Fender Princeton reverb chassis

[beasleybodyshop]

Does anyone have a chassis dimension sheet for a Princeton reverb? I'm looking for one with layouts for the chassis holes so I can fab one from scratch. Thanks.

[beasleybodyshop]

Never mind I found it-I should really use the search function here more!

[xtian]

Hey, y'all, especially Milkman, when you're interpreting a Blackface Fender with modern build techniques, do you improve the grounding scheme? Fusing? Other things?

[beasleybodyshop]

Hey, y'all, especially Milkman, when you're interpreting a Blackface Fender with modern build techniques, do you improve the grounding scheme? Fusing? Other things?

I plan on running a ground buss across the backs of the pots - much easier than fussing with the brass grounding plate IMO. Im considering wiring in a fuse for the B+ as well as the mains, but this might be overkill as the originals didnt have one.

Any other thoughts on general improvements to the basic fender design here? Ive heard that running a ground lug from between the pot and chassis to a buss wire is the ideal way to go - but with a low gain amp like this, I can't imagine any possible ground loop that would occur from grounding to the pots to rear its ugly head (its good enough for marshall, right? )

Also plan on running the high voltage grounds in one spot, preamp grounds to another - don't know if that is how fender did it in these amps as im still in the planning phase of my build.

[xtian]

I plan on running a ground buss across the backs of the pots - much easier than fussing with the brass grounding plate IMO.

This is exactly the type of old school BS that I hope to improve on. I prefer to make only one or two points of contact for grounding to the chassis (not including the earth ground point).

[NickC]

I used the Larry Ground Scheme on a couple of amps that came out great.

http://i42.tinypic.com/2jaztxt.jpg

[rock_mumbles]

I think it should be against the law to solder to the back of a perfectly good potentiometer ... it's that bad of a practice

[beasleybodyshop]

I think it should be against the law to solder to the back of a perfectly good potentiometer ... it's that bad of a practice

Why do you say that?

[xtian]

I think it should be against the law to solder to the back of a perfectly good potentiometer ... it's that bad of a practice

Why do you say that?

A. It requires a lot of heat.
B. It creates ground loops
C. It offers unreliable connections to the chassis
D. It's a major PITA if need/want to swap a pot
E. Add your own...

[Blindog]

I think it should be against the law to solder to the back of a perfectly good potentiometer ... it's that bad of a practice

Why do you say that?

A. It requires a lot of heat.
B. It creates ground loops
C. It offers unreliable connections to the chassis
D. It's a major PITA if need/want to swap a pot
E. Add your own...

I agree. I like to run the ground buss like Dumble did, behind the pots (but not attached to the back of) and connected to a ground lug near the input jack. I even went against the Fischer way and built my Rocket clone like that and it turned out just fine, very quiet.

Mark