Search found 20 matches

by fragletrollet
Fri Apr 14, 2023 9:54 pm
Forum: JLM Audio Kits
Topic: AUX8 Build thread
Replies: 19
Views: 34206

Re: AUX8 Build thread

Just think how messy it would be without the pcb's :)
by fragletrollet
Thu Apr 13, 2023 11:04 pm
Forum: JLM Audio Kits
Topic: AUX8 Build thread
Replies: 19
Views: 34206

Re: AUX8 Build thread

And another of the front
by fragletrollet
Thu Apr 13, 2023 11:03 pm
Forum: JLM Audio Kits
Topic: AUX8 Build thread
Replies: 19
Views: 34206

Re: AUX8 Build thread

Been a while since I've had time for DIY, but picked this one out of storage to try to finish it and put it to good use. After a few solid days of soldering I've finished the power supply (AC/DCv4), the LED circuit (ended up with simple backlighting of the scribble strips instead of a fully fledged ...
by fragletrollet
Fri Mar 04, 2022 1:02 am
Forum: JLM Audio Kits
Topic: AUX8 Build thread
Replies: 19
Views: 34206

Re: AUX8 Build thread

I'm going for these knobs.
by fragletrollet
Fri Mar 04, 2022 1:01 am
Forum: JLM Audio Kits
Topic: AUX8 Build thread
Replies: 19
Views: 34206

Re: AUX8 Build thread

I'm going for these knobs.
by fragletrollet
Fri Mar 04, 2022 12:52 am
Forum: JLM Audio Kits
Topic: AUX8 Build thread
Replies: 19
Views: 34206

Re: AUX8 Build thread

Panel design files. Go crazy!
by fragletrollet
Fri Mar 04, 2022 12:47 am
Forum: JLM Audio Kits
Topic: AUX8 Build thread
Replies: 19
Views: 34206

Re: AUX8 Build thread

Holes in the last slot are in my design supposed to fit a label strip for labeling the destination of each aux bus. The strip will need cutting and drilling, I've yet to do this. Holes can also be used for signal/overload LED's, but the holes are a little too small for 3mm led's (initially designed ...
by fragletrollet
Fri Mar 04, 2022 12:43 am
Forum: JLM Audio Kits
Topic: AUX8 Build thread
Replies: 19
Views: 34206

Re: AUX8 Build thread

More pictures.
by fragletrollet
Fri Mar 04, 2022 12:39 am
Forum: JLM Audio Kits
Topic: AUX8 Build thread
Replies: 19
Views: 34206

Re: AUX8 Build thread

Finished panel design and got my panel cnc'ed and delivered. Still have some work to do before the unit is all finished, but I can verify that my panel design fits with my selected components and pcb's.
by fragletrollet
Thu Nov 04, 2021 11:36 pm
Forum: JLM Audio Kits
Topic: TREX and TREX2 Transistor regulator kit
Replies: 44
Views: 128821

Re: TREX and TREX2 Transistor regulator kit

So if I get another 48V smps I can make bipolar 15-17V, but I need two TREX pcb's with one of the pcb's having its polarity reserved (so +48V into 0V, Vin to case ground) and exchanging regulator with tip126, and reversing all caps and zeners? Could it be done with a TREX2 alone (+2 smps)?
by fragletrollet
Thu Nov 04, 2021 4:22 pm
Forum: JLM Audio Kits
Topic: GAIN Mic Pre / Makeup Amp Kit
Replies: 26
Views: 28689

Re: GAIN Mic Pre / Makeup Amp Kit

Thanks for the feedback. I have various passive EQ's from Ian @ customtubeconsoles (Helios & Pultec), which are re-designs based on the named units. 470K input impedance is specified in all the gain makeup amps, although differing in how much gain they need. So you're saying other/the original passi...
by fragletrollet
Wed Nov 03, 2021 7:59 pm
Forum: JLM Audio Kits
Topic: VUPPMGR40v3 kit (40 Led PPM/VU/GR Meter kit) BUILD THREAD
Replies: 21
Views: 113871

Re: VUPPMGR40v3 kit (40 Led PPM/VU/GR Meter kit) BUILD THREAD

Very nice, I'll look into the updated version :wink:
by fragletrollet
Mon Nov 01, 2021 3:51 pm
Forum: JLM Audio Kits
Topic: VUPPMGR40v3 kit (40 Led PPM/VU/GR Meter kit) BUILD THREAD
Replies: 21
Views: 113871

Re: VUPPMGR40v3 kit (40 Led PPM/VU/GR Meter kit) BUILD THREAD

Pondering on using this in a mastering console I'm planning. I would have use of monitoring loud signals and would need a scale that's shifted upwards. My main converters are calibrated to the same as my monitoring DA ('+22dBu), but I also use a H8000 for final master 2track AD conversion that has +...
by fragletrollet
Tue Jul 20, 2021 4:05 am
Forum: JLM Audio Kits
Topic: TREX and TREX2 Transistor regulator kit
Replies: 44
Views: 128821

Re: TREX and TREX2 Transistor regulator kit

Could I just run one of the outputs of the TREX2 into the negative side of the FLIP board to have +/- rails from a single +48 supply? :)
by fragletrollet
Wed Jun 02, 2021 2:47 am
Forum: JLM Audio Kits
Topic: 8 Channel Relay Switch Build Thread
Replies: 37
Views: 92924

Re: 8 Channel Relay Switch Build Thread

Hey, thanks for getting back to me 8) Yep the schematic is showing only one vactrol per side, I am running as you say back to back. So at any time either + or - on the diode side of each vactrol is connected to 0v. If I'm understanding you correctly, I can just twist one of the sides of the back to ...