Sunn Beta Bass Footswitch

I have a Beta Bass amp as well as the foot switch... it's resting at a practice place.
I also, having been the original owner, have the schematics for the amp, however I don't believe that the amp came with any documentation regarding the foot switch.
Fishheadjoe

 

How many functions does your Beta Bass foot switch do?

 

The foot switch allows you to chose either the "red" channel or the "green" channel... each channel being independant of each other... it also allows you to combine both channels at once.


Bad pic of the amp, with my Traynor on top... I don't have a pic of the switch, but you might be able to make out the two channels in the pic.
Fishheadjoe

 

The Beta Lead footswitch also controlled reverb on/off. I think it may work with the bass.

Man, I miss that amp sometimes...

 

I've read that the beta lead works with the beta bass. Almost picked up an original beta lead switch on ebay.

Yeah that beta bass is a neat amp. Love the drive on that thing but its too weak to be used with the drive at 0.

 

What does the footswitch socket look like??

If it is a 1/4" phone plug, how many "clicks" do you get?? Mono type of footswitch generally shorts the tip to the sleeve via a single switch. The stereo version usually has a second switch that shorts the ring to the sleeve. there are other types that control via logic built into the amp. On an old Sunn I'l bet it's the standard stereo type if it controls two functions.

If you need one you can either make one yourself or you could look at the FS22 from Carvin.

 

The Beta footswitches use a 4 socket connector like this:



You can build your own Beta foot switch if you're handy with these kinds of things.

They can also be found on ebay.

 

Thanks for posting the link Cymatics I'll add the schematic to my files. I like to learn new stuff!

 

yes, but you could spend less and just buy this...

ABY Pedal (LED Version, No decals), Loop-Master Pedals

it would just be run into channel A & B and not into the back of the amp.

 

Not that this helps, but...

This was my first good amp. Bought it new in '79 from Panny's Music in Mt. Pleasant, PA. Separate head and 2 X 15 cabinet. Chris Squire was hawking the line at the time...yeah, right!

Riis

 

Yep. That will do it. AFAIK, the only differences between the Beta Bass and the Beta Lead are the EQ frequency centers and the reverb.

 

the beta bass incorporates three connections on that footswitch connector. what we are doing for our version of this amp is using a standard 1/4" stereo jack and using a standard 1/4" plug for the footswitch cable. if you wanted to modify the connector, you could just find a stereo cabled footswitch?

 

oh yes, of course, i am talking about the MAGMA preamp. not quite to the whole amp just yet.

 

Killer man, glad to hear. Yeah, we are moving forward with this! And yeah, that device would likely work for you.