SPEAKER WIRING AND CONFIGURATIONS
Speaker Load
Keep in mind your PowerBass Xtreme Class D amp is a high power amplifier and not a high current amplifier.
In other words it requires a minimum impedance of 1 ohm. Unless you are externally bridging two
XMA amplifiers in which case the minimum load is 2-ohms.
If you are unsure of calculating impedance
loads please consult your Authorized PowerBass Dealer before damaging your amplifier.
Lower impedance will send the amplifier into protection and possibly damage the electronics inside.
Note: Know your load before connecting speakers.
XMA-1205D SPEAKER OUTPUT CONFIGURATIONS
Speaker Wiring
Choose the correct speaker wire for your application. We recommend a minimum of 14 gauge wire. Route
these using the same precautions as you did when you ran the power cable. Terminate these wires at the
speaker end using insulated speaker terminals (not supplied) or by soldering the connection to the speaker. Be
certain to maintain correct polarity throughout the system. Make sure the speaker connections are positive-
to-positive and negative-to-negative. Most speaker wire has some indicator (color code, ribbing, or printing) on
one of the two wires to help you distinguish the positive (+) and negative (-) leads.
At the amplifier end, insert the stripped (bare) speaker wires into the properly marked terminals. Use an Allen
wrench to loosen the speaker terminals on the amplifier. Make certain that no bare wire ends touch each other.
Such contact could result in an electrical short and cause the amplifier to turn off (short circuit protection) or
malfunction.
NOTE:
It is highly recommended that an Allen wrench is used to tighten the set screws
in the terminal blocks by hand and NOT a power drill. This will prevent stripping or other
possible damage to the amplifier.
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