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Just wondering what everybody's spl was who have gotten theirs tested and what kind of setup do you have? I'm pushing 142.8 dB with my two 12s and two 300 watt amps in a sealed box..
Another question, I know having a ported box would raise my spl a little bit but I'll lose some SQ out of it but I'll sacrifice.. how much of an spl do you gain? Does anybody know?

 
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You can gain up to 9db's with a ported enclosure, but most likely 3db's on average. Pretty impressive score...My 12W3 with a JL 500/1 didn't even come close to that in which we should be the same due to my cabin gain.

 
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Was this at a local competition..if so under which rules?.. a 142.2 with 600 watts in sealed setup is almost too impressive to be truth. Current;y with my single 15" Eclipse alum and Arc 2100CXL (400wrms) I'm hitting a 133..with my older setup of 2 Audiomobile EVO-R12's and a Micro Dimension u 1k.1 amp (1400wrms) in a 7.5 cu.ft vented enclosure tuned to 48hz for SPL I managed a 151.2 on a Linear X PC mic under DB Drag SS1-2 NW rules..

 
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For your question regarding porting..you can gain up to 9db's or so if your enclosure is large enough..and has enough port area and is tuned above 40hz..but the gain will only be within your tuning frquency +/- 3dbs..basically a big spike...and anything below your port tuning frquency will be pretty much muddy noise.

By tuning very low..like 28hz.. you'll have a 3 decibel gain flat through your frequency rresponse..

I'd reccomend download WinISD from team linear..(google..search for Win ISD) it's an enclosure modelling program for frequency responses..you can play around with it and see how porting..port tuning and enclosure sizes affect a subs response

 
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With my old setup with 2 PPI C2 12's and a PC1800 (800 watts) in a sealed box I hit a 146.3 . With last years setup with 1 15" Execution Sub in a ported box and a PPI PCX1500 (1000 watts) I hit a 149.7. I agree with mohawk tho, porting is definatly the way to go for spl. I gained 4 db when porting the 15. Unfortunatly the current stero in my car blows and I'm lucky to hit a 136, but that will be fixed in the spring.

 
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Im hitting 145 db at least without any adjustment to my system! I have 1 15" Alpine Type R sub (Dual Voice Coil) and 2 MRD-M500's Alpine Mono Block Amps (one to each voice coil). I pretty put them in turned it on and tested. now I can probably hit alot louder but I havent tested.[IMG]i/expressions/face-icon-small-cool.gif[/IMG]

 
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This was at a local competition... I dontk now what "class" (if you wanna call them that) of rules they were under... It was just that you had to play their cd, windows up, and do any changes to the amps and your cd player that you wanted before you did your two runs... I'll scan in my score sheet for those of you who are doubtful lol

 
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probably stock 150-300

i hit 134.0 with an eclipse alum 12 and memphis 500d (500watts) sealed

 
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Okay an open class...I guarantee you if you were tested with a calibrated Linear X or Term pro mic you'd hit alot lower [IMG]i/expressions/face-icon-small-smile.gif[/IMG]....at a local comp with my old setup I hit a 157.2 but I don't count it because the mic was way way off

 
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I had two JL Audio 12-WO's in a sealed box with a kicker ZR240 amp in a '97 civic coupe, the highest I ever scored was 136.7db.

 
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Considering I have owned a type-r as well, this is another one I would have to see to believe. You will be suprised how far off your ears are compared to a mic...

 
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Your outdoing me by 1 DB.... smaller sub...less sound deadening realistically about 200 watts more power...hmmm the eclipse alum need alot of power to move.. but man do they sound sweeet

 
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awww and poor lil me with just one old stinky sub....
DD9977
$1 to the first person to say what it is AND why it rulez all other subs

 
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dd 9977? you must mean the 9917
17 inch sub by Digital design... does it rule all subs? i dunno man... but i did tell you what it is, where the hell is my dollar punk

 
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oops yea you're right 9917 9977 was my old phone #..my bad[IMG]i/expressions/laugh2.gif[/IMG], and it rules all cuz of this

 
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two things:
1 - that nevers tells me why you think its the best... its just a bunch of specs

and

2 - wheres my dollar dammit

 
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Yeah, i think someone owes a dollar
[IMG]i/expressions/face-icon-small-tongue.gif[/IMG]

 
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144.2 Db, I have two 12W3v2's (was tested with original W3's) with a JL 500/1....but I just added another 500/1 so we'll have to see what happens now when I get it tested....was stock class 301-600 watts, USAC. I won 1st place....the 2nd place guys was at like 136 or so....Mad props to AudioLink in Manchester, NH for tunning my system the first time around!

 
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ported..or sealed?

 
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sealed, custom box, exactly 1 cubic ft. of airspace per driver, the box was placed in the middle of my trunk, facing tailgate, back seats folded down. Mic. was placed by the front passenger kick panel, both doors open.