CH A1 - 3.4.4 Passive Bi-Amplification Mode; 3.4.5 Active Bi-Amplification Mode

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Monaural mode

3.4.4 Passive bi-amplification mode

A pair of A1s, each with a single analog input board installed, can be used in passive bi-amplification mode. In such a case, each

output board of each A1 feeds the speaker's drivers of a given frequency range. The main advantage of this configuration is the

possibility to set optimal global/local feedback ratio for the different frequency bands. The picture below shows how the A1s should

be connected in this case.

Passive bi-amp mode

3.4.5 Active bi-amplification mode

A pair of A1s, each with two analog input boards installed, can be used in active bi-amplification mode. In such a case, each output

board of each A1 feeds the speaker's drivers of a given frequency range. This configuration is optimal when an active crossover

network is used. Optimal global/local feedback ratio can be set for the different frequency bands. The picture below shows how

they should be connected in this case.

Rev 2.0 A1 User Manual 21

C1 D/A Controller

A1 Left Mono Power Amplifier

Left Speaker Binding Post

Right Speaker Binding Post

Balanced XLR cables