Derek92994's 700 Ser II White Oak conversion

Could hear some buzzing coming from the WOPL, both Pots turned right down, Pre-Amp switched off. Had to get very close to speakers to hear it, but its there. Wasn't there before. Anything to worry about? Its been powered up for weeks.
 
The buzz is nothing to worry about unless it gets worse..but before we attribute it to the WOPL , plug it into a dedicated plug separate from any cabled devices and check again. Cable TV can have those effects on audio...
 
laatsch55 said:
The buzz is nothing to worry about unless it gets worse..but before we attribute it to the WOPL , plug it into a dedicated plug separate from any cabled devices and check again. Cable TV can have those effects on audio...
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What is TV?

Ok I will Isolate it, but I don't want to power it down :evil4:
 
A buzz almost always means ac interference..hiss is almost always parts related..
 
Be sure to unplug anything from the computer going to the pre....if you have such a thing...
 
laatsch55 said:
A buzz almost always means ac interference..hiss is almost always parts related..
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Lots of AC going left right and centre here, no way to avoid that. I'll monitor the buzz, its not annoying because you almost have to put your head in​ the speaker to hear it. I was working very close to the speaker when I heard it, that's probably why I have never heard it before.
 
I have an Isolated circuit in the house which can be used for testing. When I feel like getting off my ass.

If you power down a WOPL then back up within a minute or two, does it keep that nice sound that normally takes a couple of days from cold start?
 
Well, that amp has traveled a few miles. I certainly didn't hear a buzz when it was here and my K's are kinda efficient. I'll have to look at your THD &N tests and see if there was a bad dip at 60 hz.
 
laatsch55 said:
Well, that amp has traveled a few miles. I certainly didn't hear a buzz when it was here and my K's are kinda efficient. I'll have to look at your THD &N tests and see if there was a bad dip at 60 hz.
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We run at 50hz on the 240 volt line here.
 
derek92994 said:
I have an Isolated circuit in the house which can be used for testing. When I feel like getting off my ass.

If you power down a WOPL then back up within a minute or two, does it keep that nice sound that normally takes a couple of days from cold start?
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Can't say as if I tried that.


Maybe you can be the one to answer that question ....
 
On my phone at work....can't open it. I'm in the machine shop today...I aunt gonna hear no buzz...
 
laatsch55 said:
On my phone at work....can't open it. I'm in the machine shop today...I aunt gonna hear no buzz...
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Ahh, no worries bud. All good. Just started the weekend here. Hows your shoulder and rib?
 
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