Johan Segeborn | 2 years ago
1980 Marshall JMP Super Lead Modded into perfection by Forsberg Amplification using Daniel's latest British voiced mod! Daniel is describing the mod in his notes below. Ragnar Christensson is playing a Fender Stratocaster and Daniel and are playing my usual 2008 Gibson Les Paul R9 with a Seymour Duncan Alnico 2 Pro in the bridge. We're playing the amp through a Marshall full stack of 8 Celestion G12M25 75Hz Blackbacks.
This mod also contains Forsberg's Power amp which is really effective. Usually a Marshall Super Lead, full stack, loses some bottom end and clarity when played loud. But with this modification it sounds like a train driving at full speed without hesitation! More info on that in Daniel's notes below.
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Daniel Forsberg's notes on this amp:
"My new DF-modification!
Shared cathodes on the first preamp tube (input stage). Shared cathodes sounds a bit warmer imo!
I got the idea from the Bassman 59 and the plexi-era Marshalls.
I’ve always used split cathodes before so this is the first time you’ll hear it in an amp featuring a Forsberg (DF) modification.
Some new filtering and resistor-values for a better “clean up” when turning down the volume on your guitar. It actually works so well that the sound is entirely clean with the guitar volume knob on 3 and then higain when fully up.
This amp also features my new power amp modification! I’ll explain it here:
have developed an universal power amp-modification that can be done to almost any tube amp! 👍
So what’s the difference?
It makes the amp very firm yet dynamic at any volume! More low bass driving the speakers a bit harder and it really feels like added horsepowers! More “omph” in your gut so to speak"
