NEVER MIND, i'm going with a JBL GT5-15 instead

OK after doing more research on subs up to around the price of the VM Audio, it's looking like the JBL GT5-15 (at under $80 delivered) is an even better speaker for my application as, even though it will have a system Q of 1.154 in my 1.9 cubic foot box, THAT's exactly what JBL recommends with 1.75 cubic feet as a minimum and 2 as the maximum. either way, it's a lower Q than the VM, and after running the numbers, it would only have a slight resonance peak, but more importantly, it should have even MORE output at 20Hz than the VM combining their curves side by side. as an added bonus, it's a 4 ohm single coil which is perfect for the amp i'm using.

i'm NOT a fan of the logo on the dust cap or especially the exposed basket/gasket combo, but performanwise, it should destroy the MCM for both power handling and extension and maybe, with the higher Q, even snap a little tighter. anything else in the price range likely had a foam surround, or something else that turned me off like the skull logo of one brand. the hifonics brutus interested me a bit as i have already owned hifonics 12 inchers, but i couldn't find any thiele small parameters for them and passed.

the JBL gets good reviews at both amazon and sonicelectronix, and in theory, should be an easy re-sell when i upgrade my system both for the brand and its theoretical performance. someone should be happy to grab it for no more than $70 where beat up 12" JUNK that has silicone patches in recycled leaky boxes sells for more than that here and i intend to take care of mine.

Subwoofer Specifications
JBL GT5-15
Subwoofer Size 15"
Peak Power Handling 1200 watts
RMS Power Handling 300 watts
Voice Coil(s) Single
Impedance 4 ohms
Voice Coil Diameter 2"
Frequency Response 25 - 400 Hz
Sensitivity 92 dB
Xmax (millimeters) 14.5 mm
Woofer Composition Polypropylene
Woofer Surround Rubber
Magnet Structure Double Stacked
Minimum Sealed Box Volume 1.5 cubic feet
Maximum Sealed Box Volume 2.0 cubic feet
Top-Mount Depth 7-5/16"
Cutout Diameter 14"

Electromechanical Parameters
Free-Air Resonance (Fs) 27.30 Hz
Equivalent Compliance (Vas) 106.5 liters (3.76 cubic feet)
Total Speaker Q Value (Qts) 0.67
Electrical Q Value (Qes) 0.76
Mechanical Q Value (Qms) 5.70
Electrical Resistance of Voice Coil (Re) 3.63 ohms

Q in 1.9 cubic foot sealed 1.1564 @ 47Hz & F3 = 35.06

that's a nice curve that extends deeper than anything else i've run the numbers on. looks like i found a "winner"

PREVIEW does NOT WORK other than to re-position ONE uploaded photo! the system won't let me upload a second photo and insteads opens that annoying "no can do" page. i'm going to have to go into edit mode to add a pic of the driver. there's no way around that ANNOYING dysfunctional busted clunkiness.

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Follow Ups Full Thread

Topic - cheap 15" woofer rated to 50Hz with sealed Q of .72, or a high power one rated to 23Hz with a Q of 1.35? - thump 01:06:58 10/30/16 (23)

RE: cheap 15" woofer rated to 50Hz with sealed Q of .72, or a high power one rated to 23Hz with a Q of 1.35? - fantja 02:14:44 11/01/16 (0)

Friendly advice: Buy a kit (nt) - Presto 10:22:06 10/31/16 (3)

RE: Friendly advice: Buy a kit (nt) - thump 22:05:34 10/31/16 (2)

RE: Friendly advice: Buy a kit (nt) - Presto 17:52:19 11/01/16 (1)

RE: Friendly advice: Buy a kit (nt) - thump 01:20:31 11/04/16 (0)

NEVER MIND, i'm going with a JBL GT5-15 instead - thump 23:22:15 10/30/16 (1)

Hard to beleive the sens. - Scholl 14:19:40 11/05/16 (0)

Editing your Post - cawson@onetel.com 04:32:57 10/30/16 (7)

RE: Editing your Post - thump 12:01:34 10/30/16 (6)

There's a very useful function - E-Stat 17:51:50 10/30/16 (3)

RE: preview - thump 21:14:58 10/30/16 (2)

RE: preview - E-Stat 05:50:48 10/31/16 (1)

RE: preview - thump 21:46:53 10/31/16 (0)

RE: Editing your Post - cawson@onetel.com 16:58:23 10/30/16 (1)

RE: Editing your Post - thump 21:56:15 10/31/16 (0)

PART TWO of the post the asylum keeps deleting on me - thump 02:33:35 10/30/16 (3)

PART 3 (that should have been in part 1) the MCM curve - thump 03:05:17 10/30/16 (2)

PART 4, of what SHOULD HAVE BEEN 1 post!!! oh my effing god! it did it again!!! - thump 03:10:06 10/30/16 (1)

PART 5, if you like the VM option, what's the best wiring option? 1 @ 2 ohms? 2 @ 4 ohms? 1 @ 8 ohms? - thump 03:24:29 10/30/16 (0)

RE: cheap 15" woofer rated to 50Hz with sealed Q of .72, or a high power one rated to 23Hz with a Q of 1.35? - b.l.zeebub 01:16:57 10/30/16 (3)

RE: MCM - thump 01:44:10 10/30/16 (2)

RE: MCM - b.l.zeebub 09:03:00 10/30/16 (1)

RE: MCM - thump 12:27:07 10/30/16 (0)

Follow Ups

NEVER MIND, i'm going with a JBL GT5-15 instead - thump 23:22:15 10/30/16 (1)

Hard to beleive the sens. - Scholl 14:19:40 11/05/16 (0)

NEVER MIND, i'm going with a JBL GT5-15 instead

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