The sunn Forum

Sunn Musical Equipment => Q & A => Topic started by: djg on October 22, 2002, 07:59:00 pm

Title: Sunn Coliseum-300 Bass
Post by: djg on October 22, 2002, 07:59:00 pm

I believe I have a 1982 or 1983 Sunn Coliseum-300 Bass head (Bought it used and it has the serial #K05979 - the Warranty Validation Sticker date is Sept. 1984).

1) Does anyone has a schematic diagram for this amp??

2) Does anyone know of a good place to buy replacement knobs?

3) What is a good lubricant to use on the pots to eliminate "scratchy" sounds?

Thanks!!

Title: Sunn Coliseum-300 Bass
Post by: Geoff on October 22, 2002, 09:05:00 pm

Re: #3 above.

Caig DeoxIT D5 and CaiLube MCL sprays are recommended, especially the former.

The undiluted DeoxIT product is fantastic for stuff like cleaning jacks and tube pins and sockets...also ProGold GxL I believe.

You can get the Caig products at places like Parts Express and Lord Valve.  I've got a link to LV on my homepage.

Good luck!

Title: 1/2 of an answer
Post by: Don T. on October 26, 2002, 10:10:25 am

Hello:
 I have not been able to find a schematic of the preamp. The power amp section is a 20-0166 model and you can use the SA20-21 schematic for it.
Don T.