Dynacord V600:4 Digital-Endstufe Installation Manual [EN]

Power amplifier

V600:4

en

Installation manual

Power amplifier Table of contents | en 3

Table of contents

1

1.1 Safety Information 4

1.2 Disposal instructions 5

1.3 Class B Notice for FCC and ICES 003 5

2

2.1 Digital document 6

2.2 Intended audience 6

2.3 Copyright notice 6

2.4 Trademarks 6

2.5 Notice of liability 6

2.6 Document history 7

3

3.1 Features and functions 8

3.2 Functional diagram 10

4

4.1 Unpacking 11

4.2 Parts included 11

4.3 Dimensions 12

4.4 Mounting and ventilation 12

4.5 Fan cooling 14

4.6 Mains operation and resulting temperature 15

5

5.1 Indicators, controls and settings 16

5.1.1 Set the output mode (AMP MODE) 17

5.1.2 Set the input routing (DUAL / PARALLEL / IN1 to ALL) 18

5.1.3 Set the loudspeaker parameters (SPEAKER EQ) 19

5.1.4 Set the energy safe option (APD) 20

5.1.5 ecoRAIL 20

5.2 Connections 21

5.2.1 Audio inputs 21

5.2.2 AMP-LINK 23

5.2.3 Power outputs 24

5.2.4 Ready/Fault relay 25

5.2.5 Remote on 26

5.2.6 Mains power 26

6

6.1 Power on 27

6.2 Input level control 27

7

8

9

10

11

12

Important product information 4

About this manual 6

Product introduction 8

General installation procedures 11

Installation 16

Operation after installation 27

Troubleshooting 28

Maintenance 30

Technical data 31

Approvals 34

Block diagram 35

Support and academy 36

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4 en | Important product information Power amplifier

!

1 Important product information

1.1 Safety Information

1. Read and keep these safety instructions. Follow all instructions and heed all warnings.

2. Download the latest version of the applicable installation manual from
www.dynacord.com for installation instructions.

Information

Refer to the Installation Manual for instructions.

3. Follow all installation instructions and observe the following alert signs:

Notice! Containing additional information. Usually, not observing a notice does not
result in damage to the equipment or personal injuries.

Caution! The equipment or the property can be damaged, or persons can be injured if
the alert is not observed.

Warning! Risk of electric shock.

4. System installation and servicing by qualified personnel only, in accordance with
applicable local codes. No user-serviceable parts inside.

5. System installation for emergency sound (except for call stations and call station
extensions) in a Restricted Access Area only. Children may not get access to the system.

6. For rack-mounting of system devices, make sure that the equipment rack is of suitable
quality to support the weight of the devices. Use caution when moving a rack to avoid
injury from tip over.

7. The apparatus shall not be exposed to dripping or splashing and no objects filled with
liquids, such as vases, shall be placed on the apparatus.

Warning! To reduce the risk of fire and electric shock, do not expose this apparatus to
rain or moisture.

8. Mains powered equipment shall be connected to a mains power outlet socket with a
protective earthing connection. An external, readily operable, mains plug or all‑pole mains
switch shall be installed.

9. Only replace the mains fuse of an apparatus with a fuse of the same type.

10. The protective ground connection of an apparatus shall be connected to protective
ground before the apparatus is connected to a power supply.

11. This unit has an autoranging input circuitry suitable for 100‑240Vac.

12. Amplifier outputs marked with  may carry audio output voltages up to 120V
Touching uninsulated terminals or wiring may result in an unpleasant sensation.

Amplifier outputs marked with or may carry audio output voltages above 120V
requires a skilled person to strip and connect the loudspeaker wires in such a way that
the naked conductors are inaccessible.

13. To prevent hearing damage do not listen at high volume levels for long periods.

RMS

.

RMS

. It

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Power amplifier Important product information | en 5

1.2 Disposal instructions

Old electrical and electronic appliances.

Electrical or electronic devices that are no longer serviceable must be collected
separately and sent for environmentally compatible recycling (in accordance with the
European Waste Electrical and Electronic Equipment Directive).
To dispose of old electrical or electronic devices, you should use the return and
collection systems put in place in the country concerned.

