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Question about Pioneer Elite VSX-36TX

Forum Audio : Audio Technology - Question about Pioneer Elite VSX-36TX

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I've owned a Pioneer VSX-36TX for 2 or 3 years and have been quite
happy with it.

Recently, I acquired an HDTV, and with it a digital cable box from our
local cable service. The cable box has a jack for an optical cable
which will deliver Dolby Digital sound.

When I hook this up to my Pioneer unit, using the "TV/SAT" component
intput, the only sound I get comes from the regular L and R
speakers--nothing from the center or two surround speakers.

The strange thing is that if I re-assign that optical sound input to
"DVD/LD" instead of "TV/SAT", then the problem goes away and I get full
surround sound from all 5 speakers.

Additional info: The display on the front of the receiver is the same
in both cases. It clearly shows that the Dolby Digital signal source
is present, and that all 6 channels are active: L, C, R, LS, RS, and
LFE (subwoofer).

Apparently the receiver's DVD/LD input source can properly output these
signals, but the TV/SAT source cannot. Anybody have any clue why? I
was not aware of any inherent differences in how the receiver processes
these two input sources, and I can find no configuration settings that
would vary between those two sources. As best I can tell, I can assign
any of the 5 digital input jacks to any of the following functions:
DVD/LD, TV/SAT, CD, MD, VCR1, or VCR2.

To confirm the problem, I assigned the Dolby audio output of my DVD
player to each of the various input sources. For the following, it
worked fine and produced full surround sound: DVD/LD, MD, VCR2.
However for TV/SAT, CD, and VCR1 I only got sound from the L and R
speakers. No cables were physically moved during this experiment. The
assignments were all done via the setup menu.

Any suggestions and/or ideas about what's going on would be
appreciated.

Thanks!

Kiteflyer

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Speaker recommendation
By astrallite, 2 days ago:

Try this: Sherwood 5.1 receiver ($172 shipped). http://www.amazon.com/Sherwood-RD6 [...] 05&sr=8-10 Energy Take 5s ($199) http://www.newegg.com/Product/Prod [...] 20take%205 Dayton Sub 80 ($75) http://www.parts-express.com/pe/sh [...] er=300-631 This should come out to $450. As far as Bose goes, unless you are talking about the x01 series from the 70s (which were pretty good back then), their modern speakers are just clock radios designed for decor-conscious older people who need invisible speakers. Acoustically they are no better than your typical PC satellite speakers (I'm being generous here, they are probably worse than high end PC speakers); they really are nothing more than a couple of thin plastic cans. The satellites replacement drivers that you can request from Bose cost $2 (low quality untreated paper drivers) and the satellites themselves are built with thin cheap plastic enclosures. That should give you an idea of build quality...it's basically a product with 95% markup. I doubt their $1000 acoustimass systems cost more than $50 to manufacture. To give you an idea what a value product is, in my bedroom I have a pair of Ascend Sierra 1 bookshelf speakers that go for $800/pair. The tweeters that Ascend purchase from SEAs of Norway cost $200/each, or $400/pair. Include the cost of diamond drill bits for industrial cutting tools needed to cut through 3/4" solid bamboo enclosures, the long-throw injection-molded poly midrange/woofers, and a high gloss piano black automotive finish and you are talking about $600 manufacturing costs. After shipping and handling, I doubt they make more than 25%, a fraction of Bose's margins. It's called name brand markup. That said, it's your money, if you want to buy it, it's your prerogative. And to your room, it's about 11x11 as I understand it? It's not THAT small. I'm running a pair of bookshelf speakers that run 60lbs on 80lbs of solid metal stands and they work fantastic in a 166sq foot office (only slightly bigger than your room).

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