Amp gurus speak up

Amp tinkerers and people who aren't afraid of 700 volts or so in here....

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StrummersOfThunder
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Amp gurus speak up

Post by StrummersOfThunder »

Anyone got a bright idea about trouble shooting a bit of note decal fizz/crackle in Princeton reverb
Cleans are a. O.k but driven I get a pesky few crackles during note decay
Not entirely sure where to start
Tubes are all new

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Re: Amp gurus speak up

Post by StrummersOfThunder »

Research JUST conducted:

I can confirm that spilling half a glass of brothers beer on the amp DOESNT help.

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Re: Amp gurus speak up

Post by GrantB »

what sort of board are the parts mounted on? With these one has to watch ghost grounding through the black fibre board. Any moisture whatsoever and you'll hear what you're describing. As one potential option anyway.
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Re: Amp gurus speak up

Post by bender »

Does beer count as moisture?

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Re: Amp gurus speak up

Post by StrummersOfThunder »

That beer was particularly moist

It's garolite

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Re: Amp gurus speak up

Post by GrantB »

sounds silly, but dry it out in the hot water cupboard....see how it goes
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Re: Amp gurus speak up

Post by bender »

Stick your hair curlers inside it.

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Re: Amp gurus speak up

Post by StrummersOfThunder »

It's been fizzy since i built it

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Re: Amp gurus speak up

Post by sizzlingbadger »

rule out the easy stuff first, change the tubes (one at a time is fine), you won't even need a soldering iron to test that out. New tubes doesn't guarantee anything.
Tube amp and guitar tones straight from 1958… amazing how believable the sounds were back then, even without the modellers...

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Re: Amp gurus speak up

Post by GrantB »

I had this same thing with an old build - and even my '73 Princeton was doing it. In both cases the garolite was to blame. But yes, tube change first.
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Re: Amp gurus speak up

Post by StrummersOfThunder »

Hmmm
The garolite is not that weird shorty floppy black stuff, its nice thick turret board (Clarry and Ryan approved) stuff.
The best way to describe the problem is fizz during the tail decay of notes when over driven.
Given I mainly play clean its not a HUGE issue but occasionally I like to get my rawk on.

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Re: Amp gurus speak up

Post by tubeswell »

So how did the tube swap go?
He who dies with the most toobs... wins

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Re: Amp gurus speak up

Post by tubeswell »

(So who is auto-changing 't-u-b-e' to 'valve' BTW)
He who dies with the most toobs... wins

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Re: Amp gurus speak up

Post by Bg »

the auto correcting thermionic valve robot, John Ambrose Fleming.
So, is that low alcohol or no alcohol at all? mmmm, no alcohol, do you want to try it? Noooooooooo.

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Re: Amp gurus speak up

Post by bender »

tubeswell wrote:(So who is auto-changing 't-u-b-e' to 'valve' BTW)
I have no idea what you're talking about, valveswell.

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