GAI-Tronics PMA-300 Handmatig - Pagina 6

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Model PMA-300 300 Watt Central Amplifier

Pub.: 42004-667L2A

Block Diagram

The block diagram for the PMA-300 Amplifier is shown below:

Figure 5. PMA-300 Block Diagram

The individual speaker's power level is determined by the tap settings on the proper V-matched line

matching transformer. Use of these transformers allows the speakers to be placed at long distances from

the amplifier without significant power loss. The number of speakers for a central amplifier system is

limited to the power available from the central amplifier.

The sum of the speaker power settings MUST NOT exceed the total power available from the amplifier.

For an example, a 300-watt central amplifier can drive approximately 40 speakers with drivers tapped at

7.5 watts each.

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