Search found 4 matches

by Eric Beam
Thu Oct 27, 2011 4:00 am
Forum: JLM Audio Kits
Topic: BA BA2 BA4 BAD Dual99v Build Thread
Replies: 335
Views: 345656

Re: BA BA2 BA4 BAD Dual99v Build Thread

Finished up my BA4 with Jensen transformers & 990s, Sound great. Channels 1&2 = JT-MB-CA, Channels 3&4 = JT-11K8-APC. Outputs = JT-11-BMQ. +/- 0.5 dB 20-20khz - +1 dB boost @ 30khz with the 11k8 noise floor @ -107 with gain up. 0.0019 THD http://farm7.static.flickr.com/6118/6283851742_debda41150.jpg...
by Eric Beam
Fri Oct 14, 2011 7:59 am
Forum: JLM Audio Kits
Topic: BA BA2 BA4 BAD Dual99v Build Thread
Replies: 335
Views: 345656

Re: BA BA2 BA4 BAD Dual99v Build Thread

Thanks again.
I'll experiment with the isolator & check ringing with a scope.
by Eric Beam
Thu Oct 13, 2011 11:56 pm
Forum: JLM Audio Kits
Topic: BA BA2 BA4 BAD Dual99v Build Thread
Replies: 335
Views: 345656

Re: BA BA2 BA4 BAD Dual99v Build Thread

Thanks for the info. If I wanted to use the impedance knob, How do you come up with the variable Z values? Out of curiosity, I already have the JT-OLI-3 output isolators. Would they eliminate the need for the 51R & 470uF if I used them before output pins 2 & 3? Or maybe just the 51R? Not sure what t...
by Eric Beam
Thu Oct 13, 2011 3:21 am
Forum: JLM Audio Kits
Topic: BA BA2 BA4 BAD Dual99v Build Thread
Replies: 335
Views: 345656

Re: BA BA2 BA4 BAD Dual99v Build Thread

Well just ordered a BA4, look forward to it. Going to be building it with a few Jensen in/out transformers & some 990c's. I have a few areas I'm unsure about. 1. What would the optimum Jumper, RL & CL values be for a Jensen JT-11K8-APC 150:1.8k input with a JH990c? 2. What would the optimum Jumper, ...