138.6dB -

I guess that's cool...I've got 2 12"s


gsumax with one 10" hit 139dB

mb1 with 2 15"s hit 145dB

 

post it in audio, im sure more ppl will understand and care then thats decent for a pair of he2's

 

2 12's in a generic box... thats a very good number. Get a custom box in there that's built to spec, and you can watch those numbers rise.

 

I dont need a "custom box" --- my box IS custom. I can seal it and vent it whenever I want. 8 lil screws...and some foam padding.

 

This is with the box vented. I tested with it sealed.

 

Yeah I am surprised to you hit that with a prefab box. What kind of mic did they use? Where was it mounted? I think I gonna get my car metered this summer.

 

It was this plastic enima lookin thing...he just held it close to the windshield

 

You use the same box for your sealed enclosure as well as for your vented enclosure...lol. What is your tuning frequency of it vented? I highly doubt that box is "sealed" by just 8 screws and foam padding. Your subs use the same net internal volume for both sealed and vented applications?

Sorry man, just doesn't seem custom to me. Seems like its one of these pre-fab generic wonders. Did you build it your self to spec, or was this bought off the shelf?

 

Almost every single subwoofer I've ever come across, requires SIGNIFICANTLY greater volume when ported than sealed to operate efficiently as the subwoofer was designed. I highly doubt that your box is anywhere near properly tuned for either if it was designed to have removable seals for the port. Do you realize how much stiffness is required to extract good numbers out of a box?

 

I'm sure your spl would have been higher if you tested it as a ported configuration. It's really all about the enclosure design.

 

Yeah it woulda been higher if it were vented.

KingRukus....I dont mean it's custom as in I made it. It's better than other normal boxes.

 

how much wattage you feeding them?

 

yeah whats your exact setup and what mic did they use? and also what was the 1 10" the other guy had?

 

i think i remember seeing that gsumax having one 10 jl w7. Anyways bijan, how many watts are you giving them each?

 

Not a bad score man, and as I always seem to do I dont want to rain on any1's parade but it seems like you had a db happy mic
The last Usaci meet I went to they had a new mic that measured the pressure level & every1 was hitting 5-10db lower then normal. Hell even guys that were hitting 150+db were now hitting low 140's.
Setups that we know for a fact are capable of hitting mid 140's were barley breaking mid 130's
Needless to say every1 upset

I was so turned off by it, I didnt even test mine.

 

I hear the new mics are really hard on the scores. Oh well.

 

This box is not custom at all


A good "Custom box" is build to fit your subs according to the manufacturers spec, it is also made to fit your car.

Our local Best Buy sells these boxes for dirt-cheap

 

BIG understatment. 5-10db is a huge difference. Think about it this way, every 6db is 2x louder to the ear. Thats a drastic drop on a mic.

 

Hate to say it, but it was DB happy.....No way you can hit that , with that setup. I have seen Jettas and others with no back seats, and multiple subs hit that ......and my system can rock at that level.....I agree with Hitman .

 

Yeah, YOUR best buy. The box I have is perfect for what I need. I dont fockin enter sound competitions to get the highest. I dunno why you people are making seem like it.

138.6 in a sealed box isnt too bad, gsumax has 1 JL w7 in a vented box NOT SPECIFIED FOR A w7...and he hit 139. Probalby BECAUSE it's a vented box and he folded his rear seat down.

 

so what amp/sub combo do u have bijan?

 

still sort of new to this spl thing, do they just play a test tone and measure? or they play some bass heavy songs?

 

Gordo...you can play whatever song you want. It's a real skinny microphone that has a wire running to a "brain" where it reads the dBs.

SlickRick...I'll take pics soon.

 

If your trying to get loud, go with a ported box tuned high. Somewere in the area of 55hz. Its basically only good for playing one note REALLY loud. Songe you can play, but if your serious about SPL you just run a test tone. If you dont know what note to play, they just give you a CD that gradually sweeps.

 

hitman, i played late night tip in my car and ive never seen my subs move so weird. the bass is very nice. the low note in that song hits better on my 10's than my buddies 12's.

 

That song has a wicked low end, it doesnt hit hard or anything but it shakes you & your ride down to the core I love to use that song to sneak up on people, starts off all calm with soft highs, then comes a 30hz note that peaks for 4-5sec It can get pretty painful though

 

how do you know it hits 30hz? id lke to know what songs hit what hz too. im not saying you dont know, just wonder how you do know.

 

Actually I belive it dips a bit lower, 28hz at some points but I dont recall it going much lower. There is a comp program, I "think" its called Goldwave (I have like 10+ sound programs on my comp) and it can actually read how low it dips. If its not Goldwave, then I apologize but one of the programs can read it.

Another way is by seeing multiple people post about it