Rleff - My speakers are not single driver but rather a hybrid something like what Ralph describes. I have a 15 inch woofer in a 5 cu. ft. ported cabinet under each horn. I'm sorry I didn't make that clear. I don't know of any full range driver either. Typically a horn can only cover about two and a half octaves. That's why full horn systems are usually 4-way set-ups.
My horns are driven by permanent magnet compression drivers because I can't afford field coil drivers and because I was told by Bill Woods that the B&C drivers I use perform very near to the level of Cogent Field Coils. Certainly they are as close as I am ever likely to get. the Cogent Field Coil sound. My drivers sell for about $480 each. The Cogents are about $15,000/pair.
My horns are driven by permanent magnet compression drivers because I can't afford field coil drivers and because I was told by Bill Woods that the B&C drivers I use perform very near to the level of Cogent Field Coils. Certainly they are as close as I am ever likely to get. the Cogent Field Coil sound. My drivers sell for about $480 each. The Cogents are about $15,000/pair.