Flubby bass in 1987

[bdc]

I am looking to get rid of flubby bass in my 74 1987...I run the amp with the bass on 1 or 0.. I was told once that a quick component value change at 1st gain stage would take care of it, but can't remember what this mod was. Please help.....thank you.....Think it was a cap change or adding one in parralel or series. I do not want more gain.......

[bill bokey]

Any photos ?

[Colossal]

I am looking to get rid of flubby bass in my 74 1987...I run the amp with the bass on 1 or 0.. I was told once that a quick component value change at 1st gain stage would take care of it, but can't remember what this mod was. Please help.....thank you.....Think it was a cap change or adding one in parralel or series. I do not want more gain.......

The Normal channel (820R/330uF) always sounds like a bloated tuba to me. Try reducing the cathode bypass cap on the Normal channel from 220uF or 330uF (wherever you might have it) down to 4.7uF-22uF.

[neikeel]

I am looking to get rid of flubby bass in my 74 1987...I run the amp with the bass on 1 or 0.. I was told once that a quick component value change at 1st gain stage would take care of it, but can't remember what this mod was. Please help.....thank you.....Think it was a cap change or adding one in parralel or series. I do not want more gain.......

Are you running it with stock V1 (split cathode?) if you are using Bright input (channel 1) which has 2k7/0.68uF cathode caps that should not normally be an issue.

Has the amp been modded, need to see a decent board pic before we get into giving specific advice (some 74 amps had really weird factory components when they must have run out of correct parts.

[Scumback Speakers]

What kind of cab (open/closed/ported) are you using and what speakers? These all make a difference, too.

[Nilo]

'69 lead spec shouldn't have any flubb... You're using the bright channel right?