7
Figure 10. The curve above shows the delay variation of the 8331A
as a function of frequency.
SYSTEM SPECIFICATIONS
Lower cut-off frequency, –6 dB < 45 Hz
Upper cut-off frequency, –6 dB > 37 kHz
Accuracy of frequency response, ± 1.5 dB 58 Hz – 20 kHz
Maximum short term sine wave acoustic output on axis in half space, averaged from
100 Hz to 3 kHz at 1 m
≥ 104 dB SPL
Maximum long term RMS acoustic output in the same conditions with IEC weighted
noise (limited by driver protection circuit) at 1 m
99 dB SPL
Maximum peak acoustic output per pair in a listening room with music material at 1 m 110 dB
Self generated noise level in free space at 1 m on axis (A-weighted) ≤ 0 dB
Harmonic distortion at 85 dB SPL at 1 m on axis
Freq: 50…100 Hz
> 100 Hz
< 2 %
< 0.5 %
Drivers
Bass
Midrange
Treble
Dual 130 x 65 mm (5
1
/
8
x 2
5
/
8
in) oval cones
90 mm (3
1
/
2
in) cone (coaxial)
19 mm (
3
/
4
in) metal dome (coaxial)
Weight 6.7 kg (15 lb)
Dimensions
Height including IsoPod stand
Height without IsoPod
Width
Depth
305 mm (12 in)
285 mm (11
1
/
4
in)
189 mm (7
1
/
2
in)
212 mm (8
3
/
8
in)
Bass amplifier short term output power
Midrange amplifier short term output power
Treble amplifier short term output power
(Long term output power is limited by driver protection circuitry)
72 W
36 W
36 W
Amplifier system THD at nominal output <0.05%
Mains voltage 100-240 VAC 50/60 Hz
Power consumption
ISS active
Idle
Full output (short term)
< 0.5 W
4 W
60 W
AMPLIFIER SECTION
20k
50
100
200
500
1k 2k
5k
10k
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