Search found 3 matches

by chadblinman
Fri Aug 03, 2012 3:22 am
Forum: JLM Audio Kits
Topic: BA500 Mic Pre Amp BUILD THREAD 500/51X
Replies: 74
Views: 270251

Re: BA500 Mic Pre Amp BUILD THREAD 500/51X

Thanks, Joe!

One more novice question: Can you further specify the caps for both methods? (Type and voltage)

c.
by chadblinman
Tue May 01, 2012 6:00 am
Forum: JLM Audio Kits
Topic: BA500 Mic Pre Amp BUILD THREAD 500/51X
Replies: 74
Views: 270251

Re: BA500 Mic Pre Amp BUILD THREAD 500/51X

The only thing is the HPF frequency will change with the Z impedance control. So adding a capacitor with shorting switch into one of the 2 wire jumper positions. SHORT = FLAT 80Hz = 3uF @ Z centre, 220Hz @ Z min, 20Hz @ Z max 160Hz = 1.5uF @ Z centre, 440Hz @ Z min, 40Hz @ Z max This cold be done w...
by chadblinman
Sat Apr 28, 2012 4:38 pm
Forum: JLM Audio Kits
Topic: BA500 Mic Pre Amp BUILD THREAD 500/51X
Replies: 74
Views: 270251

Re: BA500 Mic Pre Amp BUILD THREAD 500/51X

Outstanding work! Thanks for all the care you put into these build threads. Would it be feasible to add a switchable HP filter to this? (Of course I'm thinking of the version without the DI input.) A fixed 80Hz filter would be great. Dual freqs, say 80 and 160Hz, would be even better... What are you...