Recent content by fatboy135

V4 triode 1. The V4 topology is similar to a Darlington circuit with transistors. The V4B is an anode follower conected directly to the grid of the V4A, the V4A is a cathode follower. Hope this helps.

Hi, everybody, riding again with boogie. This time with the recto preamp. Some words to explain the problem: I just purchase a second hand recto preamp modded for one of the most " famous " amp tech in Spain. Well my impressions and the impressions of some of my friends was that this preamp...

Nice to see your triaxis working properly :wink:

agree with V2 and V5

on last stages, after the eq, and gain of all the channels

-10 dBu

also the ecc83s an the el84 ;) good job on the triaxis groups with the fan/cooling matter ;)

Yes there are 2 hours since I just repaired an engl for a friend, I also adjust the bias and change the powertubes with =C= 6l6, the preamps tubes I put was a JJ ecc803 and a EH on the first stages and another =C= 12ax7 on the phase splitter, now that dude is the happiest in the world, he was...

=C= and JJ are my favourite power tubes, it is real amazing how an amp could change its attitude just replacing the power tubes

+1 for =C= +1 for JJ +1 for me

I have been working too much :cry: **** GAS I´m spending my life for the GAS

Totally wrong, el84 are used on Class A ( bad called single ended ), Class B, Class AB, 6v6 are also used in that topologies, the only truth is that in class A amps it is better to use el84 due the few watts they dissipate, you could use a 6550 on a class A but maybe you will lost a lot of money...

in orthodoxism terms a class A is not compatible with a push pull topology, but in guitar amps, that terms are very diffuse, they speak on class A, single ended as the same thing and they are a very good aproach, but... in other fields class A and single ended are not just the same, they are...

yes all the devices in your fx loop afects the tone solution: axxess grx4

It must be labeled with the biohazard symbol :lol: