NetNews Usenet Archive 1992 #31/NN_1992_31.iso/spool/rec/video/15086

Internet Message Format | 1992-12-24 | 2.9 KB

Path: sparky!uunet!munnari.oz.au!manuel.anu.edu.au!sserve!actew.oz.au!ins_wayne
From: [e-mail]
Newsgroups: rec.video
Subject: Re: Outboard Dolby Pro-Logic boxes
Message-ID: <[e-mail]>
Date: 24 Dec 92 14:28:52 EST
References: <BzMr3L.BKM@da_vinci.it.uswc.uswest.com>
Organization: ACT Electricity & Water
Lines: 53

In article <BzMr3L.BKM@da_vinci.it.uswc.uswest.com>, [e-mail] writes:
>
> I would like to add Dolby Pro-Logic sound to my sound system.  I realize
> that I need three more speakers (right rear, left rear, and center), and
> maybe a subwoofer eventually.  My Denon integrated amp is too nice to
> scrap for an AV amp.  So I'd like to buy an outboard Dolby box with three
> channels of amplification for my new speakers.

  Sounds like exactly my situation; I had a Denon PMA720, thought
  about a Yamaha DSP E-1000 or 200, but ended up with an A-1000
  and a spare amp.  I still can't part with the Denon.  At the
  moment, I plan to wire other rooms for A/V through it.  I am
  very pleased with the A1000, but it definitely sounds DIFFERENT
  to the PMA-720.  I haven't decided whether it's better or not,
  yet.  It's in a different room now, with different acoustics.

> First off, does anyone
> have comments on current boxes (Yamaha has a fairly new one, and Audiosource
> makes a few, but I'm not impressed with Audiosource)?  Second, the manual
> usually states that the Dolby box is connected through the tape monitor
> circuit.  But this would tie up the tape jack.  My amp has a pre-out (output
> directly from the pre-amp).  Would this be too high a level to feed the
> Dolby box?  The Denon manual states that the pre-out rated output level is
> 1.0 volt.  Any comments would be appreciated.

  The Yamaha boxes at least, and I would think it safe to say "in
  general" work off a preamp loop as preferred setup, with the
  option of a tape loop for integrated amps that don't have a
  preamp loop (like the PMA-720).

  If you have such a facility, it should work very well.  The
  remote master volume on the Yamaha processors will control the
  master volume of the main amplifier by attenuating the return to
  the main amp from the loop.  You just set the main amp
  to about 50%, and use the processor for the rest.

  I'd say go for it.  Audition first, of course.  Unless you know
  exactly what you're doing, get someone to help you set it up for
  the first time.  You can make an unholy mess of the sound by
  playing with all those wonderful settings! :-)

  Start simple: just use the test signal to equalize the volume on
  each channel.  Then, over time, experiment with room sizes,
  initial delays, liveness, etc.  TAKE NOTES!

> Pete Prun
> [e-mail]

  Have fun!
--
Wayne Myles             Email: [e-mail], [e-mail]
System Manager,            Snail: GPO Box 366, Canberra ACT 2601, Australia.
ACT Electricity & Water       Ph: [phone] (w)  Fax: [phone]