2 15's too much?

[Fast1one 10+ year member]

Run them IB //content.invisioncic.com/y282845/emoticons/naughty.gif.94359f346c0f1259df8038d60b41863e.gif

 

[95BlackGA 5,000+ posts]

Run them IB //content.invisioncic.com/y282845/emoticons/naughty.gif.94359f346c0f1259df8038d60b41863e.gif

I was actually looking at some IB setups, and was thinking of that as a possibility, but don't know have to know certain parts of the TS parameters to determine whether or not they would sound decent in an IB setup?

 

[Fast1one 10+ year member]

I was actually looking at some IB setups, and was thinking of that as a possibility, but don't know have to know certain parts of the TS parameters to determine whether or not they would sound decent in an IB setup?

Not really, there are ways to mess with the woofer to get the response you want //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
For example, generally with woofers in IB or dipole configuration, you want a relatively high total Q (most of the time, depends on your taste) to achieve a more steady roll off instead of the response just dropping like a brick...you also gain some "punchiness", though too high of a Q will make the woofer sound a little muddy or loose...

Adding a resistor in series with the woofer will raise the QES, and therefore raise the system total Q (QTS)...

Best thing to do is to order a bunch of .27ohm (I think thats the lowest they have in the 20 watt versions in parts express) and play around with different values until you get something that sounds good...thats what I would do atleast, wood for a manifold is cheap, plus if you already have a hole in the ceiling, you have nothing to lose //content.invisioncic.com/y282845/emoticons/cool.gif.3bcaf8f141236c00f8044d07150e34f7.gif

Edit: BTW here is an example of the above:

Say we have a speaker system with Q(tco) = 0.707 and DC resistance Re = 6.5 Ohms.We add 0.25 Ohms of series resistance by way of our amp, speaker cable and crossover.

The net Q of the speaker then becomes:

Q(tc) = 0.707 ( (6.5 + .25) / 6.5 ) = .707 (6.75/6.5) = .734

Found here: http://www.trueaudio.com/post_013.htm

Its talking about damping factor, but its the first example I found of series resistance...

 

[kmanian 5,000+ posts]

I am presently doing a screening room for a client that has 5 highend 15" subs in a room that measures 16x20. So go ahead and do it.