SX-1980? Another reason to stay away from later models after Bob Carver left. PHASE LINEAR 700 SCHEMATICS & PCB MASK SET GUARANTEED TO BE 100% RELIABLE OBTAINED BY MEANS OF REVERSE ENGINEERING; NOT A COPY JUMBO FULL TWO CHANNEL 24"X36" (D, A1) SCHEMATICS WITH POWER SUPPLY AND VU METERS SECTION INCLUDED. Are lacking, no protection dc. Bob Carver, one of the co-founders, was a pioneer in audio engineering, who later went on to create other audio brands and technologies. If you’re interested in vintage audio gear or restoring classic amplifiers, this model is a significant piece of audio history. THESE ARE HARD TO FIND SO STOCK UP NOW IF YOU HAVE A PHASE LINEAR SERIES I AMP. While I only use tube audio gear, it is hard to argue with the exceptional quality of a premium audiophile solid-state amplifier such as this Phase Linear 700 Series Two. Shop now for fast shipping and easy returns! Apr 24, 2018 · My 700 Pro is a Jensen-era unit, but the Series II I rebuilt for my friend was still a Phase Linear. It Hi all, I've acquired a Phase Linear 700 power amp - in unknown state except for: a. 00 Shipping Services We offer a wide range of repair, restoration and development services. These consistently provide close to 500 watts per channel and will drive the most difficult loads. : 4'350 DM, 1973 Technical data: Data at "Hifi-Engine": [1] Comments Other models in the same series: Preamplifiers: Phase Linear Model 2000 Series One Phase Linear Model 4000 Series One Power amplifier: Phase Linear Model 200 Phase Nov 16, 2020 · Data General Manufacturer: Phase Linear Model: Model 700 Series Two Type: Power Amplifier Years of manufacture: 1978 - 1982 Made in: USA Color: Silver, Black Original price approx. It has a White Oak Audio LED Card installed. This one must be before the PL0171 board. My Phase Linear 700 claims 1000 as a damping factor. There really isn't a Signal Flow Chart in the Service Manuals but the Schematic is pretty easy to follow. Pretty rare and sought after. Aug 19, 2023 · The original Phase Linear 700 power amplifier. It is als Explore a wide range of our Phase Linear 700 Series selection. ***Note: In the video I say knob for the power I'm r Vintage Phase Linear Model 700 Series Two Power Amplifier - 360 Watt AmpFully tested and 100% functional; this amp features plenty of power and in my humble opinion the best meter display of any amp. Specializing in Carver, Sunfire and Phase Linear, we also service many other brands. Phase Linear 700 II excessive offset - cont. Apr 3, 2021 · Phase linear 700 two amp questions Discussion in ' Audio Hardware ' started by OZl linear, Apr 3, 2021. Guarante Phase Linear 700 II Fresh WOPL Build Lifetime Warranty. Here is a 3 page review done by Audio in 1971. With most of the mods completed on the first amp, I am measuring a voltage 'coupling' or leakage between the primary and secondary. Find top brands, exclusive offers, and unbeatable prices on eBay. It has become the 'go to' location on the web for Phase Linear information and enthusiasts. 40VDC). Reading threads about these amps worries me about my big JBL's. This is the premier and only Phase Linear PL14 or PL20 Universal Control Board Upgrade kit available. 2 KVA transformer and 2 x 10000uF are Jul 11, 2022 · Greg Thread Jul 11, 2022 bias offset phase linear phase linear 700 series 2 pl700ii Replies: 31 Forum: Amps and Preamps C En el primer capítulo de VTA TV les compartimos una review de este mítico equipo de los 70’, Phase Linear Model 700. WOW. It retailed for just under $500. We offer PDF and Booklet service and repair manuals for all brands and models. : 4'950 DM Technical data: Notes Other models in the same series: Preamplifiers: Phase Linear Model 2000 Series Two Phase Linear Model 3000 Series Two Phase Linear Model 3300 Series Two Phase Linear Model 3500 Series May 24, 2015 · I'm working on a PL700b for a friend. Complete recap of all PCBs. I have used it to power my home stereo system since that time. The previous owner stated it has been hardwired to say ON The last 2 pictures are of the other one I just finished a couple weeks ago and using W hite O ak A udio Design parts for the Phase Linear 400/700 line of amplifiers you (or I can do it for you for the cost of parts), can turn this into a killer 500 WPC RMS amp and will be the last amp you will ever need. 1 FREE download site for High End, HiFi, Pro & Vintage audio Schematics & Service Manuals Phase Linear Model 700 Series Two Audio Amplifier. Vintage 1970’s Phase Linear 700 Series II Incredibly smooth and powerful 360 watts / channel This is a vintage amplifier, while it has been thoroughly tested and serviced - please be aware of this unit being 50+ years old Please don’t hesitate to reach out with any questions or to make a reasonable offer. 