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phase linear 400

  1. Sterling245

    Phase Linear 400 Series 1 Repair Help

    Hi all, Yes, I know what most of you are thinking, another flame linear and I should probably just go ahead and White Oak modify it, but I am really interested in getting this working in stock form. Mine has the PCB14 driver board. The problem: One channel meter is pegged all the time, and...
  2. gwendal

    AR Lst general questions

    Hi everyone So i just acquired a really nice pair of mint AR LST , they are in a really good shape and were always maintened as they were in a pro environnement , i have a few questions that some expert here might know about ! My first question is about the impedance , those are 4 ohm...
    • gwendal
    • Thread
    • ar lst phase linear 400
    • Replies: 4
    • Forum: Speakers
  3. BilboBaggins

    I went to pick up a speaker and an amp. Look what I got!

    On Wednesday night, I saw an ad in Facebook Marketplace for an interesting looking amp with meters. The guy used it for DJing along with a set of likely DIY speakers. I contacted him and he replied, and then, nothing. Finally, I tried again last night. I could come in the morning. Just before I...
  4. Will2225

    Buying advice needed on Phase Linear 400 and Fisher 400c

    Hi I've found locally a phase linear 400 that has been serviced for 350 and a Fisher 400c for 450 with wood case that is working except for the FM radio. Is the phase linear worth 350 considering its been worked on and is up to spec? Also, I the buyer won't allow me to test the 400c because of...
  5. D

    White Oak Phase Linear - Dual Mono Control Board

    Hello Audiokarma, Last year about this time a started a WOPL 400 project, and it lasted until spring of this year. I bought all the kits from White Oak Audio, assembled them, then rebuilt an old beat-up Phase Linear 400 amplifier. The results were spectacular. Fast-forward a year later, and it...
    • drp1003
    • Thread
    • phase linear phase linear 400 white oak phase linear
    • Replies: 2
    • Forum: Solid State
  6. punchback

    My New Early Model Phase Linear 400 w/ 4 Fin Heat Sink

    I’m the proud owner of a new “old” PL400. It seems that it is an early model with a 4 fin heat sink configuration. It also has fuse type lamp to illuminate the meters from the top. This meter illumination apparently prevent me from using the White Oak Audio LED upgrade. Let me know if there...
  7. D

    Phase Linear PL-400 Series One Bridge Rectfier Question

    Hello, I am in the very early stages of my journey to resto-mod one of two PL-400 Phase Linear amplifiers that I own. I am going to do everything. FULL WOPL. White Oak Phase Linear in Full Comp Mode. Backplane boards. Control Board. Light board. Capacitor Kit (ADDED: I went with a different...
    • drp1003
    • Thread
    • phase linear 400 white oak phase linear wopl
    • Replies: 33
    • Forum: Solid State
  8. Dustyballz

    Using dq10's as satellites with miller@kreisel v-75.

    I have dahlquist dq10's powered by a phase linear 400. Will hooking them up as satellites on my miller@kreisel v-75 sub with an 80hertz high pass filter significantly lowerer their power demands.?As they are now running directly off of the phase linear and seem to use all of its power before...
  9. B

    Phase Linear and Sonus Faber

    Hello all, I would like feedback and opinions on the pairing of the Sonus Faber Cremona (floorstander) and Phase Linear 400 ser II. I am researching the Sonus Faber Cremona to potentially acquire for my tube setup, but would also like to utilize them with my solid state, Phase Linear setup. I...
    • briguy986
    • Thread
    • b&w cm6 bowers and wilkins phase linear phase linear 400 sonus faber
    • Replies: 6
    • Forum: Speakers
  10. S

    Phase Linear 400 Fan

    Hi, i would like to share my project with you. A while ago i got myself a PL400 and short while later i dis full WOPL rebuild. I have AR98LSI 4ohm speaker which made my PL hot at high volume. I decided to add a fan to help cool things down. I realized that there is nothing on the market to make...
    • sebtus
    • Thread
    • fans phase linear 400
    • Replies: 10
    • Forum: DIY
  11. A

    Phase Linear 400 - DC offset problem

    I've recently replaced the output transistors on one channel of a PL400 I'm working on but I now have a big DC offset. When I got the PL400, it arrived with no main fuse. On DBT (with fuse) it drew too much current. Measurements indicated that three of the connected outputs on one channel were...
    • audiogymp
    • Thread
    • dc offset phase linear 400 pl400 problem
    • Replies: 139
    • Forum: Solid State
  12. A

    Phase Linear 400 output substitute

    Hi I recently bought a PL400 needing attention. One channel has original drivers and outputs (RCA 410 and XPL909). The other channel has some different components - Drivers are SJ2741 and the outputs are a mix of four PL909 and two MJ15024 - not good. Arrived with no main fuse. On DBT (with...
    • audiogymp
    • Thread
    • output transistor phase linear 400 pl400 substitute
    • Replies: 17
    • Forum: Solid State
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