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  1. gene french

    WOPL 400 Down Under

    this is what joe sent when i set the bias on the 4 fin...
  2. gene french

    WOPL 400 Down Under

    rail fuses should be 5amp agx (1 ")...should be two... 110v fuse is 5amp agc (1 1/4")...check with ohm setting or continuity setting of dvm... make sure fuses are not automotive...ie NOT 32V..... easiest way to check rail is set meter to dc voltage....put black lead on common lead between big...
  3. gene french

    WOPL 400 Down Under

    i did the same thing...the transformer i used measured 82v...for the wopl...
  4. gene french

    phase linear 400

    i believe jim....
  5. gene french

    WOPL 400 Down Under

    thats why they pay you the big bucks!!!
  6. gene french

    WOPL 400 Down Under

    a member, george, suggested a triamp setup .... sine i had a few amps..when i built the speakers i installed the xovers externally..easily removed...i got a dsp (dayton audio 408) with active xover, mixer, and parametric equalizer...i have my old 4 fin driving the woofers, the 8 fin driving the...
  7. gene french

    WOPL 400 Down Under

    looks like you got it covered!!!
  8. gene french

    WOPL 400 Down Under

    the dc is actually higher...the dbtester is holding it down...if you switch to line voltage it would approach 80v...
  9. gene french

    WOPL 400 Down Under

    they could be just using the balanced jacks... i had to change all input rca jacks for gold plated ones...watts used to send replacements with his dcprotect board because of so many bad ones...now they are optional..do you have the dc protect?? if not...and whoever had the shorted outputs in...
  10. gene french

    WOPL 400 Down Under

    if you start removing outputs...wait about 5 minutes before you touch the transistors with a screwdriver...the case of the transistor is the collector...if you short to a fin...it could spark or shock you if you act as ground...ask me how i know...
  11. gene french

    WOPL 400 Down Under

    if the rail fuse on left channel is blown ..remove all outputs marking their position and test transistor by transistor....be careful...this stuff is almost 50 years old...do you know how to do that??
  12. gene french

    WOPL 400 Down Under

    please consult others...i probably know the least in this forum....
  13. gene french

    WOPL 400 Down Under

    check rail fuses...the agx5 ones.. with a meter...i had one that looked just fine... but...it wasnt...blown rail fuse is one sign of bad outputs...
  14. gene french

    WOPL 400 Down Under

    service manual from hifi engine... here it explains output subs and matching... wattsabundant has nice info on matching also
  15. gene french

    WOPL 400 Down Under

    mismatched outputs....you have delcos mixed with fairchilds....you are not supposed to do that within one channel...xpl go with xpl and f pl goes with f pl...within a channel... i did not know that motorola chip mj10524 was a legit replacement for the 909...i knew the 2sd555 was ...its listed in...
  16. gene french

    WOPL 400 Down Under

    it aint a beauty contedt!!!lolol good enough .... i am old .... make plenty of mistakes...bdt saved me more than once .. they helped me restore a 4 fin...i did add fins later to help out the heat...an 8 fin...and i converted a burnt 4 fin to full wopl and added fins so all units have 8 fins...i...
  17. gene french

    phase linear 400

    behind my system...
  18. gene french

    phase linear 400

    lolololol....
  19. gene french

    Gasoline prices Skyrocketing!

    dont build a fence....except around my house....
  20. gene french

    WOPL 400 Down Under

    first and foremost ... build a dim bulb tester... it is more critical to limit amps .... this will save you a few headaches...as you repair.. good luck!!
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