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In Reply to: RE: Can I Connect Both XLR And RCA Outputs Simultaneously? posted by erik on June 09, 2016 at 04:58:52
My main concern was if I possibly can damage the CDP connecting it the way I describe.
Here's what I try to achieve - when I received the piece, I used the RCA cable since I didn't have a balanced one. It sounded nice. Two days ago got balanced Acoustic Zen Matrix Ref ii cables, and sound became loud, which is understandable, but pretty bad, very heavy on bass, causing headache. Now I was thinking to connect both of them for switching the inputs to see if the RCA will do the same, even though it didn't before I got the Xlr.
The CDP is brand new, AZ cable is also new.
Follow Ups:
I very much doubt that connecting the two at once would cause physical damage to any of your equipmemt.That overdriven type sound, may be just that. Overdriven. The likely much greater signal amplitude of the XLR output may be overdriving the following gain stages of your amplification chain. As was pointed out earlier by PAR, you would need to match signal amplitude between the RCA and XLR outputs in order to validly compare them. If lowering the system volume control doesn't eliminate the overdriven sound then you should stay with the RCA based interface.
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Ken Newton
Edits: 06/09/16
Thanks for your response, Ken. I connected both outs, and the Xlr is definitely bad - too much bass, ear-piercing highs etc. I'm using RS spl meter to stay at same volume level, and the RCA sounds incomparably better. Everything sounds just great, even though, EC player is a balanced unit, and my gear is also balanced, their (EC) preferred connection is balanced.
At this point I don't know what to think.
erik, the following is probably a stupid question on my part. It sounds like you may be comparing the sound of the balanced outputs while the RCA are also connected to the preamp. You are not doing that, you are disconnecting one type of interface when listening to the other, yes?
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Ken Newton
Ken, I did it both ways, no difference.
I agree with Ken. The pre-amp's input is being overdriven. The EMC -1 series of CDPs have specified outputs of 2.3V for RCA and 4.6V for XLR. There's the potential problem.
I am assuming that you are using your BAT pre-amp? Maybe BAT could offer advice.
A classic way of dealing with excessive voltage applied to an input is to attenuate the voltage by using, for example, in-line attenuators either as a plug in device or by padding down the output by adding a resistor network to the interconnect cables. My advice is don't as it screws up the sound in my experience especially small dyanamic shifts. It may simply be better to stick with the RCA connection.
I really appreciate your response, PAR. This is a very frustrating experience. Yes, I'm using it with my BAT gear, and definitely don't want to add attenuators or resistors. I'll try to return the cable first then I'll see what to do. My head is literally exploding.
" head is literally exploding"? I hope not as I hope that you'll be with us long enough to solve the problem :-)
Hahaha, don't worry, PAR, I'll be around. The CDP is going back, BTW. Stopped working. Complete POS.
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