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  1. #1

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    Default Help - Rear channel Monitor 30s aren't working well with music

    Please advise me on how to fix this:

    My setup is:
    Pioneer VSX-1015TX receiver
    CS2 Center Channel
    Monitor 60s up front
    Monitor 30s in the back
    Velodyne DPS 12 for sub.

    Everything sounds GREAT, but when listening to music in Dolby Pro Logic IIx (or Dolby Pro Logic IIx Music) the rear channel develops this bad echo. In dolby digital mode I haven't detected the noise yet, but I'm going to check that tonight. You can only hear it if you're really close to the speaker. It sounds kind of warbled and it's only on the lows and mids. The highs sound great.

    I've tried other modes like Neo, THX, etc and can't get it to go away. In regular stereo mode, only the monitor 60s and sub are working.

    I'd like to get all 5 speakers playing, but without the weird sounds out of the rear speakers.

    I think one of these may be the possible culprits, please advise:
    1. Receiver/Dolby Pro Logic IIx is distorting the sound for some sort of effect. You really can't hear it unless you're right next to the speaker. From distance it's not noticable.
    2. Speaker distance settings are about 8 feet higher than the other speakers.
    3. Potential short in speaker wire cables. My speaker wires are running under the carpet pad, and my main couch is fairly heavy. It's possible the couch is somewhat shorting the wires. I think this is a long shot though because the wires are under the pad, the wires are 14 guage, and are high quality, and the highs sound great. If it was a short, I'd think the highs would be the first ones to suck.
    4. The speaker wire doesn't have a positive, negative side, so it's possible the phase is off, but I tried it in both positions, and based on my ear tests, I'm fairly certain they're both in the right phase.

    What do you guys think?

  2. #2

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    Also, the Monitor 30's are facing up (bottom on the ground). The port does have some clearance because the Monitor 30's have those speaker stands and feet on them (the feet led me to believe they'd be ok in this configuration).

  3. #3
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    i guarantee you it's normal. DPL IIx and D.Digital aren't the same. One's an encoding process in the digital domain. The other is an analog post- digital signal processor. That being said, surrounds never have direct sound qualities unless it's from SACD or genuine Dolby Digital and DTS for movies. Never for something like DPL IIx, DTS Neo:6 or Logic-7.

  4. #4

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    Quote Originally Posted by aaharvel
    i guarantee you it's normal. DPL IIx and D.Digital aren't the same. One's an encoding process in the digital domain. The other is an analog post- digital signal processor. That being said, surrounds never have direct sound qualities unless it's from SACD or genuine Dolby Digital and DTS for movies. Never for something like DPL IIx, DTS Neo:6 or Logic-7.
    I totally understand the differences between DD and DPL, but I just figured DPL would reproduce the stereo from the fronts (from the source) and copy it in the back. I don't understand the distorting and I don't think the effects are worth anything. It does do a normal job with the center channel, just combines the L/R signal. However, for clear imaging you're probably best just running the two front towers with the sub. I do like DPL for TV stuff, so putting it in stereo for music and DPL for TV will require switching the receiver input :(

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    In DPLII and DPL IIx the surrounds don't copy the stereo from the fronts. If you want your receiver to do that then you need to switch it to 5ch. or 7ch. stereo. =)

  6. #6

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    Quote Originally Posted by aaharvel
    In DPLII and DPL IIx the surrounds don't copy the stereo from the fronts. If you want your receiver to do that then you need to switch it to 5ch. or 7ch. stereo. =)
    Hmm haven't figured out how to do that. When I go to stereo it's only two channels, I don't even get the center channel. I'll play around and see if I can find that feature.

  7. #7

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    My 5 channel mode is under the "entertainment mode on the Yamaha receiver. I don't use this mode much as the DPll because it is just straight stereo to the rear channel, and is too overpowering, and ruins the front soundstage.

  8. #8

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    It has many names. Entertainment mode, party mode, etc.etc.

    Check the distance settings for the rears. The AVR will set a delay according to distance, that may be your problem...
    I smell ass, burning ass, glowing cherry red spanked ass.

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