Vht d-50h tweaks

[Shanedawg]

Hello, I haven’t been on here in a while. I bought a vht d50 on sat. I used it on the gig that night and it sounds very good. I’m running it with an ev .

Vht encourages mods but I haven’t found anything online yet. I’m trying to find a schematic.

I used to have a red plate and my god was it heavenly. I’m wondering where I should start to give the vht that particular growl that the red plate has. I can’t describe that d thing in words but I’m sure you guys know .

I could post a video of me playing the red plate if you want.

If anyone could help out I’d be very grateful!

Thanks!

[talbany]

Why don't you talk to Henry @ Redplate?

Tony

[Shanedawg]

I’ll send him a message. I just didn’t think he’d divulge his magic!

I’m open to other things to try too. Btw. I wanted an x amp on reverb but it didn’t have a foot switch and I didn’t know if it was proprietary.

[talbany]

I’ll send him a message. I just didn’t think he’d divulge his magic!

I’m open to other things to try too. Btw. I wanted an x amp on reverb but it didn’t have a foot switch and I didn’t know if it was proprietary.

Are you talking about the X-Model from VVT Amps?
Tony

[Shanedawg]

Yes, it was a vvt on reverb but the store in md sold it before I could track down a foot switch.

[talbany]

Yes, it was a vvt on reverb but the store in md sold it before I could track down a foot switch.

They have a website all you had to do was call them and I am sure Jim would have sent you one out


https://www.vvtamps.com/

Tony

[Smokebreak]

I had a VHT D50 on the bench for mods the other day. Good sounding amp, owner really liked it but said it wasn't quite open enough, always had to hit it with a pedal to get the top end he wanted.
The amp is a 183 to the letter, except for a few things. The OD trimpot was 50K, instead of 100K, but the series resistance was 270K, so it really made no difference, as that thing gets set relatively low anyways(it is mounted on the back of the chassis). There was also some local nfb added arounmd v1 or v2 cant remember.
But the real change was the snubbers on the OD stages, they were a whopping 330p intead of 25p. I changed them to 25p and 50p I think. It was biased really cold too, 20ma or something. I warmed that up to the usual 30something I like for Fenders
Owner happy.

[Shanedawg]

Thank you very much! 183 huh... I didn’t expect that. Mine is biased at 35 ma. Is this a low or high plate?

I’m getting very good tone as is but I like to tweak a bit.

Selling that redplate was the hardest thing to do to survive but I think the vht will be a good amp for now.

If you want here’s the redplate video. Any suggestions on getting closer to this would be much appreciated.
https://youtu.be/HEcr9qsDsC4

[neskor]

I just ordered one, so when it arrive I will post more pictures with resistor and other element values.
Then we can discuss what to change, upgrade and tweak.

[neskor]

some pictures

[neskor]

more pictures

[neskor]

I tried also to measure some values, it looks like #183 with some changes

[Shanedawg]

Hi Nestor, thanks for the pics. I’m still playing mine stock thru an evm12l. I’m certainly interested in what you come up with.
Shane

[aab0mb]

Are you quite sure about C11? Seems like a lot of low cut along with the .01 they put on the OD entrance. Got any clips? Would love to hear it!

[neskor]

Are you quite sure about C11? Seems like a lot of low cut along with the .01 they put on the OD entrance. Got any clips? Would love to hear it!

you are right, it should be 0.01uF