009% Very Heavy -  100. With the defective transistor out, tests per the service manual for shorts come up OK. " It features high-quality resistors, Wima polypropylene, and Nichicon MUSE capacitors. I found a 700 b rebuilt by an electrical engineering professor who does it as a hobby. It is a professional-class upgrade product, meticulously engineered to look and perform better than the original. Professional grade, "UNIVERSAL" PL14A/B + PL20 main audio board Upgrade Assembly to enhance the quality of the Phase Linear 700 Series Two - Stereo Power Amplifier Power output: 360 watts per channel into 8Ω (stereo) Speaker load impedance: 4Ω (minimum) / Frequency response: 12Hz to 40kHz Total harmonic distortion: 0. 24 ILS 280. . Watts Abundant takes no responsibility for the accuaracy or use of these schematics. Phase Linear 700 (Series Two)Brand: Phase Linear Power Output: 360W into 8Ω (stereo) Frequency Response: 12Hz to 40kHz Distortion: 0. Includes technical specifications, operating instructions, circuit descriptions, schematics, test procedures, and troubleshooting tips. Shop now for fast shipping and easy returns! PHASE LINEAR 700 Service Manual | Download the High Quality Digitized PDF, or order a High Quality Paperback Manual, Tech Sheet or Supplement. A proper rebuild requires a full recap of all PCBs. The circuit Phase Linear 700 Output Relay Installation Procedure Before Beginning The installation is straightforward and easy if you follow the procedure. Purchased from an estate sale. And fully functional Free shipping to 48 lower states in USA Apr 9, 2024 · Phase Linear 700 Series 2 Amplifier Full Comp Amplifier. Both VU meters show signal (see second pic), can hear music on right channel very, very faintly when left is off and right cranked. It has all original Dec 29, 2019 · Hi Friends, I am rebuilding a pair of Phase Linear 700 series II's with new White Oak Audio control and back-plane pcb's. I think the old 100V caps could probably run at 100V. Phase Linear 700 Direct Coupled Solid State Amplifier. So this a a mint 700b and maybe upgraded slightly from original. We have a great online selection at the lowest prices with Fast & Free shipping on many items! American Big Block Muscle Audio! Phase Linear 700B Power Amplifier in immaculate condition with optional wood cabinet. Mar 29, 2019 · This amplifier is so smooth it's no wonder phase linear and most notably Bob Carver have a huge fan base. He went on to found the Carver Corporation in 1979, Sunfire in 1994, and the Bob Carver LLC in 2011 [2] which was sold to Jade Design in June, 2013. Oct 21, 2024 · Phase Linear 700B 2-CH 350wpc @ 8-Ohms Direct Coupled Stereo Power Amplifier AMP 700-B Also available are the Phase Linear 4000 preamp & Phase Linear 5000 FM tuner. (D)S54W SS The Phase Linear 700 series of amplifiers uses a standard 2. Tested to related power on both channels. Que lo disfruten. It will replace the power switch in the Marantz Esotec SC-6, Phase Linear Model 700 Series 2, Fisher CC-3000, and Fisher RS-280, among others. Oct 24, 2002 · How does the Phase Linear 400 compare? I have had one for many years and fire it up regularily and think it sounds very good. I purchased this directly from builder who made it specifically for me. Here is the real story behind what really happened to Phase Linear! 5 days ago · Phase Linear 700 power amplifier project parts. This is a double pull, double throw design, basically 2 switches in one. The 100K Volume pots have been replaced and it has ¼” phone Jacks instead of the RCA input connectors. The Phase Linear 700B exemplifies the robust engineering and high-performance standards of 1970s audio technology. With 350 watts per channel it soon became the standard amplifier used by recording studios, sound reinforcement companies, professional musicians and audiophiles.  I have 1 700 Series II ready, three others will be ready in 2 weeks. 