Variac diyAudio Editor Joined 2001 BurningAmp.org Paid Member 2009-11-01 6:42 am #1 2009-11-01 6:42 am #1 Links to pages with Electronic Instruction: http://www.allaboutcircuits.com/ Sallen-Key Filters Last edited by a moderator: 2009-11-01 5:33 pm
