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Re: 4PI Plans Request [message #90919 is a reply to message #90605] Wed, 25 September 2019 04:38 Go to previous messageGo to next message
malyh is currently offline  malyh
Messages: 2
Registered: September 2019
Esquire
I'd appreciate your plans for JBL 2226h and B&C DE250. Thank you in advance, mh
Re: 4PI Plans Request [message #90921 is a reply to message #90919] Wed, 25 September 2019 08:38 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 17570
Registered: January 2001
Illuminati (33rd Degree)

You've got mail!
Re: 4PI Plans Request [message #90935 is a reply to message #90921] Thu, 26 September 2019 02:30 Go to previous messageGo to next message
malyh is currently offline  malyh
Messages: 2
Registered: September 2019
Esquire
Dear Wayne,

thank you for plans! I've just realized that my 2226 are 16 Ohm version (no H ones) Could the Pi 4 be done with them? Do you have by any chance a crossover for this "J" version of 2226?

Thank you, mh
Re: 4PI Plans Request [message #90937 is a reply to message #90935] Thu, 26 September 2019 10:18 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 17570
Registered: January 2001
Illuminati (33rd Degree)

Sorry, no. The design requires the 8Ω 2226H.

Some people have reported using the 2226J in a modified design, but I have not seen measurements of such a speaker, nor have I made any measurements myself. So I don't know how much of a change there is.

People that modify the crossover for a 2226J double the inductor values and half the capacitor values in the woofer circuit. They also attenuate the tweeter 3dB to match the voltage sensitivity of the 2226J. This is done by changing R1/R2 values as shown in the chart below:
Re: 4PI Plans Request [message #90939 is a reply to message #90937] Thu, 26 September 2019 10:37 Go to previous messageGo to next message
bigyank is currently offline  bigyank
Messages: 2
Registered: July 2019
Esquire
One could always get those 2226J's reconed as 2226H and you'd be starting with brand new woofers for your brand new pair of 4 Pi speakers.
Re: 4PI Plans Request [message #90941 is a reply to message #90939] Thu, 26 September 2019 11:10 Go to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 17570
Registered: January 2001
Illuminati (33rd Degree)

Absolutely.
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