Bosch Appliances PLE-2MA240-US, PLE-2MA120-US User Manual

Plena Mixer Amplifier

Installation and User Instructions

PLE-2MA120-US

PLE-2MA240-US

Plena Mixer Amplifier | Installation and User Instructions | Important safeguards en | 2

Important safeguards

Alerts on the apparatus

This symbol found on the apparatus indicates hazards arising from dangerous voltages.

This symbol found on the apparatus indicates the user should read all safety statements found in the operating instructions.

This symbol found on the apparatus indicates double insulation.

Warning

To reduce the risk of fire or electrical shock, do not expose this apparatus to rain or moisture.

This symbol found on the apparatus indicates that the apparatus must be placed in a separate collection facility for electronic waste and not disposed with household waste.

1 Read instructions - All the safety instructions for use

should be read before the system is operated.

2 Retain instructions - The safety instructions and

operating instructions should be retained for future reference.

3 Heed warnings - All warnings on the unit and in the

operating instructions should be adhered to.

4 Follow instructions - All operating instructions and

instructions for use should be followed.

5 Cleaning - Unplug system units from the mains

outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use only a dry cloth for cleaning.

6 Attachments - Do not use attachments not

recommended by the product manufacturer as they may cause hazards.

7 Water and Moisture - Do not use this unit near water,

for example near a bathtub, washbowl, kitchen sink, or laundry basket, in a wet basement, near a swimming pool, in an unprotected outdoor installation or any area which is classified as a wet location.

8 Accessories - Do not place this unit on an unstable

stand, tripod, bracket or mount. This unit may fall, causing serious injury to a person and serious damage to the unit. Use only a stand, tripod, bracket or mount recommended by the manufacturer, or sold with the product. Any mounting of the unit should follow the manufacturer's instructions, and should use a mounting accessory recommended by the manufacturer. An appliance and cart combination should be moved with care. Quick stops, excessive force, and uneven surfaces may cause the appliance and cart combination to overturn.

9 Ventilation - Openings in the enclosure, if any, are

provided for ventilation and to ensure reliable operation of the unit and to protect it from overheating. These openings must not be blocked or covered. The unit should not be placed in a built-in installation unless proper ventilation is provided or the manufacturer's instructions have been adhered to. Maintain a minimum distance of 2 inch (50 mm) around the front, the rear, and the sides of the unit for sufficient ventilation.

10 Heat sources - Do not install the unit near any heat

sources such as radiators, stoves, or other apparatus that produce heat (including amplifiers).

11 Open flames - No open flames, such as lighted

candles, should be placed on the unit.

12 Power sources - Units should be operated only from

the type of power source indicated on the marking label. If you are not sure of the type of power supply you plan to use, consult your appliance dealer or local power company. For units intended to operate from battery power, or other sources, refer to the "Installation and User Instructions".

13 Grounding or polarisation - This unit may be

equipped with a polarised alternating current line plug (a plug having one blade wider than the other). This plug will fit into the power outlet only one way. This is a safety feature. If you are unable to insert the plug fully into the outlet, try reversing the plug. If the plug still fails to fit, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the polarised plug. Alternatively, this unit may be equipped with a 3-wire grounding type plug having a third (grounding) pin. This plug will only fit into a grounding-type power outlet. This is a safety feature. If you are unable to insert the plug into the

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Plena Mixer Amplifier | Installation and User Instructions | Important safeguards en | 3

outlet, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the grounding-type lug.

14 Power-Cord Protection - Power supply cords should

be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords and plugs, convenience receptacles, and the point where they exit from the appliance.

15 Overloading - Do not overload outlets and extension

cords as this can result in a risk of fire or electrical shock.

16 Object and Liquid Entry - Never push objects of any

kind into this unit through openings as they may touch dangerous voltage points or short-out parts that could result in a fire or electric shock. Never spill liquid of any kind on the unit.

17 Servicing - Do not attempt to service this unit

yourself as opening or removing covers may expose to dangerous voltage or other hazards. Refer all servicing to qualified service personnel.

18 Damage Requiring Service - Unplug the unit from

the outlet and refer servicing to qualified service personnel under the following conditions:

• When the power-supply cord or plug is damaged.

• If liquid has been spilled, or objects have fallen into the unit.

• If the unit has been exposed to rain or water.

• If the unit does not operate normally by following the instructions for use. Adjust only those controls that are covered by the instructions for use, as an improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the units to their normal operation.

• If the unit has been dropped or the unit has been damaged.

• When the unit exhibits a distinct change in performance; this indicates a need for service.

19 Replacement Parts - When replacement parts are

required be sure the service technician has used replacement parts specified by the manufacturer or parts which have the same characteristics as the original part. Unauthorised substitutions may result in fire, electric shock or other hazards.

