Is it viable to rewire the rca inputs to become xlr balanced inputs?
How would this be done?
How would this be done?
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erhard-audio wrote:there are two ways to get balanced in and outputs.
The 'faux' way, by simply wiring the XLR socket as an unbalanced connection, that is, shorting pins 1 & 3 on the XLR socket, that being ground and pin 2 being signal.
If you wish to have true balanced in and outputs, you'll need to use audio transformers, such as the Lundahl LL1544A, which will 'split' the signal on the XLR side to +ve, -ve and ground/shield, or you can use certain Op-Amps to do the same, but then you will also need a bipolar power supply to run the Op-Amps, such as + & - 12VDC.
So, for the ST-70, stick with the unbalanced RCA, because you are really gaining nothing by going balanced.
The only time where balanced signals are good is when used in recording studios or on stage, where long cable runs are the norm and where interference/noise pickup can be a real issue!
erhard-audio wrote:
The only time where balanced signals are good is when used in recording studios or on stage, where long cable runs are the norm and where interference/noise pickup can be a real issue!
rayton wrote:erhard-audio wrote:
The only time where balanced signals are good is when used in recording studios or on stage, where long cable runs are the norm and where interference/noise pickup can be a real issue!
It's depend, I would have disagree with your statement in my experience. For the sound quality, nothing much different but the hum is one of the cause.
I got problem just 6 " RCA to Revel sub and Mark Levinson amp, I got hum when using RCA but not XLR. The hum doesn't make the sound quality bad but it's kinda annoy when the music stops playing.
I have thinking about audio transformers instead of Op-Amps which doesn't need power. It's for my other preamp & amp that don't have XLR connection.
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