Sunday, January 10, 2010

Guitar Amplifier Update #2

Well, I am getting more accomplished. Specifically:

  • Cut wood for case and started to assemble
  • Started circuit board to control and jack wiring
  • Designed front panel for all of it, I am not using standard scaling on the Volume control... After all, a volume control that does not go to Eleven just isn't a volume control! (Why use standard increments either?)
Here are the latest pictures:

Note the angle clamp and T-Square. I learned this trick a long time ago: When clamping, to get a true square edge, use a clamp on the angle to squeeze the box so that it is exactly square Before the glue dries!




Ipod jack connection (Black and Red wires) on left and the High Z input on right (Yellow shielded wire).
 
The 1/4" jack for the High Z input.

My thoughts on front panel below



Well, it is time to put the soldering iron up for today. More to follow on the project!
Jules

Sunday, January 3, 2010

Guitar Amplifier Update #1

Well, I have both boards for the pre-amp put together. I am building two of these. So far so good. I also had almost all the parts I need already in the garage. One trip to Tanner Electronics in Dallas completed the list of items. Here are a couple pictures of the PC boards. The old standby, Radio Shack solder in perf boards!

Top of the Board with close up on one of the the Op Amps, a Burr Brown OPA-2134 I bought 100 of these before Texas Instruments bought Burr Brown.


Top of the board again showing the other two dual Op-Amps and the CMOS4049 chip I am forcing from digital into the Analog realm. Below is the bottom of the board.


I also got the wood cut for the case. It will be 18 inches tall, 13 and a half inches wide and 8 inched deep.



More to follow,

Jules