Ripole Subwoofer

[Pelliott321]

does anybody have any first hand knowledge in this design
http://jazzman-esl-page.blogspot.com/2011/01/ripole-subs-are-underway.html?m=1

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IMG_0055.JPG (17.96 KiB) Viewed 27454 times

[Roscoe Primrose]

Looks like the Linkwitz Phoenix except the woofers aren't aligned front-to-back and wired out of phase. His comments about the compression in the space between the drivers being different than the Phoenix are just plain wrong, the Phoenix is push-push too.... Paul (Don Diego) is using a pair of the Phoenix subs that I built years ago with his Acoustat 2+2s.

Roscoe

[Pelliott321]

So his description may be wrong but do you think these will work
I also found this
http://www.peerless.de/index_hifi_en.htm?http://www.peerless.de/hifi/ripol_en.htm

which can be stacked

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ripol_schema.gif (731 Bytes) Viewed 27438 times

[SoundMods]

To me it looks valid and I find it interesting that the free air resonance is lowered. Of course as with all things audio you won't know until you build them.

[Pelliott321]

I got eight woofers salvaged from the Amazings to play with

[Roscoe Primrose]

They're all just variations on SLOBs, they ought to work fine. It's really mostly a question of the size/shape that works for you.

Roscoe

[Pelliott321]

SLOB?

[Roscoe Primrose]

SLOB?

Slot Loaded Open Baffle. There's a thread here: viewtopic.php?f=4&t=819 , and Nelson Pass has an article on passdiy. You've got some reading to do

Roscoe