18watt for keyboards?
Posted: Sat Nov 13, 2010 11:44 pm
I just acquired a donor H/K Allegro mono amp that uses El84/12ax7s and would like to use the iron for a keyboard amp. I found several schematics and thought the "minimalist 18watt" would be perfect. But I have a couple of questions. I tried to locate the 18watt.com forum but its defunct.
http://mhuss.com/18watt/schematics/18minwatt.gif
First, since this is a guitar amp design, Im assuming it needs more gain than a keyboard so can the first 12ax7 be eliminated or is it still needed. I believe it is if using tone controls though.
Lastly, Id like to use the SS rectifier for less heat and better bottom end. Any reason I should use the ez81 thats used in the less minimalist version?
Thx amt
http://mhuss.com/18watt/schematics/18minwatt.gif
First, since this is a guitar amp design, Im assuming it needs more gain than a keyboard so can the first 12ax7 be eliminated or is it still needed. I believe it is if using tone controls though.
Lastly, Id like to use the SS rectifier for less heat and better bottom end. Any reason I should use the ez81 thats used in the less minimalist version?
Thx amt