Dynacord DPA 4245, DPA 4260 owner manual Level Control, Input Routing, Power Outputs A&B

figure: block diagram input channel A	figure: printed board assembly	area
	channel A – transformer retrofitting

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).

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.

figure: power outputs of the DPA 4260

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