Nexo Alpha System - Manual (Page 25)

α α α
P 25
USER MANUAL
VERSION :1.01
DATE : 06/10/10
4.7. A LPHA EM / EF
SYSTEM SPECS
ALPHA EM ALPHA EF
Frequency Response [a]
220 Hz – 19 kHz ± 3 dB 40 Hz – 19 kHz ± 3 dB
Usable Range @-6dB [a]
180 Hz – 20 kHz ± 6 dB 38 Hz – 20 kHz ± 6 dB
Sensitivity 1W @ 1m [b] 107 dB SPL 107 dB SPL
Peak SPL @ 1m [b]
140 dB Peak
LF : 142 dB Peak
MF/HF : 140 dB Peak
Dispersion [c]
75° x 30° 75° x 30°
Directivity : Q & DI [c] Q = 25 – DI = 14 dB (Nominal f > 630 Hz) Q = 25 – DI = 14 dB (Nominal f > 630 Hz)
Cross-Over Frequency
MF/HF : 2.2 kHz (Passive)
LF/MF : 210 Hz (Active)
MF/HF : 2.2 kHz (Passive)
Nominal Impedance
8 ohms (7.5 min)
LF : 6 ohms (4.7 min)
MF/HF : 8 ohms (7.5 min)
Recommended Amplifiers
700 to 1000 Watts into 8 ohms
MF : 900 to 1400 Watts into 6 ohms
MF/HF : 700 to 1000 Watts into 8 ohms
FEATURES ALPHA EM ALPHA EF
Components
MF : 1 x 10" (24 cm) 8 ohms
HF : 1 x 3’’ Ceramic Driver, Titanium diaphragm
Coaxial mounted waveguide
LF : 1 x 18’’ (46cm) 6 Ohms Composite Curve
MF : 1 x 10" (24 cm) 8 ohms
HF : 1 x 3’’ Ceramic Driver, Titanium diaphragm
Coaxial mounted waveguide
Height x Width x Depth 400 x 689 x 754 mm Carpet version
(15 3/4" x 27 1/8 " x 29 11/16") 1200 x 689 x 754 mm Carpet version
(47 1/4" x 27 1/8 " x 29 11/16")
Shape
22.5° Trapezoid
Weight : Net
46.6 kg (99 Lb)
98 kg (209 Lb)
with wheelboard : 105 kg (231 Lb)
Connectors
2 x 8 poles Speakon (In / Out)
1+ & 1- (Sub-bass S2)
2+ & 2- (Bass B1)
3+ & 3- (MF/HF)
4+ & 4- (NC)
1 x 4 poles Speakon (to B1 & S2) 1+ & 1- (Sub-bass S2))
2+ & 2- (Bass B1)
Construction
Baltic Birch with Dark Grey carpeting, Structured Black coating painting finish also available.
Handles
2 Metal Bar Handles 4 Metal Bar Handles
Front Finish Acoustic Foam on hex perforated steel grid (77% transparent)
Flying points (optional) 4 Flying Tracks on front (7 positions on 2° steps)
Top to bottom Steel Backplate
4 Flying Tracks on Back (Hinge fixing)
Internal top to bottom Steel links
Painted version without Flying Tracks also available
Fixed Installation
The X-Bow Flying Tracks can also receive standard Aircraft Flying Fittings.
As part of a policy of continual improvement, NEXO reserves the right to change specifications without notice.
[a] Response Curves and Data : Anechoic Far Field above 200 Hz, Half-space Anechoic below 200 Hz.
Usable Range Data : Frequency Response Capability with TD crossover slopes removed.
[b] Sensitivity & Peak SPL : will depend on spectral distribution. Measured with band limited Pink Noise.
Refers to the specified +/- 3 dB range. Data are for Speaker + Processor + recommended amplifier combinations.
[c] Directivity Curves and Data : 1/3 octave smoothed frequency response, normalised to On-Axis response.
Data obtained by computer processing on off-axis response curves.