4
11. Noise interference
-
U(F) = external voltage un-weighted with B = 22 Hz … 22 kHz, effective value (IEC 268-1)
-
U(G) = noise voltage, frequency-weighting filter according to CCIR-468-3, quasi peak weighted (IEC 268-
1)
-
U(A) = interference voltage A-weighted, dB(A), effective value (IEC 268-1)
- Signal-to-noise ratio referring to maximum output voltage at 4
Ω
and A-weighted interference voltage
power amp output
U(F)
dBu
U(G)
dBu
U(A)
dBu
GAIN
dB
INPUT(A)
dBu
S/N-R.
dB
remark
Force
SPEAKER
OUT A&B
-66.2
-55.2
-68.2
34
-102.2
103
INPUT A&B
R(Q) = 50
Ω
Eliminator
SPEAKER
OUT A&B
-65
-54
-67
35
-102
103
INPUT A&B
R(Q) = 50
Ω
Force
SPEAKER
OUT A&B
-68.2
-57.2
-70.2
/
/
/
INPUT A&B
R(Q) = 50
Ω
Eliminator
SPEAKER
OUT A&B
-68
-57
-70
/
/
/
INPUT A&B
R(Q) = 50
Ω
12.
Dimensions and weight
power amplifier
weight
dimensions in mm
Force
15kg
483 x 132.5 x 385.5
Eliminator
16kg
483 x 132.5 x 385.5