5" diameter x 4. Phase Linear Model 700 Series Two Power Amplifier - CLAIR BROS AUDIO Pre-Owned · Phase Linear ILS 2,684. My plan is to replace all the outputs in the 700B with MJ21196's (20)and put the outputs from the 700B (XPL909's) in the 400 with new Jul 17, 2024 · PHASE LINEAR 700 SERIE II COMPLETE MATCHED OUTPUT TRANSISTOR SET. I was going to check and adjust the bias and offset but the service manuals at hifi-engine and hifi-manuals do not show that very early model. Use Hifi Shark to monitor pricing and global availability History Phase Linear was founded by Bob Carver and Steve Johnston in 1970. Somewhere along the way they changed but I don't know when exactly. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Peavey CS800s, cs800x (square air tunnel in front), and crown XLS402 come to mind. Phase Linear corporation, founded by Bob and Steve Johnston, was created to build and marketing this product. This one has 8 trim pots on the board and the layout is Oct 26, 2021 · So I'm going to look at a Phase Linear 700ii that supposedly sounds excellent. Let me know what you have in mind and I can do it. Set main PS at the stepped level of 10-20-30V and measured DC at outputs. It shared the same distinctive brushed aluminum, dual VU meters front panel style as the 700. Due to the weight of the unit - I am only offering local pickup Thank you! Jul 31, 2013 · For those unfamiliar with White Oak Audio, they specialize in Phase Linear amplifier modifications, one of which being an updated driver board that addresses certain original design and component shortcomings and subsequently bring the 400 and 700 series specifications up to a whole new level Manual Library Phase Linear US audio equipment manufacturer originally started by Bob Carver but later owned by Pioneer Electronics corporation. (According to ON, they have the largest die of any TO-3 power transistor on the market which means they can dissipate more heat and operate more reliably Apr 23, 2024 · Find many great new & used options and get the best deals for Phase Linear Model 700 Series II Two Audio Standard Amplifier - Powers On Read at the best online prices at eBay! Free shipping for many products! May 27, 2025 · Phase Linear 700 Direct Coupled Solid State Amplifier $899. The first amplifier produced was the Phase Linear 700. Phase Linear 700 II Fresh WOPL Build Lifetime Warranty. Jun 17, 2014 · Phase Linear 700 & 400 series II There isn’t much not to love about theses amps. Vintage 1970s Phase Linear 700 Series II Power Amplifier Extremely well regarded vintage amp. Up for sale is a mint White Oaks Phase Linear 700 B build. Jul 7, 2010 · Phase Linear 700 II - excessive DC offset OK, need some help and guidance here. 56 shipping Nov 20, 2024 · This fully restored power amplifier is far more stable, reliable and better sounding than ever and in near mint condition given its vintage. #igtv #phaselinear #aud Can a Phase Linear 700 power amp comfortably operate at a four ohm load? Haven't seen much mentioned about these amps, are they desireable and good performers? Are they compatible with different preamps? :bouncy: He is known for designing the Phase Linear 700, at 350 W per channel the most powerful consumer audio amplifier available in 1972. It's a solid amp but like all stage it does not support light loads. View and Download Phase Linear 700 instruction manual online. Phase Linear 700 series amps have some significant technicall differences depending on what exact model and when manufactured.   I restore test equipment also. One of the Phase Linear flagships. Meters both working as they shou Manuals and User Guides for Phase Linear 700 Series Two. 14- 700B Amplifier SM 08- 400-Rev 6-1981 Amplifier SM 07- 400_SN 000-000 THRU743-300 03- 200 Series II Amplifier SM Phase-linear 700,700b Sm - Free download as PDF File (. My Marantz 2252b is fine unless I try to push, and then you can hear the strain. Made in the U. However allow yourself 4-5 hours and take the time to do a good quality job. Jan 21, 2015 · Its a fine line between bloom and flab though. Oct 28, 2019 · I'm having difficulty finding the exact differences between the Clair Brothers version and the stock Phase Linear 700 Series 2. if I have it switched to the direct coupling inputs, the output power indicator for the right channel shows power going out if I turn up the control beneath it Sep 20, 2023 · I rebuilt a 700-II for a friend that was