Inter-M MA-212U - Manual (Page 11)

PUBLIC ADDRESS AMPLIFIER
9 MA-206U/212U/224U
Connecting Speakers Connecting Speakers
Before connecting speakers to your MA-206U/212U/224U unit, be sure to disconnect the AC power cable.
Make certain that the total impedance is not less than the rated impedance indicated.
For 4Ω low impedance speakers, connect in parallel, with the positive (+) connectors to the 4Ω terminal
and the negative (-) connectors to the COM terminal.
For high impedance systems, connect with matching transformer as the following Figure. Be certain that
the total impedance does not equal less than the rated impedance.