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A Neat Iota Alpha Inspired Speaker, the Zetas

I recently saw a thread on DIY Audio about the Neat Iota Alpha speakers. They are kind of a neat concept, and I thought they looked really cool. I am planning on building something that resembles them, but much bigger. I plan to use the HIVI RT1.3WE tweeter, the MAC-04 as a mid, and a down firing Dayton Audio SD270A-88 8" driver. I think I have a design where I can start sealed and go ported by drilling holes in a divider and adding a port. It looks like the lower rectancle is .7 cubic feet, which would give me a F3 of 55hz sealed, and if I opened it up to the top I would have 1 cubic foot tuned to 30hz for an F3 of 33 hz. The only reason I am thinking of going sealed, is that I am worried I may get a bit of a peak in the response due to basically slot loading the woofer in down firing position.

jr@macSilver1omohifisideSteve_Lee6thplanetAnalogkid455

Comments

  • edited October 1

    Here is the predicted low end response of the sealed and ported versions. Also, the speaker is 10x10"x33" tall. I hope to start cutting wood in the next couple of weeks.

  • Depends on how much the cabinet is elevated off the floor, but since it would be open to all sides I doubt it would take much elevation to minimize any "loading". Always a hard decision between sealed and ported, but you can always stuff a port.

    johnny5jzAnalogkid455
  • I got all of my wood cut and started assembling the first one tonight.

    jr@machifisidetajanesSteve_Leeugly_woofer6thplanet
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