We have 18 boards so far, this is good interest. I have placed the order for the prototype verification boards. I will then have to build an amp with that board and make sure everything works as planned before ordering the full batch of GB boards. I used to gamble and order the full set of productiuon boards from the getgo and got burned too many times. There is about a 1/3 chance that there is something wrong either with the layout, the Gerber file, or a typo on the silk screen, or a missing drilled hole, etc.
We have 18 boards so far, this is good interest. I have placed the order for the prototype verification boards. ....I used to gamble and order the full set of productiuon boards from the getgo and got burned too many times....
X, many thanks. Speaking for my self there is no hurry.
Also X, after you have loaded and tested a prototype board, can you post the final schematic (if any changes) and stuffing guide. I have ordered parts from Mouser as per vunce's premium BOM - so any changes then should be highlighted for the members who have signed up for your GB.
Cheers,
Gary..
Cheers,
Gary..
Hi Gary,
Most certainly! I’ll post the ‘as-built’ schematic like I normally do. I plan to stick pretty close to the BOM values. Vunce has tested much of this already as a pre-proto. This is is not a new untested design but rather one now using nicer components with a little bit more emphasis on high power and lower distortion components.
Most certainly! I’ll post the ‘as-built’ schematic like I normally do. I plan to stick pretty close to the BOM values. Vunce has tested much of this already as a pre-proto. This is is not a new untested design but rather one now using nicer components with a little bit more emphasis on high power and lower distortion components.
I think Vunce used 50v rated caps at 52v (as that was what was in the CRC already). You may want to use 63v for long term use. I think a Class AB amp only needs 10,000uF 63v caps x 4 if using single CRC for both channels. Use 5W 0.22R resistors (or two 0.47R 3W in parallel). For a dual mono CRC's, qnty 4x 4700uF 63v caps are all that is needed.
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