CELESTION CDX14-2420
CELESTION CDX14-2420 — 1.4"-Hornanschluss · Kompressionstreiber · Neodym
70 W AES - 106.5 dB - 800 – 20000 Hz - 8 Ω
Art.-Nr.: 42A-CHS-KD-CEL-0029
Documents
CELESTION CDX14-2420 — 1.4" · Compression driver
1.4-inch exit neodymium magnet compression driver
70 W AES · 106.5 dB Sensitivity · Frequency range 800 Hz – 20000 Hz
Features
- Maximum modal suppression phase plug
- Deep-drawn titanium diaphragm with polyimide surround
- 1,200Hz recommended min. crossover freq (12dB/oct)
Technical data
- Throat: 1.4 "
- Voice coil: 2.4 "
- Power handling: 70 W
- Programme power: 140W
- Sensitivity: 106.5 dB
- Impedance: 8 Ω
- Magnet: Neodymium
- Diaphragm: Titanium
- Surround: Polyimide
- Voice coil wire: Copper-clad aluminium, edge-wound
- Weight: 1.5 kg
- Mounting depth: 56 mm
- Frequency range: 800 – 20000 Hz
- Rec. crossover (12 dB/oct.): 1200 Hz
Datasheet (PDF) · Manufacturer page
Part no.: 42A-CHS-KD-CEL-0029
Celestion CDX14-2420: 1.4" neodymium driver, titanium diaphragm, 70 W AES, from 800 Hz
With the CDX14-2420, Celestion's CDX series moves up to the 1.4" horn interface. The neodymium driver uses a 2.4" voice coil of edgewound copper-clad aluminium wire and a deep-drawn titanium diaphragm with polyimide surround. Separating diaphragm and surround material is deliberate: titanium provides the stiffness for clean treble, while the polyimide surround stays compliant and keeps break-up resonances out of the transition band.
The phase plug is designed for maximum modal suppression, which smooths the response above the region where the diaphragm no longer moves as a piston. The key data: 70 W AES, 140 W continuous, 106.5 dB sensitivity at 8 Ω, frequency range 800 to 20,000 Hz. All of it weighs 1.5 kg at 56 mm mounting depth, a very compact package for a 1.4" driver.
Use and enclosure
The minimum crossover is 1,200 Hz at 12 dB/octave. That makes the CDX14-2420 a candidate for two-way boxes with 12" mid-woofers, where a crossover between 1,200 and 2,000 Hz hands the cone's directivity over to the horn early. Actively with steep slopes you can use the 1,200 Hz; passively I advise some margin. The 106.5 dB is closer to the level of a good 12" cone than the louder drivers of the 1" range, which simplifies the crossover.
A 1.4" horn from Celestion is currently not listed at 42.audio; verified 1.4" horns in the shop are the 18Sound models XR1464C, XR1496C, XT1464, XG14 Alu, PR614 and H860 3D Print. Throat diameter matches; compare bolt pattern and mounting in the product data of both parts before buying. At 70 W AES a limiter belongs in the signal chain.
What to look out for
- 1.4" throat with 2.4" voice coil: lower crossover from 1,200 Hz possible.
- Neodymium, 1.5 kg: suitable for touring boxes.
- 106.5 dB at 8 Ω: less attenuation to the woofer needed than with louder drivers.
- 70 W AES / 140 W continuous, limiter recommended.
- Mounting depth 56 mm.
Frequently asked questions
Why is the sensitivity lower than on the 1" models?
The larger diaphragm with polyimide surround and the extended low-end response cost some efficiency, but you gain bandwidth downwards and power handling. In a two-way box with a 12" woofer that is better balanced than a louder driver, which would have to be attenuated anyway.
Can I adapt the driver to a 1" horn?
Mechanically possible with an adapter, acoustically not sensible: the throat step from 1.4" to 1" creates reflections and ripple in the response. Use a horn with a 1.4" interface.
Difference from the CDX14-3055?
The CDX14-3055 has a 3" voice coil, higher power handling and sensitivity and crosses from 800 Hz. The CDX14-2420, with 2.4" coil, 70 W AES and crossover from 1,200 Hz, is the more compact, less expensive option for lower continuous load.
Celestion CDX14-2420: manufacturer, spellings and classification
Celestion is the British loudspeaker manufacturer Celestion International Ltd. of Ipswich, England; its PA drivers are also known as Celestion Pro Audio. The CDX14-2420 is a 1.4-inch compression driver with neodymium magnet from the CDX series, available from 42.audio, Celestion dealer in Germany, with datasheet and full specifications in the driver database.
At 42.audio you get the CELESTION CDX14-2420 with all key data in the driver database. More drivers from this manufacturer: Atlas Celestion.
Specifications
| Allgemein | |
|---|---|
| Manufacturer | CELESTION |
| Category | Compression Driver |
| Series | CDX |
| Magnet | Neodymium |
| Impedance (Ω) | 8 |
| Power handling (W) | 70 |
| Sensitivity (dB) | 106.5 |
| Frequency from (Hz) | 800 |
| Frequency to (Hz) | 20000 |
| Abmessungen & Korb | |
|---|---|
| Diameter | 1.4 |
| Voice coil (inch) | 2.4 |
| Mounting depth (mm) | 56 |
| Weight (kg) | 1.5 |