Stereo Signals to Others Channels

[sparks98]

In my quest to build my system, I would like to hear music all around me. I've heard of Dolby Pro Logic IIx that can somehow simulate surround sound from a stereo signal through a 5.1, 6.1, 7.1 system. Does it actually redistribute or repeat a signal more than once to other channels (like I'd like) or put effects to other speakers? I'd prefer to maybe to this:



L R
LR



R L


What amp will do this or something like it?

 

[fergusonv]

That made no sense to me......
Could you reword the question or provide a better diagram?

Off the cuff without more clarification it sounds like you want 6/7 channel stereo.

 

[sparks98]

In my quest to build my own system, I need some advice on finding the right amp that will do what I want. I do know what I want and don't mind spending some money to get it. I want my system to be good for HT and when playing a CD (something in stereo), I want to be immersed in the sound. Meaning that I would like to possibly REPEAT or REDISTRIBUTE the LEFT channel (as well as the RIGHT) to more than one CHANNEL coming from the amp/receiver. I've heard that Dolby ProLogic IIx will do something to that effect, but not sure and salesmen seem to tapdance around the issue. It will be a 6.1 system, so the redirecting of channels to speakers must be done internally in the reciever. When playing something in a Stereo format (2 channel) I would like to do this:


L R
LR +sub





R L


Please help.

 

[Mudcat]

If I interpret this correctly:

1) When you play a movie, you want the surround sound.
2) When you play a stereo CD, you want it in surround sound.

The correct answer is almost any HT receiver will do this via several options:
a) Five/seven channel stereo
b) Pro Logic
c) Pro Logic II
d) DTS
e) DTS enhanced

If I'm wrong, someone will correct me.

 

[markw]

It still makes no sense.

The DSP logic in the receiver does all the mixing and channeling. With some of the newer units you have some rudimantaty control of the output level of the new "channels" but ultimately it's the chip that makes the decision.

Most receivers offer a "stereo 5" (or 6 or 7) mode along with the DPL/NEO and whatever else might be en vogue nowadays.

 

[MDS]

All Channel Stereo (5.1) will duplicate the Left front to the Left surround, the Right front to Right surround, and sum both the Left and Right fronts and send that signal to the Center. If the receiver is 7.1, the Left and Right front channels will also be duplicated in the Left and Right rear surrounds as well.

PLII(x) will utilize all the speakers but does not simply duplicate the channels like All Channel Stereo. There are other 'matrix' decoders that work similarly, but their algorithm is slightly different, and the results therefore slightly different (DTS Neo:6, Circle Surround, Logic 7, Anthem Logic, etc). Most modern receivers include at least PLII(x) and DTS Neo:6. Some also include proprietary 'surround fields' with names like Orchestra, Studio, Live, etc. There are plenty of options to utilize all the speakers when playing a 2 channel source.

Your diagram doesn't really convey what you are asking for but if the intent is to arbitrarily assign one channel to one or more other channels, then no there is no pre-processor or receiver that can do that. That would truly make a mess out of the sound. The matrix decoding algorithms are based on acoustic principles and have years of research behind them.

 

[~JC~]

MDS got it

All Channel Stereo (5.1) will duplicate the Left front to the Left surround, the Right front to Right surround, and sum both the Left and Right fronts and send that signal to the Center. If the receiver is 7.1, the Left and Right front channels will also be duplicated in the Left and Right rear surrounds as well.

The way I read it, this is what he is looking for. My Onkyo does this, don't most receivers?

 

[sparks98]

L................................R

..............LR+sub..........





R................................L

Schematic kept getting jumbled together, that's more like it. Kind of like the way stereo comes out in a car, except with a sub. Salesmen all say that anything in stereo will only come through my 2 center speakers (channels) only and I'd have to find a special receiver. I had it set up like this in my old house, but through 2 channels, R and L. That won't work in HT. I just want to do it all through a receiver that can and not have to reconfigure the wiring between movies and music.

 

[jcPanny]

Speaker setup

If you only want stereo sound, all you need is a stereo amplifier and maybe a speaker switch box. Buy the way, a pre-amp processor does all the DSP modes and processing. A receiver includes a pre-amp and amplifier. An amp usually refers to an outboard amplifer with no processing.

