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pi 4 theater question [message #51089]

Mon, 14 May 2007 06:30

gabbe
Messages: 22
Registered: May 2009

Chancellor

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

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Re: pi 4 theater question [message #51092 is a reply to message #51089]

Mon, 14 May 2007 11:30

Wayne Parham
Messages: 18774
Registered: January 2001

Illuminati (33rd Degree)

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

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4 Pi pro with JBL 2226 [message #51093 is a reply to message #51089]

Mon, 14 May 2007 11:31

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

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Re: pi 4 theater question [message #51094 is a reply to message #51092]

Mon, 14 May 2007 11:33

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

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Re: pi 4 theater question [message #51096 is a reply to message #51094]

Mon, 14 May 2007 11:37

Wayne Parham
Messages: 18774
Registered: January 2001

Illuminati (33rd Degree)

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

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Re: pi 4 theater question [message #51097 is a reply to message #51092]

Mon, 14 May 2007 12:16

gabbe
Messages: 22
Registered: May 2009

Chancellor

thanks wayne,

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

cheers

zeno

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Can I do the same with JBL2225 [message #51101 is a reply to message #51092]

Tue, 15 May 2007 04:02

Kim Schultz
Messages: 85
Registered: May 2009

Viscount

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.

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Re: Can I do the same with JBL2225 [message #51103 is a reply to message #51101]

Tue, 15 May 2007 11:08

Wayne Parham
Messages: 18774
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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