Audiobahnn AW1200Q Subwoofer
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by guitarexpert89
Start New Question Here -- Back to Tree
Year Make Model: 2000 buick century custom

ey wuts up man ?, i had a question and i'll be really happy if u could help me out. i have two audiobahnn aw1200Q in a home made box. the boxes depth and width is 32"in, and it's height is 15". it's two chanber, with a 3"w x 6"L tube as the port. is this about the size the box should be or is it a good size? oh and one more thing should i use a bigger and longer tube as the port?

well thanks man

Page Views: 211
Reply Posted: 04/2/2009 23:45:43 by: guitarexpert89

Reply Posted: 04/3/2009 03:18:22 by: Sponsor of ClubKnowledge! swez Old Man Audio

Welcome to CK!

That's a huge box and if using 3/4" wood and a divider panel between the subs, the net internal airspace will be about 3.5 cf/chamber. However, you are close on the internal air space/sub, but way off on the ports. Port noise and sub cone instabilty will result at high power levels with the ports used not.

This box is not properly ported for these subs and damage to the subs at high SPL levels is likely in time. Each chamber should have 2 ports, 4" Dia x 11.0" long. That would match the Ultimate SPL BASS specs recommended by Bahn.

Here are the box specs for the Bahn AWxxxxQ series:

http://akamaipix.crutchfield.com/Manuals/037/037AW1000Q.PDF

Does your amp have a subsonic filter feature available?
Swez

Reply Posted: 04/3/2009 16:34:20 by: guitarexpert89

yea man my amp does have a subsonic feature on it, but it's all turned down. both are sub are briged and the amp is already cross over. so i need bigger ports, ok. and also i heard their free air woofer.. does that mean the magnet is supposed to be inside the box or out?

Reply Posted: 04/3/2009 17:27:12 by: Sponsor of ClubKnowledge! swez Old Man Audio

Yes, larger ports are needed as per specs noted earlier.

Free air means the speaker can be used w/o a box. In this case, you have a box and the ports are not correct. The small and short ports used now, run the risk of damaging the subs with over excursion problems at high SPL levels.

The larger the box, the less air pressure there is inside the box to hold the sub mechanicals in proper control and lower their power handling ability by almost 50%.

For now, set your subsonic filter to 40 Hz. Once the ports are changed, you can reset the filter to 30-35 Hz.

Swez

Reply Posted: 11/2/2009 03:22:00 by: guitarexpert89

thanks man i changed the ports,but now will the bass kick hard if i have the subs with the magnet in side the box or reves them with the magnet outside the box?

Reply Posted: 11/2/2009 11:10:21 by: Sponsor of ClubKnowledge! swez Old Man Audio

Hey guitarexpert89,

Here are the recommended enclosure and port specs for your Bahn subs: The "Ultimate SPL" version is most similar to your current box.

http://akamaipix.crutchfield.com/Manuals/037/037AW1000Q.PDF

If you elected to mount the sub w/ baskets out, the air space per chamber will be 0.2 cf/chamber larger than if the baskets were mounted inside the chambers. That would not change the sonic characteristics in either mounting method to be concerned about. (3.5 vs 3.3 cf/chamber)

The recommended ports: (2 ports) 4" dia x 11" Long per sub chamber. The sub tuning frequency will be between 32-35 Hz. Set your SSF filter at 30 Hz. (4 ports in all)

Yes, with these adjustments, these subs will deliver deep and solid lows. The recommended wattage per sub is 700 watts RMS per sub for the AW1200Q. I would recommend more like 500 watts RMS per sub for this design as the subs will last longer and still sound very strong.

Any questions/comments?
Swez

Reply Posted: 11/2/2009 15:34:19 by: guitarexpert89

thanks man.now can you help me out with this. what do i need so my system can be heared from 2 or more blocks away? i want more sub sonic characteristics. as in i want to be rolling down the street and you can hear my subs subing as im still coming. what do i need for that? more amp power? bigger subs or what?

Reply Posted: 11/2/2009 16:49:25 by: Sponsor of ClubKnowledge! swez Old Man Audio

Try cracking your trunk lid open a few inches. That will allow more bass to escape outside your trunk.

Swez

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