700 RCA Grounding
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also, it does not show star ground going from the left back plane center hole with 3 ground wires going to the DCP, the 1 ground wire going from the same place to the bulk caps copper strip, and the 2 ground wires going from the copper strip to the left channel ground points, nor the 2 ground wires from the right channel back plane to the star ground point in the center of the Left channel back plane, nor the ground wire going from the star ground point in the center of the left channel back plane to the light board. If you wired your amp according to that drawing, it is wrong.
I originally did the WOPL 4 years ago.... and it didn't seem that bad. I have now ventured into using a DSP and working on a tri amp setup.
As I was moving amps in and out I discovered that my currently stock 400 has way less hiss that the wopl 700B ....swapped out a crown xls 202 and same deal , both amps less no load noise than the 700.... I only came across that drawing recently , that has made me think !. .Hmmmm
I did or at least tried to follow the White Oaks instruction that were sent out at the time... Something is a miss ... Do I have a ground where it isn't needed... Missing one ? Dunno! Hopefully someone has a schematic or drawing I can look over ....
As I was moving amps in and out I discovered that my currently stock 400 has way less hiss that the wopl 700B ....swapped out a crown xls 202 and same deal , both amps less no load noise than the 700.... I only came across that drawing recently , that has made me think !. .Hmmmm
I did or at least tried to follow the White Oaks instruction that were sent out at the time... Something is a miss ... Do I have a ground where it isn't needed... Missing one ? Dunno! Hopefully someone has a schematic or drawing I can look over ....
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I appreciate your wanting to do it right. You can search this forum and get much useful info on the subject.
Joe posted in this thread some years ago about star grounding.
https://forums.phxaudiotape.com/threads/zachs-700b-thread.3477/page-9#post-62249
He also produced the attached image of circuit without DCP
I think you have been given some better info within this thread on the subject as well. Please to do your own searching on the subject
Joe posted in this thread some years ago about star grounding.
https://forums.phxaudiotape.com/threads/zachs-700b-thread.3477/page-9#post-62249
He also produced the attached image of circuit without DCP
I think you have been given some better info within this thread on the subject as well. Please to do your own searching on the subject
Attachments
Those 2 schematics of the ground scheme are deceiving. I would not use them for a 700B/II COMPLETLY WOPL'D AMP........ They may work for a partial wopl but not for one with a complete back plane kit, a complete control board kit, and a DCP from Wattsabundant.
Those schematics look like a 700 with a control board upgrade only.
IF, it was also back planes, it would show the ground point from where EVERYTHING gets connected (the center post for the left channel back plane......) When I build a WOPL, I have probably 7 ground wires which attach to the left channel center hole mounting point. There are a thousand pics here in the WOPL section showing that ground scheme. You gotta LOOK!
Those schematics look like a 700 with a control board upgrade only.
IF, it was also back planes, it would show the ground point from where EVERYTHING gets connected (the center post for the left channel back plane......) When I build a WOPL, I have probably 7 ground wires which attach to the left channel center hole mounting point. There are a thousand pics here in the WOPL section showing that ground scheme. You gotta LOOK!
The ONLY grounds you should have are seen here on the left channel back plane. 3 for the DCP, 2 for the right channel back plane, 1 for the bulk cap ground strap, and 1 for the light board which can go to the strap or the star. the direct switch should be eliminated, and the copper crap and all that junk for the zoebel up in the right corner should all be gone.
if you are not running a WattsAbundant DCP, get rid of what you are running, and spend the $99.
It's well worth is, built like a tank, and is pretty much made to run with the WOPL.... Anything else is just junk..... This takes all the guess work out of the wiring since WA show show to wire it with a WOPL........
NUFF SAID
It's well worth is, built like a tank, and is pretty much made to run with the WOPL.... Anything else is just junk..... This takes all the guess work out of the wiring since WA show show to wire it with a WOPL........
NUFF SAID
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Perry I don't do that.. when did it become the standard? I'm thinking when the mono rev G came out?
I run all to the cap buss bar, except the one single ground to that left hand tie point. Must have been a revision since me last build, which has been a good while..
We need Sir Joe here to clear some cornfusing up..
I run all to the cap buss bar, except the one single ground to that left hand tie point. Must have been a revision since me last build, which has been a good while..
We need Sir Joe here to clear some cornfusing up..
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+1... Lee didn't you have one trip and when it did, it really did some smoking on the traces of the DCP - basically sacrificing it but hey that's a shitload better than having to replace entire banks of outputs.
Also guys think about the instantaneous current through the relay contacts just prior to them disengaging, when a failure happens. Running a relay rated at 2 amps is likely going to fuse em, and here comes the 100+ volts right through to yer speaks.
Also guys think about the instantaneous current through the relay contacts just prior to them disengaging, when a failure happens. Running a relay rated at 2 amps is likely going to fuse em, and here comes the 100+ volts right through to yer speaks.
