GAI-Tronics PMA-300 Manuale - Pagina 10

Sfoglia online o scarica il pdf Manuale per Amplificatore GAI-Tronics PMA-300. GAI-Tronics PMA-300 14. 300 watt central amplifier

Model PMA-300 300 Watt Central Amplifier

Bridging of Amplifier Speaker Output Connection

If the distributed speaker system requires more than 300 watts out, bridging of multiple amplifiers'

speaker out connections in a parallel configuration is needed. The maximum total output power can be

increased in multiples of 300 watts. This is done by connecting the output of each amp required together

in parallel. See chart below and Figure 7 for some examples.

Speaker System's

Constant Voltage Value:

(as designed)

100V

100 V

70.7V

The following is a general formula to assist in determining # of amplifiers needed:

____ (Total wattage required)/300 (max. wattage per amp) = _____# of amplifiers needed

When wiring multiple amplifiers' SPEAKER OUT connections in a PARALLEL configuration, ensure

that the Speaker Out (+) of one amp is connected to the Speaker Out (+) of the second amp and the

Speaker Out (-) of one amp is connected to the Speaker Out (-) of the second amp, etc. Each amplifier

must use the same SPEAKER OUT voltage selection, either 70.7V or 100V connection. Refer to Figure

7 for more details.

Contact GAI-Tronics' Field Service Department at 800-492-1212 inside the USA or 610-777-1374

outside the USA for further information and assistance.

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Parallel Configuration Example Chart

Total System Output

Wattage Needed: (in

watts)

500

650

350

250

Figure 7. Bridging of Amplifiers

# of PMA-300

amplifiers (300 watt

ea.) required:

(If fraction, round up to next whole number)

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Pub.: 42004-667L2A