Exo-metal
Well-known member
Do you prefer higher or lower filtering on a high gain amp?
J
jasonP
Well-known member
exo-metal":2l6e0scg said:
I've played around with filtering and built and modified different tube amp circuits. For higher gain stuff and the now lower tuned guitars I personally like more filtering to keep the attack tight and bold and so the amp tracks as you play, as you start to go down in filtering you may get a little more feel and the amp becomes spongy, looser on the low notes and notes starts to blend together. I've found there is a little bit of a balance to filtering. One thing I'm finding is voltage plays a roll in how much filtering I like in a circuit.
fusedbrain
Well-known member
For high gain, at least 220uf on the mains.
On Marshall style chassis with the 6 cap cans, I've done 2 x 500uf JJ can caps in series ( 250uf ) with excellent results.
I got the idea from Suhr, but it's also a Jose thing as well.
PI is usually 100uf.
Then I'll start with 32uf on all the pre nodes and dial in the feel with the screen filtering, sometimes going back and adjusting the pre nodes up or down.
Negative feedback comes into play here as well, for feel and tone, as do voltages.
There's a reason SLO's and Wizards sound as huge as they do, and it's in the power supply design. Different approaches, but same big punchy room-filling result.
At the base level, all a guitar amp is doing is modulating the DC power supply to produce an AC output.
The power supply IS the amp.
YMMV
On Marshall style chassis with the 6 cap cans, I've done 2 x 500uf JJ can caps in series ( 250uf ) with excellent results.
I got the idea from Suhr, but it's also a Jose thing as well.
PI is usually 100uf.
Then I'll start with 32uf on all the pre nodes and dial in the feel with the screen filtering, sometimes going back and adjusting the pre nodes up or down.
Negative feedback comes into play here as well, for feel and tone, as do voltages.
There's a reason SLO's and Wizards sound as huge as they do, and it's in the power supply design. Different approaches, but same big punchy room-filling result.
At the base level, all a guitar amp is doing is modulating the DC power supply to produce an AC output.
The power supply IS the amp.
YMMV
R
Racerxrated
Well-known member
^^^ I agree with the previous 2 posts; I seem to enjoy a more aggressive tone that almost always coincides with higher filtering, and higher voltage PTs.
J
jasonP
Well-known member
Racerxrated":vkex9aam said:
I really enjoy higher voltages for more aggressive tone, being more dynamic and typically playing amps with high voltages I gravitate towards as they to my ears don't have the feeling of giving up when starting to turn the volume up loud.
CornNutz
Well-known member
I prefer whatever sounds/feels right for a particular circuit.
For example put large preamp filter caps in a SLO, and it's WAYYY too bassy, get's muddy, and pick attack suffers.
Not a one size fits all scenario from my experience.
For example put large preamp filter caps in a SLO, and it's WAYYY too bassy, get's muddy, and pick attack suffers.
Not a one size fits all scenario from my experience.
Monomyth
Well-known member
I prefer what most people call metal panel spec, even the 56k balancing resistors on the screens give a nice sag, sometimes people up these to 220k, 470k etc but the grease dries up, a lot of bass in the pre and a higher voltage is better for higher filtering imo
