digmoda DDC520, Руководство пользователя

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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