1.3 Class B Notice for FCC and ICES 003

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 and Canadian ICES‑003 requirements. 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 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.

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Installation manual

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6 en | About this manual Power amplifier

2 About this manual

The purpose of this manual is to provide information required for installing, configuring,
operating and maintaining this product.
Read through this manual to familiarize yourself with the safety information, features, and
applications before you use it.

2.1 Digital document

This manual is available as a digital document in the Adobe Portable Document Format (PDF).
You can find information about Dynacord products on the product related information at
www.dynacord.com.

2.2 Intended audience

This manual is intended for everyone who is authorized to install and use this product.

2.3 Copyright notice

Unless otherwise indicated, this publication is the copyright of Dynacord. All rights are
reserved.

2.4 Trademarks

Throughout this document trademark names may have been used. Rather than put a
trademark symbol in every occurrence of a trademark name, Dynacord states that the names
are used only in an editorial fashion and to the benefit of the trademark owner with no
intention of infringement of the trademark.

2.5 Notice of liability

While every effort has been taken to ensure the accuracy of this document, neither Dynacord
nor any of its official representatives shall have any liability to any person or entity with
respect to any liability, loss or damage caused or alleged to be caused directly or indirectly by
the information contained in this document.
Dynacord reserves the right to make changes to features and specifications at any time
without prior notification in the interest of ongoing product development and improvement.

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Power amplifier About this manual | en 7

2.6 Document history

Release date Documentation version Reason

2022.02.01 V1 Release

Release date Documentation version Reason

2022.02.01 V1 Release

Dynacord

Installation manual

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8 en | Product introduction Power amplifier

3 Product introduction

The V600:4 is a 600W power amplifier with powerTANK technology that flexibly delivers the
total power over its 4 channels.
The amplifier is ideally suited to background music and clear voice announcement applications
such as:
– Supermarkets
– Bars and restaurants
– Retail outlets
– Education
– Houses of worship
– Museums and galleries
– Transport hubs
– Conference centers

3.1 Features and functions

– 4‑channel amplifier, with a total powerTANK capacity of 600W
powerTANK is a reservoir of available amplification power that is deployed flexibly across the
4 channels of the amplifier. There is no need to set up the powerTANK as it adapts to the
requirements of each zone or output without extra manual configuration of each individual
channel.

– dualCOOL convection cooling with additional intelligent fan in case of extreme thermal

conditions

The dualCOOL thermal design means that the amplifier typically operates as a convection
cooled amplifier, but in extreme thermal conditions the amplifier is also equipped with an
intelligent multi‑speed fan to ensure maximum performance and reliability in any application.

– ecoRAIL and APD deliver significant reduction in power consumption
ecoRAIL’s power consumption is similar to a regular standby level, yet ecoRAIL still produces
audio output suitable for background music levels, and the Auto Power Down (APD) mode can
be engaged to further reduce power consumption to less than a watt when there is no signal
present for extended periods.

– Variable Load Drive (VLD) providing the same power into 4Ω, 8Ω, 70V or 100V
Variable Load Drive (VLD) ensures that the powerTANK capacity is utilized efficiently,
providing consistent power to any channel with any impedance.

– amp‑LINK single cable solution for easy installation
The single cable installation feature of amp‑LINK is compatible with AES72‑1E (RJ45
connectors) wired devices. This solution provides easy installation for all four channels
without needing to wire all the connections individually.

– Advanced Protection features and PFC to ensure reliability

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Power amplifier Product introduction | en 9

Equipped with a PFC power supply and protection features usually reserved for the
professional power amplifiers, means that the amplifier resists complete shutdown situations
and will always perform at its best under all conditions.

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10 en | Product introduction Power amplifier

1

2

3

4

1

2

3

4

1

2

3

4

3.2 Functional diagram

Functional and connection diagram Internal and external device functions

Signal input

AMP‑LINK input

Mains input

Loudspeaker output

REMOTE ON Input

RDY/FLT Output

Level control

Input routing

Signal processing (filter, limiter)

Amplifier

Power supply

Controller

Failure relay

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Power amplifier General installation procedures | en 11

4 General installation procedures

Before starting installation, ensure the following:
– You make use of manufacturer specified installation materials.
– No liquids can spill into or on the products.
– Installation is in a clean environment free of dust.
– The ventilation airflow of the 19" units is not obstructed.
– There is a mains power outlet of sufficient rating close to the intended location of the

products.

