I get the same "hash" when using pedals in front as well(MojoHand DMBL, Tube Screamer etc...) Sounds like sh!t!
Could this be the OT causing hashy brittleness and no girth to the notes?
I have just done another complete rebuild. I used tag-strip for this build using all new components.
The normal channel is super thick and no definition while the bright channel is this. The amp does get loud. I do not get that swirly tube goodness from the amp. very one-dimensional.
It also has a lot of ghost notes.
The circuit is a 1987 with no bright cap on the lead channel volume pot.
Transformers are:
Weber OT W018343(4K Primary, 2-4-8-16 secondary)
Weber PT W022798(720 vct@200ma, 6.3vct@6A), running bias off the rectifier diodes.
Negative feedback resistor is 47k.
Preamp 3 x GT12ax7.
Filtering: 50+50, 33uf, 33uf, 20uf, 16uf.
V1 cathodes resistors are 1k and 3k(did not have 820 or 2k7).
V1 bypass caps are 25uf and .68uf.
V2a cathode R is 1k.
Voltages:
B+ 468, JJ KT77 biased at 35ma.
V1 147, 187
V2 1/7- 168, 6-280, 8-176
P.I. 1-215, 6-212, 2-10, 7-12, 3/8-34
Soundfile:
https://soundcloud.com/emickelson1/plexi-hash-001
https://soundcloud.com/emickelson1/plexi-hash-002
