NewReligion

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  VERVEHAMMER

• Aug 14, 2021

Greetings David Hopkins, Do you service amps in Texas,?
What is your business contact information. Thank you very much. K

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  Dean Swindell

• May 29, 2021

Yes I did the swamp resistors like you do and the reading across the 1 ohm is 27.3.

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  Dean Swindell

• May 29, 2021

At least I found the right power amp schematic; JMP50B.

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  Dean Swindell

• May 29, 2021

Hi David; don't mean to be a pest, but I need a little advice. My mk III bias is too high when turned all the way down, it only goes down to negative 41.5 at pin 5 and 28ish m.v. on the cathode resistors I installed. I'm thinking of upping the value of the resistor going into the pot (R30). What would you do?

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  Dean Swindell

• May 2, 2021

Hi! I was working on my JCM 900 2500 today and noticed it has the JMP51C preamp. I can't beat the schematics out of the bushes to save my life. The B is clearly closer than the A but not really good enough. Do you happen to know where I can get this?

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  Dean Swindell

• Apr 10, 2021

I once turned a Fender Showman into a sort of Boogie MK I. There are plenty of mods out there for that, but I can't find one for the MK II OD circuit (OD after tone stack). You know where I can find this?

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  Dean Swindell

• Feb 27, 2021

Hey what would the JCM 900 Mark III sound like if you disconnect the diodes that are connected almost directly to the input jacks?

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  JamesD

• Dec 16, 2020

Hey David - how does your EVL-50 mod respond to the guitar volume being rolled back a bit for something like a Zeppelin or AC/DC level of gain? The reason I ask is that I just sold a Bray-modded Super Lead because I absolutely could not get a decent lower-gain tone doing so. I realize there will be some loss of highs with a rollback of guitar volume, just wondering how your mod reacts to that. Thanks bro

S

• S

  srvyjm

• Jul 8, 2020

Can you share more info about your Pandora mod on Marshalls (I left you a comment on YouTube too)? I can't believe what phenomenal tone you're getting at such low volumes. I have 4 Marshall amps I'd like to put it into so I can start using them every day- and at gigs- everywhere I play they are FAR too loud- but oh that tone!

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  NewReligion

• Mar 15, 2018

Modding Amps and Wringing Necks...♫

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  herbvis

• Jan 28, 2018

cheers. I always love sharing with others who have the passion.

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  herbvis

• Jan 28, 2018

https://www.soundclick.com/mobile/default.cfm?bandid=1395322 heres a link to my work. The good one is the first one call3d 2017 amp mod