In Reply to: RE: Cap change or bypass? posted by Crazy Dave on August 27, 2007 at 12:22:19:
Dave, hi again. The speaker project sounds interesting. Have you looked at Fostex drivers? My amps have been projects over the long haul. Are they ever done? It is so satisfying to get good sound out of something you have labored over. Understanding comes slowly and slow and steady wins the race. If you enter the amp arena hopefully you will learn every single part you incorporate into an amp is important. The parts count may be low but with SET every part counts. Layout is important. The solder you use is important (96.5% tin 3.5% silver activated rosin core) I did a blueprint redo some time ago on a MC-225 I acquired years ago as stock. Power supply caps - all Black Gate. Some would say excessive. I say, not so. Coupling caps Rel-Cap RTX and TFT. Black Gate cathode bypass. Resistors - now precision carbon film 1%, precision wire wound 1%. The circuit calls for 1% at key places. I used them everywhere. No metal oxide. No metal film. It wasn't until the resistor redo that everything clicked into place. The resistors jumped that MC-225 right into another listening dimension altogether. I did not, could not, predict this much change at that point in time. Interesting how all of this goes.
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Follow Ups
- RE: Cap change or bypass? - elektron 08/27/0714:37:39 08/27/07 (1)
- RE: Cap change or bypass? - Crazy Dave 09:37:13 08/29/07 (0)