LX-5 network connection for S-7 system

[Alex]

Dear all,

I bought a 1959 S-7 olympus and found the connection of network is:
pin1 (LF + green) pin2 (LF - black) pin3 (HF + red) pin4 (HF - black)

I also bought a LX-7 that the pin 2 and 3 coonected with black wires.

Anyone know the correct connection of them?

Thanks.

Alex

[4313B]

LX-7

#1 is LF red
#2 is LF blk
#3 is HF blk
#4 is HF red

[Alex]

Thanks Giskard,

How about LX-5?
It it the same of LX-7?

LX-7

#1 is LF red
#2 is LF blk
#3 is HF blk
#4 is HF red

[Zilch]

HF leads are reversed on Olympus S7 system, yes. Red to #3, Black to #4. It is to compensate for phase delay due to driver offsets, presumably, about the crossover frequency.

There's no harm in wiring them either way; instructions said "as you prefer," basically, according to listening performance. It just moves the phase cancellation lobes around....

[4313B]

Here is the LX5 schematic - http://www.jblproservice.com/pdf/Net...matics/LX5.pdf

LX-5

#1 is LF red
#2 is LF blk
#3 is HF blk
#4 is HF red

"Note - Terminal 3 must connect to red terminal of tweeter (JUNE 1974)"

Anyway - What Zilch said

[Alex]

Many thanks to your two nice guys..

Here is the LX5 schematic - http://www.jblproservice.com/pdf/Net...matics/LX5.pdf

LX-5

#1 is LF red
#2 is LF blk
#3 is HF blk
#4 is HF red

"Note - Terminal 3 must connect to red terminal of tweeter (JUNE 1974)"

Anyway - What Zilch said

[John]

LX-7 ??? What was it used in ???

[Don C]

LX-7 ??? What was it used in ???

http://www.lansingheritage.org/image...964/page19.jpg

[John]

Well now I feel smarter, Thanks