2
F.
FREQUENCY RESPONSE
• -3 dB level drop, referenced to the level at the standard frequency of 1 kHz
• the power amplifier's border frequencies are at 13 Hz and 40 kHz respectively, referenced to -1 dB
Amplification frequency response
Input
Output
f (u)
f (o)
Remarks
INPUT A/B
SPEAKER A/B
<10 Hz
75 kHz
HI-LO-CUT Off
INPUT A/B
SPEAKER A/B
20 Hz
35 kHz
HI-LO-CUT On
Distortion-limited transmission range (performance bandwidth)
•
THD = 0.1 %, 1/2 nominal power at 4 ohms, MBW = 500 kHz
Input
Output
f (u)
f (o)
Remarks
INPUT A/B
SPEAKER A/B
<10 Hz
50 kHz
HI-LO-CUT Off
G.
PHASE RESPONSE
±30° (20 Hz - 20 kHz, HI/LO-CUT off)
H.
INPUT IMPEDANCE
20 k
Ω
(20 Hz … 20 kHz)
I.
AMPLITUDE NON-LINEARITY
Amplitude non-linearity
Remarks
nominal overall distortion
<0.05 %
MBW = 80 kHz, f = 1 kHz
standard overall distortion
<0.02 %
MBW = 80 kHz, f = 1 kHz
IMD-SMPTE
<0.01 %
60 Hz, 7 kHz
DIM 30
<0.01 %
3.15 kHz, 15 kHz
DIM 100
<0.01 %
3.15 kHz, 15 kHz
J.
CROSSTALK
- at f = 1 kHz
less than
<-70 dB
K.
DAMPING FACTOR
- internal at f = 1 kHz
>300
at f = 100 Hz
>400
L.
SLEW RATE
- internal
>35 V/µs
M.
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 referenced to a nominal output voltage of 55.6 V (800W/4ohms)
-
HI/LO-CUT ON, GND LIFT = GROUNDED
Interference
output voltage
S/N ratio
Equivalent input
interference
voltage
Equivalent input
interference level
Residual
interference
output voltage
U(F)
< 550µV
> 100 dB
< 7.5µV
< -100 dBu
< 350µV
U(G)
< 1.84 mV
> 89.7 dB
< 25µV
< -89.7 dBu
< 1.23mV
U(A)
i.s.=0dBu
< 440µV
> 102 dB
< 6µV
< -102 dBu
< 320µV
U(A)
i.s.=6dBu
< 220µV
> 108 dB
< 6µV
< -102 dBu
< 160µV
U(A)
Gain=26dB
< 120µV
> 113.5 dB
< 6µV
< -102 dBu
< 90µV
The S/N ratio (A-weighted) at max. output voltage at 4
Ω
is >103 dB.
