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4 Pi build Ferrari Red [message #99655] Thu, 06 August 2026 12:26 Go to next message
dl4137 is currently offline  dl4137
Messages: 2
Registered: October 2025
Esquire
Breaking them in now. Painting- especially the prep was a labor of love. Initially running these with a Dynaco St-35 tube amp but will be switching to ModWright Class A mono blocks and a ModWright Analog Bridge.

/forum/index.php?t=getfile&id=3600&private=0
Re: 4 Pi build Ferrari Red [message #99658 is a reply to message #99655] Thu, 06 August 2026 20:16 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 19079
Registered: January 2001
Illuminati (33rd Degree)

Those are some sexy-lookin' speakers!

Love 'em!
Re: 4 Pi build Ferrari Red [message #99677 is a reply to message #99658] Sun, 09 August 2026 11:42 Go to previous messageGo to next message
dl4137 is currently offline  dl4137
Messages: 2
Registered: October 2025
Esquire
Thanks- I will be moving them to a room that is 14'x14'x9' High vaulted ceilings. Will use 4 subs to help me address standing waves and bass issues that I bet I'll have. I might reach out to you for a little guidance.
Re: 4 Pi build Ferrari Red [message #99678 is a reply to message #99677] Sun, 09 August 2026 21:37 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 19079
Registered: January 2001
Illuminati (33rd Degree)

That's a perfect plan.  https://audioroundtable.com/images/thumbs-up.gif
Re: 4 Pi build Ferrari Red [message #99685 is a reply to message #99677] Tue, 11 August 2026 16:57 Go to previous messageGo to next message
grindstone is currently offline  grindstone
Messages: 58
Registered: May 2010
Baron
Nice work -- thanks for posting.  

Some papers that might be handy at diyA, FWIW.

Re: 4 Pi build Ferrari Red [message #99686 is a reply to message #99685] Tue, 11 August 2026 17:28 Go to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 19079
Registered: January 2001
Illuminati (33rd Degree)

Be sure to use flanking subs for two of your subs.  That is part of the overall system design, because it not only contributes to modal smoothing but also to baffle-step compensation and SBIR mitigation.

Then place the other two subs in a Welti or Geddes configuration.

Actually, by the time you get to four subs, most agree that it almost doesn't matter where you put them as long as they aren't grouped together.  You can choose placement where is most convenient or placement guided by measurements or a by a little bit of both.
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