Hmm, might have helped a tiny bit, but it gets quieter and louder, randomly, on its own, so I don't trust it.
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Hmm, might have helped a tiny bit, but it gets quieter and louder, randomly, on its own, so I don't trust it.
When I first heard of 12-bar blues, and tried it, I couldn't finish. Passed out in bar #7.There's blues lyrics here.
I'm out
Standing in the field...
I'm out
Standing in the field...
With my unserviceable Rumble.....
Nah. Pure chemicalization. I have fond memories of Owsley's air acid.I believe the strawberry ones were induced by another field of "plants"...
No I had not. I just tried it, but it didn't work.
If I plug the cable into "Return" but not into "Send", the noise stops, but so does any instrument Input; it has the same effect at the speaker as plugging in headphones - total silence.
However, if I jumper Send to Return, then wiggle the Send plug, it seems to aggravate the ongoing static. So just maybe there's a connection. I tried running the plugs in and out of the jacks a bunch of times, but no joy.
The noise seems louder when the amp is cold, right after power up. If I let it sit and warm up a while it seems to subside in volume somewhat. It'll be soft sputtering for stretches, then suddenly there's a boiling, popping surge. Very eerie, like listening to sunspots in the radio spectrum. It's almost organic. It reminds me of ionospheric noise in the shortwave spectrum, like there's an antenna inside the amp.
Brian

I just connected FX Send from this amp to FX Return on my "clean" R200, and sure enough, the static comes out of both speakers now, again with Gain/Master turned to 0.Thanks for tryin', Brian.
I wonder, if you connected the FX Send into another amp's FX Return, if the static would come out of that other amp's speaker? That would definitely point to the problem being in the preamp.
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Not sure if that's good news or not. Is there a way to disable FX in the amp? (I assume not.
)No, you can't disable the FX. But, what you're hearing at the FX send is the preamp section of the noisy amp. Try doing the FX send of the clean amp to the return of the noisy amp. If that gets rid of the noise, it is the preamp section of the noisy amp where the problem would be.I just connected FX Send from this amp to FX Return on my "clean" R200, and sure enough, the static comes out of both speakers now, again with Gain/Master turned to 0.Not sure if that's good news or not. Is there a way to disable FX in the amp? (I assume not.
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I did, and it stops the noise. But of course it also stops the instrument Input, otherwise I could have an awkward workaround.No, you can't disable the FX. But, what you're hearing at the FX send is the preamp section of the noisy amp. Try doing the FX send of the clean amp to the return of the noisy amp. If that gets rid of the noise, it is the preamp section of the noisy amp where the problem would be.
I'm also hearing a 60hz hum, but that goes away with the Gain or Master zeroed, while the static remains. Interestingly, the hum does also get sent to the good amp via the FX Send.


Huzzah!Update: A Breakthrough! In playing with EQ WRT the hum, I noticed the Bass pot seems responsible for the static noise. I turned it all the way down and the low hum was attenuated, but I also noticed an increase in the static while moving the bass pot. So I rapidly swept it end-to-end 0-10 many times, and suddenly the static nearly disappeared! I could cry with joy, as I just spent $450 buying this amp.
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Oh ye of little faith, suggested I blow it up!
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Glad you didn't hafta resort to that(local fireworks laws, etc.).Oh ye of little faith, suggested I blow it up!
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Naw, never that. I'd treat it to some Speer 70-gr TNTs traveling 3800 fps.Glad you didn't hafta resort to that(local fireworks laws, etc.).
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For any FaceBook users here that may be interested, there's a Fender Rumble Club there, too!
Yeah! FB will be the ruination of this Web thread. (Spoken by one who never joined FB or TW or ...)Social media....Flibbity Floo! We much prefer 2001 tech!!!
I checked it out. I've no intention of joining, but there sure were plenty of nice pictures. A lot more people set their 200 and 500 on top of a 1x15 cabinet than I would have thought. Made me kinda wish I still had mine around..
For any FaceBook users here that may be interested, there's a Fender Rumble Club there, too!
I love it when that happens.Update: A Breakthrough! In playing with EQ WRT the hum, I noticed the Bass pot seems responsible for the static noise. I turned it all the way down and the low hum was attenuated, but I also noticed an increase in the static while moving the bass pot. So I rapidly swept it end-to-end, 0-10-0..., many times, and suddenly the static nearly disappeared! I could cry with joy, as I just spent $450 buying this amp.
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