Aleph 30 input connections ?

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matsj

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Joined 2005
#1
I have 2 aleph 30 pcb laying on my board and i have lost my papers on them. Can someone help me with the input connections ?
I have a bad pictures if that can help.
From left: gnd, sg, in+, in-. In the in- there is a small wire to the right unmarked hole.
Is In+ to pin 2 on xlr ?
Is SG to pin 1 ?
Is gnd to pin 3 ?

mats
 

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#2
matsj said:
I have 2 aleph 30 pcb laying on my board and i have lost my papers on them. Can someone help me with the input connections ?
I have a bad pictures if that can help.
From left: gnd, sg, in+, in-. In the in- there is a small wire to the right unmarked hole.
Is In+ to pin 2 on xlr ?
Is SG to pin 1 ?
Is gnd to pin 3 ?

mats
Click to expand...

Pin 2 on XLR is +in and 1 is Signal Ground (SG).

As far as I can see in the picture, the -In is taken to ground to make the amp a single ended amp instead of a balanced input. Will work fine.

Cheers.
 
#4
Leave the shorting jumper off of the board and make a shorting jumper to plug into the XLR that connects pin 1 and 3 when you are using the RCA inputs. Pass Labs supplies these with the amps they sell.

pin 1 is SG, pin 2 is in+, pin 3 is in-
 
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