Nexo B1-18

PAGE 22/37
TECHNICAL SPECIFICATIONS
ALPHA SERIES USER MANUAL V1.0
DATE: 14/01/00 18:27
Alpha 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 wave guide
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 wave guide
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 wheel board: 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 Back plate
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.