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Audiobahnn AW1200Q Subwoofer
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by guitarexpert89
Start New Question Here -- Back to TreeYear 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 manReply Posted: 04/3/2009 03:18:22 by: 
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: 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.
SwezReply 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: 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: Try cracking your trunk lid open a few inches. That will allow more bass to escape outside your trunk.
SwezReply Posted: 12/5/2009 02:15:46 by: guitarexpert89 hey man wuts sup? well i just got a audiobahn a3201q amplifier and i wanted to know if u can help me by telling me whats the real rms on that amp, because they told me that its 2500 watts rms. and if so what will be the biggest, loudest and strongest subwoofer's that amp could handle?
Reply Posted: 12/5/2009 05:38:28 by: Hey dude,
http://www.crutchfield.com/S-P00gA8sDvir/p_037A3201Q/Audiobahn-A3201Q.html
That amp would be a decent fit for your subs pretty well if the subs are wired properly. (Each sub coil A&B in series, both subs in parallel for a net 4 ohm load and the amp bridged Mono = 4 ohm load) Like this:
http://crutchfield.custhelp.com/rnt/rnw/img/enduser/2Ch_2-4ODVC.jpg
This amp puts out more like 800 watts RMS @ 4 ohms when bridged. That's a safe range for your subs as they won't last very long if you powered them much above 500 RMS per sub. It also has a subsonic filter.
Did you install the recommended ports yet? If not, these subs will be toast in no time.
SwezReply Posted: 03/12/2010 01:08:31 by: guitarexpert89 hey swez long time no talk. hows it going? well i just up graded to 2 audiobahn immortal 12" subwoofers and a audiobahn a2300hct amp. my first question is how do i wire thise subs at 2ohms. and second do u know the box specs for these subs? my amp should handle them both right
Reply Posted: 03/12/2010 09:48:15 by: OK, the 2300 HCT is a 1 ohm stable amp and these Immortal subs are a good match for that amp. (All coils wired in full parallel will give a net 1 ohm load to this amp... perfect!)
That's the easy part. Now we have to find the recommended enclosure specs for these Immortals. Bookmark of save this link to your favorites for future references:
http://www.audiobahn.com/Audiobahn06/images/tech/2006/boxParams/immortal_subs.pdf
It looks like Bahn receommends sealed for these subs to keep the power handling high enough to get the job done, but not damage the subs with the stronger HCT amp mentioned. Here, I'd suggest a sealed 1.5 cf/chamber sub box for good deep bass and goo power handling,
The EBP spec on this sub is 45. That's right at the boader line between sealed or ported use. To be on the safe side, sealed would be the most conservative/safe box to use for this sub series. Yes, you can go ported with the Everyday Bass Performance specs, but do not use the Ultimate SPL specs as this could blow your subs to pieces if you get a little carried away on a given day.
Comments?
Swez
PS I don't know if Bahn is still in business and making products anymore. Most of the gear I have noted, stopped at 2007 for new products and revisions of older ones. If you need additional Tech Support or repairs on them later, it may be hard to find a good amp tech to fix a damaged amp. Keep that in mind as you buy and tinker with other Bahn products.
Bahns were/are not as robust as other vendor products and they had many an amp go back for repairs at one point or aother. One of our Golds sold them back in the day and he had a lot of returned amps that "futzed out" on his clients and had to be repaired later. This is why he dropped the line and sold off all inventories on hand. (Too many headaches back in 05-06 products)Reply Posted: 03/15/2010 00:57:41 by: guitarexpert89 thanks man 4 the help. when i ask some people who work at stereo shops they dont seem like they know what they talking about. i had another question. Which will give me more bass, two 12" audiobahn immortal each at 2ohms or one 15" orion hcca at 2ohms both with the same amp, the audiobahn a2300hct amp. the car is a buick.
