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Enclosure volume. [message #53059] Thu, 08 January 2009 15:16 Go to next message
Castlesteve is currently offline  Castlesteve
Messages: 10
Registered: May 2009
Chancellor
Hi,
I have just picked up a pair of JBL2225h woofers and am trying to design a pair of enclosures for them. I`ve tried modelling in WINISD but keep struggling to get a good response curve especially in a sealed enclosure. What do you recommend? Sealed or ported? How many cu ft? I`m hoping i can do something around 5 cu ft.
Regards, Steve.

Re: Enclosure volume. [message #53060 is a reply to message #53059] Thu, 08 January 2009 17:40 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18783
Registered: January 2001
Illuminati (33rd Degree)

The JBL 2225 is a nice midwoofer. I'd use a cabinet from 2.5ft3 to 5.0ft3 tuned to 40Hz. That gives a nice smooth rolloff. If you want, I can send plans for the four π or seven π loudspeakers. The JBL 2225 can be used in either one.


Re: Enclosure volume. [message #53061 is a reply to message #53060] Thu, 08 January 2009 19:37 Go to previous messageGo to next message
Castlesteve is currently offline  Castlesteve
Messages: 10
Registered: May 2009
Chancellor
Wayne,
thanks for the reply. I would very much appreciate a set of plans for the 4 Pi. I`m trying to get solid bass into the low 40s and am hoping these woofers will work out for me.
Cheers, Steve.

You've got mail! [message #53062 is a reply to message #53061] Thu, 08 January 2009 20:11 Go to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 18783
Registered: January 2001
Illuminati (33rd Degree)

JBL 2205, 2225 and 2226 woofers aren't subs, but they are some of the best sounding midwoofers I've ever used. They have well damped cones that provide smooth midrange and flux stabilization that reduces distortion.

You can always add subs, which smoothes room modes in addition to increasing bass extension. I use four π speakers and three π subwoofers, and the sound is beautiful. It is delicate and powerful at the same time.


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