Harman Kardon DPR1005 Service Manual page 41

PR1005/DPR2005
D
3.7
The following graphs show the amplifier's performance. All inputs are driven with the same input signal, all outputs are mapped to
CONSUMER
their respective input with unit gain. The output channels are tested one at a time and only the output channel being measured has a
load. The other outputs are open.
3.7.1
Conditions: Typical supplies, Room temperature, 1W output power
+3
+2.75
+2.5
+2.25
+2
+1.75
+1.5
+1.25
+1
+0.75
+0.5
d
+0.25
B
r -0
-0.25
A
-0.5
-0.75
-1
-1.25
-1.5
-1.75
-2
-2.25
-2.5
-2.75
-3
FIGURE 3: Frequency Response
3.7.2
Conditions: Typical supplies, Room temperature, 1W output power
0.5
%
0.2
0.1
0.05
0.02
0.01
FIGURE 4: THD+N vs. Frequency
PER FORMANCE PLOTS
FREQUENCY RESPONSE AT 1W (8Ω LOAD)
20 50 100
THD+N VS. FREQUENCY (8Ω LOAD)
10
5
2
1
20 50 100
200 500 1k
Hz
200 500 1k
Hz
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harman/kardon
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GR70 Data Sheet Aug 26, 2003 v1.82
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