Manual Monacor STA-300D (page 6 of 20) (English, German, Dutch, Danish, French, Italian, Polish, Swedish, Spanish, Finnish)

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English

R-CH L-CH

PROT

0 10

CLIP

SIGNAL

POWER

0 10

STA-500D

DIGITAL STEREO PA AMPLIFIER

600 W

1 2 3 4 5 6 2

2 1

PUSH

2 1

PUSH

INPUT

RIGHT LEFT

STEREO

BRIDGE

MODE

OFF

LIMITER

+ TIP / PIN 2

– RING / PIN 3

SLEEVE / PIN 1

FUSE

230 V~ /

50 Hz

LEFTRIGHT

OUTPUT

MIN. LOAD 4 Ω

+ TIP

– RING

+ TIP

– RING

+ TIP / PIN 2

– RING / PIN 3

SLEEVE / PIN 1

7 8 9 10 8 9 11 12 11 13 14

•

The heat produced inside the unit must

be dissipated by air circulation; therefore,

never cover the air vents of the housing.

•

Do not operate the unit and immediately

disconnect the mains plug from the socket

if the unit or the mains cable is visibly

damaged,

2. if a defect might have occurred after the

unit was dropped or suffered a similar

accident,

3. if malfunctions occur.

In any case the unit must be repaired by

skilled personnel.

•

Never pull the mains cable for disconnect-

ing the mains plug from the socket, always

seize the plug.

•

For cleaning only use a dry, soft cloth; never

use water or chemicals.

•

No guarantee claims for the unit and no li-

ability for any resulting personal damage or

material damage will be accepted if the unit

is used for other purposes than originally

intended, if it is not correctly connected

or operated, or if it is not repaired in an

expert way.

If the unit is to be put out of oper-

ation deﬁnitively, take it to a local

recycling plant for a disposal which

is not harmful to the environment.

4 Installation into a Rack

The ampliﬁer is designed for installation into a

rack (482 mm /19”); 1 rack space (44.45 mm)

is required. To prevent the rack from becom-

ing top-heavy, insert the ampliﬁer into the

lower section of the rack. The front plate is

not sufﬁcient for ﬁxing the ampliﬁer safely;

additionally use lateral rails or a bottom plate

to secure the ampliﬁer.

To ensure sufﬁcient cooling, air must be

able to ﬂow freely through all air vents of the

ampliﬁer. The hot air given off by the ampliﬁer

must be dissipated from the rack; otherwise,

heat will accumulate in the rack which may

not only damage the ampliﬁer but also other

units in the rack. In case of insufﬁcient heat

dissipation, install a ventilation unit into the

rack.

Stereo PA Ampliﬁer

These instructions are intended for users with-

out speciﬁc technical knowledge. Please read

these instructions carefully prior to operating

the unit and keep them for later reference.

1 Operating Elements and

Connections

1 POWER switch

Volume controls, one each for the left and

right channels

Signal indicators SIGNAL (depending on

the setting of the volume control), one

each for the left and right channels

4 Power indicator ON

LED PROT, will light up when the protection

circuit is activated and for a few seconds

after the ampliﬁer has been switched on

6 Overload LEDs CLIP, one each for the left

and right channels

7 Switch MODE for the operating mode

disengaged: 2-channel mode STEREO

engaged: bridge mode BRIDGE

XLR inputs to connect an audio source

with line signal level (e. g. mixer), one each

for the left and right channels

2 1

PUSH

1 Ground

Signal +

3 Signal −

6.3 mm jacks, one each for the left and right

channels, to connect an audio source, as an

alternative to the corresponding XLR jack

2 3 1

The contacts are connected in parallel to

the contacts of the XLR jack (8)

Switch LIMITER for the automatic level

limiter

disengaged: level limiter off

engaged: level limiter on

6.3 mm jacks, one each for the left and

right channels, to connect a speaker

+ −

Speaker jacks (Speakon

compatible), con-

nected in parallel to the 6.3 mm jacks (11)

Pin conﬁguration:

2−

1−

OUTPUT LEFT RIGHT

L + R +

1− L − R −

2+ R + —

2−

R − —

Please also refer to chapter 5.2.

Support for the mains fuse

Always replace a blown fuse by one of

the same type.

Mains jack for connection to a socket

(230 V~/ 50 Hz) via the mains cable sup-

plied

2 Applications

This stereo PA ampliﬁer is designed for PA

applications at events, e. g. performances on

stage. It provides a switchable level limiter

to reduce distortions at high volumes and to

protect the speakers. In addition, it is possible

to switch to the monophonic bridge mode to

obtain higher output power.

Designed as a class D ampliﬁer and fea-

turing a switch-mode power supply, the

ampliﬁer is both compact and light. The am-

pliﬁer is protected against short-circuit and

overheating.

3 Safety Notes

The unit corresponds to all relevant directives

of the EU and is therefore marked with .

WARNING

The unit uses dangerous

mains voltage. Leave servicing

to skilled personnel and do

not insert anything into the

air vents; inexpert handling

may result in electric shock.

•

The unit is suitable for indoor use only. Pro

tect it against dripping water and splash

water, high air humidity and heat (admis-

sible ambient temperature range 0 – 40 °C).

•

Do not place any vessels ﬁlled with liquid

on the unit, e. g. a drinking glass.

English

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Monacor STA-300D Manual

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