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Stereo Integrity HT 18" and Image Dynamics IDMax 15"

post #1 of 11
Thread Starter 
I was leaning toward a Stereo Integrity HT 18" but then came across the new IDMax 15".

Image Dynamics IDMax was always touted as a very accurate and yet very capable high output sub.

Here some specs for both drivers

Stereo Integrity HT 18"
http://stereointegrity.com/index.php?id=60

and the IDMax 15"
http://www.imagedynamicsusa.net/files/70538026.pdf


My concern is output vs. accuracy. Will the IDMax dig down as low as the 18". It does have 44mm of Xmax which is pretty beast.
I'm almost postive the SI 18" wont touch the Max in accuracy but it's less than half the price.

I wanna stay sealed and was looking at the SI 18" in a 4 cube enclosure powered by a Crown XLS2000.

I'm thinking around the same for the 15" but not sure.

Any thoughts would be appreciated.
post #2 of 11
subwoofers don't "dig as low".

every bass driver can produce every bass frequency. the question is how efficiently and how loud.

the image dynamics parameters look more like an infinite baffle type driver and the xmax is more than likely 1/2 of what is specified.

xmax is the linear range and i kind of doubt that driver is linear across 3.5" of total distance. that would be spectacular.

if accuracy is what you are looking for, go back to the Dayton ho. :-)
post #3 of 11
post #4 of 11
the marty sub will absolutely crush a sealed sub with the same driver, but the si 18" in 4 cubes would work well for you too. just 10db less output and will need some equalization. how much depends on your room and its gain.
post #5 of 11
Thread Starter 
I know this is DIY and as sad as it sounds I'm not quite sure I trust my wood working skills on a ported box build. Especially like the tall boy you suggested me with a recessed cut out and that long port.
I just know I would mess something up. I prefer the simplicity and less imposing size of sealed.
post #6 of 11
no worries. there is actually another guy in the exact same boat who was hoping that erich would kick out a ported flat pack. no word on that though, so he is going to have a cabinet maker take a look at a simplified version of the marty so that he can get the big performance while not being a woodworker himself. i'll go dig up the link/design.
post #7 of 11
this is the design:

http://www.avsforum.com/t/1494429/help-with-speaker-subwoofer-design/30#post_23831483

and even though it is in 316's thread, it was another guy who was actually going to use and potentially build this one.

maybe a cabinet guy could do the cuts and you could glue it up and finish it like a flat pack.

the cost of having a local guy do the cuts might even be less than the shipping would be for a flat pack.

I didn't actually work up a cut sheet or a specific bracing plan for that one.
post #8 of 11
Thread Starter 
LTD you have been nothing but helpful to me with all my crazy flip flopping every day on what to build.
Much appreciated brother!! biggrin.gif
post #9 of 11
Quote:
Originally Posted by TenTonBass View Post

LTD you have been nothing but helpful to me with all my crazy flip flopping every day on what to build.
Much appreciated brother!! biggrin.gif

+1 A downright go-to Ninja helper imo.
post #10 of 11
kind words guys...thanks.
post #11 of 11
Quote:
Originally Posted by steve nn View Post

+1 A downright go-to Ninja helper imo.

Couldn't agree more!!! LTD is perhaps the most actively helpful guy on these forums. Glad he's here. Oh, and I am that "guy" he was referring to a few posts back. Just been communicating through PM.

atabea
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