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4 Pi Plans [message #81041] Tue, 27 January 2015 07:58 Go to next message
RagnarOhman is currently offline  RagnarOhman
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Registered: January 2015
Location: Sverige
Esquire
Hello!

I'm in the verge of diving in to these speakers, I've read quite a bit about them and I've also been looking for a horn loaded DIY build.

Thank you

Ragnar
Re: 4 Pi Plans [message #81042 is a reply to message #81041] Tue, 27 January 2015 10:17 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
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Registered: January 2001
Illuminati (33rd Degree)

You've got mail!

Re: 4 Pi Plans [message #81183 is a reply to message #81042] Thu, 05 March 2015 16:17 Go to previous messageGo to next message
mikeL is currently offline  mikeL
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Registered: March 2015
Location: Brooklyn
Esquire
hi wayne, can i get those 4pi plans as well?
Re: 4 Pi Plans [message #81184 is a reply to message #81183] Thu, 05 March 2015 17:38 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
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You've got mail too!

Re: 4 Pi Plans [message #81189 is a reply to message #81041] Sat, 07 March 2015 10:16 Go to previous messageGo to next message
Zachme is currently offline  Zachme
Messages: 2
Registered: March 2015
Esquire
I'd like to build a pair of these speakers, the 2226 drivers are easy to find for short money on ebay, I was pondering a 4430 design but the drivers are much more expensive and harder to com by. I guess the only real difference is that the 4pi's really need a subwoofer? They roll off rather steeply at 100hz while the 4430's are pretty flat until about 50hz, at any rate, may I have a set of plans please?

Thanks!

Zac
Re: 4 Pi Plans [message #81190 is a reply to message #81189] Sat, 07 March 2015 13:39 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
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Registered: January 2001
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And you've got mail too!

The four π loudspeaker sounds good without subs, but I would definitely suggest subs for the best experience. And subs are recommended not just for added extension but also for modal smoothing. So really, the gradual rolloff below 100Hz is not so much an issue, because the benefits gained from adding flanking subs are significant beyond extension.

Re: 4 Pi Plans [message #81201 is a reply to message #81190] Thu, 12 March 2015 10:52 Go to previous messageGo to next message
Zachme is currently offline  Zachme
Messages: 2
Registered: March 2015
Esquire
One more simple question, I'm planning on using the B&C DE250 compression drivers, which horn is appropriate for the 4 Pi?
Re: 4 Pi Plans [message #81202 is a reply to message #81201] Thu, 12 March 2015 11:00 Go to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 17606
Registered: January 2001
Illuminati (33rd Degree)

The four π loudspeaker uses the H290C waveguide.

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