Reply Posted: 03/15/2010 03:29:12 by: Quote: "when i ask some people who work at stereo shops they dont seem like they know what they talking about." There's a good reason for that... they don't have a passion to go beyond the hype and heresay. (Just getting by)
The Bahn's are likely to give the most output in deep, low bass due to the overall cone area and high efficiency. The Orion HCCA is a Competition sub. It's robust enough to take a real pounding, but it is also low efficiency. (HCCA = 84 dB SPL @ 2.83 volts. Bahns are 92 dB SPL @ 2.83 volts) That's a big spread between them.
Another thing to consider, if this Buick has a drop down rear seat for long cargo, drop one section to get more bass into the cabin. Otherwise, all the bass is trapped in the trunk. If the seats don't drop down, some guys have cut large air vents in the rear deck to bring more bass into the main cabin.
Swez
Reply Posted: 03/16/2010 01:08:43 by: guitarexpert89 cool, so two 12" audiobahn immortal will do the job. ok now my trunk has a cut a way between the two 6x9's on the rear deck and also i removed some form from my back set, so i can feel the bass more and two let more air flow back there. do u still think i should go with a sealed box instead of a ported? and also i was thinking of adding a second batterie, would a second batterie be better for my system or should i just get a 20fared cap?
Reply Posted: 03/16/2010 10:24:05 by: Frankly, sealed is the easiest and safest box for your subs. They will still hit hard and opening up the rear deck with an air vent will get more bass into your cabin.
Porting these subs are not redcommended by Bahn as the EBP is 45. Anything above 50 is considered good for porting. These subs are just below that line, so play it safe and go sealed.
Adding a 2nd battery can be a big help on larger amps of 1500 watts or more. A battery stores many thousands of times the power you can get from even a 20 Farad Cap. If you have a voltage gage in the dash cluster, watch it for voltage drops when running your system hard. If it drops below 13.0 volts often, a 2nd battery and doing the Big 3 wiring upgrade should help.
FYI: Caps are helpful for minor light dimming issues. However, chronic low voltage issues will not be helped by a Cap.
Swez
Reply Posted: 03/17/2010 02:36:34 by: guitarexpert89 ok cool man thanks alot. so each sub wired at 2ohms and briged at the amp should give a load of 1ohm on the amp right? and also man do u know how to wire another batt the right way so it can also rechage. and if u do can u please give me step by step on how to do it
Reply Posted: 03/17/2010 09:10:32 by: Have a look at this link and consider the "direct charging" method w/o the diode or solinoid devices. I would start there and if we need to add an isolator or solinoid kit later, it won't be a major rework on what you do now.
http://www.bcae1.com/battiso.htm
Note the fuse protection devices off each battery. This is critical to protect your entire system. The fuse ratings used will be determined by A: The wire gage used on your main feeds & B: The amount of anticipated current draw from the amp off the rear battery.
A #4 gage wire is rated at 80-100A's, depending on the length of the main wire. A #2 gage line is rated for 150A's +. A #1/0 line is rated for up to 300A's of continous current loading. The larger the wire, the more current it will carry to the amp/BAT system and less voltage drop as well.
The Bahn 2300 HCT is a 2 channel, high current amp. It can be bridged Mono and is stable at 1 ohm. (2400 watts) Here, we wirethe subs at the box to 1 ohms and then use the bridging method at the amp as noted in the manual or on the amp speaker terminals. (Usually the + termincal on channel 1 and the - terminal on channel 2 is bridged mode configuration)
The safe and less power consumtion method is running the amp in stereo mode and 2 ohm loads to each channel. (One sub, 2 ohms per channel. The power is less to each sub, but enough to drive each sub well and not fry coils. (600 watts RMS per sub)
I would suggest that method before adding a 2nd BAT. If your electricals can handle it w/ minimal light dimming, call it good.