– Sufficient free space and access at the rear of the 19" units for connectors and wiring.

4.1 Unpacking

The products should be unpacked and handled with care. If an item appears to be damaged,
notify the shipper immediately. If any items are missing, notify your Dynacord representative.
The original packaging is the safest container in which to transport products and can also be
used to return products for service, if necessary.

4.2 Parts included

Quantity Component

1 Power amplifier

1 Mains cord

1 Euroblock remote connector 5‑pole

2 Euroblock input connector 6‑pole

2 Euroblock output connector 4‑pole

4 Rubber feet

2 19"‑rack mounting brackets (pre‑mounted)

1 Quick Installation Guide

1 Safety information

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12 en | General installation procedures Power amplifier

i

4.3 Dimensions

4.4 Mounting and ventilation

Notice!

Before mounting the device, it is recommended to make the required settings. See

controls and settings, page 16

19”-rack mounting

This power amplifier has been designed for installation in a conventional 19”‑equipment rack.
Attach the power amp with its frontal rack mount ears using four screws and washers as
shown in the illustration.

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.

Installation manual

Indicators,

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Power amplifier General installation procedures | en 13

Additionally securing the amplifier by rack rails might be necessary in case you intend to
transport the rack. Failure to do so may result in damage to the power amplifier as well as to
the rack case.

Table-top use

If you want to use this device outside a 19”‑rack on a tabletop, dismount the rack mount ears,
and mount the four self‑adhesive rubber feet on the bottom of the device.

Dynacord

Ventilation

The airflow direction is side-to-rear. In general, setting up or mounting the power amplifier has
to be done in a way that fresh air can enter unhindered at the side and exhausted air can exit
at the rear. When installing the power amp in a case or rack system, attention should be paid
to these details to provide sufficient ventilation.

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14 en | General installation procedures Power amplifier

– Allow for an air duct of at least 60mm between the rear panel of the power amplifier and

the inner wall of the cabinet/rack case.

– Make sure that the duct reaches up to the cabinets or the rack case's top ventilation

louvers.

– Leave room of at least 100mm above the cabinet/rack case for ventilation. Since

temperatures inside of the cabinet/rack case can easily rise up to 40°C during operation
of the power amp, it is mandatory to bear in mind the maximum allowable ambient
temperature for all other appliances installed in the same cabinet/rack case.

For fixed amplifier installations in a device control room that incorporate a central air‑cooling
system or air conditioners, calculating the maximum heat emission may be necessary. See also

Mains operation and resulting temperature, page 15

4.5 Fan cooling

The device is designed for desktop operation without the need to run the fan, using
convection cooling. This ensures silent running in most conditions.
The temperature of the power amp's channels are supervised and monitored, as well as the
power supply and control unit section. These parameters determine the fan activation to
prevent output limiting from occurring.
The fan has two optimized performance levels for low and high and use the same criteria to
determine the appropriate level of force cooling required.
The rotation of the fan is supervised. In case of a lock condition where the fan is not rotating,
this is indicated with flashing warning LEDs on the front panel and the Fault relay. However,
even in such a condition the amplifier will operate without switch‑off or reduction if
supervised and monitored levels are within the range of silent running parameters.

.

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Power amplifier General installation procedures | en 15

4.6 Mains operation and resulting temperature

The power drawn from the mains network is converted into output power to feed the
connected loudspeaker systems and into heat. The difference between power consumption
and dispensed power is called power dissipation (Pd). The amount of heat resulting from
power dissipation might remain inside of a rack‑shelf and needs to be diverted using
appropriate measures.
Mains operation and resulting temperature tables allow the determination of power supply
and cabling requirements. The tables are meant as auxiliary means for calculating
temperatures inside of a rack-shelf system/cabinet and the ventilation efforts necessary.
The column Pd lists the leakage power in relation to different operational states. The column
BTU/hr lists the dispensed heat amount per hour.

