Peavey Valve King 112 Dynamics/Attack/Gain fuzz MOD

[torcamaniac]

Hi guys,

I'd like to share my VK 112 modification with pictures.
This mod will bypass NR diodes that engage when boosting the gain chanel, tame the fuzz and harsh sounding saturation, and make the amp brighter and more dynamic.

1) Remove or cut D101 and D102 diodes.
Get a 1nF min. 400V (I used Orange Drop 1nF 600V) capacitor and solder it to the legs of resistor R100 (1Mohm).
This will take out the diodes from curcuit and tame the gain chanel, especially when boosted. More natural and tubelike.

2) Replace V1 anode resistor R103 (150 KOhm) with 220Kohm and
replace V1 cathode resistor R120 (1.5 KOhms) with 2,2 KOhm. 1 Watt resistors are fine but I used 5 Watts.



3) I recommend using 12AT7 tube in PI V3.

I also use 5751 NOS Mullard in V1, Ecc83 Tube town in V2 and Nos Jan Philips 12AT7 in V3 and SED C winged 6L6gc power tubes. Replaced the stock speaker with Celstion V30. I also removed the capacitor C149 which is a popular mod with VK users and is supposed to make the amp more high end and brighter sounding. Still deciding if I like this...

:rocker:

[Jazz P Bass]

Nice post.

But I have to add that going to a 5 watt resistor on V1 plate & cathode is ludicrous.

Unless that is all you had.

[torcamaniac]

Nice post.

But I have to add that going to a 5 watt resistor on V1 plate & cathode is ludicrous.

Unless that is all you had.

Yep that's a lot. I had only those at the moment