Yamaha DSP-E200 Processor

[Michael Bishop]

I purchased a Yamaha DSP-E200 sound processor for my current system,
which includes a Yamaha R-9 receiver and four speakers. The E200
offers digital delay to the rear speakers and includes several effects
such as concert hall, rock, dolby pro logic, etc. This unit is
intended as an add-on to an existing system, meaning that it provides
amplification to the rear (25x2 watts, delayed) speakers, but route the
main signal thru an existing receiver/integrated amp.

The unit is working fine, but one thing I noticed about the E200 is
that it appears that the sound coming from the rear speakers is mono,
not stereo - even though the E200 has separate amps for the left and
right channels of the rear outputs. I've noticed that the sounds seems
to be in mono no matter which effect is selected on the DSP processor.

Does anyone know why the the sound from the rear speakers is in mono,
and not stereo? Is that the way it's supposed to be? Does anyone know
if the more expensive DSP-2070 works the same way or does it offer
stereo separation for the rear speakers?

Thanks for all replies.

Michael Bishop
Phone : (303) 224-9212
Internet : cmbi...@csn.org
CompuServe : 71552,1341

[Craig Shore]

In <CCn2A...@csn.org>, Michael Bishop writes:
>The unit is working fine, but one thing I noticed about the E200 is
>that it appears that the sound coming from the rear speakers is mono,
>not stereo - even though the E200 has separate amps for the left and
>right channels of the rear outputs. I've noticed that the sounds seems
>to be in mono no matter which effect is selected on the DSP processor.
>
>Does anyone know why the the sound from the rear speakers is in mono,
>and not stereo? Is that the way it's supposed to be? Does anyone know
>if the more expensive DSP-2070 works the same way or does it offer
>stereo separation for the rear speakers?

I could be wrong, but I believe that all surround decoders have the
rear channels in mono. That's because the original signal only has
2 channels, and a phase difference in them to derive a third, which
is the rear channel.
But with all the new computer stuff driving the decoders these days,
who knows! I've just had a quick look through a review of the DSP-2070,
and listened to it in a shop, very nice. Quite expensive though. Can't
say i noticed if the rear channels were mono on that, and it doesn't
say anything in the review.

Craig.
--
:: Craig Shore. Phone +64 3 385-6554 (Christchurch, New Zealand.) ::
:: Scattered showers my arse - Noah. ::

[Scott Streeter]

craig> In <CCn2A...@csn.org>, Michael Bishop writes:
>The unit is working fine, but one thing I noticed about the E200 is
>that it appears that the sound coming from the rear speakers is mono,
>not stereo - even though the E200 has separate amps for the left and
>right channels of the rear outputs. I've noticed that the sounds
>seems to be in mono no matter which effect is selected on the DSP processor.
>
>Does anyone know why the the sound from the rear speakers is in mono,
>and not stereo? Is that the way it's supposed to be? Does anyone know
>if the more expensive DSP-2070 works the same way or does it offer
>stereo separation for the rear speakers?

craig> I could be wrong, but I believe that all surround decoders have
craig> the rear channels in mono. That's because the original signal
craig> only has 2 channels, and a phase difference in them to derive a
craig> third, which is the rear channel.

Your correct. The rear channel is a single channel. There is no left
and right like the front channles.
--
Scott Streeter
s...@wpi.wpi.edu