Re: Re: Re: XLR
True. Though a wee bit more expensive than a length of wire.
That presupposes that there are unbalanced inputs configured in this manner. Which may not always be the case.
The reason for shorting 2 and 3 is that when unused, they act like a pair of high impedance whip antennas which can couple RF into the circuit.
Another approach would be to make a small round plate out of copper and solder a length of 12 gauge solid core to it and insert that into pin 1, which would provide shielding over the unterminated inputs.
Only problem with that is that some gear doesn't tie the signal reference grounds to pin 1, just as some cables use a telescoping shield that's only tied to pin 1 at one end (usually intended to be used at the source end).
se
moamps said:
True. Though a wee bit more expensive than a length of wire.
That presupposes that there are unbalanced inputs configured in this manner. Which may not always be the case.
The reason for shorting 2 and 3 is that when unused, they act like a pair of high impedance whip antennas which can couple RF into the circuit.
Another approach would be to make a small round plate out of copper and solder a length of 12 gauge solid core to it and insert that into pin 1, which would provide shielding over the unterminated inputs.
Only problem with that is that some gear doesn't tie the signal reference grounds to pin 1, just as some cables use a telescoping shield that's only tied to pin 1 at one end (usually intended to be used at the source end).
se
TNT said:
The actual standards (IEC, AES, ANSI, SMPTE, etc.) are for pin 2 positive, pin 3 negative and pin 1 ground/shield. Some comapanies don't pay any attention to the actual standards that have been established and some will wire pin 3 positive (Jeff Rowland for example). However as far as I'm aware, all use pin 1 for ground/shield so if you're going to short pins 2 and 3, it doesn't matter whether pin 2 is positive or negative.
se
Re: Re: Re: Re: XLR
Nice trick. But you must be careful with connecting if you have not groove on round plate for proper insertion. Or using XLR connector with pin 1 connecting to body (bit more expensive)
I work in past 15 years with professional equipment (for radio station, theatres, etc.) with brands like Sony, Tascam, Soundcraft, Crown, dbx, ..etc; all have (regardless of the continent) same standard 2+, 3-,1 ground and XLR male for source, and XLR female for drain. Before ca 20 years was mess.
Regards
Steve Eddy said:
Nice trick. But you must be careful with connecting if you have not groove on round plate for proper insertion. Or using XLR connector with pin 1 connecting to body
(bit more expensive) TNT said:
I work in past 15 years with professional equipment (for radio station, theatres, etc.) with brands like Sony, Tascam, Soundcraft, Crown, dbx, ..etc; all have (regardless of the continent) same standard 2+, 3-,1 ground and XLR male for source, and XLR female for drain. Before ca 20 years was mess.
Regards
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