Search found 7 matches

by stitchy
Thu Nov 06, 2014 11:06 pm
Forum: JLM Audio Products
Topic: Implementing JLM99V opamp in active eq
Replies: 5
Views: 8305

Re: Implementing JLM99V opamp in active eq

Output coupling as well? Though I would imagine the higher the uf value, the lower the frequency load dependent? "When low frequency oscillation is not a threat, I generally go by this rule of thumb Keep R x C = .1 1uF for 100k" If this is true, then ~120uf would work for 600 Ohm output pr...
by stitchy
Thu Nov 06, 2014 12:34 pm
Forum: JLM Audio Products
Topic: Implementing JLM99V opamp in active eq
Replies: 5
Views: 8305

Re: Implementing JLM99V opamp in active eq

Hi Joe!

Makes sense, cheers and thanks!
470uf fixed cap suggestion?
I don't know of any film caps that large in value...

CHEERS!

-s
by stitchy
Thu Nov 06, 2014 6:10 am
Forum: JLM Audio Products
Topic: Implementing JLM99V opamp in active eq
Replies: 5
Views: 8305

Implementing JLM99V opamp in active eq

Hello! I acquired a couple of active EQ boards that were originally designed to sit in the feedback circuit of a tube eq. I'd like to implement them in a discrete opamp active EQ circuit instead. I have a pair of JLM99V amps, JLM PS kit, and 1:1 600 input and output transformers for balancing. Board...
by stitchy
Mon Jul 07, 2014 4:18 am
Forum: JLM Audio Kits
Topic: VU BUFFER & PEAK LED KIT BUILD THREAD
Replies: 98
Views: 66809

Re: VU BUFFER & PEAK LED KIT BUILD THREAD

Hello! I have a Buffer Peak kit I built and Im not sure were my issue is. Attached are pics of the VU and circuit. It is vintage and I believe a real VU. It is attached from output of your buffer amp. I measured audio AC at your buffer input. DC power rail is measured at 10.76VDC at Buffer amps DC ...
by stitchy
Mon Jul 07, 2014 3:20 am
Forum: JLM Audio Kits
Topic: AC/DC & POWERSTATION KIT BUILD THREAD
Replies: 319
Views: 277318

Re: AC/DC & POWERSTATION KIT BUILD THREAD

Hello! I have a Powerstation I built and have two quick questions: ZD39 Is a zener diode? Should it be stuffed on the PS? I did not have one in my build kit and it is not populated on the powerstation. Second: I have a Triad F-241U power transformer. Will this work to power the Powerstation? Cheers...
by stitchy
Fri Jul 04, 2014 11:24 am
Forum: JLM Audio Kits
Topic: VU BUFFER & PEAK LED KIT BUILD THREAD
Replies: 98
Views: 66809

Re: VU BUFFER & PEAK LED KIT BUILD THREAD

Hello! I have a Buffer Peak kit I built and Im not sure were my issue is. Attached are pics of the VU and circuit. It is vintage and I believe a real VU. It is attached from output of your buffer amp. I measured audio AC at your buffer input. DC power rail is measured at 10.76VDC at Buffer amps DC i...
by stitchy
Fri Jul 04, 2014 10:44 am
Forum: JLM Audio Kits
Topic: AC/DC & POWERSTATION KIT BUILD THREAD
Replies: 319
Views: 277318

Re: AC/DC & POWERSTATION KIT BUILD THREAD

Hello! I have a Powerstation I built and have two quick questions: ZD39 Is a zener diode? Should it be stuffed on the PS? I did not have one in my build kit and it is not populated on the powerstation. Second: I have a Triad F-241U power transformer. Will this work to power the Powerstation? Cheers ...

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