APart MA60 [19/28] Instruction manual ma30 ma60

Instruction manualMA30 - MA60

The 4 ohm and 70 volt connectors are not used. Connect the

common or speaker line ground wire to the COM connector.

Connect the 100 volt line to the 100 volt connector.

The minimum speaker line impedance is 333 ohms (MA30) and

167 ohms (MA60).

Check the impedance with an impedance meter before connecting

the speaker line to the ampliﬁer.

Practical examples

a. Connecting the speakers

Example: 100 volt speaker line.

Connect the speaker line wires

as shown.

Note: never use more than one output at a time ! Do not overload

the speaker output. In 70 and 100 volt speaker lines, the power of

all speakers in the chain must be added. The total power MUST be

lower than or equal to the ampliﬁer’s output power. For example:

on a 240 watt 100 volt ampliﬁer, you can connect 4 x 60 watt

100 volt speakers in parallel: 4 x 60 = 240 watts.

Always measure the speaker line with an impedance meter or

speaker line watt meter