Search found 12 matches

by martthie_08
Sun Nov 27, 2011 10:28 pm
Forum: JLM Audio Kits
Topic: DINGO PCB and kit BUILD THREAD
Replies: 104
Views: 156414

Re: DINGO PCB and kit Now Available

Joe, thanks for the reply, that is exactly what I wanted to know!
by martthie_08
Sun Nov 27, 2011 12:19 am
Forum: JLM Audio Kits
Topic: DINGO PCB and kit BUILD THREAD
Replies: 104
Views: 156414

Re: DINGO PCB and kit Now Available

I would like to build a Pultec'ish EQ with the DINGO, using my own filter circuit and have some questions: For debalancing / input impedance matching I would like to use the Hybrid or 99V opamp. Does the first opamp contribute noticably to the sound as it has gain = 1? For gain makeup, is it possibl...
by martthie_08
Thu Dec 23, 2010 10:00 am
Forum: JLM Audio Kits
Topic: Questions on OP:s for Baby Animal
Replies: 7
Views: 9906

Re: Questions on OP:s for Baby Animal

ok, thanks for the info, I was wondering why some would open (like the dual BA pdf) and others would not. But Acrobat Reader opens them all. It is a shame that people are misusing your schematics, btw. your PCB layouts are a work of art, keep up the great work!!
by martthie_08
Wed Dec 22, 2010 11:52 pm
Forum: JLM Audio Kits
Topic: Questions on OP:s for Baby Animal
Replies: 7
Views: 9906

Re: Questions on OP:s for Baby Animal

sorry for hijacking, but Joe would it be possible that you put the PDF's for the Baby Animal circuit diagram back online, the PDF's on the following links are not showing up (Safari webbrowser on Macintosh): http://www.jlmaudio.com/Baby%20Animal%20Mic%20Pre%20PCB%20Full%20Circuit.pdf http://www.jlma...
by martthie_08
Mon Oct 04, 2010 10:05 pm
Forum: JLM Audio Kits
Topic: FET DI QUESTIONS
Replies: 23
Views: 38628

Re: quick Q - FET DI hookup?

thanks, that clears it up! The preamp has a "mute output" switch, so I'll probably leave it as is and pass the phantom power through the DI.
by martthie_08
Mon Oct 04, 2010 8:53 pm
Forum: JLM Audio Kits
Topic: FET DI QUESTIONS
Replies: 23
Views: 38628

Re: quick Q - FET DI hookup?

another short question - I am hooking this up in front of a preamp, will the FET DI have a problem with phantom power appearing at its output? And will it pass the 48V through to a mic connected to the input posts?

thanks, Marten
by martthie_08
Tue Sep 28, 2010 11:13 pm
Forum: JLM Audio Kits
Topic: FET DI QUESTIONS
Replies: 23
Views: 38628

Re: quick Q - FET DI hookup?

wow, that was quick, perfect!

thanks, Marten
by martthie_08
Tue Sep 28, 2010 10:53 pm
Forum: JLM Audio Kits
Topic: FET DI QUESTIONS
Replies: 23
Views: 38628

FET DI QUESTIONS

is there any pic of the "naked" pcb or a wiring hookup? I installed the wiring posts and did not take notes on the connection scheme :roll: I find myself going to the "old website" for this kind of info, but nothing there unfortunately, Joe could you be of help? Thanks and best regards, Marten
by martthie_08
Mon Oct 29, 2007 10:03 pm
Forum: JLM Audio Kits
Topic: JLM 60Watt Power AMP Kit
Replies: 255
Views: 306319

great to see that this kit is available!! A few quick questions:

How much VA would a single PSU trafo need to have for a stereo version of this Power Amp?

Is the PSU filtering onboard, trafo / diode bridge offboard?

Will the IC need a heatsink (or be bolted to the case)?

thanks, Marten
by martthie_08
Wed Jun 06, 2007 10:17 pm
Forum: JLM Audio Kits
Topic: JLM AC/DC troubleshooting
Replies: 1
Views: 5680

again :oops: my bad, nothing was broken, I just had the trimpots turned fully clockwise, which gives maximum voltage - from there you have to give it a couple of turns counterclockwise before the regulator starts bringing the voltage down. Now got +/- 15V and 48V and everything is perfect. http://ho...
by martthie_08
Wed Jun 06, 2007 9:37 pm
Forum: JLM Audio Kits
Topic: JLM AC/DC troubleshooting
Replies: 1
Views: 5680

JLM AC/DC troubleshooting

ok, I need a little help troubleshooting my busted AC/DC powersupply. By stupid mistake I messed up the power transformer wiring and some caps went poof :oops: Now that the caps are replaced the 48V section is fully functional, but the voltages at the V+ and V- just sit there at unregulated DC volta...
by martthie_08
Wed Jun 06, 2007 9:31 pm
Forum: JLM Audio Kits
Topic: JLM 60Watt Power AMP Kit
Replies: 255
Views: 306319

my Auratones told me that they are really excited about this new product of yours, Joe :D

cheers, Marten