Help with ##%@% noise gates!!

  • Thread starter Thread starter romanianreaper
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Channel pop is due to leftover voltage in an LDR? Any techs jump in and correct me if that's wrong...but I don't think it can be fixed easily. I still get hiss in any of my amps if the volume is up high enough; when the boost pedals are engaged. My 67 stays super quiet though, while the 72 is hissy almost as bad as the video. But that hiss is evident when I'm playing at ear dissolving levels...I don't know how you can get rid of it. Haven't tried a Zuul though....but it's the same circuit as the KK JCM 800 no? I boosted that amp as well, and still some hiss.
 
Racerxrated said:
Channel pop is due to leftover voltage in an LDR? Any techs jump in and correct me if that's wrong...but I don't think it can be fixed easily. I still get hiss in any of my amps if the volume is up high enough; when the boost pedals are engaged. My 67 stays super quiet though, while the 72 is hissy almost as bad as the video. But that hiss is evident when I'm playing at ear dissolving levels...I don't know how you can get rid of it. Haven't tried a Zuul though....but it's the same circuit as the KK JCM 800 no? I boosted that amp as well, and still some hiss.
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My wife notices the noise got more pronounced the closer I was to the amp. Makes sense of course but wirh two lines gated, shouldn't be any issue. I've seen some folks have had issues wirh hiss in the gate
 
I got the exact same amp and use an HX stomp in the loop with the noise gate and it is quiet as a mouse. And i crank that mofo in the garage with my band. No issues at all. Except at certain spots when facing my other guitarist i will get a squeal or two but very quiet. I try to avoid those spots when we have tight breakdown sections going on.

Hiss will be eliminated by the gate in the loop, bit the hum has to be a ground issue somewhere, now that needs some figuring out. Like mentioned before, start with amp gate alone and work from there. Been there done that man, ooof, can be tricky.
 
Noise gate in loop definitely kill this noise but there is another cause of preamp hiss. I will start with amp connected on separate outlet and find out if hiss/hum increase with more pedals connected. Maybe it is combination noisy preamp tubes and natural amp 'waterfall'.
 
romanianreaper said:
Not my video but this is what is is like

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FYI, the guy in this video has the blue and red volumes just about at fucking noon, which is WELL beyond the point of poweramp breakup point with that amp. Of course the amp is going to make that kind of noise when set like that. Just about any other amp dialed in for the same gain levels, without a built-in gate, will sound similar. Absolutely nothing wrong with that amp.

The thing is, at that ludicrous volume, even that "apparently" significant amount of noise is actually effectively negligible. If that cab were to be properly mic'd and mixed for that output level, that noise, AND the pops, wouldn't even register in the monitors. That's how loud that amp has been set.

To summarize, that video is deceptive bullshit.


Hey @romanianreaper, how are your volume knobs set on your amp? Also, what specific power supply are you using to power the decimator?
 
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romanianreaper said:
Yeah see, I have mine setup like that. I plug I to the pedal, first in the chain, then have the effects loop going in. Even on my clean channel, I'm getting noise. It is like something isn't grounded. It is not horrible but I want as quiet as possible.
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It definitely *sounds* like a ground issue somewhere.
 
So definitely is something associated with the noise gate and/or Decimator G-String. I unplugged my guitar chain from the front of the amp and noise was there. I unplugged the cord from the effects loop going into the Decimator and the noise went to silent. When I unplugged the out back to the effects loop, it didn't change the noise.
 
on my bigger rig, i used to simply run 2 (cheap) gates, one early in the chain and one jn the effect loop. silence.

i think they are the clones of the isp mini, and were like $33 each
 
You are creating a ground loop. You really should not need two gates, one thru the loop should be enough. Running your. guitar directly into a gate really does nothing but mute string noise. Anything after that, if it is noisy will still be noisy.

one thing you can do, is take one of those fx loop cables and remove the shield connection at one end of one of the cables. Unsolder one of the plugs shield connection. Old school trick for a ground lift. You may have to experiment which direction that cable goes and whether it is in the send or return path.
 
tonedover said:
on my bigger rig, i used to simply run 2 (cheap) gates, one early in the chain and one jn the effect loop. silence.

i think they are the clones of the isp mini, and were like $33 each
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This is how I used to do my main rig.
An NS-2 in front(because I developed my playing around it decades ago)and a decimator in the loop(on just enough to get rid of the hiss).
Only started using one gate when the ISP G-string came out...and only because I don't REALLY want to use any pedals at all.
 
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