RCF CDK455 1-Inch Compression Driver
The CDK455 is a replacement and OEM compression driver for two-way point-source cabinet designs. Its ultra-compact body and 1.75-inch Polyimide-Kapton dome allow a low crossover point, which is what lets a designer hand more of the midrange to the horn instead of the woofer. A reinforced-rib bonding design on the voice coil former is aimed at long-term reliability under continuous program.
The 1-inch exit throat mates to standard horns, nominal impedance is 8 ohms, and it handles 70 W continuous with 140 W program at 109 dB sensitivity. Frequency range runs 1.2 kHz to 20 kHz. The ceramic magnet assembly mounts on four 6 mm threaded holes at 90 degrees and weighs 2.71 lbs.
| Exit Throat Diameter | 1.0 inch / 25 mm |
|---|---|
| Nominal Impedance | 8 ohm |
| Program Power | 140 W |
| Power Handling | 70 W |
| Sensitivity | 109 dB |
| Frequency range | 1200 - 20000 Hz |
| Diaphragm Material | Polyimide |
| Voice Coil Diameter | 1.75 inch / 44 mm |
| Magnetics | Ceramic |
| Weight | 1.23 kg / 2.71 lbs |







