Meyer Sound MM-10 Manuel d'utilisateur télécharger pdf (Page 32)

CHAPTER 5: MM-10ACX SUBWOOFER

NOTE: The Input Select switch is only included

on the MM-10ACX model. The switch only

affects the subwoofer signal and has no effect on the

Satellite Outs.

Input Select Switch and Summing

When the Input Select switch is in the up position (SUM

CH 1 + 2), the source signal that is routed to the subwoofer

from the Satellite Audio Ins is attenuated.

■ If audio signals are present at both Satellite Audio Ins,

the signal is summed and attenuated by 6 dB, resulting

in a net gain of 0 dB.

■ If only a single audio signal is present at one of the Satel-

lite Audio Ins, the signal is also attenuated by 6 dB. But

this time the result is a net gain of -6 dB.

MM-10ACX GAIN KNOB

The Gain knob adjust the subwoofer signal from completely

attenuated to +10 dB and can be used to the balanced the

subwoofer output with that of the satellite loudspeakers.

The Gain knob is always active, regardless of the Input

Select switch setting.

NOTE: The Gain knob is only included on the

MM-10ACX model. The knob only affects the

subwoofer signal and has no effect on the Satellite

Outs.

MM-10ACX INPUT POLARITY SWITCH

The Input Polarity switch swaps the polarity of the audio

source signal, which is sometimes necessary to acoustically

align the subwoofer with other loudspeakers in the system.

When the switch is in the up (+) position, pin 2 is hot relative

to pin 3, resulting in a positive pressure wave when a posi-

tive signal is applied to pin 2. When the switch is in the

down (–) position, pin 3 is hot relative to pin 2, resulting in a

positive pressure wave when a positive signal is applied to

pin 3.

NOTE: The Input Polarity switch only affects

the subwoofer signal. It has no effect on the

Satellite Outs.

MM-10ACX LIMIT LED

The MM-10ACX has a three-color Limit LED on its rear panel

that changes color to indicate the subwoofer’s status.

Powering On (Green)

When powering up the MM-10ACX subwoofer, the following

startup events occur and are indicated by the Limit LED:

1. The LED flashes green and then yellow during power up.

2. The LED turns solid green indicating the subwoofer is

ready to reproduce audio.

MM-10ACX Gain Knob

MM-10ACX Input Polarity Switch

MM-10ACX Limit LED

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 55 56

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Meyer Sound MM-10 Manuel d'utilisateur Page 32

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