Connecting Multiple Speakers To The Audio Amp - Hall Technologies EMCEE200 User Manual

Connecting Multiple Speakers to the Audio Amp

The EMCEE200 audio amplifier card is designed to drive either 4-ohm or 8-ohm speaker loads,
depending on the setting indicated by the DIP switch. Connecting a larger load with less resistance
than indicated can result in an over-current shutdown of the amplifier, and possible damage to the card
itself. Using a smaller load such as 16 ohms is allowed but will result in less power delivery and a lower
overall volume level.
For larger rooms, it may be desirable to have more than two speakers connected to the amplifier.
Multiple speakers can be connected in series or parallel, provided the total load does not exceed the
amplifier's capacity.
For example, when using the 4-ohm setting, each channel may have two 8-ohm speakers connected in
parallel, or two 2-ohm speakers connected in series:
LEFT
Parallel Wiring: 8 ohms + 8 ohms = 4 ohms load per channel
LEFT
Series Wiring: 2 ohms + 2 ohms = 4 ohms load per channel
When using the 8-ohm setting, each channel may have two 16-ohm speakers connected in parallel, or
two 4-ohm speakers connected in series.
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