Would this sub be suitable for dipole or horn loading or both? - diyAudio
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Old 30th July 2004, 08:36 PM   #1
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Default Would this sub be suitable for dipole or horn loading or both?

Hi, I'm trying to determine my next insane project to do. I'm thinking of buying 10 of these woofers. I'll probably use them in a variety of configurations to play with- I want to try normal direct radiating, horn loaded and dipole, as well as to try 10 (or as many as I can fit) in my car.... What do you all think of these specs? Its a 15" driver, do you think I should go with the 12" version that has similar specs instead?

Driver Complement
Woofer 1 - 15" Diameter (38.10cm)

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Electrical
Overall Frequency Response 18Hz-150Hz
Nominal Impedance 4 ohms
Minimum Impedance 3.5 ohms
Power Handling (continuous) 400 w
Power Handling (peak) 800 w
Efficiency 90 dB
Voice Coil Diameter: Driver 2" (5.08cm)
Magnet Weight 63.40 oz.

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Driver Mounting Depth
Top Mount 7-3/8" (18.73cm)
Bottom Mount 7-15/16" (20.16cm)
Cut-out
Driver Cut-out Diameter 13-7/8" (35.24cm)

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Theile/Small Parameters
Recommended Enclosure Sealed / Ported / Bandpass
Resonant Frequency 24 Hz
Qms 10.21
Qes .49
Qts .47
Vas 6.595 cu.ft/186.75 L
Bl 15.8 Tesla Meters
Sd 126.22 sq.in. / 814.3 sq.cm.
Xmax (linear) .37 in. / 9.5 mm
Xmax (mechanical) .79 in. / 20 mm
Le 3.01 mH

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Other
Product Weight 22.50 lbs.
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Old 30th July 2004, 09:38 PM   #2
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Fine for dipole, so-so for BP and BLH. What size/quantity you use depends on the app's size/performance goals, so it depends.

GM
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Old 31st July 2004, 05:39 AM   #3
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If you want a REAL project think big. Forget your car. Buy a used school bus and all of the drivers that dealer has, get all the 12"er's and also the 15"er's just to be sure.

Oh and one more thang, don't be driving that rig anywhere north of lake ontario thank you very much.
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Old 31st July 2004, 02:54 PM   #4
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Quote:
Originally posted by GM
Fine for dipole, so-so for BP and BLH. What size/quantity you use depends on the app's size/performance goals, so it depends.

GM
What is BP and BLH? Bandpass? Back loaded horn?


Quote:
Originally posted by rcavictim
If you want a REAL project think big. Forget your car. Buy a used school bus and all of the drivers that dealer has, get all the 12"er's and also the 15"er's just to be sure.

Oh and one more thang, don't be driving that rig anywhere north of lake ontario thank you very much.

You know what, that is my ultimate fantasy haha. I have always wanted to do something nuts like use a bus or a limo (or a hearse) and fill it full of woofers!
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Old 31st July 2004, 03:11 PM   #5
GM is offline GM  United States
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Quote:
What is BP and BLH? Bandpass? Back loaded horn?
Correct.

GM
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Old 31st July 2004, 03:56 PM   #6
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What about a "FLH"? Any good in this setup?
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Old 31st July 2004, 04:15 PM   #7
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If it is so-so in a BLH then it will be so-so in a typical BW FLH. An optimum one would have a ~10Hz Fc and be done by ~100Hz, so unless you have a basement you can convert or are willing/able to attach a concrete horn to a side of your listening room.......

GM
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