 

[sparks98]

No, I want both. Home Theater setup and use it for music (most being in stereo).

 

[zumbo]

L................................R

..............LR+sub..........





R................................L

Schematic kept getting jumbled together, that's more like it. Kind of like the way stereo comes out in a car, except with a sub. Salesmen all say that anything in stereo will only come through my 2 center speakers (channels) only and I'd have to find a special receiver. I had it set up like this in my old house, but through 2 channels, R and L. That won't work in HT. I just want to do it all through a receiver that can and not have to reconfigure the wiring between movies and music.

There is, as mentioned, a seven-channel stereo mode that will run every speaker connected to the receiver. It will not make your right rear become your left, and your left rear become your right. That is crazy.

As far as I know, all HT receivers will play all channels in stereo, if thats what you want.

The very best way to achieve what I think you want, is to invest in a SACD, DVD-A, or universal dvd player and utilize the multi-channel analog outputs.

 

[sparks98]

Having the OPTION to make a rear left channel into a right (stereo) channel is optimum. Ever listen to the Beatles, they're stereo skills sucked. If I have to settle for just using ALL of the speakers when in stereo mode, then that's okay. Most HTIB systems will NOT permit the use of any other speakers than the center speakers when in stereo mode. Even the salesman in Tweeter told me that. Look, of all the people that I've spoken to, including the sound professionals I might work with from time to time, YOU GUYS seem to know far more about actual practical sound stuff. The expert sound guys for major bands that I work with at concerts know ONLY of the stuff they use and apparently nothing more. Thanx.

 

[MDS]

Most HTIB systems will NOT permit the use of any other speakers than the center speakers when in stereo mode. Even the salesman in Tweeter told me that.

In Stereo mode, the center speaker will NOT be used unless you have a dsp mode like All Channel Stereo or a matrix decoder like ProLogic II engaged. Shame on the salesman for promulgating false information.

I won't question the reason you would want to send the Left channel to the Right rear speaker (sounds silly and useless to me) but you should be able to get something close to what you want with one of the available dsp modes.

 

[sparks98]

Thanks for advice. I'd just hate to have a kick *** system and not have Led Zepplin coming at me from all of the speakers, which will probably be Klipsch's.

 

[zumbo]

Two best ways to have Led Zep come out of all speakers. You would not believe the sound quality of the dvd I am listing. If I want to hear Zep, I put it on. And I have the remastered box set of every recording. The dvd sounds way better.

dvd
1) http://www.amazon.com/gp/product/B00008PX8P/qid=1138763236/sr=1-1/ref=pd_bbs_1/103-3124854-7676624?_encoding=UTF8&v=glance&n=130

I can't comment on the sound quality of the dvd-a. I have "how the west was won" on cd.

dvd-a
2) http://www.amusicdirect.com/products/detail.asp?sku=CATLDVA83587-2

 

[sts9fan]

A stereo recording played over 5 or 7 channels sounds like crap and confuses the music.

 

[fergusonv]

A stereo source played with the rear left and right swaped will sound even worse. I can not think of any logical reason why you would want your left and right rears swapped. I am quite curious and would like for you to explain. It is still coming from all speakers when they are not swapped so what is the advantage?

 

[jcPanny]

A/B speaker selector

If you really want to implement your weird wiring of the rear speakers for setereo listening, the easiest way to do this would be a simple A/B speaker selector switch. In one position, the surrounds would be wired normally for HT listening. In the other position, the surrounds would be wired backwards for your desired music configuration. This would work with just about any HT receiver.

 

[sdy284]

A stereo recording played over 5 or 7 channels sounds like crap and confuses the music.

my thoughts exactly, my tunes sound so much better pumping through my alpha 50's & PB10....and thats it! 2.1 is the way to go for analog stereo recordings.

 

[sparks98]

To answer you question as to why I'd do that, my room is rectangular and I'm either on the far right or left side of it. No problem with HT, but in Stereo I will be Right or Left dominant. Set up like I want it, stereo on either side of room. I'm not a nut who positions himself in a room before turning on the receiver, so I'm adjusting the system to accomodate me. Practically, it just works out better. You'd have to try it to know, someone suggested it and I've been doing so ever since I tried it out. Beatles.