Dynacord Power Amplifier DPA 4260 Manuel du propriétaire - Page 6
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figure: block diagram input channel A
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
connections, all floating output voltages – 25 V, 70 V, and 100 V (ISOLATED OUTPUTS) – as well as the
low-impedance output (DIRECT OUTPUTS) of both channels are directly accessible.
Level Control
dB-scaled rotary controls for adjusting the power amplifier's overall ampli-
fication. 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
separately amplified (two channel or stereo mode).
figure: power outputs of the DPA 4260
20
figure: printed board assembly area
channel A – transformer retrofitting