Search found 30 matches

by Paul
Thu Jun 13, 2013 9:57 am
Forum: JLM Audio Kits
Topic: Impedance and other things
Replies: 2
Views: 6418

Re: Impedance and other things

thanks for the info Joe. Sounds like impedance and transformer/op amp combos are what i'll go with in the very near future.

thanks.

paul.
by Paul
Wed Jun 12, 2013 7:38 pm
Forum: JLM Audio Kits
Topic: Impedance and other things
Replies: 2
Views: 6418

Impedance and other things

Hi all, Couple of questions. I have 4 channels of BAs with different Op Amp/Input Transformer configs and Im thinking i'd like to mod them so they're got the same op amps/input transformers. 1. Currently none of the channels have variable impendance. What would this give me and how does it modify th...
by Paul
Tue Jun 29, 2010 3:33 pm
Forum: JLM Audio Kits
Topic: MAC - Micro Auto Compressor
Replies: 65
Views: 88706

Re: MAC - Micro Auto Compressor

hello my next project!!

c'mon payday!!! C'MON!!!!
by Paul
Sat Jun 26, 2010 11:58 am
Forum: JLM Audio Kits
Topic: BA Issue
Replies: 8
Views: 11197

Re: BA Issue

well one of the channels i did the hum fix on doesnt work with its gain pot for some reason.. grrr!! but i'll get to the bottom of this!
by Paul
Fri Jun 25, 2010 8:54 pm
Forum: JLM Audio Kits
Topic: BA Issue
Replies: 8
Views: 11197

Re: BA Issue

and i can confirm it was all in the 09/07 hum fix. woo!
by Paul
Wed Jun 23, 2010 1:39 pm
Forum: JLM Audio Kits
Topic: BA Issue
Replies: 8
Views: 11197

Re: BA Issue

CL didnt do anything for me. I checked all my voltages and they seemed quite ok. it only seems that this occurs when gain is up really high so if need be i can get away with not using excessive gain nearly at max level so its not a show stopper. i'll email joe and see what he can tell me. thanks for...
by Paul
Wed Jun 23, 2010 8:55 am
Forum: JLM Audio Kits
Topic: BA Issue
Replies: 8
Views: 11197

Re: BA Issue

thanks chris, that's how i read them too, just making sure im heading in the right direction.
by Paul
Tue Jun 22, 2010 8:53 pm
Forum: JLM Audio Kits
Topic: BA Issue
Replies: 8
Views: 11197

Re: BA Issue

thanks chris. i am planning to do those fixes this weekend, hopefully it sorts out the issue i am experiencing; just ensuring the issue im having wasnt related to something else. Just to clarify on the fix before i go destroying something What do you mean by cut a trace? Does it mean to cut the pcb ...
by Paul
Sun Jun 20, 2010 12:12 pm
Forum: JLM Audio Kits
Topic: BA Issue
Replies: 8
Views: 11197

BA Issue

morning all, one of my BA channels is acting a little strange. it seems to work until i put the gain up and make a loud sound and the pre amp start making a thumping sound that is repetitious that continues until i turn the gain down and im not sure what the cause is. This pre is using the OEP trans...
by Paul
Sat Jan 09, 2010 6:37 pm
Forum: JLM Audio Kits
Topic: Baby Animal - 10uF Cap
Replies: 2
Views: 5943

Re: Baby Animal - 10uF Cap

ahahh!! thanks for the info Joe.

Is there anywhere that points that out? If not if might be a great idea to get a FAQ written for these???
by Paul
Wed Jan 06, 2010 2:18 pm
Forum: JLM Audio Kits
Topic: Baby Animal - 10uF Cap
Replies: 2
Views: 5943

Baby Animal - 10uF Cap

Hey all,

Im building my 4th BA and this one has a slightly different PCB to the older ones I have done. This one contains a 10uf cap, whilst the older ones do not. What is this for? Cant seem to find any info on the PCBs???
by Paul
Tue Jan 05, 2010 8:02 pm
Forum: JLM Audio Kits
Topic: BA newbie's questions 2009
Replies: 6
Views: 10355

Re: BA newbie's questions 2009

Joe Malone wrote: 27k is for OEP Rload when using fixed impedance. RG = 68R. (Latest batch of 100 BA kits were found to be missing 68R.)
no wonder i couldnt find the 68R on my garage floor!! :)
by Paul
Thu Apr 16, 2009 2:44 pm
Forum: JLM Audio Kits
Topic: Finally putting my BAs into a rack case
Replies: 5
Views: 8819

Re: Finally putting my BAs into a rack case

thanks for the template chris, however i did learn that it wasnt the best for my altronics rack so i did all the measurements from scratch and got them to fit perfectly (only have 1mm of room for movement on the inside). just need to drill for the powerswitch, xlrs and power dc plug! the 4th BA arri...
by Paul
Sun Mar 22, 2009 2:31 pm
Forum: JLM Audio Kits
Topic: Finally putting my BAs into a rack case
Replies: 5
Views: 8819

Re: Finally putting my BAs into a rack case

ahh yes, nice of me to leave out the finer details! :)

All 4 BAs will utilise volume pots whilst only the first 2 shall have DI. None are variable impendance and there will be no meters.
by Paul
Sun Mar 22, 2009 10:11 am
Forum: JLM Audio Kits
Topic: Finally putting my BAs into a rack case
Replies: 5
Views: 8819

Finally putting my BAs into a rack case

hi all, i have 3 BAs all built up and its time i placed them into my rack case. I'd like to know what everyone else has done to measure up where they need to drill the holes in the panels to ensure the switches and inputs on the BA fit in nice and easy. Is there a template someone has for a standard...