Axiom Home Page Forums General Discussion Home Theater SMALL vs LARGE (especially you Onkyo/Denon owners)

http://www.avsforum.com/avs-vb/showpost.php?p=15306859&postcount=9349

is a must read for someone who's setting up HT and saying "hmm, my mains are large, so I'm going to set them to LARGE" I wish EVERY vendor was as responsive as Chris/Audyssey.

But there is still certain occasions where you would want the double bass effect, say one sub in a large room and the M80s set to large and LFE+mains could possibly help even out the bass.

Thanks for the link Hansang.

Hu.... That sounds pretty compelling. I think I'll have to play with this some more.

In regards to this quote.......

"If they happen to overlap in frequency response then you get double the bass--not good"

.......would the M80's and the EP600 have an overlapping FR?

M80s are listed at +/- 3db all the way down to 34 Htz so that's pretty capable in the low end. If your crossover is set to 80 Hz, then very roughly, everything from 80 Hz down to 34 Hz would be produced from both speakers.

Edited to say:
but that shouldn't mean you don't need a good sub. Setting a crossover and setting your mains to small lets the subwoofer handle the lows as it can
-- less effort,
-- maintain the proper volume levels even at Very low frequencies (sound levels drop of very ver quickly after M80s hit their 34 Hz limit)
-- and may even keep the bass cleaner at the extremely low levels.

It also frees up your mains so it they can concentrate on what they do best.

That’s my case in my room. I had swings of up to +/- 10dB below 100Hz with just the EP500 placed as best I could. With the M80s set to large nothing from 100Hz down to 40 is more than +/- 2 dB. Below that it’s still a mess but can’t see a second subwoofer until I get out of the apartment and know what my final HT room will be.

Also since due to space I had to move my sub to the back of the room, (a few to many EP500 vs little toe battles, guess what won?) and I lost the bass impact coming from the front. I like to feel the direction explosions are coming from on screen since in the real world that’s how it is regardless the low frequency sounds being non directional in a room.

So for my situation right now I’m very please with having the LFE+MAINS option available.

That 34 hz limit is more room dependent than you might think. I would suggest graphing out the low end with all the variables and then go with what sounds best in spite of what you might see

you want the LFE from the other speakers to be directed to the sub, not the mains (when using LFE+main). If a sub is placed correctly, small should be the best setting, no matter the room.

unless of course it is possessed.

When you say "if your crossover is set to 80," does that mean on the sub or on the mains? I think you mean on the sub, correct?

Jason