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My QS4s and VP100 are crossed at 100 Hz. I don't think 120 will be a major problem; you may know exactly where your sub is, though!

Although 120hz seems a bit to high give it a try and see how it sounds.You can always upgrade your receiver at a later date.

thanks, now if i'm only 5'10". I wonder if that means my closer proximity to the floor means that I will be able to localize it much easier than say the Seqoia sized Bridgman.
Sips

Two comments :

1. I haven't measured my height for a while but I was roughly 6-5 last time I measured, which was years ago. I may actually be 5-9 just like everyone else...

2. A 120 Hz crossover should be no problem other than a bit of sub localization as others have already told you. As long as you can put the sub somewhere near or (ideally) behind the TV that shouldn't be much of a problem...

As usual, John beat me to the punch with the recomendation I was going to make: Although the 120Hz crossover isn't likely ideal, if you keep your sub centered as much as possible it will be harder to localize than if you put it off to one side or a corner.

Now can we get back to the height issues? Window, we're notorious around here for going OT into friendly banter! Welcome!

>>As usual, John beat me to the punch with the recomendation I was going to make:

By almost an hour this time. Admit it, you stopped for dinner, right ?

I was without power all afternoon!

But Someday.... I don't know when..... but Someday.... I'm gonna post before you and you'll have to agree with me!

Oh Wow!

This IS getting exciting! Just another good reason to keep watching!!!

Alright, some new thoughts. If my receiver's x-over is at 120Hz would I still run the sub's at it's max? I assume if run this sub's x-over less than 120Hz I would have a hole between the two like Bridgman was talking about earlier in the thread. What about the option of running the sub from it's speaker level input and having the 22's run at full range? The 22's will naturally roll off at their inherent response and I could then set the x-over on the sub at say 100Hz. The only thing I'm not sure of is the effect on LFE signals. If I don't hook the sub up through the RCA sub out of the receiver does that mean I will lose the LFE info encoded in DD/DTS?

Another consideration. I hope I'm not bogging this reply down, but I have a ? about surround placement. My home theater placement is such that behind the listening area it is open to the kitchen on the other side of the house. The QS4's would be mounted to the side of the listening position at the recommended height. My concern is that there will be no rear wall to speak of. Is anyone out there in this same situation and if so should I start thinking of alternatives? I've heard the QS's are forgiving in placement, but what should I expect with the back tweeter firing into basically an entirely new room? Just looking for some thoughts.
Sips

Any escape might help to smoothe the unattractive truth..

OK, now you understand how it all works. Good show !

1. Yes, if the sub's crossover is lower than the receiver crossover and you are letting the receiver crossover control what goes to the mains (and other speakers) then you will get a hole.

2. If you use the speaker-level connections for the sub then the sub would only get LF signals originally intended for mains -- LFE, plus low notes from center and surround channels would be lost.

However, there is a trick -- some receivers will automatically send LFE plus the stripped off low notes from center and surround to the mains if you tell the receiver you don't have a sub AND that your mains are "Large". In that case the mains (and hence the sub) would get LF signals below 120 Hz from all of the channels. The M22s would handle down to their rolloff, and the sub would start to pick up as the M22s roll off.

The quality of the resulting system would depend on how the rolloff of the sub and the M22s matched up... AFAIK M22s are fairly easy to match with a sub.

Personally, if your receiver had a 120 Hz crossover I would stay with the simple approach -- just run the M22s in Small, hook the sub up via Subwoofer Out, put the sub "not too far from the TV" to avoid blatant localization problems, and be happy. You are asking all the right questions and could spend an enjoyable day playing with the different combinations but probably not worth it. Either way, find out if the receiver will send LF (LFE + stripped from center, surrounds) to the mains when you have no sub -- without that, don't even try.

If the crossover were higher than 120 Hz the approach you suggested would be more attractive.

EDIT - re: the QS4s, I wouldn't worry too much -- it's the tweeters on top and bottom that IMO have the most effect, and those will work fine even without a back wall. You could try hanging the QS4s from the ceiling behind you with FMBs or angling them a bit forward but personally I think the side wall position will still be best. Slightly above and behind you, right ?

re: any escape might... I was wondering if "powerwindow" was a Rush reference... but then again I live in Toronto so...