OT: SI BM MKIII SPL Fun ! =)

[sundownz 197]

Off Topic -- but it's my section

Random pre-fab sealed box screwed down on top of my SPL box creating a 4th order band-pass *laughs*

First Try :

Second Try :

Adding some duct tape as it was leaking air BAD:

Little bit of power on tap :

First score with duct tape added :

Last burst and best score :

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For those that don't know... this is a BM MKIII - it is a 3.5" deep SQ Woofer :

We got 136.3 from it in the regular sealed box by itself.

SPL figures taken sealed at the dash dB Drag style

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Little more about the woofer :

10" diameter nomex spider (yes 10" spider)

2.5" coil on aluminum former with spiral cut

8-layer copper round wire (true 8 layer)

Multi-Magnet Neo Radial Motor

XBL^2 gap topology

Shorting ring for further inductance reduction

14mm linear x-max one way, Klippel tested

Designed as a reference quality SQ driver that happens to be shallow -- not just a shallow driver that happens to sound good.

I just thought it would be fun to see what this little guy could do -- expect more testing soon!

[sundownz 197]

Nick @ SI is a friend of mine -- if you are wondering why I am testing his products. We have a little bet going... I plan to do a 150 with a pair of these and he doesn't believe me... YET.

[Gary F. 3]

Jacob, you should send me 2 of them to put in the van. I know it will do over a 150.

[CrazyKenKid 64]

hey don't these sub have a neo magnet in them?

[sundownz 197]

hey don't these sub have a neo magnet in them?

Yes, they do.

[jcarter1885 995]

What do you win for the bet and lose for the bet if you dont mind sharing. Good luck with the bet

[REVpuggie 23]

on how much power are you planning to achieve this , and how much cabingain does your car have ... , looking at my calculations this should be very possible .

[jfin1204 2]

i have a 12" woofer that look exactly like that, it's a power acoustic with a aluminum finish cone. the cone is smaller and the surround is alittle taller and fatter. probably not nearly as good as this BM MK3. i love my M v3 with the claw basket. hit every note i throuh at it.

[king alpha 0]

Is this off of 500 Watts?

Also nice to see some stuff from Stereo Integrity. I run a Mag V3 with a SAE-1000D. I should be getting my SAE-1200D in by the end of the week and the SAE-1000D should work perfectly with one or two of those BMs.

BTW, CrazyKenKid, we should continue bugging Nick to tell us what company he's building the Mag V3 clones for. Maybe Jake knows..........

Edited February 25, 2010 by king alpha

[Julian 641]

ooh.

sexy box

woofer=sexier though

[CrazyKenKid 64]

Is this off of 500 Watts?

Also nice to see some stuff from Stereo Integrity. I run a Mag V3 with a SAE-1000D. I should be getting my SAE-1200D in by the end of the week and the SAE-1000D should work perfectly with one or two of those BMs.

BTW, CrazyKenKid, we should continue bugging Nick to tell us what company he's building the Mag V3 clones for. Maybe Jake knows..........

lmao i completely forgot about that lol!!! time to hound Nick about them again lol!! and if they are as he promissed watch out jacob from some compition loL!

[sundownz 197]

on how much power are you planning to achieve this , and how much cabingain does your car have ... , looking at my calculations this should be very possible .

2500 watts total is the plan

Was able to do 150 dB with two 8s and 3400 watts so I think it's not going to be an issue.

[sundownz 197]

Pics of the loudest box position (we tried like 20 ways) and the score :

Video Uploading now...

[sundownz 197]

[sundownz 197]

We broke 148 with two last night... will post pictures later whenever I go back to the shop.

Will keep working on the 150.

[sundownz 197]

First we made a REALLY small ported box... but the tuning was too high and extended the port messed up the phase relationship...

Not much better than the single woofer at it's best so we quit on this box.

So... we modified one of my dual 8" woofer boxes to hold two 12s -- about 75% larger than the first :

I forgot to take pictures yesterday... the port did have a flare on the end. MUCH shorter port.

This is what we got :

[emh9009 199]

gettin' here. what do you have planned to get that last couple dbs?

[CrazyKenKid 64]

wow that is awesome nearly 150db with 2 of those subs lol! how much power did you toss at those 2 subs? 3000rms total yet?

[john denver 1]

i think you need to clean up that shop a little

[The enD 467]

I watched the vid where Jake admits he lost the bet.

I don't know if I am supposed to post the vid. He will.. maybe

[Duran 387]

I know Jacob can get more numbers there! I haven't given up!

[sundownz 197]

I watched the vid where Jake admits he lost the bet.

I don't know if I am supposed to post the vid. He will.. maybe

I'm not done testing yet ! So the video is not ready yet.

I will be doing more next week.

[The enD 467]

Sean uploaded some vid with you saying your p... yeah

[sundownz 197]

Sean uploaded some vid with you saying your p... yeah

Haha, I know -- beer + speaker testing.

We'll get a better video when I'm done.