Search found 8 matches

by mac
Mon Aug 27, 2012 9:57 pm
Forum: JLM Audio Kits
Topic: JLM99*MB Kit documentation
Replies: 24
Views: 31341

Re: JLM99*MB Kit documentation

Hi Guys, I know this thread is a bit old....but it's relevant to my current build. I have the JLM99*MB kit and am putting it together with a pair of Fred Forssell fet992 DOA's... Looking to use an OEP on the board, so Joes schem for the dual 99v with the OEP provides a great starting point. also fou...
by mac
Tue Aug 25, 2009 9:26 pm
Forum: JLM Audio Kits
Topic: Valve Preamp & Compressor Kits- AT Interview
Replies: 11
Views: 18399

Re: Valve Preamp & Compressor Kits- AT Interview

Is someone going to start a valve BA beta testing line up thread??? :)

Also, does anyone know if Mr Malone a bourbon or red wine drinker ? - just getting my bribes organised now so i can jump the queue.... :lol:

Mac..
by mac
Tue Aug 25, 2009 9:14 pm
Forum: JLM Audio Kits
Topic: JLM small 34mm VU - QUESTION
Replies: 9
Views: 12559

Re: JLM small 34mm VU - QUESTION

Cool, thanks heaps Joe. And thanks for taking the time on such a simple noob question... cheers, Mac. P.S. how far away are your new tube kits I have been hearing about?? I might hold off on building a Gyraf G9 if I know you might have something available in the next few months... DONT WORRY - just ...
by mac
Tue Aug 25, 2009 3:43 pm
Forum: JLM Audio Kits
Topic: JLM small 34mm VU - QUESTION
Replies: 9
Views: 12559

Re: JLM small 34mm VU - QUESTION

Thanks Joe,

Series Resistor value = (Power rail voltage - Led voltage {2v or 4v}) / o.o1
30v rail - 4v/0.01= 2600 (one 2.6K resistor)

Shouldnt I use two resistors to spread the heat??

:) Mac.
by mac
Thu Aug 20, 2009 5:18 pm
Forum: JLM Audio Kits
Topic: JLM small 34mm VU - QUESTION
Replies: 9
Views: 12559

Re: JLM small 34mm VU - QUESTION

I'd suggest connecting them in parallel to your supply, rather than in series. Yeah, thanks Chris. I thought about that after I posted. But I figure if one goes down I will open the unit anyway :) I might email Joe and find out from the horses mouth what the voltage and draw of these things are. I ...
by mac
Thu Aug 20, 2009 10:20 am
Forum: JLM Audio Kits
Topic: JLM small 34mm VU - QUESTION
Replies: 9
Views: 12559

Re: JLM small 34mm VU - QUESTION

also,
I had planned to connect both in a string, since i have so much input voltage at my disposal.

Mac
by mac
Thu Aug 20, 2009 10:16 am
Forum: JLM Audio Kits
Topic: JLM small 34mm VU - QUESTION
Replies: 9
Views: 12559

Re: JLM small 34mm VU - QUESTION

Thanks Chris,
So do you know that the led in the 34mm VU is 12volt, or are you assuming it is?

I used the online calculator at http://led.linear1.org/1led.wiz and assumed the values, ahead of actually finding out what i was dealing with.

regards,
Mac
by mac
Thu Aug 20, 2009 8:59 am
Forum: JLM Audio Kits
Topic: JLM small 34mm VU - QUESTION
Replies: 9
Views: 12559

JLM small 34mm VU - QUESTION

Hey, Does anyone know the voltage required for the little led's inside the small round 34mm VU's that Joe sells??? http://www.jlmaudio.com/VU%20Buffer.htm I have bought two of them, but cant find the answer to this question anywhere. Also, can you open them up to replace or change the LED? I wanted ...