Building my own speakers

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Hey guys,

I'm fairly new to building my own speakers, so i was just after a little help regarding the cabinet dimensions for the type of speakers i have.

I purchased 2 Vifa P17WJ-00-08 woofers

http://www.speakerbits.com/net/catalogs/showpic1.aspx?ID=VF170B

And 2 Vifa D27TG-45-06 tweeters

http://www.speakerbits.com/net/catalogs/showpic1.aspx?ID=VF027C

I also have 50mm ports.

Obviously im making 2-ways, but after a little research, I found my original dimensions for the box of 440x205x295mm may not me correct.

Can anyone help me regarding the correct dimensions for these specific speakers?

Cheers.
 
Obviously im making 2-ways, but after a little research, I found my original dimensions for the box of 440x205x295mm may not me correct.

That's about a 26.6 litre enclosure tuned to 43Hz, flat fr to about 55Hz according to my calcs and WinISD. Looks fine, although the port dia. might be a bit small for that box.

You could download WinISD and play around with the tuning/box dims etc. The P17WJ is in the driver database.

Jeff
 
Thanks for the reply Jeff.

According to WinISD, it says I need a volume of 21.7 liters and a tuning frequency of 42.79Hz. It then gives me dimensions of 485x314x202mm (Height, Width, Depth), but that equals a volume of 30.7 liters.

How is that so? Am i missing anything?

If I stuck with the original box dimensions, would there be any change in sound compared to those given by WinISD?

Cheers
 
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