Hey guys,

Did some simple testing recently with a single Xplod XSL1255G woofer and a 2150SX amplifier. I used a Laser as the test vehicle, and tried a small sealed and then a larger ported enclosure.

With a 3.0 cubic foot box and a single 4" port 6" long ( about 35hz tuning ) it made 137.8 dB.

Optimum tuning would be higher than that, and I think more port area would help too. I'm pretty confident there wouldn't be too much problem getting over 140 with the single 12"

I think this is a good indicator of what SPL's will be needed to win the TV in single woofer, and the box specs above are a decent start..

Craig H.

ps. look for the full story in AutoSalon magazine.

I did 141.3db with the cheaper xls1235 12" sub, but that was off my 1kw Alpine amp. I reckon with the Sony I would still get a decent score though, will test it soon. And this is in my lancer sedan.

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2001 Lancer GLXi
* HU: Sony XRC450 + CDX636 10 stack cd
* Front: Clarion SRS1623
* Rear: Sony XS7694 6x9's
* Subs: Sony XSL1235 in ported box 2.5cf @ 38hz
* Front amp: Sony 1502SX
* Sub amp: Alpine MRV1507
* Loudest to date: 141.3 db

lancerman, are you going down to compete? if not if you lend me your amp and sub i'll think about the trip down...

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2002 Holden Astra
HU: Blaupunkt Miami Beach
Front Stage: Orion XTR 6.2
Front Amp: PPI 2360 2x90
Subs: 2 x Audiobahn 1200Q
Sub Amp: JBL 1200.1
PB: 150.3db at BAS

Ripped, I am still not sure. Most likely not, cause I will be working full time during that period. We can stick the gear in your car at test & tune and see what we get, and we will go from there.

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2001 Lancer GLXi
* HU: Sony XRC450 + CDX636 10 stack cd
* Front: Clarion SRS1623
* Rear: Sony XS7694 6x9's
* Subs: Sony XSL1235 in ported box 2.5cf @ 38hz
* Front amp: Sony 1502SX
* Sub amp: Alpine MRV1507
* Loudest to date: 141.3 db