Connecting To An Amplifier; System Configurations - Martin Audio EM Series User Manual

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Connections are made via stripped wires to avoid the need for soldered

connectors. The EM15 is provided with two spring-loaded terminals on the

rear of the enclosure and the EM150 is provided with two pairs of 4mm

screw terminals – a pair for each 10"(250mm) driver.

For mono EM150 operation these should be connected together externally

in parallel: left Red (+) to right Red (+), left Black (-) to right Black (-). The

paralleled mono impedance is 4 ohms. For stereo operation, separate

connections should be made to the EM150's left and right terminals. The

impedance in this case is 8 ohms left and 8 ohms right.

Note: It is important to maintain consistent polarity throughout i.e. Red to

Red, Black to Black.

The basic system configuration for one EM150 and up to six EM15's is

shown in Fig 2. Up to three EM15's (each in 16 ohm configuration) are

wired in parallel with the respective left and right inputs of the EM150, and

driven from the left and right channels of the power amplifier. This

arrangement presents a 3 ohm load to each amplifier channel. Alternatively,

one EM150 may be used with a pair of EM26's, presenting a 4 ohm load to

the amplifier.

Fig 2

FROM PRE-AMP

16 ohm 16 ohm 16 ohm

CONNECTING TO AN AMPLIFIER

8 ohm

LEFT CHANNEL

Martin Audio – EM SERIES

AMP

16 ohm 16 ohm 16 ohm

8 ohm

RIGHT CHANNEL

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Em15 Em150