For something completely different from what has been printed here before, I decided to walk where PWK already walked a long time ago. I remember reading somewhere that the first Khorn Paul built was a two-way horn system without a crossover. So I decided to go back to the future and repeat this. Using my Khorns and a tube amp with ground, 4,8,16 ohm taps, I wired directly from the midrange Atlas k-55-v driver with soldier lugs (specially modified by PWK for more extended high end) to the 4ohm tap and ground. With a second set of wires, I went directly from the woofer to the 16ohm tap and ground. This type of wiring is nothing new, and there is nothing electrically wrong. It reduces the midrange driver by 6db to match the output of the woofer (bi-wiring). NO CROSSOVER AND NO TWEETER (crossoverless). The amplifier must turn on and turn off without sub-sonics and not have hum.
The Atlas midrange driver is rated full power at 250hz (120db) 40 watts and with a simple 6db filter would be at 102db at 30hz. So if I don't go above 102db (very loud), not use a turntable (subsonics) or tone controls or test tones everything should work fine crossoverless. The sound was good, better then a stock AA networks, but not great. I next removed the bug screen, and screen holder from the k-55-v with soldier lugs and reversed the polarity of the driver. Without a capacitor on the midrange the driver has to have reverse polarity to have proper phase. The sound was very good. I then shorten and separated my speaker wires, and interconnect to as short as possible and after opening the curtains, it sounded EXCELLENT. The above method sounds complex to implement, but it's really very simple.
This method could also be used for La Scalas, Belles, and even Cornwalls.
1. No capacitor, inductor, autoformer, or resistor colorations.
2. No impedance mismatch.
3. No time alignment problems between midrange and tweeter.
4. No tweeter.
5. Not Complex, Simple.
6. No money.
If you play your Khorn above 102dbs, have turn on, or turn off noise or hum you can add a high quality 40uf in series with the k-55-v midrange unit with soldier lugs and not reverses the polarity but this will hinder the sound. You can also add a 14 gauge 2.5uH air coil inductor in series with the woofer if it's too wooly sounding, but this to will hinder the sound but tighten the bass.
For EE's or crazies who want the very ultimate Khorn sound you should passively bi amp, solid state amp on the bass with a 2.5 uH air coil inductor and a small SET tube amp directly connected with reverse polarity to the k-55-v with soldier lugs without bug screen. Passive preamp to a hi quality cd player and your done. I have been using this method for about 6 months and I love it, thank you PWK.
I hope someone will try the above method, but as always you try it at your own risk.