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I have 2 audiobahn 2300hcts(2400watts each)im want to run 4 15s in a ported box and i only want use 1 port(no chambers).Wanted to know how to gain match both amps to get even distribution
Re: 2 amps, 4 15s ,1 port .don't want to use dividers
Well with no chambers its gonna be hard due to the air 1 subs pushes will cause the other sub to move inaccuratly. other then beating that out tune the amp to your liking by the music you listen too.
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to drop the amp load to 1 ohm you need to divide the output signal path and the best way is by wiring a second woofer in parallel as seen in the ideal diagram attached this has the desired effect of doubling the volume .
since 2 ohm divided by 2 is 1 ohm load connected to your amp.
so the short answer is no you can't do that with a single woofer
i was not able to locate a manual but i did find some interesting information that hopefully may help, The AudioBahn AW1000X Car Subwoofer Features: dual 4-ohm voice coils, non-pressed pulp cone, huge foam surround, frequency response 23-500 Hz, power range 50-600 watts RMS (300 watts per coil), peak power handling 1,200 watts, sensitivity 91.1 dB, top-mount depth 5-1/4" ,sealed box volume: 0.4-.95 cubic feet, ported box volume: 1.632 cubic feet.
You can use this speaker in either a ported or sealed box. A sealed box would be smaller, (sealed box volume: 0.5 to 1.25 cubic feet) the larger the box the more base you will get. With a sealed box your amp has to work double hard as it would in a ported box ( 1.3 to 3.2 cubic feet) You will get close to double the volume in a ported box. Tuning a ported box with the size and length of the port will determine the hertz the speaker will play at.
i'd need more info but from what you've stated, sorry to break it to you but it sounds likely you've incorrectly wired you speakers and blown your amp. this will prove no doubt an expensive mistake and learning exercise.
Get a 1200 watt 4 channel amp that's 2 ohm stable. Bridge 2 channels into the single 550W rms audiobahn. Use the other channels for each side of the dual box. Turn the LPF or Low Pass Filter on and vibrate down the road.
A pair of JH4512-04's can be wired to 2 ohms if the subs themselves are paralleled. There's only one voice coil and it's 4 ohm. If wired in series, the final impedance to the amp would be 8 ohms. They cannot be wired to 1 ohm.
In bridged mode, your 4-channel amp is only stable down to 4 ohms. You can bridge 2 of the channels to provide a relatively low 200 watts RMS X 2. The best power solution for your subs would be to bridge channels 1 and 2 and wire one sub to it. Likewise, bridge channels 3 and 4 and connect the other sub. If you connect both subs in parallel, the impedance will be too low causing the amp to overheat and possible fail.
As for the settings: Low pass filter on, crossover somewhere between 80-100, input levels to match your receiver, and bass boost to your personal preference.
Wow you are in luck, I used to be an Audiobahn dealer. Designing sub enclosures is my fulltime job. So here you go.-
If you are looking for sound that is very smooth, and has a very low end shaking everything setting off car alarms. You will need a PORTED BOX that is 3 CUBIC FEET FOR EACH SUB WOOFER. It actually calls for 2.7cu.ft but after you add speaker displacement and bracing it should be at least 3 cu.ft. The port can be either round or square made of plastic or 3/4" wood respectively. My port suggestions are dependent on how much space you have. The shortest round port might make some noise (too much pressure!). So think about that first. Anyway the short port is 3" diameter and 15.5" long. The longer port is 4" in diameter and 28.25" long. The rectangular wood port can also be either (port measurements are inside diamensions) 3" w x 3" w x 18.5" long (short port) or 2 w x 10.5 h x 48' long. The second longer wood port is recommended most but will take up a lot of space. The fact that you have to subtract the port volume from the box makes for space issues in cars. Also the second wood port sounds better and won't make much wind noise, but takes up .75 cu.ft worth of space. So in plain english your box will have to have an internal volume of 3.75cu.ft. An example of this could be made of 3/4" thick MDF, have 1" x 1" internal bracing and measure (box dimensions are external and assumes the use of 3/4" MDF) 12" h x 18" w x 30" deep. The port is an integral part of the box fitting inside. I'm sorry I can't provide any drawings to make things easier. Now this box size is one that I ran through a computer program I use. So it is not the same as the manufactures recommendations. I will list those as well.
The second box is an example using a round short port and also uses 3/4" MDF, 1 x 1" bracing, the 3" dia x 15.5" long port, and measures 12" x 18" x 24" externally.
If space is an issue try checking out the information below. -I got it from Audiobahn-
If for some reason it doesn't show up or you need assistance let me know. Good luck and enjoy your new setup-I'm sure you'll be happily disturbing the peace soon!
-Dynami
Model # AW1006T
Ported
Air Space (Cu. Ft.) 0.65
Port Size (Inches) 2 x 6.5
Port Vel. (%) 48.31
-3dB (Hz) 31.5
Tune Freq. (Hz) 40
Sub Disp. (Cu. Ft.) 0.21
Port Disp.(Cu. Ft.) 0.01
Total Vol. (Cu. Ft.) 0.75
Ported
Air Space (Cu. Ft.) 1.4
Port Size (Inches) 3 x 6.75
Port Vel. (%) 24.19
-3dB (Hz) 30
Tune Freq. (Hz) 39
Sub Disp. (Cu. Ft.) 0.21
Port Disp.(Cu. Ft.) 0.024
Total Vol. (Cu. Ft.) 1.5
Ported
Air Space (Cu. Ft.) 2.4
Port Size (Inches) 4 x 6.25
Port Vel. (%) 14.39
-3dB (Hz) 29
Tune Freq. (Hz) 39
Sub Disp. (Cu. Ft.) 0.21
Port Disp.(Cu. Ft.) 0.04
Total Vol. (Cu. Ft.) 2.5 EBP 74 80 80
Sealed NR NR NR
Minimum (Cu. Ft.) 0.5
Maximum (Cu. Ft.) 1 SPL (dB) 80
All sealed boxes already include the displacment for the subwoofer. NR = (Not Recommended)
If you can access the inside of the sub box by removing the speaker, you may be able to measure the 3 dimension of each side of the enclosure. 1 cubic foot is 12x12x12 inches cubed. That is 1728 cubic inches per cubic foot. If you measure the inside dimensions of one of the enclosure sides as 10x14x8 inches, then that is 1120. 1120 divided by 1728 is 0.648 cubic feet. Alternatively, you could estimate the volumes of each side of the box by measure the outside, figuring out where the box divider board is, subtracting the width of the boards used to make and then calculate. Otherwise, I do not know the enclosure that that sub comes in. Good luck. Let us know how it goes.
Try to some polyphil or something like cotton to fill some of the empty space in the box to stop the echo. be sure to chek specs for the speaker you are building the box for. Speakers and their enclosures differ by speaker.
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