Not much going on here, huh...
I´ve just (almost) completed my A15MK2 and I´ll try to report back what I´m doing as I´ll mod the amp a bit.
Would be nice if we could bring this place back to life as it - sadly - seems like MAD has abandoned the ship...
The Madamps are nice desings, but quite hard to build, so let´s help each other out, OK?
- I´ll start by posting drilling plans to "deliturko".
- Alfarre/Stephan: The fat switch is active on both channels in my amp as well. It does not introduce hum in my amp as there´s a hum going on all the time...
(As it is impossible to answer questions like: "There´s an hum in my amp, Whats wrong?" I´ve got a friend helping me with this.)
This mod for a A15Mk1,was posted long ago:
Yes I know A15 Mk1 is intended to be an amp with highgainfeatures, BUT,
1 I like clean Fender sound = Brownface
2 I like bluescrunch
3 1 dont like highgain, to lifeless to my opinion.
Its OK if you disagree, this is just a suggestion.
This is a mod to get an A15 Mk1 as a Fenderstyle cleanamp and with crunchy channel 2 with volumeincreased solo capabilities = ++
A15 Mk1 mods for ”NonHighGain” guitarists
In ++ position, R 18 before gainpot was increased to 1,1 M ,split in 680K with new C11 1nF (decresade to make it less trebelish) in parallell over the 680K resistor connected to ground and a serial 470K. This results in less gain on ++ and less treble.
R 25 reduced to 56K and R26 increased to 56K results in a + position more cruchy/bluesy and ++ position now with proper volumeincrease for solos and less distortion than originally.
R33 reduced to 110 K for totally lower gain on channel 2
Cutting C14 out (V2 made channel 2 to ”lame” and lifeless, took the edge away, so I continue to use C14.
R18 680K increased to 1,1M (680K + 470K)
C11 2,2nF reduced to 1nF
R25 68K reduced to 56K
R26 33K increased to 56K
R33 220K reduced to 110K
Did anyone try it?
Start posting guys!!
