The ferrite magneted 288/299 's are really great drivers.
I truly love my 288-8K's ( used on Emilar EH500 radial horns with a 1.4"-2" adapter ).
That quoted price on eBay is in give-away territory ( IMHO ).
On that Emilar horn they're remarkably linear ( helping make crossover design simplistic > one only needs a 2-pole high-pass ).
Here's a recent trace ( it was so flat that at first I thought my measurement hadn't applied the mic calibration file > but it actually was applied ) ;
- For comparison, I've included a measurement of an 802-8T on an H290B BiRadial done at the same measuring session > same position.
- This is another good looking curve.
Worth noting is that the 10K notch very likely doesn't actually exist.
- ( It appeared in 5 traces representing 5 horn/driver combos made up from 3 different drivers and 3 different horns >> and the notch was always present >> therefore I believe it's a measurement anomaly///reflection )
( Click the pic to supersize ! )
Someone should grab those drivers.
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