20 Safety Check - Upon completion of any service or

repairs to the units, ask the service technician to

perform safety checks to determine that the unit is in proper operating condition.

21 Lightning - For added protection of the units during

a lightning storm, or when it is left unattended and unused for long periods of time, unplug it from the wall outlet and disconnect the cable system. This will prevent damage to the unit due to lightning and power-line surges.

22 Disconnection - To completely disconnect this unit

from the AC mains, disconnect the power supply cord plug from the AC receptacle. The mains plug of the power supply cord shall remain readily operable to be able to disconnect power from the unit.

23 Before installing or operating this product, always

read the Safety Instructions, which are available as a separate document (9922 141 7014x). These instructions are supplied together with all equipment that can be connected to the mains.

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Plena Mixer Amplifier | Installation and User Instructions | Important safeguards en | 4

American Users

Note

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment OFF and ON, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and the receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

Canadian Users

Note

This Class B digital device complies with Canadian ICES-003. Cet appareil numérique de classe B est conforme à la norme NMB-003 du Canada.

Thank you for choosing a Bosch Security Systems product!

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Plena Mixer Amplifier | Installation and User Instructions | Table of contents en | 3

Table of contents

Important safeguards ...................................................................................................................................................2

Table of contents ...........................................................................................................................................................3

1. Introduction ....................................................................................................................................................................5

1.1 Purpose .....................................................................................................................................................................................5

1.2 Digital document .....................................................................................................................................................................5

1.3 Intended audience ..................................................................................................................................................................5

1.4 Related documentation ..........................................................................................................................................................5

1.5 Alerts ..........................................................................................................................................................................................5

1.6 Icons ...........................................................................................................................................................................................5

1.6.1 Note icons ...........................................................................................................................................................................5

1.6.2 Caution, Warning, and Danger icons ...........................................................................................................................5

1.7 Conversion tables ...................................................................................................................................................................6

2. Description .....................................................................................................................................................................7

2.1 The Plena product range .......................................................................................................................................................7

2.2 Contents of box .......................................................................................................................................................................7

2.3 The Plena Mixer Amplifier ......................................................................................................................................................7

2.4 Controls, connectors and indicators ..................................................................................................................................9

2.4.1 Front panel ..........................................................................................................................................................................9

2.4.2 Plena PLE-WP2Z3S wall panel .....................................................................................................................................9

2.4.3 Rear panel ........................................................................................................................................................................ 10

3. Installation ................................................................................................................................................................... 13

3.1 Unpack unit ............................................................................................................................................................................13

3.2 Install unit in rack (optional) ............................................................................................................................................... 13

3.3 Check settings/connections .............................................................................................................................................. 13

3.4 Connect unit to mains ......................................................................................................................................................... 13

4. Connections and settings ........................................................................................................................................ 15

4.1 Connecting inputs ................................................................................................................................................................15

4.1.1 DC supply (battery) ........................................................................................................................................................15

4.1.2 Priority microphone (input 1) .......................................................................................................................................16

4.1.3 Secondary microphone (input 2) ................................................................................................................................17

4.1.4 Additional microphones (inputs 3 through 6) ..........................................................................................................17

4.1.5 Emergency inputs ...........................................................................................................................................................18

4.1.6 Music source inputs ....................................................................................................................................................... 20

4.2 Connecting outputs .............................................................................................................................................................21

4.2.1 Zone 1 and 2 ...................................................................................................................................................................21

4.2.2 Call only ............................................................................................................................................................................ 21

4.2.3 Music only ........................................................................................................................................................................21

4.2.4 Line out/ loop through ...................................................................................................................................................21

4.2.5 Connecting speakers ..................................................................................................................................................... 22

4.3 Unit settings ..........................................................................................................................................................................23

4.3.1 Rear panel settings ........................................................................................................................................................ 23

4.3.2 Pin settings and labelling ..............................................................................................................................................25

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5. Operation ..................................................................................................................................................................... 27

5.1 Switch on and off ................................................................................................................................................................. 27

5.1.1 Switch on .........................................................................................................................................................................27

5.1.2 Switch off .........................................................................................................................................................................27

5.2 Microphone/line controls ....................................................................................................................................................28

5.3 Music controls .......................................................................................................................................................................28

5.3.1 Source selection ............................................................................................................................................................. 28

5.3.2 Volume control ................................................................................................................................................................ 28

5.4 Tone control ..........................................................................................................................................................................28

5.4.1 Introduction ...................................................................................................................................................................... 28

5.4.2 Microphone/line tone control ....................................................................................................................................... 28

5.4.3 Music tone control .......................................................................................................................................................... 28

5.5 Output controls .....................................................................................................................................................................29

