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In Reply to: Re: Hot Setup? Pre/Pro for HT and 2ch posted by Pam on June 06, 2001 at 22:29:58:
Pam,I have a question above which is very similar to the set-up you are describing. However, one distinction is that you are connecting the receiver's pre-outs into an aux input on your Bryston preamp whereas my dealer suggested connecting the receiver's tape-out to the preamp's aux input. According to this particular receiver's specs, the preout has an output level of 1 V (Impedance 470 ohms). Whereas the Input sensitivity of a pre-amp is generally 200 mV (Impedance 50 kohms) impednace. In other words, you are feeding your pre-amp a signal that is five times as strong. I think that the pre-out is meant for connecting your receiver to an external power amp, not a preamp.
Please understand that I am confused and I am trying to get a clarification here. Is it better to connect the receivers's tape out or the pre-out to the preamp? My concern with the tape out approach is that I may not get the surround effects if the signal is going out through the tape-out connections. On the other hand , with the pre-out you are boosting your signal twice.
Follow Ups:
> > I have a question above which is very similar to the set-up you are describing. However, one distinction is that you are connecting the receiver's pre-outs into an aux input on your Bryston preamp whereas my dealer suggested connecting the receiver's tape-out to the preamp's aux input. < <Pam's method is correct, your dealer is wrong. Using the tape-outs on the receiver would bypass the receiver's volume control. With Pam's set-up, the level of all five channels in HT mode is controlled by the receiver.
> > According to this particular receiver's specs, the preout has an output level of 1 V (Impedance 470 ohms). < <
1V is the maximum rated output. However it is continuously variable from 0V to 1V by using the volume control.
> > I think that the pre-out is meant for connecting your receiver to an external power amp, not a preamp. < <
Many people here, including me, connect their HT front channel preamp outputs to a stereo preamp. The trick is, set the volume control on your stereo preamp to a setting so that it isn't adding a lot of gain. I find setting my stereo pre to the 12:00 position works very well. Maybe a lower setting would make you more comfortable. It doesn't really matter, as long as it's repeatable and it's within the range of your HT processor to balance the front channels with the others.
> > Is it better to connect the receivers's tape out or the pre-out to the preamp? My concern with the tape out approach is that I may not get the surround effects if the signal is going out through the tape-out connections. < <
It's better to use the pre-outs. You would still get surround effects with the tape-out connection, but you would be controlling the main channel volume with the stereo preamp and the rest of the channels would be controlled by the receiver's volume control. You would have to re-balance the two volume controls every time you want to change the volume on a movie.
> > On the other hand , with the pre-out you are boosting your signal twice. < <
Only if you balance your front channels with the stereo preamp volume control set too high. Don't forget, your preamp does not just increase volume, it also attenuates. As a matter of fact, that's all it does with most CD players, because they don't need any preamplification.
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