JLM AUDIO

Hi, I'm planning on using 2 DINGO to make a mastering box with gain of +/- 5dB (switchable in .5dB steps with elma A4 series switches). Is the best place to implement a gain control like this in between the input stage and the output stage? I think that would mean I would set the overall gain for +...

Hopefully this is the right place to post this. I have two FREQ500 kits that I built that have some issues. I’m not a pro, but I wouldn’t say I’m inexperienced. Between mics, compressors, EQs, mic pres, amps, pedals, and various studio tools, I’ve built well over 100 projects. Alright. Enough pream...

Dear Joe I just made the Vu2 buffer kit and it's so easy ! and great to recover feeling of vu meter and look off computer !!! So, I miss having Meter on my lunchbox mostly for 1 preamp, so I was thinking : I could have preamp on Slot (1) and a Vu meter on the next slot (2), link the (1) output to t...

Hello...D9 is discretionary to raise the limit level. You can utilize an arrangement series of diodes and zeners to have switchable limit levels. Ordinarily you would simply short the limit sticks together to empower the comp . Increase pot for best control on front board use is a 10k fire up log p...

Driving an unbalanced load, do you leave pin 3 disconnected and the gain range shifts down by 6dB? If pin 3 is grounded at the load (to keep the gain range the same), does it stress the inverting amp by forcing it to drive 51 ohms, or does that pressure get relieved through the gain trim somehow? Y...

Kifore wrote: ↑

Mon Sep 07, 2020 3:00 am

Thank you for the links, I will order soon 500 Tester Dual Build. Can you deliver to Europe? All September I will by at my parents Munich home

OK cool. Yes we send several parcels every day to Europe

500 Tester Dual and single Build Thread Dual 500 Tester build map at link below http://jlmaudio.com/builds/maps/500Dual_Map.html Dual 500 Tester build map at link below http://jlmaudio.com/builds/maps/500Single_Map.html https://www.jlmaudio.com/500 Tester/500 TESTER DUAL BACK 640.jpg https://www.jl...

Does this help? https://emotiva.com/products/xsp-1 Not really but wasted a lot of my time reading all of this. But since they use dBV it will not be pro output level. The balanced out seem to only have the rca output level +6dB due to the balancing. If you have a scope you can check the output leve...

Hi Joe- So I have the amp working, it’s playing, just not as loud as it should be . To refresh your memory: 8pakamp, bridged Into 2 channels. I am running xlr from a Emotiva preamplifier (Xsp-1). I am also getting audible distortion at moderate volumes. Where would you suggest I begin with my troub...

The build looks fine. The meter LED may have accidentally been blown during the testing which will stop the comp from removing the hard bypass relay. With switch in VU or GR and module powered up measure voltage across the 2 meter LED terminals led A and Led k on the meter should be around 2v. If vo...

I purchased and assembled the mentioned limiter kit some time ago, and took it to a friend's audio shop for calibration. We discovered that while the unit was electrically active, the front meter was not lighting up, in fact that entire front circuit panel wasn't responding. Could it be an issue wi...

I have a slight issue with the TB amp. I'm getting a loud pop when turning the TB on and off. Is there a way to eliminate this? Could it be DC on the relay contacts? HI if built properly there should not be any dc on output. If getting pops make sure you are not sending phantom power into the outpu...

Hi there- I am a bit confused as to where the speaker out wires go. I have bridged to two channels (4 amps per). I am ready to test, with this exception, so any guidance would be appreciated :? :( See attachment for better output detail. The ceramic resistors glue to each other and the any metal pa...

Mattsoniclab wrote: ↑

Fri Jul 31, 2020 8:55 am

woohoo!
All finished and sounding great. Thanks for the excellent kit and easy to follow instructions Joe. I can see how much work goes into these.
Now to shove some drums through it.

cheers.
Matt

HI Matt
Great to hear you liked building the comps Hopefully the drum tracking went well