Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: navdave on December 07, 2010, 01:02:11 am

Title: Fender 5F8 presence control
Post by: navdave on December 07, 2010, 01:02:11 am
I've seen this schem before but never really checked it out. Anyone ever play with one of these before or clone it?
The thing that caught my eye was where Leo put the presence control.
How does this effect and work with the tone stack? Thinking about it, if was
gold it would probably still be in use.
Title: Re: Fender 5F8 presence control
Post by: P Batty on December 07, 2010, 08:12:32 am
I've played a tweed Twin in the past, and it had a lot of "sparkle" on the high end. Whether it was due to the presence control configuration or not I couldn't say.  The amp sounded great, like a supercharged tweed Bassman.
Title: Re: Fender 5F8 presence control
Post by: PRR on December 08, 2010, 05:08:00 pm
Fender was groping with several concepts.

97% of Fender players think he got the 5F6_A_ pretty good.

The 5F8 seems to be almost-there not-quite.

IMHO the 5F6-A is an accident that worked; maybe a mis-wired 5F8 that sounded different.

You could dang-near add a switch to convert this portion from one to the other.
Title: Re: Fender 5F8 presence control
Post by: navdave on December 09, 2010, 12:29:49 am
I'm tempted to play with it just to see how it interacts with the tone stack.


Fender was groping with several concepts.

97% of Fender players think he got the 5F6_A_ pretty good.

The 5F8 seems to be almost-there not-quite.

IMHO the 5F6-A is an accident that worked; maybe a mis-wired 5F8 that sounded different.

You could dang-near add a switch to convert this portion from one to the other.