Found these drivers at Zalytron- focal 7w4411 and the high frequency dropoff at 3khz is like a second order crossover. The tweeter can be a ribbon tweeter like the Hi-Vi RT1C whose specs are at madisound:
https://www.madisound.com/store/product_info.php?cPath=45_229_236&products_id=1486
This ribbon drops off at 3.5khz and has great off axis dispersion as does the midrange. The midrange has a 10 ohm nominal impedence making it perfect doubling as an mtm with a cap and potentiometer on the tweeter to control high frequency energy, it seems a perfect match and able to run without a crossover. As a sealed or even vented unit the mids should give tight bass down to 50 hz, covering the entire vocal range without the fog of a blocking cap and inductor.
Any builders out there want to put in their 2cents on whether they forsee problems with the high 3-3.5khz crossing point in an mtm rather than tmm format? Also, may be better to put in an acoustic suspension enclosure to get a quick drop off of the bass to easily be supplemented with a sub.
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Topic - concept for crosoverless speaker - ChasLieb 11:05:05 11/25/10 (10)
- Why would you want a 2nd order acoustic anyways? - Presto 10:21:17 11/30/10 (1)
- Dude, you make it sound so intimidating! - caspian@peak.org 09:21:01 12/01/10 (0)
- Some thoughts on this - caspian@peak.org 09:12:56 11/26/10 (2)
- RE: Some thoughts on this - ChasLieb 21:39:09 11/27/10 (1)
- More thoughts on this - caspian@peak.org 08:39:21 11/29/10 (0)
- RE: concept for crosoverless speaker - b.l.zeebub 15:58:27 11/25/10 (1)
- RE: concept for crosoverless speaker - ChasLieb 18:37:53 11/25/10 (0)
- RE: concept for crosoverless speaker - Mr. Dick Hertz 12:25:44 11/25/10 (2)
- RE: concept for crosoverless speaker - ChasLieb 18:30:57 11/25/10 (1)
- RE: concept for crosoverless speaker - b.l.zeebub 00:46:48 11/26/10 (0)