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pi 4 theater question [message #51089] Mon, 14 May 2007 06:30 Go to next message
gabbe is currently offline  gabbe
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Registered: May 2009
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hi wayne,

i managed to get a pair of 2226, i know what to do with the box , can u please let me know what should i do with my x over?

thanks

zeno

Re: pi 4 theater question [message #51092 is a reply to message #51089] Mon, 14 May 2007 11:30 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
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Registered: January 2001
Illuminati (33rd Degree)

Just remove the Zobel (R3 and C5) and the 10uF capacitor (C4) from the woofer circuit.


4 Pi pro with JBL 2226 [message #51093 is a reply to message #51089] Mon, 14 May 2007 11:31 Go to previous messageGo to next message
spkrman57
Messages: 522
Registered: May 2009
Illuminati (1st Degree)
Zeno,

With the 2226 a 1.6khz crossover is recommended.

For 2226H - .7 mh coil
For 2226J - 1.4 mh coil

3rd order hi pass w/HF EQ per Pi speaker crossover.

Wayne can provide the exact schematics if you ask him.

Regards, Ron


Re: pi 4 theater question [message #51094 is a reply to message #51092] Mon, 14 May 2007 11:33 Go to previous messageGo to next message
spkrman57
Messages: 522
Registered: May 2009
Illuminati (1st Degree)
Wayne,

I guess I posted same time as you and I guess I did not see the real question Zeno needed answered.

You seem to have it wrapped up!

Ron

Re: pi 4 theater question [message #51096 is a reply to message #51094] Mon, 14 May 2007 11:37 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
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Registered: January 2001
Illuminati (33rd Degree)

Wow! Yeah, it looks like we posted around the same time. Thanks for posting!



Re: pi 4 theater question [message #51097 is a reply to message #51092] Mon, 14 May 2007 12:16 Go to previous messageGo to next message
gabbe is currently offline  gabbe
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Registered: May 2009
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thanks wayne,

it is so easy, i will do it over the week end

cheers

zeno

Can I do the same with JBL2225 [message #51101 is a reply to message #51092] Tue, 15 May 2007 04:02 Go to previous messageGo to next message
Kim Schultz is currently offline  Kim Schultz
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Registered: May 2009
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I did the same with the 2225H woofer in a temporary 4Pi clone, but when I run the auto eq. in my surround receiver, it eq´s 2khz and 4khz about 6-8db down.
I think the 2225 needs a second order filter.

Re: Can I do the same with JBL2225 [message #51103 is a reply to message #51101] Tue, 15 May 2007 11:08 Go to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 18783
Registered: January 2001
Illuminati (33rd Degree)

You're right that the 2225 generates less output above 1kHz than the 2226. You really can't use the 2225 up as high; Best to crossover the 2225 below 1kHz. It's a good woofer for a seven π, but isn't suitable for a four π speaker, at least not without making crossover changes to lower the crossover point.


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