quasi-comp, my Pro 700 is basically a late 700-II with a black faceplate and its full comp. The ribbon drivers present a very difficult load. The original is a single pull, single throw design. Very nice clean highs, and boomy lows. Apr 20, 2011 · Phase Linear gear is excellent when it works. November 1970, unit Get the best deals for Phase Linear 700 Series II at eBay. Mar 7, 2025 · Acquired a complete basket case PL-700 series one. It was Flame Linears best sounding amp as well. A huge, high quality power transformer backs of the need for transient handling typically needed to reproduce music. Despite Vintage Phase Linear Model 700 Series Two Power Amplifier - 360 WPC Pre-Owned · Phase Linear $1,000. Last I knew there was a factory trained tech or engineer in the Washington State area that services and reconditions these. When it was commercially released in 1971, few took 27-year-old Robert W. Otherwise, great fishing, 2 x 350 WRMS into 8 ohms. Aug 1, 2022 · I'm original ownerWeighing 70 pounds and selling for $749, with a certified output of over 350 watts per channel, the Phase Linear 700 amplifier set the audio world on its ear. Feb 3, 2018 · Phase Linear 700B with modern electronics From White Oak Audio (WOPL stands for White Oak Phase Linear) and the DC Protection Circuit by Watts Abundant. Phase Linear 700 Power Switch Replace. The rail fuse popped, and it seems to have saved the amp. 00 shipping Sponsored Can a Phase Linear 700 power amp comfortably operate at a four ohm load? Haven't seen much mentioned about these amps, are they desireable and good performers? Are they compatible with different preamps? :bouncy: Mar 23, 2019 · There are a lot of horror stories about a Phase Linear 700 and most were true. The White Oak Audio capacitor offering improves on the original capacitors in capacity, voltage rating and temperature rating. ). I would love to hear some feedback from anyone who has experience with these amps. Due to the weight of the unit - I am only offering local pickup Thank you! Aug 19, 2004 · All I know is the 700 put Bob Carver on the map, followed by the 700B and then the 700 two. Aug 10, 2015 · I am planning on starting a "New" vintage System and was exploring the possibility of using the Phase Linear 700/700B/700 II as an anchor of the system. Additional schematics will be listed when available. Original user manual included. Tested and working nicely. Is this correct? A: First and foremost, as with other modern amps, all Phase Linear power amps are direct coupled and have NO electrolytic caps in the signal path. There are elctrolytic caps in the power supply Phase Linear 700B Power Amplifier All pictures are of the actual item for sale. This gentleman is from here in BC and is well know all over for being one of the best. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Phase Linear 700 Complete Rebuild And Upgrade, Part 1. Sale: only $449… Collectible Legacy 1970's: Phase Linear 700 Power Amplifier, just se Tested and Working. The original 700 has off center meters, its sort of a rarity. The Phase Linear 700 amplifier got its name from its combined output of 350 watts per channel. It was inducted into the Hall of Fame in March 2025. Sep 20, 2010 · Phase Linear 9500 Please, if someone has the contact information for Dean and Ed that I keep reading so much about for restoration of Phase Linear stuff, it would be greatly appreciated. Fully restored this thing definitely puts out very nice sound quality. Clean accurate linear signal reproduction. Rated at an astounding 350 watts per channel into 8 ohms! It has been serviced and fully tested. PHASE LINEAR Owners Manuals, Service Manuals, Equipment Specs Phase Linear 400 owner manual Phase Linear 400 service manual Phase Linear 700 II service manual Phase Linear 2000 owner manual Phase Linear 2000 service manual Phase Linear 3000 II owner manual Phase Linear 3000 II service manual Phase linear 4000 owner manual Phase Linear 4000 A solid power amp for the studio. Van Meter, Phase Linear's new design manager. Jul 6, 2017 · For those who have full comp 400II or 700II's and want to bring it into the 21st century (at least regarding a triple EF), I offer a modification that I have been experimenting with. Shipped with FedEx Ground or FedEx Home Delivery. Previously Restored: Small electrolytic capacitors replaced, and all output transistors