subwoofer box

[americanaki]

hey guys i have an eminence bp102 jst lieing around and i want to make a car sub out of it. this is possible right? and also what would be the best box to put it in to get the loudest bass?? cheers

 

[Moondog55]

If you can provide a link to the driver data it makes the job easier.

My understanding is that most PRO drivers make relatively poor sub-woofers for home use

 

[Cal Weldon]

That's bass guitar speaker. I wouldn't think it would make much of a subwoofer even if you are planning to use it in a car.

 

[Richard Ellis]

It may indeed work out OK....Heres' the Thiele Smalls.
fs=35Hz
Qes=.47
Qms=5.36
Qts=.43
Xmax=6.2mm
EBP=75
Sens. 92Db
...40-2K Hz.
____________________Quick, who can crunch the numbers the fastest. The EBP puts it in the ported camp, but that Mechanical at 5.36??
________________________________________________Rick.....

 

[Cal Weldon]

Low Xmax, high Fs and 33 gram cone. Not your average subwoofer.

 

[Richard Ellis]

But then again isn't this right up the Car Audio alley??
Ya know...Bonk, Bonk, bonk.......??
___________________________________________Rick.......

 

[americanaki]

hey guys so if i want some nicve tight bass outa this with a mad thud which is going to slap who evers sitting in the back seat on the back and go extremley loud what am i loocking at? a ported or sealed? cheers.

 

[MJL21193]

50 litre vented will give good response down to ~40Hz but not much power handling.

 

[americanaki]

ok i knwo im going to fustrate people by this but what does that mean.. i understand down to 40 hurtz dats sweet but power handling?.. soz for being a noobie.

 

[MJL21193]

The amount of power from the amp it takes to drive the speaker to it's linear limits (Xmax). In this case, about 80 watts.

 

[americanaki]

so i can give this thing more than 80 whats of power?? :S

 

[Cal Weldon]

I think the volume will be fine but it won't pound like some of the cars you're used to hearing and the distortion will be quite high. The lightweight cone tends to deform, which is a desirable thing for guitar speakers. They call it character. Not so in a dedicated bass driver.

 

[americanaki]

mm lol iight.. so definatley go vented not sealed??

 

[Cal Weldon]

Posted at the same time. Yes, you can but the driver will begin to bottom out, making a heck of a racket before it gives up the ghost. 80 watts on that driver will be more than loud enough in a car but it's still not right for what I think you want.

 

[americanaki]

ye i know its not what i want.. i want a digitals designs 12 .. which i will eventualy get.. btu since i go thsi lieing around n i love building stuff i thought id put it in a car. um so what box should i make that be best.. like size n port size etc.. been trying to use winisd.. but when i put in t&s specs it says cant convert floating point?? n also if i cna get it working what frequencies should i be looking at getiing the loudest etc? only seventeen and only getting into all this spl stuff last few days.. cheers!

 

[Cal Weldon]

What car? The smaller it is, the higher you can tune it.

I don't have winisd so I can't comment.

 

[americanaki]

little toyota corola hatch back

 

[MJL21193]

50 litre box, port = 10cm inside diameter, 22cm long. About 110db at 50Hz with 80 watts of power.