subwoofer box

kinser · 10th April 2004, 06:49 PM

Hi all,
I have a 400w 8ohm subwoofer, an STK4142II in bridge mode
and the subwoofer filter www.lcaudio.dk/subfilter.pdf (please look at it, it might help)
what kind of box should I make for the subwoofer? (sealed, vented etc..)
thanks kinser
(I'm only 13 years old)

moving_electron · 10th April 2004, 07:26 PM

No one can make any specific recommendations without the parameters for the subwoofer. You will need to find these (easiest) or measure these (harder).

The general recommendation on a place to start is to download a copy of WinISD and play with some box sizes. WinISD will let you model vented and sealed types of boxes, the two most straightforward boxes.

Most of your choice of box size and type will depend on frequency goals, SPL (sound pressure level), and whether you want to optimize for music or HT (Home theater) reproduction.

If you have access to the Excel Spreadsheet program, the BoxyCad is a pretty nifty tool to work out different box dimensions once you have decided on a box volume.

Looks like your crossover can crossover pretty much anywhere you want. What is the wattage output of your amplifier ?

sreten · 11th April 2004, 12:25 PM

Post details of your subwoofer driver, can't help otherwise.

sreten.

kinser · 11th April 2004, 02:22 PM

moving_electron,
my amplifier gives about 100w rms
at 8 ohms. I have the sub with the amp and filter all connected on my floor and it sound damm good!!
to bad that i cant take a picture of it, my dad is in South Africa for 10 days and he took the camera with him! sorry.....
well any way i will try that program WinISD and see how it goes
thanks,
kinser

troystg · 25th November 2006, 10:51 PM

Did you ever get that STK4142ii chip working, and if so what was the final layout?

I am tearing apart an old rx'er now and would also like to reuse the chip.

Thanks in advance,

Troy

10th April 2004, 06:49 PM	#1
kinser diyAudio Member Join Date: Jan 2004 Location: R'aanana	subwoofer box Hi all, I have a 400w 8ohm subwoofer, an STK4142II in bridge mode and the subwoofer filter www.lcaudio.dk/subfilter.pdf (please look at it, it might help) what kind of box should I make for the subwoofer? (sealed, vented etc..) thanks kinser (I'm only 13 years old)

25th November 2006, 10:51 PM	#5
troystg diyAudio Member Join Date: Apr 2004 Location: Lousy Anna	Did you ever get that STK4142ii chip working, and if so what was the final layout? I am tearing apart an old rx'er now and would also like to reuse the chip. Thanks in advance, Troy __________________ Troy Thinking positive doesn't make things better, it makes you a better person.

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10th April 2004, 07:26 PM	#2
moving_electron diyAudio Member Join Date: Jan 2004 Location: Where the rain does fall but the trees grow tall	No one can make any specific recommendations without the parameters for the subwoofer. You will need to find these (easiest) or measure these (harder). The general recommendation on a place to start is to download a copy of WinISD and play with some box sizes. WinISD will let you model vented and sealed types of boxes, the two most straightforward boxes. Most of your choice of box size and type will depend on frequency goals, SPL (sound pressure level), and whether you want to optimize for music or HT (Home theater) reproduction. If you have access to the Excel Spreadsheet program, the BoxyCad is a pretty nifty tool to work out different box dimensions once you have decided on a box volume. Looks like your crossover can crossover pretty much anywhere you want. What is the wattage output of your amplifier ?

11th April 2004, 12:25 PM	#3
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	Post details of your subwoofer driver, can't help otherwise. sreten.

11th April 2004, 02:22 PM	#4
kinser diyAudio Member Join Date: Jan 2004 Location: R'aanana	moving_electron, my amplifier gives about 100w rms at 8 ohms. I have the sub with the amp and filter all connected on my floor and it sound damm good!! to bad that i cant take a picture of it, my dad is in South Africa for 10 days and he took the camera with him! sorry..... well any way i will try that program WinISD and see how it goes thanks, kinser

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