Strange overdrive with vvr

deltacomet
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« on: February 09, 2012, 03:04:05 AM »

I installed a vvr in my ots. All work , good sound in clean. But when in put overdrive on, Isn't the same sound before vvr. I put level and ratio to 10 and my clean channel is louder than overdrive.

How can i have the overdrive back again ?

Put vvr only in my power tube and install ppimv ?

May, i have did something wrong ?

Thanks
Gui


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sduck
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Re: Strange overdrive with vvr

« Reply #1 on: February 09, 2012, 03:44:02 AM »

Based on my very limited reading on this I think you'd want it on the power section instead of V1 on these amps.

http://damacleod.wordpress.com/2010/03/12/installing-variable-voltage-regulator-vvr-in-a-valve-amp/


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plasticvonaband
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Pickin and Grinnin since 1989

Re: Strange overdrive with vvr

« Reply #2 on: February 09, 2012, 07:52:29 AM »

Quote from: sduck on February 09, 2012, 03:44:02 AM

+1 on that. The voltages on the preamp section are very important on these D Style amps. I did alot of experimenting with voltages via my sag simulator and found that lowering the voltages on V1 and V2 had a dramatic effect on tone and gain, not just OD but overall gain


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Overdrive is like peanut butter. Some like it crunchy, some like it creamy.
Bluesmaster 50 2x12 combo and some guitars.

deltacomet
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Re: Strange overdrive with vvr

« Reply #3 on: February 09, 2012, 06:08:26 PM »

Thanks for information. All I have to do is put the vvr on the power section and make a ppimv ? or the ots already have ppimv ?


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