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3Pi Speaker plans request [message #78957] Tue, 14 January 2014 22:24 Go to next message
cguyome is currently offline  cguyome
Messages: 8
Registered: August 2011
Esquire
Hello Wayne,

May you send me the 3Pi speaker plans with the 4012HO and 2426H ? I would like to try these speakers. Many thanks !
Best regards,

Guillaume.
cguyome@gmail.com
Re: 3Pi Speaker plans request [message #78961 is a reply to message #78957] Wed, 15 January 2014 09:51 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18787
Registered: January 2001
Illuminati (33rd Degree)

You've got mail!

Re: 3Pi Speaker plans request [message #78964 is a reply to message #78957] Wed, 15 January 2014 20:39 Go to previous messageGo to next message
cguyome is currently offline  cguyome
Messages: 8
Registered: August 2011
Esquire
Thanks Wayne !
Re: 3Pi Speaker plans request [message #79003 is a reply to message #78961] Tue, 21 January 2014 02:00 Go to previous messageGo to next message
cguyome is currently offline  cguyome
Messages: 8
Registered: August 2011
Esquire
Hello Wayne,

Is the width of 20" is important for the 3pi, or can I reduce it to 15" or less ? Thanks.

Regards,

Guillaume.
Re: 3Pi Speaker plans request [message #79004 is a reply to message #79003] Tue, 21 January 2014 08:02 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18787
Registered: January 2001
Illuminati (33rd Degree)

Don't change the cabinet dimensions unless you have measuring equipment and can verify the changes made. Cabinets this size develop standing waves in the lower midrange, so dimensions and woofer and port position are important. You do not want a pressure node to be where the woofer or port are, because that would cause response ripple.
Re: 3Pi Speaker plans request [message #79006 is a reply to message #78957] Tue, 21 January 2014 09:10 Go to previous messageGo to next message
cguyome is currently offline  cguyome
Messages: 8
Registered: August 2011
Esquire
Thanks Wayne. I asked you for that because I want to tranform the 3pi cabinet in a TQWT for the 4012HO. The width will be about 14".

Regards,

Guillaume.
Re: 3Pi Speaker plans request [message #79008 is a reply to message #79006] Tue, 21 January 2014 09:55 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18787
Registered: January 2001
Illuminati (33rd Degree)

As long as you're comfortable with measurements and can do the design work yourself, that sounds like a fun project. You can still depend on the crossover to work as expected provided you keep the woofer/tweeter spacing the same.

As I said earlier, just pay attention to the response in the upper bass and lower midrange, because the standing waves we're worried about tend to be there. The low frequency part is pretty easy - Your job is to get box tuning right using the fundamental mode and attenuate any of the higher frequency modes.

Re: 3Pi Speaker plans request [message #79037 is a reply to message #78957] Thu, 23 January 2014 13:22 Go to previous messageGo to next message
stoli is currently offline  stoli
Messages: 4
Registered: January 2014
Location: Minnesota
Esquire
Hello Wayne, May I have plans for the 3 Pi?

Thank you.
Re: 3Pi Speaker plans request [message #79038 is a reply to message #79037] Thu, 23 January 2014 14:02 Go to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 18787
Registered: January 2001
Illuminati (33rd Degree)

I'll send plans this evening.

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