V600:4 U

[V] (4)

mains

I

mains

[A]

P

mains

[W]

P

out

[W]

P

d

[W] (3)

BTU/hr

(2)

Standby 230 0.12 < 1.0 0 < 1.0 < 3.4

ecoRAIL mode (incl. Idle) 230 0.23 < 20.0 0 < 20.0 < 68

1/8 Max. Output Power Pink noise

230 1.2 125 4 x 19 49 167

(1)

1/3 Max. Output Power Pink noise

230 1.7 280 4 x 50 80 273

(1)

1/8 Max. Output Power 1kHz 230 0.9 115 4 x 19 39 133

1/3 Max. Output Power 1kHz 230 2.0 265 4 x 50 65 222

– (1) Pink Noise according IEC60268‑1
– (2) 1BTU = 1055.06 J = 1055.06Ws
– (3) Pd = Power dissipation
– (4) The following factors can be used for easy conversion of mains current:

– 100V = 2.3
– 120V = 1.9
– 240V = 0.96

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16 en | Installation Power amplifier

A B

C

D

1 2 3 4 6 5 7 5 6 5 3 45

88

5 Installation

–

Indicators, controls and settings, page 16

–

Connections, page 21

5.1 Indicators, controls and settings

Front view

LED Indicator description Color

A Device/channel fault (CH1-4) Red

B LIMIT Over driven channel (CH1-4) Yellow

C SIGNAL Input signal present (CH1-4) Green

D Power On/Off amplifier Green is ON

Blue is ecoRAIL active, or Auto
Power Down (APD) active

Rear view

Description

1 AC mains input socket

2 Fault relay (FLT RDY) contacts and REMOTE ON control input socket

3 AMP MODE (CH1/CH2, CH3/CH4) and DUAL-PARALLEL DIP‑switches

4 SPEAKER EQ (CH1/CH2, CH3/CH4), APD and IN1 to ALL DIP‑switches

5 LEVEL control (CH1-4)

6 Line level audio inputs socket (CH1/CH2, CH3/CH4)

7 AMP‑LINK “input” RJ45 socket

8 Loudspeaker OUTPUTS socket (CH1/CH2, CH3/CH4)

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Power amplifier Installation | en 17

APD

AMP MODE

CH 1

CH 2

CH 1

CH 2

OFF

ON

100 V

4 Ω

8 Ω

70 V

LP

FLAT

HP 1

HP 2

DUAL PARALLEL CH 1/2

SPEAKER EQ

CH3

CH4

CH3

CH4

100 V

4 Ω

8 Ω

70 V

LP

FLAT

HP 1

HP 2

IN1 to ALL

OFF

ON

DUAL PARALLEL CH 3/4

AMP MODE

SPEAKER EQ

5.1.1 Set the output mode (AMP MODE)

100 Volt and 70 Volt modes

The use of either the 70V or 100V modes allow connection of high impedance (HZ)
loudspeaker lines without using output transformers. In this case the maximum number of
loudspeakers connected to an output channel is only limited by the amplifier channel output
power.
It is recommended that this mode should be used if the distance between amplifier and
speaker is larger than 50m of cable distance (approx. 150ft) and/or a high number of small
speakers with transformers are used.
When 100V or 70V is selected a 50Hz High Pass filter is automatically activated to reduce the
possibility of loudspeaker transformer saturation to ensure the best performance.

8Ω mode

In 8Ω mode the power amplifier reaches rated output power having a load of 8Ω connected.

4Ω mode

In 4Ω mode the power amplifier reaches the rated output power with a single cabinet rated at
4Ω or two cabinets of 8Ω each, or up to 4 cabinets of 16 ohms each. These configurations
can be driven by each amplifier channel. This mode usually used if multiple speakers with
medium or low‑power rating are driven in low impedance mode (LZ).

