If you want to wire up the XLR input plug to provide a fully balanced signal to the board, then the pic provided will not help you because the ground on the PCB is not wired up.
Refer here (this is one of the sources of info that I used when wiring up my Aleph J):
XLR Wiring Standards, Diagram & Pin-out (3 Pin Audio & 5 Pin DMX)
and my mark-up attached. [Note: If I've made any errors. I'd appreciate the feedback.]
You should wire up your RCA's "cold" to Pin 3 and the "hot" to Pin 2. That way, it will line up with the original J2 plan where you'd insert a jumper pin into the XLR receptacle between Pin 1 and Pin 3 ... unless I'm mistaken.
Refer here (this is one of the sources of info that I used when wiring up my Aleph J):
XLR Wiring Standards, Diagram & Pin-out (3 Pin Audio & 5 Pin DMX)
and my mark-up attached. [Note: If I've made any errors. I'd appreciate the feedback.]
You should wire up your RCA's "cold" to Pin 3 and the "hot" to Pin 2. That way, it will line up with the original J2 plan where you'd insert a jumper pin into the XLR receptacle between Pin 1 and Pin 3 ... unless I'm mistaken.
Heat Sink Initiative
indra1 / JeffYoung, out of interest, where did the plan for a bespoke flanged heatsink end up?
Thank you Papa and Dennis.
indra1 / JeffYoung, out of interest, where did the plan for a bespoke flanged heatsink end up?
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I wire my RCA "cold" to Pin 1, but with the jumper in the XLR for singled-ended-mode it will amount to the same thing.
I guess I lost my bet.
If you wire it this way then you need to wire your RCA "cold" separately to GND on the board (and drop the use of a jumper in the XLR socket for RCA mode -- otherwise you'd be shorting your signal ground to chassis ground).
No worries.
At least I haven't missed something crucial.
I've requested a quote from Conrad to supply a pair of 2x200mm deep flanged units. I'm asking them to mill off a flange from the double flange heatsinks.
I've also floated the idea of a taller heatsink at 165 mm rather than 151.5 mm. This would make them an easier fit with a 4U front/back plate that's on offer from HiFi2000.
I guess I lost my bet.
If you wire it this way then you need to wire your RCA "cold" separately to GND on the board (and drop the use of a jumper in the XLR socket for RCA mode -- otherwise you'd be shorting your signal ground to chassis ground).
That is exactly what I could not get my head around.
Screw it, I am wiring mine the wrong way and lighting this thing up.
I have only the outputs and inputs left to wire.
Then the DC off set, do not know the protocol.
One board connected at a time?
j2
I finally got my amp to a point of applying power to it.
Kind of of a fingers crossed point of thing.
All good.
Against other peoples advice on firing up both boards at once, I decided to take a bungy jump.
Got to set the DC offset this weekend and am looking forward to listening this amp
I finally got my amp to a point of applying power to it.
Kind of of a fingers crossed point of thing.
All good.
Against other peoples advice on firing up both boards at once, I decided to take a bungy jump.
Got to set the DC offset this weekend and am looking forward to listening this amp
Attachments
Finally got to setting the dc off set today.
Anyway, another one singing.
It is in my test system currently and sounds/ preforms good.
I can tell already it is a little more laid back than the F5.
Still articulate though.
Thanks Jeff for providing the info for doing this and all else who have helped me when I had a question.
Thank you all.
Greg
Anyway, another one singing.
It is in my test system currently and sounds/ preforms good.
I can tell already it is a little more laid back than the F5.
Still articulate though.
Thanks Jeff for providing the info for doing this and all else who have helped me when I had a question.
Thank you all.
Greg
