Search found 10 matches

by mybishi
Fri Oct 28, 2016 1:06 pm
Forum: JLM Audio Kits
Topic: Passive Controller Build Thread
Replies: 32
Views: 26042

Re: Passive Controller Build Thread

Hey there Joe,

Is there any way to get a schematic for this pcb? Or at least a labeled graphic?
by mybishi
Thu Oct 20, 2016 6:33 pm
Forum: JLM Audio Kits
Topic: TREX and TREX2 Transistor regulator kit
Replies: 27
Views: 48082

Re: TREX and TREX2 Transistor regulator kit

Also, you are saying I should replace the trim pot with a zener? Should I also install the zener indicated by the circuit board or should I jump that connection?
by mybishi
Thu Oct 20, 2016 5:23 pm
Forum: JLM Audio Kits
Topic: TREX and TREX2 Transistor regulator kit
Replies: 27
Views: 48082

Re: TREX and TREX2 Transistor regulator kit

For this project I need 15V+ and 15V-, around 70ma out. I'm powering 8x THAT 1280's and 2x OPA627's. I've tried the zener approach but in prototyping, one mistake leads to blown Zeners. (For example, nicking the chassis with a multimeter probe and shorting the power supply in). What would you sugge...
by mybishi
Tue Oct 18, 2016 11:54 am
Forum: JLM Audio Kits
Topic: TREX and TREX2 Transistor regulator kit
Replies: 27
Views: 48082

Re: TREX and TREX2 Transistor regulator kit

For this project I need 15V+ and 15V-, around 70ma out. I'm powering 8x THAT 1280's and 2x OPA627's. I've tried the zener approach but in prototyping, one mistake leads to blown Zeners. (For example, nicking the chassis with a multimeter probe and shorting the power supply in). What would you sugges...
by mybishi
Tue Oct 18, 2016 10:07 am
Forum: JLM Audio Kits
Topic: TREX and TREX2 Transistor regulator kit
Replies: 27
Views: 48082

Re: TREX and TREX2 Transistor regulator kit

Can I run 2 trex's with one of them having its polarity reserved (with tip126, caps and zener reversed) off of the same 48v input?
by mybishi
Fri Apr 11, 2014 5:05 pm
Forum: JLM Audio Kits
Topic: BA BA2 BA4 BAD Dual99v Build Thread
Replies: 333
Views: 292573

Re: BA BA2 BA4 BAD Dual99v Build Thread

Hey Joe and everyone, I just finished my first BA2 and a pair of dingos with a passive eq on each. I was hoping to incorporate these dingos into the BA2 chassis. I've got the switching and layout all set but I'm stumped on the power. Is it possible to run both the single rail +48v BANs with the +/-2...
by mybishi
Sat Apr 05, 2014 7:21 pm
Forum: JLM Audio Kits
Topic: BAN Build Thread
Replies: 129
Views: 162083

Re: BAN Build Thread

Joe,

Again, thank you for such a quick reply. Glad to know I'm not going crazy. In the case of an oversight, I thought I'd mention that the BAN kit includes the 68R resistor and it is on the parts list. Howevrer, I can't complain about a free resistor with every purchase ;)

Nick
by mybishi
Sat Apr 05, 2014 9:59 am
Forum: JLM Audio Kits
Topic: BAN Build Thread
Replies: 129
Views: 162083

Re: BAN Build Thread

I'm miffed as to where the 68r resistor goes on a BAN with JlM99V output opamp and no transformer. I don't see it on the board schematic or anywhere on the build thread. I think it's RG but I don't know enough to be able to place it correctly in the circuit. Any ideas y'all?
Thanks
Nick
by mybishi
Sat Apr 05, 2014 12:59 am
Forum: JLM Audio Kits
Topic: BA BA2 BA4 BAD Dual99v Build Thread
Replies: 333
Views: 292573

BA 2 Dingo Incorporation Power Query

Hey Joe and everyone, I just finished my first BA2 and a pair of dingos with a passive eq on each. I was hoping to incorporate these dingos into the BA2 chassis. I've got the switching and layout all set but I'm stumped on the power. Is it possible to run both the single rail +48v BANs with the +/-2...
by mybishi
Thu Feb 20, 2014 11:43 pm
Forum: JLM Audio Kits
Topic: BAN Build Thread
Replies: 129
Views: 162083

Re: BAN Build Thread

Does any one know where the variable impedance pot connects in the BAN circuit. It is an available option yet the schematic, pc board, overlays, and build thread do not mention where this component interfaces. Unfortunately, I am not yet learned enough to be able to deduce the pots correct location,...