Celestion has launched the CDX1-1070 and CDX20-3020 ferrite magnet compression drivers.
Developed at Celestion’s UK HQ, theCDX1-1070 is a 25mm/1-inch exit compression driver. Driven by a 25mm/1-inch copper clad aluminium voice coil, this device provides 12W (rms) power handling and 106dB sensitivity across a frequency range of 1.5–20kHz. It features a single-piece PETP diaphragm and surround, held in place by a precision aluminium carrier for consistent and reliable performance, and a smooth frequency response.
This lightweight, ferrite magnet device is fabricated using a rigid engineering thermoplastic with a standard 2xM6 bolt fitting. Acoustic foam is utilised to minimise internal air cavity resonances, dampening unwanted reflections from the inside of the cover.
The CDX1-1070 magnet assembly and overall acoustic design have been optimised using FEA (Finite Element Analysis) modelling techniques, to deliver a much smoother frequency response than many comparable drivers on the market.
Purpose-built for compact two-way systems, CDX1-1070 has been made available at an exceptionally cost-competitive price point, making Celestion compression driver technology even more accessible to reinforcement system builders.
With a 3-inch copper clad aluminium voice coil driving a titanium diaphragm, the CDX20-3020 2-inch exit, ferrite magnet compression driver delivers 75W (rms) power handling and 107dB sensitivity across a 500Hz–18kHz frequency range. The driver’s recommended minimum crossover frequency (at 12dB/octave) is 1kHz.
Like other CDX compression drivers in the range, CDX20-3020 makes extensive use of Celestion’s industry-leading experience in Finite Element Analysis (FEA) to optimise magnetic and acoustic design, helping the device to achieve high performance at a competitive price point. It also uses Celestion’s next-generation Sound Castle diaphragm clamping assembly to ensure even clamping pressure on the diaphragm surround, while actively reducing stress on the diaphragm during operation. This contributes to lower distortion while enabling the full internal volume of the rear cover to act as a loading chamber for the diaphragm, resulting in superior mid-band response.
With optimal heat management, plus an edge-wound coil copper-clad aluminium voice coil the CDX20-3020 is a high-performance HF option for a wide variety of larger format sound reinforcement applications.
According to Celestion’s Head of Engineering, Paul Cork, ‘it brings together the best elements of technology used in the most successful products of our CDX range. The design extracts the maximum performance from a unit that is surprisingly compact for a 2-inch exit device’.
More: www.celestion.com