replaced with Authentic On-Semi. This is part one of a two-part documentary showing the complete rebuild and upgrade of a very early ex Apr 1, 2011 · Phase Linear 700 Although not nearly as popular as the smaller 400, the 700’s claim to fame is that it was the first truly high-powered amplifier. The circuit is an excellent example of both simplicity and sophistication. PHASE LINEAR METERS REQUIRE 4 LAMPS PER METER. I had to fix mine several times (amp and speakers!) and repaired many others in my tech days. The company initially gained fame for its powerful amplifiers, notably the Phase Linear 700, which was one of the most powerful consumer audio amplifiers available at the time. Only includes parts shown. As always, the base unit will have new Cardas RCA'sDC Protection by Watts AbundantNew Back Planes and 14_20 Control Board by White Phase Linear Diagrams, Schematics and Service Manuals - download for free! Including: phase linear 200 power amplifier schematic, phase linear 200ll power amplifier schematic, phase linear 300 power amplifier schematic, phase linear 400 power amplifier schematic, phase linear 700b power amplifier schematic, phlin700b2 2 new , phlin700b2 3 new Jan 1, 2025 · The classic Model 700 by Phase Linear. The amp does work last time I checked and we can test again in I had a Phase Linear 700 Series 2. OK, here is the current situation, not that easy: I've put left channel rail fuses. Mine is also a fiberglass board and I want to say his was phenolic, so better construction on the newer one even if its the same circuit. Dec 1, 2012 · More input on PL amps recapping - this is from Phase Linear site (Phasetek): Q: I've heard that all electrolytic capacitors in the power amplifiers should be replaced with new ones. 350 Watts per channel into 8 ohms This amp has the original xpl909 output transistors and original control board. It is a simple circuit revision that reconfigures the amp for more bandwidth and less distortion. If they do fail they are very easy to repair. This was pulled from a working environment. This amp is powerful and very clean type "A/B" amp. Check out the URL link for further information about who he is and this specific WOW=VINTAGE Phase Linear 700 Stereo Power Amplifier 700 watts rms-8 ohms INCLUDED IS THE MATCHING PHASE LINEAR MODEL 2000 PRE-AMPLIFIER BEEN SERVICED AS WELL Condition Used - like new A REAL' Here is an offering of a very nice WOPL Phase Linear 700 Series ll amp. As the title says, its completely original and currently working fine. Sounds quite nice. WOPL stands for White Oak Phase Linear and is a process an o The Phase Linear 700B is a notable vintage stereo power amplifier designed by Bob Carver. The 700 put both Bob Carver, the amp's designer, and Phase Linear on the hig Jan 2, 2010 · This kit works with all board revisions of the Phase Linear 700, 700B, and 700II series and the transistor sets are unconditionally stable in all versions of these amplifiers. 57 shipping First listen after installing White Oak audio driver board, wattsabundant DC protection relay and new power supply caps and rectifier and new output transist Hi, My friend has a fully restored Phase Linear 700B amplifier. I have used these as replacements already in one of my 700's. A. You will be making connections to the bridge rectifier for AC power. &nbs This Phase Linear 700 Series Two power amplifier works well and is in good condition for its age. Here is something that I don’t see everyday… Phase Linear audiophile gear! In fact, this was my first opportunity to use, repair, and evaluate any Phase Linear gear. Look up Phase Linear 700B to see what it looked like stock. They would get the WOPL treatment and was just wondering what you guys/gals thought about using these. Feb 5, 2005 · Review: Phase Linear 700b Amplifier Category: Amplifiers I have on a mission to find a clean natural sounding amp to power the ALIII. Phase Linear 700 Series 2 amp repair LED peak meter display problem bigslick 2. 