Outputs - Dynacord DPA 4245 Owner's Manual

figure: block diagram input channel A
-6 -5
-4
-9
-3
-12
-2
-16
-1
-30
0 dB
LEVEL
INPUT ROUTING
DUAL/STEREO
PARALLEL/MONO
Power Outputs A&B
The loudspeaker cables are connected to the power amplifier through high-performance binding posts
– with the necessary screw-plugs being supplied. For connection purposes, it is possible to remove the 12-
pole terminal plug. Cables with a maximum diameter of 2.5 mm2 can be utilized. To provide flexible connec-
tions, all floating output voltages – 25 V, 70 V, and 100 V (ISOLATED OUTPUTS) – as well as the low-impe-
dance output (DIRECT OUTPUTS) of both channels are directly accessible.
Level Control
dB-scaled rotary controls for adjusting the power amplifier's overall
amplification. This control should be positioned between the 0 dB and
the -6 dB marks to prevent distortion in source devices. The labeling
indicates the actual attenuation applied to the internal specified factor
of amplification.
Input Routing
If the switch is set to parallel/mono, the input connectors CHANNEL
A and CHANNEL B are electrically linked for direct parallel operation.
With only a single audio signal source connected, both channels are
driven, while their volume levels are still individually controlled via the
level controls A and B.
If the switch is set to its dual/stereo position, channels A and B are se-
parately amplified (two channel or stereo mode).
AUDIO TRANSFORMER OUTPUTS
B
LOW IMPEDANCE
+
100V BRIDGED
1200W/8
+ 25V + 70V
B DUAL
+
600W
4
70 0 DIRECT OUTPUTS
100
ISOLATED OUTPUTS
figure: power outputs of the DPA 4260
20
figure: printed board assembly area
channel A – transformer retrofitting
A
+ +
100V
70V + 25V +
A
+
0 70 100