jporter

This thread has much talk about agc. Compression ratio, threshold, attack and release are pretty understandable to me but how does automatic gain control differ from compression? Might a compression sustainer pedal work by agc? Here's a schematic of boss cs-3, of which I do not understand all that much.

http://www.dirk-hendrik.com/images/cs3.gif

Personally I think building a clone would be rewarding and fun also.

You don't have to go that far. All you need is a compressor/limiter, a small poweramp and a driver.

Fizz

If that setup works, it would be great news! I was wondering about compressors myself and why they have not been advocated more here.

Compressor/limiter

http://www.thomann.de/gb/behringer_cl9.htm

Compressor/sustainer

http://www.thomann.de/gb/behringer_cs100.htm

What's the difference? Is it the limiter I definitely want?

If you really want to build a clone, just download the Sustainiac patents - I'm pretty sure its legal to build one for your own private use?

Good luck though

I've heard its not an easy job building a class-d amp from discrete components and getting it tuned and stable - your layout design will be critical...

Oh and how are you going to find out exactly what alloy is used in their driver core? and when you do, where will you source it from? etc. etc. etc.

Patents are intentionally misleading / omit information, so that's not an option.

Designing a layout is just what is avoided when cloning. Just copy the original. Or does it use integrated circuits not available to the public or are they just too small to solder? Anyway the class d amp is just to save power right? Maybe it could be exchanged with something more traditional while retaining the rest of the circuit. The driver core looks like laminated transformer metal. Unlikely to be an issue.

Personally I think building a clone would be rewarding and fun also.

Hello,

I'm new here. What an awfully complex project you guys have been trying to solve.

Would it not have been easier to clone an existing commercial design?