I want silky mush

[cheeseface]

Pleaese suggest possible mods for gibson Falcon ga19 amp to addresse following problem.
Although this amp gives a majestic tone, the attack at the front of notes and chords is VERY fast, brisk, articulate and thus a little harsh for my taste. It yields no sag at all even with it's tube rectifier. Single high notes are very "pointy" but no fat.
Can she be nudged toward the land of smooth creamy silky squashiness?

 

[ImmortalSix]

Re: I want silky mush

Well what kind of pickups are you playing into it?

What brand and year of tubes are in it?

What speaker are you playing through?

 

[cheeseface]

Re: I want silky mush

answer

pickups -Dimarzio Megadrive bridge
Duncan pearly gate neck

tubes -nos sylvania 6v6 drivers
-nos 6eu7 pre amp
-nos Westinghouse 5y3 recto


speaker -tried a few different ones

I think it may be a tone stack issue

 

[kevlar3000]

Re: I want silky mush

Lowered filtering can loosen an amp up nicely. What speaker is in there?

 

[the guy who invented fire]

Re: I want silky mush

I have never had or heard of this issue but I guess I can't say that anymore!

I used to have a GA19RVT...cool amp, Im surprised you are getting no sag...mine was pretty soft in the lows and the tube rec was beautiful.

First off, you have 2 pretty punchy/articulate pickups so that coudl be an issue for you but before you try modding the amp why not add something like a compressor to your chain...bringing down peaks and adding squish are 2 things some comp pedals are known for...maybe somthing like a Dan Armstrong Squeezer clone...

 

[glassman]

Re: I want silky mush

First off...nice amp.

These amps do have a surprising amount of attack due to a very lightly loaded preamp. Changing the cathode resistors from 2.7K to somewhere between 820 and 1.8K will serve to slow the attack considerably and add some give to the amp. 820 will give you considerable squish while 1.8K will be less squishy; your ideal setting will likely fall somewhere in between. You may need to reduce the value of the plate resistors as well to get the voltages up; leaving them low will make the amp have more midrange than it currently does. You may want to try 120K to 180K to fine tune. You can remove the cathode bypass capacitor (20uF@25v) on the power section if you want to increase power tube harmonics.

A compressor might be a better option if you aren't familiar with working inside an amp with dangerous voltages.