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previous: GFR From his first interviews, he used ... -- 8/24/1999 11:47 AM

Re: Variac for more voltage or less?

8/24/1999 2:57 PM
Trace	Re: Variac for more voltage or less? I have two Marshalls that I converted to plexis (they are '74 and '75'...,metal faced) and did some other tweaks to. There a tunes on an album I recorded where I only used these Marshalls. You can get "rub against" that kind of gain and tone if the voltage is flying in and around the low 400's. Which I think is basically where his voltage was with the variac (Check out the link Speed posted and do the math...I think that's about right but I'm not the math guy...wish I was! ha, ha) The tunes on the recording I made did not have the .68uF cap across the 820ohm cathode resistor on pin#3 of V2 (now they do and there's A LOT more Van Halen #1 gain) Go to ----> http://asitis.net Click on "Sound Clips" and there are MP3's of about 5 tunes. Download "All I Need" or "Say It Again." These are the Marshall amps I used. Again, all the mod stuff was AFTER I recorded the tunes. The "plexi" amps DO have more gain than the amps I used due to the .68uF cap I mentioned earlier. There are other things I did to make the amps sound "browner" after I recorded those tunes. I'm more happy with the amp's now than before for what ever it's worth. The other tunes have different amps I modded or built. Take a listen as see what you guys think. Again, that kind of gain can be gotten from a plexi with especially if it's running full out but you also have to consider the power tube distortion and the speaker break up into this equation. Trace

8/24/1999 2:57 PM

Trace

Re: Variac for more voltage or less?

I have two Marshalls that I converted to plexis (they are '74 and '75'...,metal faced) and did some other tweaks to.

There a tunes on an album I recorded where I only used these Marshalls. You can get "rub against" that kind of gain and tone if the voltage is flying in and around the low 400's. Which I think is basically where his voltage was with the variac (Check out the link Speed posted and do the math...I think that's about right but I'm not the math guy...wish I was! ha, ha)

The tunes on the recording I made did not have the

.68uF cap across the 820ohm cathode resistor on pin#3 of V2 (now they do and there's A LOT more Van Halen #1 gain)

Go to ----> http://asitis.net

Click on "Sound Clips" and there are MP3's of about 5 tunes. Download "All I Need" or "Say It Again." These are the Marshall amps I used.

Again, all the mod stuff was AFTER I recorded the tunes.

The "plexi" amps DO have more gain than the amps I used due to the .68uF cap I mentioned earlier. There are other things I did to make the amps sound "browner" after I recorded those tunes. I'm more happy with the amp's now than before for what ever it's worth.

The other tunes have different amps I modded or built.

Take a listen as see what you guys think. Again, that kind of gain can be gotten from a plexi with especially if it's running full out but you also have to consider the power tube distortion and the speaker break up into this equation.

Trace

Replies:

Earl Hey Trace,followed your poi... -- 8/24/1999 5:31 PM
Michael Tousek Hey Trace, I tried the link and got... -- 8/25/1999 12:10 AM
tmiller The tunes on the recording I made d... -- 8/26/1999 6:33 PM