Refer to

– Indicators, controls and settings, page 16

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18 en | Installation Power amplifier

APD

AMP MODE

CH 1 CH 2

CH 1

CH 2

OFF

ON

100 V

4 Ω

8 Ω

70 V

LP

FLAT

HP 1

HP 2

DUAL PARALLEL CH

1/2

SPEAKER EQ

CH3

CH4

CH3

CH4

100 V

4 Ω

8 Ω

70 V

LP

FLAT

HP 1

HP 2

IN1 to ALL

OFF

ON

DUAL PARALLEL CH

3/4

AMP MODE SPEAKER EQ

5.1.2 Set the input routing (DUAL / PARALLEL / IN1 to ALL)

DUAL and PARALLEL modes are selected for channels 1‑2 and separately for channels 3‑4,
using the DIP switch in the Up position for “DUAL” mode or the Down position for
“PARALLEL” mode. IN1 to ALL affects all channels. If IN1 to ALL is active, it overrides the
setting of DUAL/PARALLEL switch.

DUAL mode

In DUAL mode, the two adjacent channels controlled via the DIP‑switch are completely
independent from each other. Using the input level controls on the power amp’s rear panel
allows independently adjusting the channels’ amplification.

PARALLEL mode

In PARALLEL mode, the inputs of the channels CH1‑2 and/or CH3‑4 are directly linked. The
audio signal has to be applied to the input connectors of either CH1 resp. CH3. Input level
control for CH1 controls CH1 and CH2 at the same time. Respectively level control CH3 affects
CH3 and CH4..

IN1 to ALL

IN1 to ALL allows the use of input 1 to be sent to all amplifier channels. IN1 to ALL is
configured as either ON or OFF using the IN1 to ALL DIP switch at the rear of the device.
Level control CH1 affects the volume of all 4 output channels at the same time.

Refer to

– Indicators, controls and settings, page 16

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Power amplifier Installation | en 19

APD

AMP MODE

CH 1

CH 2

CH 1

CH 2

OFF

ON

100 V

4 Ω

8 Ω

70 V

LP

FLAT

HP 1

HP 2

DUAL PARALLEL CH 1/2

SPEAKER EQ

CH3

CH4

CH3

CH4

100 V

4 Ω

8 Ω

70 V

LP

FLAT

HP 1

HP 2

IN1 to ALL

OFF

ON

DUAL PARALLEL CH 3/4

AMP MODE SPEAKER EQ

5.1.3 Set the loudspeaker parameters (SPEAKER EQ)

The amplifier’s SPEAKER EQ enables the output audio to be optimized to suit particular types
of speakers (e.g. subwoofers) or particular environments, allowing some optimization for
voice/speech by reducing the low frequency feedback.

Mode CH 1 - 4 switches Description

HP1 Up Up High Pass filter 100Hz @ 24dB/Oct.

HP2 Up Down High Pass filter 150Hz @ 24dB/Oct.

LP Down Up Low Pass filter 150Hz @ 24dB/Oct.

FLAT Down Down Full range operation

– HP1 is optimized for speech and voice announcements as a way to reduce low frequency

feedback and microphone handling noise.

– HP2 is useful for use with Mid‑High loudspeakers in 2‑way speaker systems that contain

subwoofers or to further reduce low frequency content from the loudspeakers.
– LP is useful when connected to subwoofers and can be used in combination with HP2.
– FLAT is designed for full range operation and contains a 30Hz 24dB/Oct high‑pass filter

for both 4Ω and 8Ω operation or the 50Hz 24dB/Oct high pass filter when used in

70/100V operation.

Refer to

– Indicators, controls and settings, page 16

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Installation manual

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20 en | Installation Power amplifier

APD

AMP MODE

CH 1

CH 2

CH 1

CH 2

OFF

ON

100 V

4 Ω

8 Ω

70 V

LP

FLAT

HP 1

HP 2

DUAL PARALLEL CH 1/2

SPEAKER EQ

CH3

CH4

CH3

CH4

100 V

4 Ω

8 Ω

70 V

LP

FLAT

HP 1

HP 2

IN1 to ALL

OFF

ON

DUAL PARALLEL CH 3/4

AMP MODE SPEAKER EQ

i

5.1.4 Set the energy safe option (APD)

The APD (Auto Power Down) automatically places the amplifier into a low power standby
mode after a period of inactivity when signal, such as a music source, is not present for an
extended period.
The threshold level of the APD is -45dBu* and will automatically activate standby if the signal
is constantly below this level for 25min across all inputs.
The amplifier is woken from APD to full activity by:
– Signal source (music) above -40dBu threshold.
– Pressing the front panel power button.
– If configured, Remote ON wakes the amplifier from APD through a remote button.
APD is configured as either ON or OFF using the APD DIP switch at the rear of the device.

