Now, look here:
Seems like we've found the course.
Remember when soldering that this spot seemed a little weak
Fixed. Working perfect again. Thank you!
Search found 39 matches
- Tue Oct 31, 2017 7:22 pm
- Forum: JLM Audio Kits
- Topic: LA500 opto comp leveling amp BUILD THREAD 500/51X
- Replies: 223
- Views: 659064
- Sun Oct 29, 2017 7:05 pm
- Forum: JLM Audio Kits
- Topic: LA500 opto comp leveling amp BUILD THREAD 500/51X
- Replies: 223
- Views: 659064
Re: LA500 opto comp leveling amp BUILD THREAD 500/51X
Yes first try a wire across the outside terminals of the meter to bypass the led and see if the comp works without led just to check all the wiring is ok. Led is white clear 5mm about 800 to 1000mcd. We have the LED as spare part on our website if you are trying to match other LA500 meter lights ex...
- Fri Oct 27, 2017 11:57 pm
- Forum: JLM Audio Kits
- Topic: LA500 opto comp leveling amp BUILD THREAD 500/51X
- Replies: 223
- Views: 659064
Re: LA500 opto comp leveling amp BUILD THREAD 500/51X
Email me some clear in focus photos of your build so I can check it over. And answer all of the below questions. The unit has worked perfect for some 3 years. Please tell me if you need the pictures after reading this post. Does the meter light? If NO link over the outside 2 terminals on the meter ...
- Wed Oct 25, 2017 5:05 pm
- Forum: JLM Audio Kits
- Topic: LA500 opto comp leveling amp BUILD THREAD 500/51X
- Replies: 223
- Views: 659064
Re: LA500 opto comp leveling amp BUILD THREAD 500/51X
Hi! My meter-light died. How may I replace it? Hello G-sun, the squared and the round part can be detached.Take care when doing that,gently tear them apart.No brutal force please,or you might damage the meter or bend the needle. Then gently tear apart the white inlay. After that you can reach the l...
- Sat Oct 21, 2017 2:07 am
- Forum: JLM Audio Kits
- Topic: LA500 opto comp leveling amp BUILD THREAD 500/51X
- Replies: 223
- Views: 659064
Re: LA500 opto comp leveling amp BUILD THREAD 500/51X
Hi!
My meter-light died.
How may I replace it?
My meter-light died.
How may I replace it?
- Tue Apr 26, 2016 4:37 pm
- Forum: JLM Audio Kits
- Topic: Regurgitator kit Build Thread
- Replies: 124
- Views: 436380
Re: Regurgitator kit Build Thread
Yes connect forssell ground to pin 3 and pin 1 on regurg input. yes Pin 1 in and out is connected to 0v power on regurg. So you should only need the +/- power rails as 0v ground is already connect from the output of the forssell to pin 1. Thank you very much! It's really helpful for a not-so-skille...
- Mon Apr 25, 2016 2:08 am
- Forum: JLM Audio Kits
- Topic: Regurgitator kit Build Thread
- Replies: 124
- Views: 436380
Re: Regurgitator kit Build Thread
I have a Forssell Opto comp with unbalanced out, + (2) and ground (1)
and are going to use the Regurgitator for balanced out.
Do I connect
forssell ground
to
Regurgitator input 3 minus; 1 ground; or not connect?
And on Regurgitator is ground out/in pin1 connected with pcb ground?
and are going to use the Regurgitator for balanced out.
Do I connect
forssell ground
to
Regurgitator input 3 minus; 1 ground; or not connect?
And on Regurgitator is ground out/in pin1 connected with pcb ground?
- Mon Apr 11, 2016 3:04 am
- Forum: JLM Audio Kits
- Topic: LA500A opto comp leveling amp BUILD THREAD 500/51X
- Replies: 211
- Views: 526137
Re: LA500A opto comp leveling amp BUILD THREAD 500/51X
Thanks!Joe Malone wrote:G-Sun wrote:
If pin 1 to pin 3 is shorted then transformer out has a full path so will work full range.
- Thu Apr 07, 2016 7:51 pm
- Forum: JLM Audio Kits
- Topic: Regurgitator kit Build Thread
- Replies: 124
- Views: 436380
Re: Regurgitator kit Build Thread
Is this best mounted utilizing the XLR?
If using terminal blocks only, then?
If using terminal blocks only, then?
- Thu Apr 07, 2016 4:57 pm
- Forum: JLM Audio Kits
- Topic: LA500A opto comp leveling amp BUILD THREAD 500/51X
- Replies: 211
- Views: 526137
Re: LA500A opto comp leveling amp BUILD THREAD 500/51X
The RNLA is unbalanced in but with TRS socket. So plugging a balanced transformer out into this leaves the output open circuit on one side so you will only get a bit of high frequncy bleeding to the RNLA. Use a XLR to mono guitar jack cable and it will work fine. Thank you! Yes, I've never quite un...
- Wed Apr 06, 2016 9:01 pm
- Forum: JLM Audio Kits
- Topic: LA500A opto comp leveling amp BUILD THREAD 500/51X
- Replies: 211
- Views: 526137
Re: LA500A opto comp leveling amp BUILD THREAD 500/51X
Since the fault keeps changing I would be check all your soldering. Clean the bottom of the PCB's with isocol and a old toothbrush and resolder any bad soldering will fix 90% of problems. Bypass and comp in output with makeup & threshold at minimum should be the same level. Thank you! I believe the...
- Tue Apr 05, 2016 3:30 am
- Forum: JLM Audio Kits
- Topic: LA500A opto comp leveling amp BUILD THREAD 500/51X
- Replies: 211
- Views: 526137
Re: LA500A opto comp leveling amp BUILD THREAD 500/51X
I put in a dip-socket and Burr Brown OPA 2604 and took out the JLM 99V Worked fine on install, but now it's something wrong. Anything I should watch out for? Voltages or anything that should be connected different? The OPA2604AP can be plugged in with no changes with output transformer. The OPA2604...
- Sat Apr 02, 2016 9:50 pm
- Forum: JLM Audio Kits
- Topic: LA500A opto comp leveling amp BUILD THREAD 500/51X
- Replies: 211
- Views: 526137
Re: LA500A opto comp leveling amp BUILD THREAD 500/51X
I put in a dip-socket and Burr Brown OPA 2604
and took out the JLM 99V
Worked fine on install,
but now it's something wrong.
Anything I should watch out for?
Voltages or anything that should be connected different?
and took out the JLM 99V
Worked fine on install,
but now it's something wrong.
Anything I should watch out for?
Voltages or anything that should be connected different?
- Wed Feb 10, 2016 8:47 pm
- Forum: JLM Audio Kits
- Topic: LA500A opto comp leveling amp BUILD THREAD 500/51X
- Replies: 211
- Views: 526137
Re: LA500A opto comp leveling amp BUILD THREAD 500/51X
Ok, thanks!Joe Malone wrote: You could try a pair of fast optos but you will only be able to run and calibrate one type at a time as each opto type will need a completely different calibration setup.
So no you cannot reuse the ratio switch for this as a lot more switching and parts would be needed.
- Fri Feb 05, 2016 2:42 am
- Forum: JLM Audio Kits
- Topic: LA500A opto comp leveling amp BUILD THREAD 500/51X
- Replies: 211
- Views: 526137
Re: LA500A opto comp leveling amp BUILD THREAD 500/51X
Joe: I'm sure you've tried different optos for the LA500. And, if choosing just one, I'd say you've found a very good all round performer. Yet, if having many LA500, I wonder: Could it be realized with a very fast/ fast opto. And have you considered selling part kits for something like this? Second ...