Open Baffle, No Compromises

Designer: RobAus

Project Time: 8-20 hours
Project Complexity: Hobbyist
Project Cost: $100-$500

I had a pair of open baffles that I made which were a bit of a prototype/compromise. These were designed from scratch with specific drivers in mind. I still can’t believe the sound, or that they made it into the Lounge room ๐Ÿ™‚

Enclosure Design
yeah so its a board…. but seriously, i used the freeware edge program and martin j kings excel calculators to match my drivers specs and its worked out very well.

Amplifier/Crossover Configuration
5khz 2nd order high pass on ribbon. 250hz-5khz 1st order on the Celestian 5″s 250hz 1st order on the beta15a

Enclosure Assembly
so, again, its a board. cut the holes, make em straight, add some brackets for feet.

tight controlled bass, realism and the speed and clarity with witch its delivered is a listening experience that will change your life! can you tell I like them? I work in a lot of studios, have made some great speakers, listen to sets at shows at nauseum but these, these are the ducks nuts!

About The Designer
Rob is an audio and communications engineer working in tv and radio broadcast for the last 15 years. Impressive audio is a must. Listening should be an experience.


Add yours
  1. 4

    I have a quad of Dayton IB15’s waiting for a project. Is there a part number for the mids and ribbon or other recommendations for likely candidates?

  2. 5

    I talked to some of the guys at Parts Express, and these were their best guesses for the parts used:
    1. Eminence beta-15A woofer, part 290-410 $80
    2. Celestian 5″ mid, part 294-2050, $35
    3. Dayton Audio PT2C-8 Planar Tweeter, part 275-085, $55

    the woofer is 98db, the mid is 91 db, and the tweeter is 94db, so depending on the listener, maybe an L pad could be used to bring the tweeter down a bit. sounds like a premade crossover, like part 260-150 would work, but one would probably need to stick to one mid in that case, instead of the two in this design. maybe a crossever from Bob Craft on ebay would be better.

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