Two-channel is inferior to multi-channel, no?


I think that 2 channel is inferior, though, of course, my ears and reason may be mistaken.

Feedback please!

The obvious reason, I am thinking, it is that two channels are less representative of infinity (live music) than 3, 5 or 7, etc. This is the case even if the transducers, amps & speakers, and room acoustics, are perfect (dream on...) in the 2-channel mode.

In my own system, two Revel M-20s as center channel, vertically arrayed, with Revel M-50s on either side, there is the occasional CD (jazz is my thing) that sounds better in stereo, than with 5.1 processed sound, but this is rare. Most sound better with the center channel prominent (either in Dolby Standard or Music modes).

It's possible that I simply need better equipment.

But then why do I find that the best sound (in my system) is from digital sources, e.g. DVD, Blu-Ray, SACD, whether the sound reproduces music or movies. Would better equipment neutralize (and even flip) this negative comparison of stereo to multi-channel reproduction? If so, what is the explanation?

What I find in particular (for music and movies) that is that digital sources in multi-channel mode give full breath and focus to the center channel, placing this important sound component exactly where it should be: precisely in the center of the room. And giving the other channels 'room' to shine (though, in my system, given the amplification available, this should not problem).

What am I missing in theory?
pmcneil
I agree W/Criderfive. Just had a guy I trust tell me that most DVD players and theater preamps do NOT fully convert all of the sound into 2-channel. So am I missing some audio???? Anyone else heard this?

BTW I am a 2-channel guy, 2.1 anyway. I was an Adcom/Klipsch rep in Japan. Bought my first surround sound in 1990. Thought it sounded like crap. Upgraded my surround speakers. Sold them for a $30 loss. I have set up a LOT of homes with surround. They ALL sound like crap, except for one seat. If I sat anywhere else, the speaker 12 inches from my left ear is way too loud and I can't even hear the one 10 feet from my right ear.
My experience is that 2 channel is better than home theater and here is why (I hope I can explain this in a way people understand).

When I have used a Surround sound processor I never used a center channel, because if you have the right speakers set up correctly they should project a huge sound stage and image so well that the sound fills the room and you have a sense of some depth, however when I used a center channel, soundtracks are usually mixed so most of the info comes from the center, and even if I used two speakers there is no stereo center only mono. So bottom line is that the sound stage always lacks when I used a processor.

Also I have two large full size main speakers, but most soundtracks are not mixed to take advantage of two large side channels. Most info happens in the center channel. So my main speakers never get used to their full potential. Also the processors I have used always seem to take info away from my speakers and send it to the sub. I used full range speakers on all channels of my previous home theater but the processor would never let them sing like they do in plain stereo. I did A B comparisons and in processor mode the speakers always sounded less than full range. Even if I manually went in and set up the menu, I figured it must have to do with the processing protocols.

The other problem is, once I had all things set up and sounding decent with one movie, all channels at the right level etc. I would pop in the next movie and would have to go back in and change the channel settings again because the surround is too soft or too loud, I guess just because of the way it was mixed.

Then there is the constant, or I should say inconsistent standard of audio. I had my system set up like a 7.1 system, side and rear surround plus mains. But when they release the new movie with HD sound it was only 5.1, then the next one is 7.1 but wait then they release the worst 6.1, 6.1? So when I watch Star Wars I only get one rear speaker working? I have to move the speaker to the center of the back wall just for this movie?

I got so tired of it, I love tubes and used Tube amps on all my channels in my home theater, I had 5 tube amps. I came across the Decware multi channel tube Pre-amp and was about to buy it, even tho it was not set up to do 7.1, anyway I had an injury that had me stuck in bed for two months, during this time I had a temporary system set up in my bedroom that was a simple two channel set-up. Wow, changed my life forever, as soon as I was well enough I sold all my home theater gear and invested In a very nice hi-end 2 channel system that blows away any home theater I know of personally. Of course, this is just my ears and my opinion.

I will never go back to Home Theater.

Processors I have used over the years include, Cary Cinema 11a, McIntosh MX-119, Outlaw Audio, Marantz, Kenwood, Rotel.
As a young child I started out as a two transistor radio listener. In my teens I discovered magazines and catalogs with pretty pictures and reviews. I was bound and determined to buy a stereo. I built my own speakers, bought a Pioneer SA-8100 integrated amp and a Kenwood receiver. Back then, Cassette players were the rage for recording. The medium of choice were vinyl LPs or 45s. Typically, the only sound arrangement available was two speaker stereo or mono. Having lived in the San Francisco Bay Area, I attended many concerts. No matter where I sat or stood the music came at me from the front.

I now have a nicer system than that original two transistor radio. I have a dedicated stereo system and a dedicated surround system. I can switch back and forth between the two while playing music.

Music, it comes at you from the front and sounds better.

Movies........sound effects. Things are happening around you, so you get sound around you.

For music, stick with two channel. If your speakers are positioned properly and you have good room acoustics, the sound stage should have you identifying the vocals and instruments left, center and right.

For the bling, bling of movies............surround is good;
Things blowing up, jets, cars, and other sound effects, fine. For music, not so fine.
Well put Frank!

[soap box on]
>>Things blowing up, jets, cars, and other sound effects, fine.

Sad to see (pun intended) that many of the current movies are just a cacophony of latest sound effects and done over a zillion times but now bigger, 3D and whatnot gizmos. The real story behind it gets lost and in the background (pun again intended).

Hollywood, wake up! Be creative, think more, copy less! To the movie goers that want to escape reality I say: try travel more/farther away.

[soap box off]
Although I can achieve some very impressive results with just L/R speakers, I gotta say. I recently upgraded and (this is important) So that all my speakers (L/C/R/SR/SL) are identical in performance @ 125watts RMS per L/C/R/SR/SL channels @ 8 ohms - .008 THD, but I run them at 12 ohms to lower the Total Harmonic Distortion a little, and since I have so many drivers - output, SPL, and clarity doesn't suffer.

They can handle the whole show on their own with out the subs on. Each channel consists of Vifa 6" drivers, three per channel and three tweeters per channel as well. That's fifteen 6" drivers and tweeters (bi-amped for the L/R channels).

Also the benefits of multi channel sound doesn't end there, the sub woofer output has it's purpose.

I know this is over kill, but when I'm watching a movie and gun shots ring out. I want the neighbors to call the cops, you know, that kind of dynamic range.

So my subs are broken up into frequency categories if you will. I have six 6" JL Audio subs under the center channel (ported and tuned to 50 Hz). Under the L/R Monitors I have four sealed 12" Kicker Still-water subs, two per side. And behind the flat screen I have four ported long throw 8" subs by MTX, above that resides two Momo 12" subs in a whooping 18 cubic feet (9 per) of ported madness directly aimed at 30 Hz and below, and lastly above that I have two Dynaudio 12" subs in a bandpass box aimed at that low end also.

So I would take the Pepsi challenge with a stereo setup any day, I mean come on - More channels with more power, setup at a lower impedance - means equal (if not better output) and lower distortion in the process.

I haven't even gotten into the many amps and power system I've got running this setup, but, rest assured the cops are on the way.

Andrew
Synesthesia Studios