7
AMPLIFIER SECTION
Bass amplifier output power: 50 W
Treble amplifier output power: 50 W
Long term output power is limited by driver unit
protection circuitry.
Amplifier system distortion at nominal output:
THD < 0.05 %
Mains voltage: 100-240 V AC 50-60 Hz
Voltage operating range: ±10 %
Power consumption:
Idle 3 W
Standby in ISS mode <0.5 W
Full output 60 W
SYSTEM SPECIFICATIONS
Lower cut-off frequency, –6 dB: < 56 Hz
Upper cut-off frequency, –6 dB: > 25 kHz
Accuracy of frequency response:
62 Hz – 20 kHz (± 2.5 dB)
Maximum short term sine wave acoustic output on axis
in half space, averaged from 100 Hz to 3 kHz:
@ 1 m > 100 dB SPL
Maximum long term RMS acoustic output in same
conditions with IEC weighted noise (limited by driver unit
protection circuit): @ 1 m > 93 dB SPL
Maximum peak acoustic output per pair @ 1 m distance
with music material: > 107 dB
Self generated noise level in free field @ 1 m on axis:
< 5 dB (A-weighted)
Harmonic distortion at 85 dB SPL @ 1 m on axis:
Freq: 50…200 Hz < 3 %
>200 Hz < 0.5 %
Drivers: Bass 105 mm (4
in
) cone
Treble 19 mm (
3
/
4
in
) metal dome
Both drivers are magnetically shielded
Weight: 3.1 kg (6.8 lb)
Dimensions:
Height 226 mm (8
7
/
8
in)
Width 151 mm (6 in)
Depth 142 mm (5
5
/
8
in)
CROSSOVER SECTION
Input connector:
Balanced Euroblock 10 kOhm
Input level for 100 dB SPL output at 1 m:
-6 dBu at volume control max
Level control range relative to max output:
-40 dB (constantly variable)
Crossover frequency, Bass/Treble: 3.0 kHz
Treble Tilt control operating range:
0 to +2 dB @ 15 kHz
Bass Roll-Off control: –4 dB step @ 65 Hz
Bass Tilt control operating range in –2 dB steps:
0 to –6 dB @ 100 Hz
The ‘CAL’ position is with all tone controls set to ‘off’
and the input sensitivity control to maximum (fully
clockwise).
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