Tannoy B475 User Manual
Page 10
10
11. Technical Specifications
Frequency response (1) +/- 3dB
28Hz - 240Hz
Recommended Amplifier Power
400 - 800 Watt / 8
Ω
Power Handling
Average (2)
Programme
Peak (10ms)
300 Watt
600 Watt
1200 Watt
Sensitivity (1)
2.83 volt @ 1m
98dB
101dB (half space)
Maximum SPL (3)
Average
Peak
@ 1m
123dB
129dB
Impedance
Nominal
8
Ω
Minimum
7.8
Ω
Distortion
0.1 Full Power
2
nd
Harmonic
3
rd
Harmonic
100 Hz
0.22%
0.12%
250 Hz
0.23%
0.08%
0.01 Full Power
2
nd
Harmonic
3
rd
Harmonic
100 Hz
0.17%
0.23%
250 Hz
0.21%
0.29%
Driver Complement
1 x 18” High efficiency bass unit Type 4505
Crossover Point
Active: Recommended points
70-240 Hz, 24dB/octave, Linkwitz – Riley
(dependant on application)
Enclosure
168 litre, vented, 18mm multi-ply birch plywood
Finish
Textured black/grey paint
Protective Grille
Black Perforated Steel, with 50% free air-flow
Connectors
2 × Speakon™ NL4MP – in/out
Fittings
8 × M10 flying inserts
2
×
Man pullback point
2 × recessed carrying handles
1
×
pole mount socket
Dimensions
577mm (H) × 556mm (W) × 650mm (D)
22.7” (H) × 21.9” (W) × 25.6” (D)
Weight
40.0 kg (88 lbs)
NOTES:
(1) Average over stated bandwidth. Measured at 1m on axis, in an anechoic chamber.
(2) Long term power handling capacity as defined in EIA standard RS - 426A.
(3) Unweighted pink noise input, measured at 1m
Tannoy operates a policy of continuous research and development. The introduction of new materials or manufacturing
methods will always equal or exceed the published specifications which Tannoy reserve the right to alter without prior notice.
Please verify the latest specifications when dealing with critical applications