Princeton Chorus SS Board Advice Needed

[gbono]

I think your initial question was a touchy volume control on the amp. If you look at the schematic for this amp the volume control pots are "B" taper - i.e. linear slope. Unfortunately, we hear increasing sound amplitude in a non-linear fashion. Not sure if this was a marketing ploy by Fender since I always here people complain about the SS amps from the 80's and 90's being too loud and they can't be turned down. Changing to an "audio" taper/slope will help this issue.   

[MurphyPeoples]

Changing to an "audio" taper/slope will help this issue.

If anyone has done this and knows of the part number, I'd be grateful for the info.

[galaxiex]

Not sure but it might help....

The link I posted in post #3 has articles for fixing the HRDX volume problem, same problem, use of a linear pot instead of log.

Here's the link again...

http://hotroddiy.com/howtoarticles.php

Read the article "Controlling the Hot Rod's Volume" go to "Master Volume Mod" within that article.

also see..... "James E Vanden Berg Mods, The"

[phatt]

Just rereading the first post I think the issue might be *Volume jump* likely due to a cracked pot track or cold solder join on the pot mounting, either way a new pot will fix that.
Phil.

[MurphyPeoples]

Not sure but it might help....

The link I posted in post #3 has articles for fixing the HRDX volume problem, same problem, use of a linear pot instead of log.

Here's the link again...

http://hotroddiy.com/howtoarticles.php

Read the article "Controlling the Hot Rod's Volume" go to "Master Volume Mod" within that article.

also see..... "James E Vanden Berg Mods, The"

Bless you for that info! Brilliant.

[donnie]

I had one of those amps a while back. If I recall correctly, I changed the volume pots to logarithmic to get better volume control.

Sent from my SM-N910V using Tapatalk

[MurphyPeoples]

Thought I'd give a final update. I changed out the jack with the "low cost" model to which I provided a link early. At half the price, they came in looking great, and once installed worked PERFECTLY.
I D5'd out all pots, and reflowed the soldier to each one plus the Caps. When I cut the amp back on, it sounded GREAT. No volume issues, and just had that warm Fender tone. Really surprised at how great
the SS Princeton Chorus sounds!

Next Up : Late 1980's SS Pro 185. Same issues.

Glad I bought many extra parts!
Murphy