so I have tested both R+ and R- by wiring them single-ended and they are working fine.
I want to try testing them now in balanced mode. And I have connected...
Thanks!
I want to try testing them now in balanced mode. And I have connected...
- hot pin of the XLR (pin2) to R+ PCB (this XLR cable is connected to the XLR output of DAC. Volume can be controlled in the DAC so I set the volume to -90db)
- cold pin (pin3) to R- PCB
- positive terminal of speaker was connected to R- PCB output
- negative terminal of speaker was connected to R+ PCB output
Thanks!
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Do you have a schematic or any sort of information on this BPA300? How about asking the vendor?
To connect a differential source to a single-ended input, the best option is to use a differential receiver. But if you don't want to go that route, a cheap hack can be to connect XLR pin 2 to RCA centre and XLR pin 1 to RCA ground. Leave XLR pin 3 floating. That'll work in many cases.
Tom
To connect a differential source to a single-ended input, the best option is to use a differential receiver. But if you don't want to go that route, a cheap hack can be to connect XLR pin 2 to RCA centre and XLR pin 1 to RCA ground. Leave XLR pin 3 floating. That'll work in many cases.
Tom
There usually has to be some ground connection between the source and the load. Per AES-48, the standard approach is to connect pin 1 straight to the metal enclosure and to connect the metal enclosure to PCB ground at one and only one point.
AES48 assumes that differential outputs go to differential inputs, hence my mention of a differential receiver. That doesn't seem to be what OP wants.
Tom
Tom
It's anyone's guess what R+ and R- mean. It's similarly anyone's guess what "balanced mode" means. Balanced on the input? Balanced on the output? Balanced on both?
Your interpretation is not the only one out there. Ambiguity is a thing.
Tom
Your interpretation is not the only one out there. Ambiguity is a thing.
Tom