dual Kilomax 18A horn pics and olans

What one looks for is motor strength which is BL/sqrt(Re) which puts the LAB in a different perspective because its a 4 ohm driver

DC Resistance (Re) 4.29

Which makes it more of a 6 Ohm nominal driver. Also compared to an 18" in a horn (which has similar Sd as 2x12) it again changes the perspective as there are two motors driving that same Sd.

logsquared wrote: BL has more of a factor at upper bass freq.    for true subwoofer operation the kilomax ain't to bad.

I agree. This is why I mentioned your box being the exception to the rule. The Horn's length makes up the difference as if it was sitting in a large box.

i had bought like 8 or 10 kilos when they firs came out with intentions of making 2X18 boxes..  made a few different reflex boxes.  hated the output of all of them.  i need high eff and low bass.  i liked the sound of my turbo tms3 bass section.  at that point i started to look at horns.  i had the kilos so i started there.

I understand where you stand now.

i did try using the aura 1808  (seismic at that time) after seeing that the similar bassmax subs used them.  they sucked big time.  hell, they suck in any box.  tried an EV 15dx.  the ev sounded good but over excersion would kill it at low freq.  so i stuck with the kilos for many yaers.  about a year ago i built the new dual 18 version seen here.

The Auras TS Parameters have changed throughout the years. I must have around 4 different Parameters from that driver when theu were being transfered from company to company.

It's ashame you didn't try the McCauley 6174. They offer a larger xmax, lower fs, over the Kilomax 18. And around a 0.34 QTS.

I heard them in Bassmaxx's B Two and they go much lower
than the Auras sitting in the B Zeros.

Nevertheless. You are happy with the sound, and that's all that matters.

Best Regards,

Edited by Elliot Thompson - 21 February 2007 at 4:47am

As a matter of fact, I do.

www.pbellsound.com

He's the same gentlemen that hosted the Subwoofer Shootout of 2007, and, 2003.

Best Regards,

I've always had the impression Kilomax are sh*te. Seems like they perform really well in that cab.

the plans and graphs died with my old hard drive.  was part of the inspiration to design new ones.  the new subs have the same horn expansion but with a different fold.  also, i moved the drivers a few inches further up the horn.  the distance from the drivers to the throat is still less than 1/4 wavelentgh of the upper most freq needed.  the response is almost identical just 3db lower.  i don't know why but the new boxes seem to sound better from 90-120hz.