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Thoughts about smaller cone but bigger motor vs bigger cone and smaller motor


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Ok sorry ahead of time if i get long winded here lol. Ive been going back and forth on my next build for a damn year now and heres where im a bit stuck. I either want to do a single DC 15" on a dc 2k or a single 12" dc lvl 5 on 2 dc 2ks strapped. Id want to do the xl because i loved my old xl 15 and know what box size works and fits in my trunk. However ive been thinking the lvl 5 12 to try something dif than before. I would also have more space taking that route to build a beefier and more efficiant box but wouldnt have to cone area of the 15. So wonderin what yall think and why. What benifits other then what i already know should i consider. They are both beasts in my book and know id be happy either way but either setup is alot dif from eachother. Ok im done blabbin lol

Edited by cracker
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more cone means less excursion to for the same output and also gives the ability to go lower frequency wise before running out of excursion, assuming each uses a similar coil/motor setup that can attain the same excursion levels. 15mm xmax 15" vs 25mm xmax 12" would be a toss-up for example.

Motor all depends on the design of the motor and the coil. Could be a tight gap or a loose gap, not to mention depth, back-plate design, pole design (solid vs ported), and top plate design..

Tons of things to consider.

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^^^ :good:

Like was mentioned above, there are MANY factors that play into this but on the theoretical note:

Doubling power = +3dB

Doubling cone area = +3dB

You're not quite doubling the cone area by going from 12" to 15" but you might be close with either solution.

Again theoretically +10dB is considered to be perceived as being twice as loud. This requires increasing power by 10x...

:shrug:

I say do what makes you happy and go with it.

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The old saying goes,

"There's no replacement for displacement"

www.phoenixphorum.com

Setup

HU: Eclipse AVN6620

Amp: Audison LRx5.1k

Mids: 6 1/2" Silver Flute's

Tweets: Clarion SSS601

No rears

Subs: (2) TREO SSi12.22's

Processing: Audio Control DQS, Phoenix Gold BassCube

Clarion Collector

HEAD UNITS:

7770 w/920EQ w/2nd 920EQ display

ADCS-1 w/CDC605

5780CD

DRX9375r w/DPH9300

DRX9575Rz w/DPH7500z* (*1 of2)

DRX9675z (2X)

AutoPC 310

HX-D10 w/DPH910

DXZ615 w/DPH7500z* (*2 of 2)

CDC655

DRX8275 w/DPH9100

DRX7475

5632CD

AMPS:

A007-w

1800A

A1200

A500

APA4200

APA4320

APX400.4M

SPEAKERS:

SSS601 (2X)

SRC4650

SRC5752

SEC571

SEW5107

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Ok so what im gettin is i could prob get close to the same output and or sound either choice, just depends on what space i want to give up for build or equipment? I thought about the level 5 15 too trust me lol but considerin i cant give up the whole trunk and would need more amps and batt with any size level 5 over the xl id go with the 12 there. Hmm, thinkin keeps on goin lol. I plan to start buyin equipment after the new year so theres still time to decide. Anybody ever hear the 2 dif subs in person by chance? The xl 15 and level 5 12. Im thinkin with the monster motor force of the level 5 it just has to be a mean lil shit. Ive had the level 4 15 and xl 15 to compare and damn the xl just was on another level ha

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Ok so what im gettin is i could prob get close to the same output and or sound either choice, just depends on what space i want to give up for build or equipment? I thought about the level 5 15 too trust me lol but considerin i cant give up the whole trunk and would need more amps and batt with any size level 5 over the xl id go with the 12 there. Hmm, thinkin keeps on goin lol. I plan to start buyin equipment after the new year so theres still time to decide. Anybody ever hear the 2 dif subs in person by chance? The xl 15 and level 5 12. Im thinkin with the monster motor force of the level 5 it just has to be a mean lil shit. Ive had the level 4 15 and xl 15 to compare and damn the xl just was on another level ha

I've owned xl 15's and a 5 12. The single level 5 got down on a 3.5k, hit lows and got loud. And that was in a less than ideal enclosure.

When I had two xl 15's(on a Stetsom 7k), it was way louder, they were in an ideal enclosure though and there were two of them. The xl's do sound a little 'cleaner', don't want to say more sq, but they are smoother.

XL 15 on 3.5k is my vote.

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Ok i hear ya orionstang. With the amp choice id do the 2ks out of price to the 7.5k and will most likely pickup one of them before making a final decision on sub. One thing i should also add is the enclosure i could build for the xl 15 would lack a few things due to size. I couldnt add 45s to the corners and not much bracing at all, single layer everywhere but the front where i could double it. With the level 5 12 id have room to double layer all around, add bracing and 45s in the corners. Id also have more room for more port. Im not out for sq i just want it to hit hard n get pretty damn low. Thanks for the responses and i will def be considering everything thats been said

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