Comments,
SwezReply Posted: 03/20/2010 21:06:03 by: guitarexpert89 hey man what sup??? well from the last time we talked i asked you which one will hit harded 2 immortals or one 15" orion hcca. well i ended up getting one orion because when i heared it i thought that it was at lest 2x louder and 2x deeper bass, plus it wasnt to much money. now i was wondering if you know what size box i need for one 15" orion hcca like one box desgin to be the loudest deepest bass for only one 15"?
Reply Posted: 03/20/2010 23:34:49 by: I hope you have the HCCA 152 series. (2+2 DVC coils)
Here are the specs for this sub and enclosure suggestions:
http://www.directeddealers.com/manuals/OG/Orion/GHCCA102%202008-11MLweb2.pdf
The enclosure details start on page 18. Page 30 gives the dimensions for a "Street Bass" vented enclosure design. Look it over and see if you can fit this design into your space. The vent dimensions are critical and you'll need a Subsonic filter to protect the sub at high power use.
We can do some adjustments in H, W or depth as needed and adjust the vent as needed to fit.
Review and comment,
SwezReply Posted: 03/21/2010 00:38:07 by: guitarexpert89 yeah man it's the 15.2 the 2ohm sub. Now when it say HCCA152 & 154 Vented SPL Enclosure Only!!! does that mean that this design "SPL" is the loudest with the most hard hitting bass? because they all fit in my car. can u help me out man. on those box design which one do u see that you belive will give me BIG,LOUD,DEEP BASS. which box design will best suite my sub so it can be hear louder from a distant???
Reply Posted: 03/21/2010 06:47:29 by: The SPL Vented box is designed for burp tones at DB Drag contests only. This one is not tuned for general music or it will blow the woofer. The notes say that on page 31. Seem very clear to me what they mean.
Quote..."Note: These SPL enclosures are for dB drag vehicles only!!!!! If music is played through this type of enclosure, the woofer will be damaged! Listed here are starting points, experimentation is the key to success. Use extreme caution, the woofers can be
damaged with frequencies below the tuning frequency."
Use the sub box design on page 30. "HCCA152 & 154 Vented 2000+ Watts Input" This is designed perfectly for your amp and when the sub is well broken in, it will go deep and low at +2000 watts.
Swez
Reply Posted: 03/21/2010 17:41:06 by: guitarexpert89 thanks man for all the help. cool ok thats the box imma make
Reply Posted: 03/22/2010 01:09:41 by: This configuration will surely please the "Basshead" in any crowd. One cool thing about this sub design, rebuild kits you can do on your own if the sub fries.
This is not a cheap to buy sub. However, the rebuild kit puts one back in action in a very short time. (No need to wait weeks/months for a factory rebuild) The user can do this on the fly and be back in action in short order.
Swez
Reply Posted: 03/22/2010 15:00:57 by: guitarexpert89 hey man what is the difference between the 15.2 hcca and the 15.4 hcca? with the same amp and box which one will hit harder?
Reply Posted: 03/22/2010 15:12:27 by: The 15.2 is a 2+2 DVC and can be run at 1 or 4 ohms. The 15.4 is a 4+4 DVC and can be run at 2 or 8 ohms.
If your amp is 1 ohm stable, use the 15.2.
Swez
Reply Posted: 03/22/2010 19:20:57 by: guitarexpert89 if i were to get the 15.4 can i brige it down to 2ohms?
Reply Posted: 03/22/2010 20:05:49 by: The A3201 amp mentioned is a 2 channel amp and your best bet is using the 15.4 version sub and bridge the amp. (2 ohm load = 840 watts RMS) It's likely this amp will meter out to more like 900 watts @ 2 ohms.
http://www.crutchfield.com/S-O6XzfNDnzwJ/p_037A3201Q/Audiobahn-A3201Q.html
I thought we talked about the HCT 2300 a while back as the amp you were going for??? The 2300 is more powerful and to get the most from it, a 1 ohm net load would be the right choice.
No matter, it's only a few dB more, but draws a lot more juice too.
SwezBack to Tree
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