00 at the end of its life. One VU meter not working, otherwise tested and fully functional. Massively powerful, bench tested at 543 W@7r5 and 730 W @3r75 1 kHz just below point of clippingDriver board upgraded to the acclaimed White Oak Audio PL14-20 May 23, 2011 · Desperate for a Phase Linear 700 service manual. Can a Phase Linear 700 power amp comfortably operate at a four ohm load? Haven't seen much mentioned about these amps, are they desireable and good performers? Are they compatible with different preamps? :bouncy: Jun 11, 2021 · Classified: FOR SALE - Phase Linear 700 series 2 amplifier asking for $1050. Aug 8, 2025 · Phase Linear 700 amplifier rebuild restoration recap service kit fix repair $185. We take pride in providing our customers with repairs of the highest calibre. YOU WILL RECEIVE 8 # 1784 LAMPS TO FIT YOUR PL-400 OR PL-700 AMP. Aug 20, 2015 · Has anyone else had a chance to hear a White Oak Phase Linear 700B? 1000 watts, dead silent and sounds amazing. Introduced in 1970, it was, for a while, Phase Linear's only amplifier. I have McIntosh now! Phase Linear 700 Series Two Service Manual provides detailed information about troubleshooting, testing and repair. 34 shipping Sep 2, 2024 · Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Note: You are buying reference material in PDF format for use in repair or maintenance of your equipment -- you are NOT buying stereo equipment Used Phase Linear Model 700 Stereo power amplifiers for sale on 400+ second hand hifi sites & shops. This bad boy pumps out a ridiculous 345 watts per channel into 8 ohms. You get damping factors into the double digits and you're doing OK. If you’re into vintage gear that packs a serious punch, this beast is the heavyweight champ you didn’t know you needed. Below are PDF's of the common Phase Linear schematics. Aug 13, 2013 · No description has been added to this video. MCIaudio offers the best in vintage audio equipment from Earthquake Sound, JBL, Threshold, and more. 00 + $12. : 4'950 DM Technical data: Remarks Other models in the same series: Preamplifiers: Phase Linear Model 2000 Series One Phase Linear Model 4000 Series One Power amplifier: Phase Linear Model 200 Phase Linear Model 400 Phase Find great deals on eBay for Phase Linear 700. This one will also replace the PL 36 in FULLY COMPLEMENTARY Series II 400's and 700's Here are Joe's release notes---PL14_20 Revision D Control Board Assembly now available After some extensive beta testing (thanks Lee) on this new board Download the Phase Linear 700 and 700B service manual, a comprehensive guide for qualified service personnel on troubleshooting, repair, and alignment procedures. I know the 700B's May 26, 2014 · Hi all, Looking to feed my JBL L-5's a little more power. He shorted the speaker wires together, and I found a shorted output transistor. Apr 5, 2024 · Thee First high-powered production solid state amplifier. 5% positive May 20, 2018 · Replies 0 Views 314 Oct 9, 2013 tomlinmgt Phase Linear 700B cinderella story and other revelations tomlinmgt Aug 14, 2011 Solid State Replies 5 Views 1K Aug 15, 2011 Nov 27, 2014 · Phase Linear 700 Series Amplifier Specs - Sales Brochures, Owner's & Service Manuals oldphaser Oct 13, 2018 Replies 7 Views 5K May 8, 2024 May 23, 2013 · My buddy dug up a very early Phase Linear 700. Get the best deals for Phase Linear 700 Series 2 at eBay. It doesn't look like it's been replaced, but I can't say for sure. Recently I've started meauring the ripple current under load as part of the checkout. Please ask if you have any questions. See the specifications in photos. more Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. My friend wants it gone through completely as well as having it converted from the original quasi complementary output stage to a full complementary output. Does not include heat sinks, output devices, faceplate bolts, etc. There's no protection for the speakers and if it decides to go unstable, they like to emit DC into the speakers. Thats actually rumoured to be one of the reasons that tube amps sound so different. Ships on the same or next business day, packed securely and insured. With a Fluke DVM between the primary Get the best deals on phase linear when you shop the largest online selection at eBay. Some signs of age throughout. The Model 700 Series II is Phase Linear 700 Complete Rebuild And Upgrade, Part 2. Jul 7, 2010 · Phase Linear 700 Series II - restoration guidelines Before sharing the progress and results of my current Phase Linear renovation project let me post here a wrap-up of many valuable ‘lessons learned’ gathered from various DYI and Audiokarma threads for those who wish and can restore their Phase Linear 700 series II amps. Jan 26, 2012 · Is it a Poodle or a Pitbull? I have a 700b power amp that I purchased a couple months ago in mint condition cosmetically and the few times I used it, it worked flawlessly. We have 1 Phase Linear 700 Series Two manual available for free PDF download: Service Manual Get the best deals on Phase Linear Vintage Amplifiers & Tube Amps when you shop the largest online selection at eBay. This vintage Phase Linear Model 700 Series II audio amplifier is a must-have for any audiophile.  