New Circuit Board and Chassis
Douglas becomes Guitars and Amps
Sep|28|2009
I began work on a new amp last month and it is almost to the first power-up. Here are some shots of it taking shape. It is a refinement of the Ga40 circuit I build last summer. I changed the preamp only using the tremolo channel this time and removing the RC filter to give it a less anemic tone. The power section is new with a larger OT and 7591 power tubes for that Ampeg/Stones sound. So this amp is very American sounding but not very Fender. I started by drilling the circuit board, and punching the chassis. This was very time consuming, partially because I redid the layout so there were not capacitors on the underside of the board like the Ga40. This was my first totally original layout and I think it will work well. I am using a capcan on this amp and had to make a trip to Harbor Freight to get a cheap chassis punch that was big enough. Now I know why their chassis punch sets are so cheap. Because they ARE so cheap. Cheaply made that is.
Leave a reply