Appendices
DDC552
Audio Specifications
Parameter
Conditions
Min Typ
Max
Unit
THD+N in 4Ω
(AES17 filter)
f = 40Hz, Po = 1W
-
0.009
0.011
%
f = 500Hz, Po = 1W
-
0.025
0.031
f = 1KHz, Po = 1W
-
0.019
0.024
THD+N in 8Ω
(AES17 filter)
f = 40Hz, Po = 1W
-
0.007
0.009
f = 500Hz, Po = 1W
-
0.016
0.020
f = 1KHz, Po = 1W
-
0.013
0.016
Max THD+N in 4Ω
(AES17 filter) -10dBFS
f = 40Hz
-
0.006
0.008
%
f = 500Hz
-
0.008
0.010
f = 1KHz
-
0.010
0.013
Max THD+N in 8Ω
(AES17 filter) -10dBFS
f = 40Hz
-
0.006
0.008
f = 500Hz
-
0.008
0.010
f = 1KHz
-
0.010
0.013
THD+N Low Level in 4Ω
f = 40Hz, 100mW
0.02
%
f = 500Hz, 100mW
0.04
f = 1KHz, 100mW
0.07
THD+N Low Level in 8Ω
f = 40Hz, 100mW
0.02
f = 500Hz, 100mW
0.04
f = 1KHz, 100mW
0.05
Nominal Voltage Gain (A
v
)
f = 40Hz
29.92
dBV
f = 500Hz
29.97
f = 1KHz
29.98
Frequency Response
(Po = 1W)
20Hz - 100Hz
-
+/-
0.5
+/-
1
dB
100Hz - 2KHz
-
+/-
0.5
+/-
1
2KHz - 20KHz
-
+/-
0.5
+/-
1
Common Mode Rejection (CMR) 20Hz - 20KHz
-55
dB
Signal to Noise Ratio in 4Ω
(SNR)
0dB = 1% THD, 40Hz
-135
dB
0dB = 1% THD, 500Hz
-125
0dB = 1% THD, 1KHz
-110
Signal to Noise Ratio in 8Ω
(SNR)
0dB = 1% THD, 40Hz
-136
0dB = 1% THD, 500Hz
-125
0dB = 1% THD, 1KHz
-105
Input Impedance (Z
in
)
Unbalanced
18K
Ω
Balanced
36K
Input Sensitivity in 4Ω
(Balanced) (V
in
)
f = 40Hz, 500W
1.43
Vrms
f = 500Hz, 500W
1.42
f = 1KHz, 225W
0.99
Input Sensitivity in 8Ω
(Balanced) (V
in
)
f = 40Hz, 250W
1.42
f = 500Hz, 250W
1.40
f = 1KHz, 112W
0.95
DC Output Offset in 4Ω (DC
off
)
Low channel
3.0
mVrms
Mid channel
3.3
High channel
4.3
DC Output Offset in 8Ω (DC
off
)
Low channel
9.5
Mid channel
4.0
High channel
4.3
Input Clipping (Vin
clip
)
f = 1KHz
12
dBu
I. DDC552 Specifications
