Adding another back channel or 2 new front - AVS Forum
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post #1 of 6 Old 08-26-2013, 08:25 AM - Thread Starter
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Hi,
I have the opportunity to upgrade my center speaker. I run a 7.1 system via MX150+MC402+MC207.
Hence, I can re sell it or add a third back channel.
Would that make sense to add a 3rd back channel ? Anyone has some experience to share ?
In that case, how can I set this up between the MX and available MC207 channel both from a cabling and MX parameter point of view ?
Thanks in advance for your feedback and advice.
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post #2 of 6 Old 08-26-2013, 09:21 AM
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Quote:
Originally Posted by blaste View Post

Hi,
I have the opportunity to upgrade my center speaker. I run a 7.1 system via MX150+MC402+MC207.
Hence, I can re sell it or add a third back channel.
Would that make sense to add a 3rd back channel ? Anyone has some experience to share ?
In that case, how can I set this up between the MX and available MC207 channel both from a cabling and MX parameter point of view ?
Thanks in advance for your feedback and advice.

I had a 6.1 system for about 8 years. It was a Dolby Digital Pro Logic Iix, what you have is the IIz that has 2 speakers rather then one. I went to a new AVR that is 7.1 and used the 2 fronts for the new rears, and the rear center, same unit as the front center, was moved to the front for a high and low center. I wired them up using a parallel circuit giving a 4 ohm load, ran the Audyssey setup and ended up with a really good strong sound stage. I don't think a 3rd back channel would do much but you can try and see if it works.
Take a look at this for a how to. https://www.google.com/#fp=5a1f885aef9b8669&q=series+speaker+wiring+diagram
Or try what I did with the extra speaker.
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post #3 of 6 Old 08-27-2013, 02:50 PM - Thread Starter
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Thanks for the feedback
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post #4 of 6 Old 08-28-2013, 05:44 PM
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Quote:
Originally Posted by Phil17108 View Post

It was a Dolby Digital Pro Logic Iix, what you have is the IIz that has 2 speakers rather then one.

I believe the correct designations were/are:

Dolby Prologic II 5.1 ch

Dolby Prologic EX 6.1 ch (adds back spkr) Dolby EX

Dolby Prologic IIx 7.1 ch (adds stereo back speakers)


Dolby Prologic IIz 9.1 ch (adds stereo front height speakers)

Noah
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post #5 of 6 Old 08-28-2013, 06:40 PM
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Noah, no "Dolby Prologic EX".

PLIIx can be 6.1 or 7.1.

EX was the encode/decode scheme to extract a surround-back channel from discrete 5.1 sources.

Sanjay
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post #6 of 6 Old 08-29-2013, 05:10 PM
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Thanks for the clarification, Sanjay.

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