*Activation level depends on several variables including the level controller position. -45dBu is
an estimate based on a 0dB position of the level control.

Notice!

For activating the device all input channels are monitored, regardless of routing switches or
level setting.

Refer to

– Indicators, controls and settings, page 16

5.1.5 ecoRAIL

ecoRAIL is a dedicated low‑voltage rail supply in the amplifier that significantly reduces power
consumption and increases power efficiency. ecoRAIL is permanently configured, so there is
no need to activate or set up this function.

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Installation manual

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Power amplifier Installation | en 21

i

5.2 Connections

–

Audio inputs, page 21

–

AMP-LINK, page 23

–

Power outputs, page 24

–

Ready/Fault relay, page 25

–

Remote on, page 26

–

Mains power, page 26

5.2.1 Audio inputs

Audio input connectors are either Euroblock type for 2‑channels per connector, or 4‑channels
via the AMP‑LINK RJ45 connector.

Euroblock inputs

Euroblock inputs are electronically balanced. Whenever possible, using balanced audio signal
feeds at the input of the power amplifier is always preferred. Unbalanced connections should
only be used if the cables are very short and no interfering signals are to be expected in the
vicinity of the power amplifier. In this case, bridging the screen (shielding) and the pin of the
inverting input inside of the connector is mandatory. Otherwise, a 6dB drop in level, hum and
hiss noise could result. Due to their immunity against external interference sources, such as
dimmers, mains connections, HF-control lines, etc., using balanced cabling and connections is
always preferable.

Notice!

Euroblock input connectors must be inverted when inserting the connector to the device
(screws downwards).

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22 en | Installation Power amplifier

A Balanced input connection

B Unbalanced input connection

+ Hot

- Cold

* Jumper from cold to shield

– The pin out is labeled on the rear of the amplifier.

Refer to

– Indicators, controls and settings, page 16

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Shield

Installation manual

Dynacord

Power amplifier Installation | en 23

i

!

5.2.2 AMP-LINK

AMP‑LINK functions as either an input of 4 channels via a single cable connection, or as audio
output when the Euroblock inputs are in use. This allows one set of inputs from the Euroblock
connections to go to another amplifier. AMP‑LINK is compatible with any AES72‑1E device.
– AMP‑LINK is a port with 4 balanced analog audio lines, which makes cabling with

compatible devices easy.
– AMP-LINK is compatible with standard CAT5e or CAT6 wiring and it is recommended to

use a quality shielded STP cable for increased distances over 5m to 25m to reduce audio

and signal degradation by maintaining balanced signal.
The wiring of AMP‑LINK is below.

Notice!

The wiring is according to AES72‑1E.

Caution!

Do not connect AMP‑LINK with Ethernet, CAN bus, Call station, or even PoE powered ports!
Noise can occur which may damage speakers or the amplifier.

Refer to

– Indicators, controls and settings, page 16

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24 en | Installation Power amplifier

!

!

!

+

-

+

-

OUTPUTS

CH

1 CH 2

+

-

+

-

CHANNEL 1 CHANNEL 2

+

-

+

-

OUTPUTS

CH 3 CH

4

+

-

+

-

CHANNEL 3 CHANNEL 4

+

-

+

-

OUTPUTS

CH 1 CH 2

+

-

+

-

+

-

5.2.3 Power outputs

The output connectors are 2 Euroblock type for 2‑channels per connector. This allows an easy
pre‑wiring of the cables outside the rack and a fast - one connection for multiple channels at
once, without the danger of wiring errors.

Warning!

It is not allowed to interconnect terminals of different channels!

Caution!

For compliance to UL62368‑1 and CAN/CSA C22.2 No. 62368‑1 all loudspeaker wiring must
be Class2 wiring (CL2); this requirement does not apply for compliance to EN/IEC62368‑1.

Caution!

Amplifier outputs may carry output voltages up to 100V
wiring may result in an unpleasant sensation. The external wiring of these terminals requires
installation by an instructed person.

