Soundstream Rubicon 1002

[seankane]

Does anyone have a schematic for this amp? Does anyone have a part number for the gain pots or frequency pot? Also for the Hawkeye pot?


I got the amp working by cleaning the switches and pots but a few are still scratchy sounding and need replaced.

 

[Perry Babin]

The pots appear to be standard Pihier pots. Mouser should have them.

See attached.

 

[seankane]

Thank you.

 

[seankane]

Maybe I'm doing something wrong but when I search Mouser and use the filters to narrow my search it only comes up with shaft mounted potentiometers. These have a shaft that goes through them and is removable.

 

[seankane]

There are 4 100k square pots, 4 50K square pots, 4 10KC square pots, and 2 20KB square pots.

 

[seankane]

Being blue in color and square would they be bourns pots?

 

[Perry Babin]

The brand should be imprinted on the plastic.

 

[seankane]

Here's a pic.

 

[Perry Babin]

They have 'Spain' on them which I associate with Piher (possibly erroneously).

Someone posted the contact information for Jaime that repairs SoundStream and used to sell parts. Hopefully they will again. Maybe he can help if you don't find what you're looking for.

 

[seankane]

I found an old post with his email. I sent a message, I'll see if I receive a response.

 

[barber02]

ACP May have what you want for those pots. They use a U.S. distributor located in Illinois called Vimex.

 

[Perry Babin]

ACP. That's what's written on them, in the photos I have, before 'spain'. I could read the A and the P but not the C.

 

[seankane]

Thank you.

 

[seankane]

Can anyone by looking at the schematic tell me what the purpose of R185 and R219 are? They are burned badly and out of tolerance.


They should read 5.1 ohms. One reads 2ohms and the other 9 ohms.


I have ordered new ones. I just want to know if they are old and have ran hot for along time, or I should be looking to see why they are burned. I have seen other resistors look burned from heat because of a long life of running hot but still within tolerance.

 

[Perry Babin]

They are the zobel resistors. Are the caps in series with them shorted?

If not, the amp was likely abused or was oscillating at some point.