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2x12", or 1x15" - Which is best for MAX SPL?

Old 05-18-2011, 07:54 PM
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2x12", or 1x15" - Which is best for MAX SPL?

I've got a dillema. I'm building a big box, and I can put either 2 x 12" subs, or 1 x 15" sub in it, but not both as I would like. I want to make the maximum SPL. The box will be ported, obviously. I'm driving it with a class D amp which is rated at 1500 watts x 1 @ 14.4v, 1185 watts x 1 @ 12.5v. Either way, my 15" sub is an oldschool Cerwin Vega Stroker 15" dual voice coil which will be setup in parallel for 2 ohm load. My 2 x 12"'s are also oldschool JBL GTi1200 1000watt (600rms) 4 ohm, which will also be wired to 2 ohm load.. I'm using 1/0 gauge for power with multiple batteries and caps, but it's not relevent. The 15" put's out a bigger sine wave, however the 2x12"'s would have a larger surface area, but slightly smaller sine wave.. I just dunno which one would be best for max SPL? I'm leaning towards the 2x12"'s..

So which is better? 2x12", or 1x15"??
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Old 05-18-2011, 09:28 PM
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why not build 2 boxes and see which one is louder.....
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Old 05-18-2011, 10:36 PM
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2 12's.
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Old 05-23-2011, 08:13 PM
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What do you mean a bigger sine wave?
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Old 05-23-2011, 09:13 PM
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If you are going strictly SPL, 2 12's
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Old 05-23-2011, 10:25 PM
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go with the pair of 12's
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Old 05-24-2011, 12:14 AM
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i think the stroker would be louder than the gti s
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Old 07-23-2011, 07:57 PM
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there is no replacement for displacement
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Old 08-22-2011, 06:36 PM
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Spl wise, go with the pair of 12"s
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Old 08-23-2011, 01:55 PM
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from personal expierience, 2 12 with less power... louder then 1 15 with more power.
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