Master audio X208 - Page 7

Master Audio
Xcellence Line Array Series 208.Ver 1.2 Sep 12
7
Frec
(Hz)
4x
X-208
d
c
(m)
8x
X-208
d
c
(m)
12x
X-208
d
c
(m)
16x
X-208
d
c
(m)
100 Esférica Esférica Esférica 1.3
125 Esférica Esférica 0.7 2.2
250 Esférica 1.1 3 5.6
500 0.5 2.8 6.6 11.8
1k 1.4 5.9 13.3 23.8
2k 2.9 11.9 26.8 47.9
4k 5.9 23.9 54 95.9
8k 11.9 47.9 107.9 191.9
10k 14.9 59.9 134.9 239.8
Fig.6. d
c
Calculation
An 8-cabinet array has a near field extending to 12 metres at 2kHz. Beyond this
distance the wavefront will be spherical.
In the first zone (Fresnel), sound pressure loss is only 3 dB per doubling of distance,
whereas in the second zone (Fraunhofer) the loss is 6 dB. In long throw and high
SPL configurations it is very important to produce cylindrical waves.
Fig.7.Cylindrical wave (A) vs Spherical wave (B)
(A): -3 dB / doubling of distance
(B): -6 dB / doubling of distance
1.4. Features and appearance
X-208A
- Self-powered acoustic system.
- 2400W amplifier for low-mid range.
- 600W amplifier for mid-high range.
- 24-bit AD/DA converters with 112dB dynamic range, 96kHz sampling rate.
- DSP Controls (parametrics, delay, volume and limiters).
- Self amplifier diagnostics: output power, temperature, clipping.
- Ethernet connectivity.
- Overvoltage protection (>250V-400V).