Extron electronics MPA 152 Guía de usuario descargar pdf (Pagina 16)

Setting Bass and Treble

Adjust the MPA 152 bass and treble as follows:

1. Use the Bass potentiometer to increase or decrease the bass shelving ±10 dB at 80 Hz

and below.

2. Use the Treble potentiometer to increase or decrease the treble shelving ±10 dB at

10kHz and above.

NOTE: Turning the Bass or Treble potentiometers counterclockwise will decrease the

output at the specified frequencies. Turning the potentiometers clockwise will increase

the output. When the potentiometer is in the center, flat response is achieved.

Remote Control Options

POWER

12V

3A MAX

OUTPUTS

4/8

Ohms

INPUTS

REMOTE

10V

VOL/MUTE

MPA 122 PLUS

LISTED 17TT

AUDIO/VIDEO

APPARATUS

Projector

8 ohm Ceiling

Speakers

in Parallel

VGA w/

Audio Cable

VCR

Composite

Audio RCA

Variable

Audio

Output

ComLink

IR Remote

Extron

MLC 104 IP

Controller

Extron

VCM 100 AAP

Volume/Mute Controller

Extron

MPA 152

Mini Power Amplifier

CONFIG

PROJECTOR

VOLUME

MLC 104 IP

OFF

MUTE

VOLUME

VCM 100 AAP

DVD

S-video

Audio RCA

Figure 8. Typical Application for the MPA 152, Using Remote Control

Using the IR remote for the projector — When using a projector with variable audio

outputs, connect the projector audio output to the MPA 152 audio input. Use the IR

remote for the projector to control the volume of the projector, which effectively controls

the volume of the MPA 152.

Extron volume controllers — Extron provides a range of volume and mute controllers

that offer a remote control option for use with a projector that lacks variable audio

outputs. These options control the MPA 152 volume directly. See page 7 for more

information about “Wiring for remote control.”

Using a MediaLink

Controller — For a projector with variable audio output, connect

the projector audio output to the MPA 152 audio input. Use a MediaLink controller to

adjust the volume of the projector via RS-232. MediaLink controllers can also use the IR

remote to adjust the volume of the projector and thus the input to the ampliﬁer.

MPA 152 • Setup and Operation 10

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