T4b Docs

[CJ]

here is some T4b stuff from days of future passed>

 

[CJ]

UREI LDR Testing Spec>

 

[CJ]

page 2 -note that the p/n is a Clairex p/n which was bought by Silonex>

 

[CJ]

full props to Winston O Boogie for all these sheets>

 

[CJ]

last page of testing spec>

 

[CJ]

Silonex Cells, notice the 40% tolerance which is why testing is needed>

 

[CJ]

you can experiment with different cells, 5910  was stock for UA>

 

[CJ]

retro info- vintage 1960's LA2a T4 assemblies will most likely contain the Clairex cells,

Silonex cells are supposed to sound exactly the same

probably pretty hard to dig up any Clairex cells so this is just for kicks>

 

[CJ]

so if working on an old LA2a, you will be seeing a Clairex p/n,

 

[CJ]

now we are into the EL Panel docs, contact info back then, could be different now,>

 

[CJ]

useless info>

 

[CJ]

specs on the panel>

 

[CJ]

LSI purchase order, notice lead time  >

 

[CJ]

do not know if UA still sells T4b parts, big money as they have to get someone to do some testing, set up the LDR light machine, calibrate it, etc, had to bend over in order to get a some "pedigree" cells, which were used to match up cells bought in bulk from Silonex,  they ship a matched pair for $149, not $149 each >

 

[usekgb]

I really miss the days, as a JBL service guy, that I could hop on their pro service site (or even give Dave a call) and order these for $60.  I wish I would have bought a box back then!

 

[CJ]

there was quite a feeding frenzy here when word got out that JBL was getting out of the T4 game,

they still have a good support site,

http://www.jblproservice.com/navigation/Vintage%20JBL-UREI%20Electronics.html

 

[usekgb]

Yes, I remember.  I still use their support site from time to time, even though I'm not at an "official" crevice center anymore.

 

[shabtek]

I'm not at an "official" crevice center anymore.

quotable?

 

[usekgb]

Damn you auto correct!

 

[damnyankee]

an "official" crevice center???