Search found 2 matches

by rbkonline
Sun Oct 02, 2016 4:19 pm
Forum: JLM Audio Kits
Topic: LA500A opto comp leveling amp BUILD THREAD 500/51X
Replies: 170
Views: 140309

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

Hi

I have a pair of LA500As. Both of them pass audio with their threshold and makeup knobs turned fully counter clockwise and even when the 500 series chassis in which they are mounted is switched off. Is this normal?
by rbkonline
Sat Dec 26, 2015 2:13 am
Forum: JLM Audio Kits
Topic: LA500A opto comp leveling amp BUILD THREAD 500/51X
Replies: 170
Views: 140309

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

Hi Joe I have built TWO LA500a kits. I am having the same calibration problem with BOTH the kits. Your help will be very much appreciated. I am feeding a 1k sine tone from my RME fireface ufx at roughly -15dbfs which is giving an output of 1.23VAC in my DMM. According to the calibration procedure, T...