Axiom Home Page Forums General Discussion Stereo Are M60/80's overkill for HT?

I agree Wid, I would prefer 80 over 100hz on the 22's, if I owned them, matched with a 500 would be killer.

danmagicman has a very good point, and since cman is talking about a "relatively" small(14x16)listening room, and may well wish to go with a VP100 and QS4s to go with M22s, then 100hz would be a good crossover point if the receiver he uses is capable of only one freq for all speakers.

That is; if those are the complement of speakers he goes with.

Just an observation
Rich.


Oops!...I just observed that that's the complement of speakers danmagicman has.....me bad

Still,...it makes sense!!

I agree about the 80 Hz. My M22tis are crossed @ 80 Hz with an SVS pci 20-39. My sub is located up front as well. To me this sounded better than crossing @ 100 Hz (or 60 Hz for that matter). The receiver is a Pioneer Elite 55Txi, so I'm pretty confident that it is doing its job correctly.

But as previously stated, it's a matter of personal preference. To the OP, try out several settings and see what sounds best to you.

Regards,
Rich

That's a fair point but the VP100 and QS4s still has usable output below the +/-3db point. That's not counting the sub when crossed over @ 80 will still be producing frequencies above that point.

CM, welcome. With room reinforcement in that size room(not much different from where I have my M22s)you can expect good bass down to about 50Hz without a sub, with significantly lower output, but still usable, at 40Hz. With a sub crossed at 80Hz you should have excellent results with the M22s, including all the loudness capacity that should be needed.

I have experimented with the crossover setting at 40Hz, 60Hz, and 80Hz. The overall audio experience is slightly different at each of these settings. Right now I am using 80Hz. This is the recommended setting for THX movies. Everything seems to work together best at this setting. You should try out different settings and see what works best for your room.

If M80's can go well to 20 Hz, why the crossover at 80 Hz?

Does the sound just sound...deeper if it comes from the sub? That's what I'm trying to figure out.

Probably clearer more than deeper. M80s can make quite a bit of bass but at high volumes the woofers have to move quite a bit to generate that much bass, and by eye they seem to approach the point where the non-linearities from flapping out near the limits of the rubber surround has to be having an effect on the lower midrange frequencies.

If you cross over at 80 hz most of the "cone flapping bass" is handled by the sub, which (a) has a bigger driver and is better able to move the air, and (b) is not handling the important upper bass/lower midrange so that frequency range stays "clean".

It's all debateable, of course. You can also argue that the sub will hit ITS limits sooner if you cross over high, vs. crossing over low where it only has to carry a narrow frequency range and less energy. In fact, if you have a wussy sub relative to room size and desired SPL one trick IS to take the crossover frequency real low so it doesn't have to work so hard.

Dang John,

I wanted to say the same thing, but for some reason you always have a way with words, and make it easy for people like me to understand. U Da Man....

Well, now I understand. Thank you sir.