5.5.1 Zone selection ................................................................................................................................................................. 29

5.5.2 Master volume control ...................................................................................................................................................29

6. Technical data ............................................................................................................................................................. 31

6.1 Electrical ................................................................................................................................................................................. 31

6.1.1 Mains power supply .......................................................................................................................................................31

6.1.2 Battery power supply .....................................................................................................................................................31

6.1.3 Power consumption .......................................................................................................................................................31

6.1.4 Performance ....................................................................................................................................................................31

6.1.5 RJ-45 input 2 x ................................................................................................................................................................31

6.1.6 Mic/line input 6 x ............................................................................................................................................................. 31

6.1.7 Music inputs 3x ............................................................................................................................................................... 32

6.1.8 Emergency / telephone 1 x ..........................................................................................................................................32

6.1.9 Loop through insert 1 x .................................................................................................................................................32

6.1.10 Master/music output 1 x ...............................................................................................................................................32

6.1.11 Loudspeaker outputs 70 V, 25 V* ..............................................................................................................................32

6.1.12 Loudspeaker output 4 Ohm* ....................................................................................................................................... 32

6.2 Mechanical ............................................................................................................................................................................. 32

6.3 Environmental ........................................................................................................................................................................ 32

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Plena Mixer Amplifier | Installation and User Instructions | Introduction en | 5

1 Introduction

1.1 Purpose

The purpose of these Installation and User Instructions is to provide information required for installing, configuring and operating a Plena Mixer Amplifier.

1.2 Digital document

These Installation and User Instructions are also available as a digital document in the Adobe Portable Document Format (PDF).

1.3 Intended audience

These Installation and User Instructions are intended for installers and users of a Plena system.

1.4 Related documentation

Safety Instructions (9922 141 1036x).

1.5 Alerts

Four types of alerts are used in this manual. The alert type is closely related to the effect that may be caused if it is not observed. These alerts - from least severe effect to most severe effect - are:

• Note Alert containing additional information. Usually, not observing a note alert does not result in damage to the equipment or personal injuries.

• Caution The equipment can be damaged if the alert is not observed.

• War ning Persons can be (severely) injured, or the equipment can be seriously damaged, if the alert is not observed.

• Danger Not observing the alert can result in death.

1.6 Icons

1.6.1 Note icons

The icons used in combination with Notes provide extra information about the Note. See the following examples:

Note

General icon for notes.

Note

Consult the indicated source of information.

1.6.2 Caution, Warning, and Danger icons

The icons used in combination with Caution, Warnings, and Dangers indicate the type of hazard present. See the following examples:

Caution, Warning, Danger

General icon for Cautions, Warnings and Dangers.

Caution, Warning, Danger

Icon for risk of electric shock.

Caution, Warning, Danger

Icon for risk of electrostatic discharge.

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1.7 Conversion tables

In this manual, SI units are used to express lengths, masses, temperatures etc. These can be converted to non-metric units using the following information.

table 1.1: Conversion of units of length

1 in = 25.4 mm 1 mm = 0.03937 in 1 in = 2.54 cm 1 cm = 0.3937 in 1 ft = 0.3048 m 1 m = 3.281 ft 1 mi = 1.609 km 1 km = 0.622 mi

table 1.2: Conversion of units of mass

1 lb = 0.4536 kg 1 kg = 2,2046 lb

table 1.3: Conversion of units of pressure

1 psi = 68.95 hPa 1 hPa = 0.0145 psi

Note

1 hPa = 1 mbar.

table 1.4: Conversion of units of temperature ° F = 9 . ( ° C + 32) ° C = 5 . ( ° F 32)

° F = 5 ° C = 9

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Plena Mixer Amplifier | Installation and User Instructions | Description en | 7

2 Description

2.1 The Plena product range

The Plena Mixer Amplifier is part of the Plena product range. Plena provides public address solutions for places where people gather to work, worship, trade, or relax. It is a family of system elements that are combined to create public address systems tailored for virtually any application.

The Plena product range includes:

•mixers

• power amplifiers

• a music source unit

• a digital message manager

• a feedback suppressor

• call stations

• an All-in-One system

•a timer

The various elements are designed to complement each other thanks to matched acoustical, electrical and mechanical specifications.

2.2 Contents of box

The packaging box contains the following contents:

• PLE-2MA120-US, or PLE-2MA240-US

• Labels and colored pins for indicating favorite settings

•Power cord

• Plena Bonus CD

• Mounting brackets (LBC 1901/00)

2.3 The Plena Mixer Amplifier

The Plena Mixer Amplifier is a high performance, professional public address unit for mixing up to six separate microphone/line signals, and any one of three separate music signals. For a schematic overview of the Plena Mixer Amplifier, see figure 2.1 on the next page.

