JLM AUDIO

Hey again Joe, Got to the calibration stage - the first side went well. Then got to the second side and had 1.67v output... after some investigation, I noticed I somehow missed installing a 100k resistor on the dingo :roll: That side is reading around 1.25v output now with 1.23v input (I assume thi...

Concerning the spot marked "case," I'm assuming this is the one and only connection to chassis from the power supply board. Can the AC mains earth ground still connect to chassis right by the IEC input connector like usual, or do I have to route it to this "case" spot on the pow...

Go Between RC Build Thread Below is the 2 most common wiring diagrams. With all relays operating on 48v or +/-24v max current draw is 18mA per GO between RC pcb + any LED or lamp current. Control voltage can be changed to 5v to 52v or +/-2.5v to +/-34v by 3 resistor changes and the 2 relay changes ...

Both have been built and calibrated successfully! The build is pretty simple, even without step by step instructions. Ran into a few snags on the first build but the 2nd one was much faster to assemble. A couple of pointers: Display PCB 1. Long lead of the LEDs go through the pad with a square. 2. ...

wave wrote:I really need some further guidance. I am just not seeing how to jump for full brightness. Can someone please elaborate?

Fit shunt jumper to first position of header as shown on attachment

Hello, I've put one of these together for a client and I'm trying to calibrate. Is there a procedure for calibration using a standard function generator? Preferably one that I can count LEDs to align with as I don't have the purpose made JLM meter scale. Also, I'm not understanding how to jumper th...

Success! Now I just need to calibrate it. Also with respect to passing through audio and have it have both input & output. Is it possible to do this on a normal VPR Rack like a CAPI 511-VPR? Thanks for your help! Cool great to hear you got it working CAPI rack only has XLR in and out so needs r...

Success! Now I just need to calibrate it. Also with respect to passing through audio and have it have both input & output. Is it possible to do this on a normal VPR Rack like a CAPI 511-VPR? Thanks for your help! CAPI rack only has XLR in and out so needs reverse XLR cable into the out to use i...

Oops, I think I figured it out. When joining the LED PCB to the MAIN PCB I only soldered together one side. For some reason I wasn't thinking and thought it was for just holding it together, but it actually is to connect all the components and LEDs. Go figure when building it at 1am. Will bridge th...

Thanks for the add Joe! I'm currently putting together the first of 2 VUPPM500 modules. I've assembled all of the PCB's but haven't put it together yet. A couple of questions: OK cool 1. When connecting the LED PCB to the MAIN PCB, do you recommend using excess leads from resistors to connect it to...

Can't find any documentation on variable pad kit (DI ??) that I'm using (or trying to) on a GoBetween + card (no xfmr - jumpered signal past xfmr mounting holes). I get signal to the variable pad PCB and ICD connector (pin 3), but nothing to the dual pot pins. There's continuity between IDC connect...

Hi Joe, Just getting going on the dingo and saw the note about avoiding using the () and [] components when using your 99v opamps. Wanted to verify that I should NOT place R17, R18, R20, C11, C13. You have those installed in the pictures, and you seem to be using the 99v opamps in those photos as w...

As an impulse buyer, I quickly ordered two (2) Go Between kits to use in racking a pair of Langevin AM17 mic pre's. I expect them to arrive by early next week. Some issues I'm now considering include how to include an input impedance switch for the AM17's. Putting the input pad before the mic input...

JLM ACDC 3 rail power supply with 4 channels of Sound Workshop Series 30 channel modules. Wow that is very nice & super neat build :-) 8) Please if you have any comments and/or photos of your JLM Audio kits or gear in your rack please put them up on our social media page at the links below or s...

Yep. That's fixed it. Thanks for your help. Cool great to hear :-) Please if you have any comments and/or photos of your JLM Audio gear in your rack please put them up on our social media page at the links below or send them to us by email as we work completely by word of mouth with no paid adverti...