Anyone have Bookshelf speakers mounted over top of their subs??


Like the title says, I was wondering if many have done this to get a true stereo sound with dual subs, and bookshelf speakers?  My current set up is SVS ultra bookshelves, and 1 SVS sb2000 for now, adding another sub soon. I would like to build speaker stands to where the subs slide under the bookshelf speakers, and I haven't seen it done anywhere, just wondering if it is an idea worth pursuit?
musicjones
GIK is a great manufacturer, you are lucky to have them nearby.

Bass traps remove the inevitability of nulls. :)

You'll need EQ, but traps + EQ can really do wonders.

I recommend you use a descending target curve, about 1-1.3dB/octave.

Best,

E
There are several professional acoustic articles about this, but yes, you get rid of nulls by using bass traps first, and then EQ becomes possible. The other way around, not so much.

Thank you all for your Input, it looks like my next step is going to definitely be build some bass traps. I have the material to build some 3" thick ones and I am only able to build them about 3' tall due to other things in my living Room that cannot be moved .  I plan on ordering some fabric from Gulliford of Maine to wrap my bass traps in , I think it is probably wise to let my girlfriend to use the color . She has agreed to let me hang acoustic panels on the walls, as long as they are art panels, like the ones offered by Audimute( one of those already ordered) 
Erik, I am not up to speed on my octaves and curves yet , and I am pretty much a novice at home audio. I am very anxious to learn all of the required terminology and technical ability to make what I have sound as good as it can. 

@musicjones - take a really good look at the Owens 703 FRK.  I have used this extensively as well as the Roxul Rockboard 80.  You may end up having better bass absorption with the FRK due to the foil membrane (and it will not absorb the upper mids/highs as much).  You could probably layer a 2" 703 FRK with a 1"/2" standard 703 to get a 3-4" panel.

If you really want an effective bass trap, look at the GIK Monster Bass Trap with the FlexRange Limitor.  This costs money, but the membrane panel does an excellent job of capturing 60-80 hz and also does not absorb the high frequencies (which can suck the life out of a room).

In terms of eliminating room effects, theory would say that asymmetric placement of two (or more) subs would have a better chance of being successful.  In practice, your patience, set-up skills, and EQ-ability would also be very important.