Basic Interconnect Question


Hi,

I am running a Prima Luna Dialogue Premium preamp that has only unbalanced outputs.

Is it possible to buy an interconnect that would be unbalanced on one end and balanced on the other end so that I could connect to the balanced inputs on my Coda CS amp?

If so, would there be a sonic advantage to doing this?

Thanks,

Dsper
dsper
That can certainly be done, either with an adapter cable or with an RCA-to-XLR adapter. However I would advise against doing so, for at least two reasons.

First, your amp is specified as having input impedances of 50K unbalanced/1K balanced. 1K is an unusually low input impedance, and is almost certainly too low for your PL preamp to drive with good results.

Second, there are at least a few amps, such as certain ARC models, that will not work properly when their balanced inputs are provided with unbalanced signals. In those cases the power capability of the amp is greatly reduced, because half of the balanced signal path does not receive any signal. I don't know if that concern would apply to your Coda amp, but it is conceivable that it does.

Finally, even if those concerns weren't applicable, I would not expect there to be any sonic benefit from providing the amp's balanced inputs with unbalanced signals.

Regards,
-- Al
 
Excellent advice- Al.
"Is it possible to buy an interconnect that would be unbalanced on one end and balanced on the other end so that I could connect to the balanced inputs on my Coda CS amp? "

In a word, no. What Al wrote is correct.
A signal is either balanced, or not. Putting an XLR connector on the end of an unbalanced preamp output doesn't magically convert it to a balanced signal.
do not confuse XLR connectors  with balanced design
Dsper, why would you even consider it...
Dsper, unless you have a connection problem I wouldnt even go there, no reason or sonic advantage, rca's are just fine. well put cleeds, jl35, infection. I agree.


Matt

Well I know how to ask the right question.

This must be one of the few threads where everyone (but the OP) is on the same page.

Thank you for the sound advice!