View Full Version : Urei 838 crossovers wiring diagram
vintage cltr
05-25-2017, 09:44 AM
I was fortunate enough to find a pair of these beasts.... I have semi-restored them back to life. I mean the Altec 604-8g sounds great. Now these have the time aligned crossovers which are giant.
It's almost like a crossover in the front and one in the back....
Anyways, I'm not getting anything from the tone controls in the front. I will post pictures later today when I get home from work, but I was hoping that someone possibly had a schematic???
These crossovers sport (3) light bulbs (H,M,L) which are like 6.2 volts each.. I have never seen anything like this.
I have recapped the back half of the crossover.
speakerdave
05-25-2017, 09:50 AM
I was fortunate enough to find a pair of these beasts.... I have semi-restored them back to life. I mean the Altec 604-8g sounds great. Now these have the time aligned crossovers which are giant.
It's almost like a crossover in the front and one in the back....
Anyways, I'm not getting anything from the tone controls in the front. I will post pictures later today when I get home from work, but I was hoping that someone possibly had a schematic???
These crossovers sport (3) light bulbs (H,M,L) which are like 6.2 volts each.. I have never seen anything like this.
I have recapped the back half of the crossover.
The schematic is in the manual for the UREI 813, available at JBL Pro.
speakerdave
05-25-2017, 09:57 AM
I couldn't get through the maze at JBL Pro. Just Google UREI 813.
vintage cltr
05-25-2017, 10:04 AM
The schematic is in the manual for the UREI 813, available at JBL Pro.
thanks....
when I opened this originally, it was on my phone and I didn't see the last page............ the wiring diagram :blink:
Earl K
05-25-2017, 10:17 AM
Here ! (http://www.jblproservice.com/pdf/vintage%20jbl-urei%20electronics/urei-813.pdf)
Are you confident that you actually have the Altec version of the Urei 813 ?
You have ( after-all ) posted a pic of a version that uses a JBL HF driver .
All four (?) versions used different networks .
:)
PS; the Altec version uses an HF horn that looks like this ;
http://pictures1.kyozou.com/pictures/_28/27208/27207425.jpg
vintage cltr
05-25-2017, 11:13 AM
Here ! (http://www.jblproservice.com/pdf/vintage%20jbl-urei%20electronics/urei-813.pdf)
Are you confident that you actually have the Altec version of the Urei 813 ?
You have ( after-all ) posted a pic of a version that uses a JBL HF driver .
All four (?) versions used different networks .
:)
PS; the Altec version uses an HF horn that looks like this ;
http://pictures1.kyozou.com/pictures/_28/27208/27207425.jpg
Mine have the 15" Altec 604-8g drivers with the 15" Emience drivers as well.
Mine are the 838's sorry if the wrong pic was posted.
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