Search found 1666 matches

by Joe Malone
Tue Jan 12, 2021 7:20 pm
Forum: JLM Audio Kits
Topic: LA500A opto comp leveling amp BUILD THREAD 500/51X
Replies: 179
Views: 178816

Re: LA500A opto comp leveling amp BUILD THREAD 500/51X

ok sorry for taking you along for this ride- looks like the problem could be that the ne5532p opamp on the sc board was installed in the wrong orientation. I noticed that someone here had a similar issue a few years back. I removed the opamp and the needle was no longer pinned with power on. flippe...
by Joe Malone
Sat Dec 26, 2020 7:40 pm
Forum: JLM Audio Kits
Topic: LA500A opto comp leveling amp BUILD THREAD 500/51X
Replies: 179
Views: 178816

Re: LA500A opto comp leveling amp BUILD THREAD 500/51X

Hello Joe, So I didn't get a response to my last query but I think I figured out a lot of the stuff. My DAW has the ability to play a 1KHz tone like you said. I'm playing that on repeat while I plug the output of my audio interface (Audient evo 4) to the DI of my preamp (a Hairball audio Lola). The...
by Joe Malone
Wed Dec 16, 2020 1:49 pm
Forum: JLM Audio Kits
Topic: Regurgitator kit Build Thread
Replies: 114
Views: 138016

Re: Regurgitator kit Build Thread

Thanks for the prompt response - much appreciated. I just wanted to check the "GND" = "0V" because I understand they can be different things at times. I have a quick pic attached just to confirm my understanding. I am using an AMB dual rail power supply connected by a 3 core shielded cable. I was i...
by Joe Malone
Wed Dec 16, 2020 1:30 pm
Forum: JLM Audio Kits
Topic: LA500A opto comp leveling amp BUILD THREAD 500/51X
Replies: 179
Views: 178816

Re: LA500A opto comp leveling amp BUILD THREAD 500/51X

Hello All, Was hoping for some insight for a noob like me. I just put together the comp and the build process went great, but now I’m trying calibrating the unit and I literally don’t understand any of the instructions. Could someone please post a complete layman’s guide, or somewhere I could get t...
by Joe Malone
Tue Dec 15, 2020 3:56 pm
Forum: JLM Audio Kits
Topic: Regurgitator kit Build Thread
Replies: 114
Views: 138016

Re: Regurgitator kit Build Thread

Hi everyone, I am intending to use 2 x regug' to convert single ended line level (from phone preamp to balanced line level for my power amp. I have looked at this tread but cannot see any mention of what PCB pads you wire for single ended input. I have the balanced output all sorted :). Can someone...
by Joe Malone
Wed Dec 09, 2020 7:41 pm
Forum: JLM Audio Kits
Topic: Regurgitator kit Build Thread
Replies: 114
Views: 138016

Re: Regurgitator kit Build Thread

pillepalle123 wrote:
Tue Dec 08, 2020 10:15 pm
Hi,
how is the frequency response of the regurgitator?

I want to use it for Subwoofer duty and need a flat response at least down to 20hz.

Thanks in advance!

Regards,
Chris
Regurgitator is -3dB @ 2Hz into a 10k load and basically flat at 20Hz so fine for subwoofer use
by Joe Malone
Tue Dec 01, 2020 12:17 pm
Forum: JLM Audio Kits
Topic: AUX8 Build thread
Replies: 2
Views: 333

Re: AUX8 Build thread

I was designing an 16x8ch AUX expander for my newly built DIY-Racked DR2402, wanting to use the JLM Palpigrade for the inputs, CAPI 4xInvACA for summing and the JLM Tardigrade for the balancing of the outputs. Trying to minimize wiring, Joe kindly offered to draw up some pcb's that would fit the pa...
by Joe Malone
Mon Nov 23, 2020 10:28 am
Forum: JLM Audio Kits
Topic: Palpigrade Build Thread
Replies: 4
Views: 4595

Re: Palpigrade Build Thread

Hi Joe, is there a parts list available for the Palpigrade yet? Palpigrade kit parts list 1 x Palpigrade PCB 8 x DIP8 IC socket 8 x 10k 4pin SIL 8 x 10k 8pin SIL 2 x 10R 8 x 100uF 10v Non Polar caps 16 x 1uF MONO caps 24 x 39pF ceramic caps 1 x 16 IDC header 1 x 3way terminal block 1 x DB25 pcb mou...
by Joe Malone
Tue Nov 17, 2020 3:35 pm
Forum: JLM Audio Kits
Topic: 8 Channel Relay Switch Build Thread
Replies: 20
Views: 16622

Re: 8 Channel Relay Switch Build Thread

Joe, From what I understand one can only use two relays via one switch at a time? Please correct me if I am wrong. So like a register of 3 inputs; 1 cancels out 2 and 3. 2 cancels 1 and 3 and so on? Is there a way to make it so all can be on or off? Thank you All 8 relays can be switched individual...
by Joe Malone
Sat Nov 14, 2020 12:23 pm
Forum: JLM Audio Kits
Topic: SUM8 Build Thread
Replies: 1
Views: 260

SUM8 Build Thread

SUM8 pcb.
POTS are all 10k log either dual for stereo use or dual concentric stacked mono with odd on top. 1,2 3,4 5,6 7,8.

Image
by Joe Malone
Sat Nov 14, 2020 10:22 am
Forum: JLM Audio Kits
Topic: AUX8 Build thread
Replies: 2
Views: 333

AUX8 Build thread

AUX8SUM pcb ver1 snaps into 4 v grooved pcbs. POTS are all 10k log either dual for stereo use or dual concentric stacked mono with odd on top. 1,2 3,4 5,6 7,8. BUSS resistors will usually all be 10k for SUM8 or most mixers or 47k for API. SUM resistors are only needed if mono linking AUX1 & AUX2. Li...
by Joe Malone
Mon Oct 26, 2020 11:04 am
Forum: JLM Audio Kits
Topic: DINGO PCB and kit BUILD THREAD
Replies: 106
Views: 179668

Re: DINGO PCB and kit BUILD THREAD

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 +...
by Joe Malone
Mon Oct 19, 2020 9:06 pm
Forum: JLM Audio Kits
Topic: Dual99v3000 build thread
Replies: 0
Views: 327

Dual99v3000 build thread

Dual99v3000 build thread
by Joe Malone
Mon Oct 19, 2020 11:40 am
Forum: JLM Audio Kits
Topic: FREQ500 KIT Build Thread
Replies: 9
Views: 10558

Re: FREQ500 KIT Build Thread

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...
by Joe Malone
Tue Oct 06, 2020 7:14 pm
Forum: JLM Audio Kits
Topic: VU BUFFER & PEAK LED KIT BUILD THREAD
Replies: 102
Views: 116192

Re: VU BUFFER & PEAK LED KIT BUILD THREAD

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...