The volume of each microphone/line signal can be individually adjusted to obtain the required mix; the mixed output is controlled via the master volume control and separate high/low tone controls. The unit is easy to use, and provides a crisp call or clear music. The amplifier also has enhanced features such as ducking level control, priority, labelling, and setting indicators.

All Microphone/line inputs can be switched between microphone level and line level sensitivity. The inputs are balanced but can also be used unbalanced. Phantom power can be selected via a DIP switch to provide power to condenser microphones. Input channels 1 and 2 can take priority over all other microphone and music inputs:

• Input 1 can be activated by contact closure on a PTT (push to talk). A chime can be configured to precede an announcement.

• Input 2 can be switched automatically if a signal is available at the input, for example. if someone speaks into the microphone (VOX activation).

A telephone/70 V emergency input with VOX activation is also provided for easy integration with another PA system or a telephone paging system. It has its own volume control and overrides all other inputs, including the call station and inputs 1 and 2.

The unit also has a line output to add amplifiers for larger systems that require more output power. This output can be switched to music only, for example, so that music on hold can be provided for the telephone system. Loop through input and output connections enable external sound processing equipment (for example, an equalizer or Plena feedback suppressor) to be connected between the preamplifier and the power amplifier stages. A feedback suppressor can ensure feedback-free, clear speech for all microphones.

Users can create custom labels for inputs, music sources, and output zones. These labels can be attached to the special holders at the front of the mixer amplifier. Colored pins can also be inserted at various positions around the volume and tone dial controls to indicate favorite settings for a particular application.

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An LED meter monitors the master output before the zone selection. This signal is also present on the headphone connector below the output meter. For total reliability and ease of use, a limiter is integrated into the output stage to restrict output if the user applies too much signal.

Note

When using the unit with backup power of 24 V, make sure that the unit is always powered ON. When the unit is switched OFF, the batteries will be drained as this will be regarded as a power

The unit has 24 VDC backup input with built in 24 VDC battery charger. A separate battery charger is,

source. Consequently the unit will revert to 24 VDC power from the 24 V input

therefore, not required. The charger charges the battery with a 0.5 A constant current until the battery voltage reaches 27.4 VDC. The charger then switches over to constant voltage charging (also known as float charging).

CALL STATION

PTT

Call Station Control

70 V

8Ohm

Zone 2

15V,2 30V

Wall Panel input micro controller

LINE

LINE/MIC

Power

MIC

P hantom

INSInIN

Out

Music only / Line out

Bal. input

D.C.supply

Amplifier

Click suppressi

CUSL

Call Only

Zone 1

201

figure 2.1: Schematic overview of the Plena Mixer Amplifier

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2.4 Controls, connectors and indicators

2.4.1 Front panel

See figure 2.2 for an overview of the controls and indicators. 1 Power button. 2 Label holder for user-defined description of

microphone/line inputs - custom labels can be

created by user. 3 Master high tone control for microphone/line inputs. 4 Label holder for user-defined description of music

sources - custom labels can be created by user. 5 Master high tone control for music inputs. 6 Label holder for user-defined description of zone

names - custom labels can be created by user. 7 Master volume control - controls all inputs except

emergency and call station. 8 Output level meter (-18 db, 0 db) 9 Input level control:

• microphone/line 1

• microphone/line 2

• microphone/line 3

• microphone/line 4

• microphone/line 5

• microphone/line 6 10 Master low tone control for microphone/line inputs. 11 Music source selector (for music inputs 1, 2, and 3). 12 Music source volume control. 13 Master low tone control for music inputs. 14 Zone 1 selection button. 15 Zone 2 selection button.

16 Air inlet holes.

Note

Do not obstruct the airflow into the unit.

17 Headphone socket.

Note

Users can create custom labels for the: microphone/line inputs, description of the music sources, and audio output zones 1 and 2. These labels can be attached to the mixer amplifier at position numbers 2, 4, and 6 (see figure 2.2). Colored pins can also be inserted at various positions around the dial controls to indicate the favorite settings for a particular application. For more information on inserting and removing pins, see section 4.3.2.

2.4.2 Plena PLE-WP2Z3S wall panel

The optional Plena PLE-WP2Z3S wall panel can be used to remotely control the unit from a maximum of four remote locations. The appearance of the wall panel is matched to the Bosch loudspeaker volume controls.

The zone can be activated or deactivated, and the music source can be easily changed. The status of each zone and music source is indicated by an LED. A standard CAT 5 cable is used to connect the wall panel to the mixer-amplifier. The maximum distance is 200 m. Please refer to the relevant datasheet for more information.

9 1110 12 13 14 15 1716

2 3 54

figure 2.2: Front panel

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