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post #10291 of 10292 Old Today, 11:59 AM
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I just received three of these and they look awesome, packaged well, no complaints. I'll be going through the tedium of setting up, REW, time aligning, Dirac Live, etc. this Saturday.

Here's the deal though. I have L Shaped room.

Two Masters and one slave.

Right now I have one HSU sub by TV that you cant see in the picture. But you can imagine where it's at. Its directly across from MLP which is left side of couch in picture.

Then second hsu sub is all the way on the back right corner of room as you are looking at picture, where there is book case.

There are no dips, everything is great. (after rew). So two subs are working great.

My idea was to add third sub directly behind MLP (which again is on left side of couch as you are looking at picture). So that's why I updgraded to these.

But since I have to run master/slave combo on that back wall: The nearfield sub behind MLP -and the one about 10 feet away in back corner - they will on same DELAY. ** Do you think this will cause problems?? Nearfield sub sound will get to me quicker than the one that is 10 feet away... you can't have separate delays on master/slave.

Question simplified - how screwy will it be to have a master/slave where one is nearfield and one is 10+ feet away? Keeping in mind they both have to be on exact same delay.
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post #10292 of 10292 Unread Today, 12:31 PM
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Originally Posted by DaveyMac View Post
Question simplified - how screwy will it be to have a master/slave where one is nearfield and one is 10+ feet away? Keeping in mind they both have to be on exact same delay.
I believe Mark has commented on this in the past as I'm dealing with a similar issue in my room. Sometimes, time-aligning subs works perfectly and other times not. The only way to know for sure is to measure with REW or some other similar means. Just because subs are equidistant from MLP doesn't mean an individual delay couldn't improve the response. Likewise, just because they're not equidistant doesn't mean they need separate delays.

I just went through an exercise in my room where XT32 set my larger 18" subs upfront to 14.7' and a 12" sub directly behind MLP to 5.5'. Guess which FR looked best when I measured the combined response...ironically, the one with no delay between them and guess which looked the worst...well, see for yourself:

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Last edited by jkasanic; Today at 12:36 PM.
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