Re: XLR In & Out EQ/Reverb with Phantom Power

Posted by motterpaul on Apr 01, 2016; 4:29pm
URL: http://guitar-fx-layouts.238.s1.nabble.com/XLR-In-Out-EQ-Reverb-with-Phantom-Power-tp29256p29434.html

I hate to be the "downer" guy but it sounds like he wants a mixer he can buy for far less trouble (and possibly even cost) of what you can build for him. That is just the reality, because there are so many small mixers that do all of that already out there, but for you it is four or five individual projects, so you should be charging him accordingly.

Your parts (3 XLRs, transformers, reverb brick, enclosure) are going to add up, and your time will be substantial. I am just saying it is not really a cost effective exercise for you or the buyer.

http://www.amazon.com/s/?ie=UTF8&keywords=2-channel+mixer&tag=googhydr-20&index=aps&hvadid=96659769626&hvpos=1t1&hvexid=&hvnetw=g&hvrand=6841632910748702023&hvpone=&hvptwo=&hvqmt=b&hvdev=c&ref=pd_sl_6kh3rgrwvm_b_p12

That being said, you can still do it.

Here is the challenge, he doesn't need a guitar based effect - he needs a mixer platform that goes from low impedance mic level to line level (but nowhere does he need guitar level impedance) which is what we deal with most of the time.

You need to look into either active impedance changers to go from low impedance mic level to high impedance line level, or else transformers which you can buy. Either of these will isolate each mic input and can feed a mixing matrix where you do your EQ and reverb. Your output can be line level and it can still feed most mixers or PA amps.

Phantom power is easy to implement, your challenge will be getting 48v DC to feed it. You might need to start with 18v to get there.