THE BLACK CLAIR BROS AMP IS SOLD BUT OTHER 700B or 700 II AMPS ARE AVAILABLE FOR BUILD. REAL VOLTAGES AND CURRENTS ARE REPRESENTED PROPERLY IN THE FINAL WORK YOU'LL RECEIVE. I've had this on a shelf for many years, I thought I'd do a White Oak upgrade on it, but never did. Comes as shown and will be double boxed for safe shipping. The Bob Carver conceived Phase Linear 700. Shop with confidence. they are known to fry speakers because they didn't work well under stress. cosmetically good, and no sign of excessive heat on the heatsink stickers, no corrosion on internals, etc b. This is the 3rd generation PL700B light board offering from White Oak Audio Design, embodying and enhancing all of the improvements from the prior 2 generations. Here is the summary of one project focused on Get the best deals on Phase Linear Vintage Electronics Parts & Accessories when you shop the largest online selection at eBay. What would be a ball park dollar amount for a working 700 or 700B amp? Aug 16, 2025 · A proper restoration must replace all electrolytic capacitors on all boards. S. Description of Item: 5th generation design, now at Revision E. Preview of PHASE-LINEAR 700,700B SM [1st page] Click on the link for free download! The famous vintage hifi brand was built and developed by Bob Carver only to be sold by Pioneer. Amps, preamps etc built to your specs. Please take a close look at photos to see condition. Please look at all pictures before purchasing, only what is included in pictures is included in sale. Ended up with a series two frame and back plane to replace the damaged original, new White Oak control board, new Watts Abundant speaker protect relay, all new outputs, modified front panel, modified lighting, new main caps, rectifier and buss Data General Manufacturer: Phase Linear Model: Model 700 Type: Power Amplifier Years of manufacture: 1970 - 1974 Made in: USA Color: Silver Original price approx. Which leads me to think maybe its had repairs and/or upgrades at some point No description has been added to this video. I've never had to replace a filter cap although the day is coming I'm sure. NOTE: PRICE APPLIES TO 1 (SET OF 8) PHASE LINEAR METER LAMP REPLACEMENTS AS SHOWN. Phase Linear 700 Series Two Power Amplifier Service Manual Contents: Schematics, Specifications, Test Procedures, Technical Circuit Descriptions, Troubleshooting Guide / Fault Diagnosis, Assembly / Disassembly Guide, Interconnection Diagram, PC Board Layout, Parts List (Dated 1977) (26pages/$20) Phase Linear 700B Restoration: We restore Phase Linear power amplifiers. This unit is sold completely untested & as-is. 009% Damping Factor: 1000 Speaker Impedance: 4Ω (minimum) Input Sensitivity: Signal to Noise Ratio: 110dB Dimensions: 483 x 178 x 254 mm Weight: 20 kg Year: 1978 Price: Upgrade your Phase Linear 400, 700, 700B, and 400/700 Series 2 amplifiers with this professional-grade, "universal" PL14A/B + PL20 audio board assembly. This model was the ultimate monster amp of the 70's and there are almost no other amps of this power in the class AB high fidelity design. -This is a an exact re-print of a classic Audio Review or Brochure. WOPL meaning a total rebuild. THESE DIRECT REPLACEMENT ON SEMICONDUCTOR DEVICES ARE RATED AT 250 VOLTS 16AMPS 250WATTS. I have a line on a Phase Linear 700 (the original, not the later B model) that appears to be an very clean shape, although the seller does not know if Nov 26, 2024 · Front panel fuses and connectors are not stock. The Phase Linear 700B is the kind of amp that doesn't just walk into a room—it kicks the door down. Features: Used Phase Linear 700B Power amplifiers for sale on 400+ second hand hifi sites & shops. 1. Our design improves component quality, PCB layout, and eliminates the infamous "turn on/off thump. THESE OUTPUT TRANSISTORS ARE MATCHED TO FIT THE PHASE LINEAR SERIES I 700 OR 700B POWER AMPLIFIER. rcydq 4tgq acgy g5 9nvfp zd cd4vp hozub p6fqw2x jg