Toa AC-120 Bedienungsanleitung

ELECTRONIC CONTROLLER AC-120

Instruction Manual

TOA Corporation

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Contents

User precautions

General description

Features

anel facilities

Connection

Block diagram

Specifications

Appearance

User Precautions

The AC-120 cannot be used for the following outdoor speaker (splash-proof) models of

the F-500 and F-600 series : F-500W , F-500W -L, F-600W , and F-600W -L.

To avoid severe electrical shocks, never open the unit nor touch its internal parts nor

insert hair pins, etc. into the unit.

Water in the unit can be extremely destructive and dangerous. If water does get into the

unit, make no further attempt to use the unit. Instead, switch the power OFF at once,

unplug the power cord from a wall outlet, and then inform your nearest TOA dealer.

To clean the unit's exterior, wipe with a soft damp cloth lightly soaked in water or a

neutral detergent. Never use thinner, benzine, or other solvents, which may discolor the

unit's surface.

General Description

The TOA AC-120 is an electronic controller designed for use with the F-120C ceiling

speaker. It can be used to enhance sound quality of the F-500 and F-600 series speaker

systems.

Features

1. Mountable in an EIA standard 19" rack. (1-unit size)

2. Electronically-balanced I/O jacks. ( in No.3 : HOT / No.2 : COLD / No.1 : GND)

3. Output for subwoofers.

4. A switch to cut low frequencies for the F-120C speaker.

— 2 —— 2 —

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Panel Facilities

Front anel

Rear anel

Low Cut Indicator (IN)

Lights when the low cut switch is pressed.

Power Indicator

Lights when the power is switched on.

Low Cut Switch (LOW CUT)

ressing this switch when the equalizer selection switch is set to "F-120C" position cuts

low frequencies.

Power Switch (POW R)

ress this switch

to turn power on. To turn power off, press this switch

again.

Ground Terminal

Be sure to ground the unit.

When other components are connected, a ground loop can be created, generating

hum. In such cases, remove a shorting piece.

Normally, use the unit with the shorting piece attached.

qualizer Selection Switch ( Q)

Set this switch to "F-120C" position if the F-120C speaker is connected, and to

"F-500/600 SERIES" position if the F-500 or F-600 speaker is connected.

Low Frequency Output Jack (LOW OUT)

This electronically-balanced jack connects to a subwoofer.

Cut-off frequency is 100Hz (Cut-off frequency slope —12dB/Oct).

Output Jack (OUTPUT)

This electronically-balanced jack connects to a power amplifier.

Input Jack (INPUT)

This electronically-balanced jack is an input for external equipment.

— 3 —

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Connection

No subwoofer is used.

Mixer/

reamplifier

Ch.1

Ch.2

Electronic

Controller

AC-120

Ch.1

Ch.2

ower Amplifier

Speaker

A subwoofer is used.

Mixer/

reamplifier

Ch.1

Ch.2

Electronic

Controller

AC-120

Ch.1

Ch.2

Low Out

ower Amplifier

Speaker

Subwoofer

Note

1. Set the equalizer selection switch (EQ) depending on the type of connected speakers.

2. The AC-120 cannot be used for the following outdoor speaker (splash-proof) models

of the F-500 and F-600 series : F-500W , F-500W -L, F-600W , and F-600W -L.

— 4 —

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Block Diagram

— 5 —

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Specifications

Power Requirements

Power Consumption

Distortion

Hum & Noise

Channel Input

Channel Output

Low Frequency Output

Low Frequency Cut

Finish

Dimensions

Weight

AC Mains, 50Hz/60Hz

Less than 0.05% ( + 4dB* 1kHz)

Less than –94dB* (20Hz~20kHz)

Rated input : +4dB*

electronically-balanced phone jack

Max. input level : +20dB*

Rated output : +4dB*

electronically-balanced phone jack

Max. output level : +20dB*

Rated output : +4dB*

electronically-balanced phone jack

Max. output level : +20dB*

Filter : Cutoff frequency slope 12dB/Oct 100Hz

6dB cut at 100Hz (F-120C used)

anel : Aluminum (colored Alumirite), black

482.6(W) X 44(H) x 297.5(D)mm [19.00" x 1.73" x 11.71"]

3.7kg [8.16 Ib.]

0dB = 0.775V RMS

Specifications are subject to change without notice.

Accessories :

Instruction manual

Warranty card (for USA and Canada only)

— 6 —

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Appearance

Unit : mm(in)

— 7 —

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TOA Corporation

KOBE, JA AN

133-12-080-80

All manuals and user guides at all-guides.com

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