DAPAudio DSA-800 Guide de l'utilisateur télécharger pdf (Page 11)

Mode Selection

The three-position, recessed Mode Select switch (located on the rear panel) configures the amplifier for

either Stereo. Parallel or Bridged Mono Mode. Amplifiers are factory-configured for Stereo Mode.

Stereo Mode

In Stereo Mode, both channels operate independently, with their input attenuators controlling their

respective levels. Signal at Channel A's input produces output at Channel A's output while signal at

Channel B's input produces output at Channel B's output. Absolute minimum nominal load Impedance

for stereo operation Is 4 ohm per channel. Either the 1/4"(TRS) Input or the XLR Input may be used.

Parallel Mode

When set to Parallel Mode, a signal applied to Channel A's input will be amplified and appear at outputs

of both Channels A&B. Either the 1/4 " (TRS) input or the XLR input on Channel A may be used.

Bridged Mono Mode

Bridged Mono Mode straps both amplifier channels together to make a very powerful, single-channel

monaural amplifier. One channel "pushes" and the other "pulls" equally, doubling the power over that of

either channel alone. Signal is applied to the Channel A input only. Both attenuators are used to control

signal level; in addition, both must be adjusted to the same setting. Only channel A 1/4"(TRS) or XLR input

may be used.

NOTE: The channel B Input connectors {XLR and/ or TRS} maybe used to "loop thru" the channel A signal

When in parallel or bridged mono mode.

Use extreme caution when operating the amplifier In Bridged Mono Mode. Never ground either side of

the speaker cable when the amplifier Is in Bridged Mono Mode; both sides are "hot. "If an output patch

panel is used, all connections must be Isolated from each other and from the panel. The absolute

minimum nominal load Impedance in the Bridged Mono Mode Is 8 ohms, which Is the equivalent to

driving both channels separately at 4 ohms. Driving bridged loads of less than the recommended

minimums will activate the IGM circuitry, resulting in a loss of power, and may also lead to a thermal

protect condition. See figures on pages 10 showing output connection information.

Connecting amplifier outputs to oscilloscopes or other test equipment while the

amplifier is in bridged mode may damage both the amplifier and test equipment!

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DAPAudio DSA-800 Guide de l'utilisateur Page 11