Need advise with simple mods valveking.

Tube or solid-state, this section goes to eleven!
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Borderline
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Post by Borderline »

Heya everyone,

I just have a few quick questions regarding modding my amp and just need some clarfication of a few things. I know how to safely discharge the caps.

The amp is a peavey valveking 20mh and my goal is make the amp a little brighter.

Regarding the picture of the schematic Ive attached, Ive done the following.

1. Changed treble cap C67 from 270pf to 500pf

2. Changed C69 from 470pf to 500pf ( Am I actually making the amp darker here ? )

3. is C70 the bright cap ? which is 270pf. ( should i try a higher value ? )

I like the results but just mainly need clarification on points 2 & 3.

Cheers !!
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valveee.jpg

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blackbunny
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Post by blackbunny »

Can you post the schematic for the Valveking 20 MH? It's pretty confusing trying to figure out what you are asking, using the partial board layout you posted.

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gainaholic
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Post by gainaholic »

Hello everyone. Sorry in advance for hijacking this thread, but it's the only one i've found concerning the VK 20MH. I've read on this website (https://ultimate-guitar-valveking.wikis ... lectronics) that it's possible to decrease the signal muting duration time when switching channels (a thing that has always bothered me) for the old Valveking 112, but I cannot find any mods for the Peavey Valveking 20MH. Does anyone know this circuit? Which resistor should be replaced and with which value if I want to achieve this? I have experience in soldering but I'm not that good at analysing unknown circuits..

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phatt
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Post by phatt »

As *Black Bunny* already mentioned,, Up to you chaps to chase up a schematic. :thumbsup
Email Peavey with the Model and Serial number of your amplifier, I usually get a reply in a couple of days.
Phil.

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okgb
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Post by okgb »

I believe they're fairly free and easy if you ask for schematics, and allot of their " design " decisions are based on maximum value [ maybe not optimal sound ]
so , yeah , do a little digging

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