Master Audio
Xcellence Series.Ver 1.1
Nov 09
4
X-18W Subwoofer
- Self-powered
cabinet.
- 1500W amplifier for bass range.
- DSP with 48 bit bus and 28 bit filter coefficients.
- DSP Controls (parametrics, delay, volume and limiters).
- RJ45 output for control via computer.
- Overvoltage protection (>250V-400V).
- 18” speaker in neodymium, 4” voice coil and demodulation rings to reduce
distortion and the transitory response.
- Birch plywood construction.
- Varnished finish. Optional black textured paint finish: totally ecological.
- Frontal steel grille with acoustically transparent grey cloth.
2. XC Systems. Features
The X-12C &X-15C cabinet are ideal for a multitude of applications. They include
750W bi-amplification for the mid range woofer, 250W for the high range compression
driver and digital signal control by DSP. The manufacturer presets FACTORY,
NEARFIELD, SPEECH, MONITOR, and XOVER make it easy, flexible and user-
friendly.
In terms of its electro-acoustic qualities, the coaxial transducer gives a totally
symmetrical response free of null zones from polar lobbing effect. It comprises a 12”
or 15” woofer with a 3” voice coil and a compression driver with 3” voice coil and
titanium diaphragm.
The result is a clean, high quality sound whether for nearfield listening or at full power
in larger sites.
Thanks to its wedge shape it can be used as an onstage monitor, obtaining stable,
homogeneous response and coverage.
The upper and lower surfaces incorporate a pole mount socket for a standard 35mm
tripod, which at the same time allows for the use of a UBX hanging support (see
accessories).
2.1. Technical description
The XC cabinets come with DSP control, full range sound delivery thanks to their
direct radiation coaxial transducer and acoustic bass reflex cabinet. As a full range
system, its response is 58-18kHz (+/- 3dB) with a usable bandwidth between 50Hz-
20kHz (-10dB) for X-12C and 53Hz-18kHz (+/- 3 dB) with a usable bandwidth
between 45Hz-20kHz (-10dB) for X-15C.
It has 1000W continuous amplification (750W + 250W), thermal protection, anti-short
circuit protection at the output, maximum power limiters for each channel, and
protection against overvoltage. The DSP includes 5 presets which can be selected
either accessing the cabinet’s rear control panel or via the computer with RJ45
connection for the RS485 bus. The FACTORY preset gives a maximum flat response
in free field conditions; NEARFIELD has +3dB in high and low frequencies, -3dB in
