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.
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
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
Those numbers checked out on both AJDesigner and diysubwoofer.org spreadsheets...both free programs.
http://www.diysubwoofers.org/prt/ported.zip
http://www.ajdesigner.com/downloads/ajvented.exe
http://www.diysubwoofers.org/prt/ported.zip
http://www.ajdesigner.com/downloads/ajvented.exe
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