. Touching uninsulated terminals or

RMS

LoZ 4Ω / 8Ω application

HiZ 70V / 100V application (Example channel1)

Refer to

– Indicators, controls and settings, page 16

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Power amplifier Installation | en 25

5.2.4 Ready/Fault relay

The Ready/Fault relay is a potential free relay toggle for READY or FAULT indication. This
allows the amplifier to notify an external device or indicator that the amplifier status is either
“RDY” (all is ok) or “FLT” (fault) and may not be functioning correctly. The next table explains
the relay setting for the different operation and error modes.

READY (RDY) / FAULT (FLT) Description

RDY Amp active, all channels on

FLT APD is activated or device is not on

FLT One or more channels in Protect state

FLT Internal error, e.g. fan blocked

*) RDY/FLT: Indicates the closed contact.

Figure A shows the FLT (fault) condition, figure B shows the RDY (all is ok) condition.

Refer to

– Indicators, controls and settings, page 16

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26 en | Installation Power amplifier

i

!

!

5.2.5 Remote on

REMOTE ON provides a simple way to remotely power-on/off the power amplifier. REMOTE
ON overrides front panel power button when activated.
This can be used by an external device or a simple switch that can be located away from the
amplifier for convenience.
– Leaving the pins of REMOTE ON socket “open” (nothing connected) the device works

with the front panel power button.
– See figure A below.

– When connecting the pins, the device is enforced to power on. This overrides the

operation of the front power button.

– See figure B below.
To configure the amplifier so that users cannot turn off the device (avoiding user error), simply
wire bridge the two pins together, then the front panel power button is permanently
overridden.

Refer to

– Indicators, controls and settings, page 16

5.2.6 Mains power

The power amplifier receives its power supply via the MAINS IN connector. Only the provided
power cord may be used. The amplifier is equipped with a wide range power supply. Relevant
technical data regarding mains power consumption can be found on the product label on the
rear‑side of the amplifier.

Notice!

When power is restored, the device will continue in its last known mode of operation.

Caution!

During installation, always separate the power amplifier from the mains socket! Only a
correctly installed and grounded wall mains outlet must be used.

Caution!

The front power button doesn't disconnect the device from mains. The only way to switch‑off
mains entirely is to remove the power plug.

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Refer to

– Technical data, page 31
– Indicators, controls and settings, page 16

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Power amplifier Operation after installation | en 27

i

6 Operation after installation

6.1 Power on

The device can be activated by pushing the power button on the front panel. Speaker system
switch‑on is delayed by approximately three seconds via output relays, effectively suppressing
any possible power‑on noise, which otherwise might be heard through the loudspeakers.

– See also

Remote on, page 26

6.2 Input level control

Adjustment of amplifier to source.

– Default is middle position. Full clockwise spends additional 6dB to drive the amplifier

even from weak sound sources.
The level control is assigned with the physical input, not the output channels. If routing
PARALLEL or IN1 to ALL is used, the level control is same for all 4 channels.

.

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Notice!

The level control of the unused input is ineffective. If however independent level control is
desired, the DUAL routing should be used instead and the inputs wired as parallel.

Refer to

– Indicators, controls and settings, page 16

Installation manual

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28 en | Troubleshooting Power amplifier

7 Troubleshooting

Problem Possible cause Solution

Amplifier does not turn on
and power LED is not
illuminated.

Power button LED is
continuously blinking.

No audio signal (no front
panel LED indication).

No audio is coming out of the
speakers, but the input LED
indication shows there is
signal.

Power (plug) disconnected or
the power source is giving
insufficient power to the
device.

Start‑up fault. Contact service agent.

1) Audio input cable has
come loose or has not been
properly plugged in.

2) Input source is not sending
signal or sufficient signal.

3) Input level is turned down.

1) Output speaker cable has
come loose or has not been
properly plugged in.

2) Maybe there is a pilot tone
present.

Ensure power cord is securely
connected to device and
check the power from the
mains.

1) Check that the cables for
any damage.
Check that the cables are
installed and wired correctly.
Check that the wires are
secured inside the connector,
and the connector is fully
plugged in and seated
securely to the amplifier.

2) Ensure that the input is
turned up.

1) Check that the cables for
any damage.
Check that the cables are
installed and wired correctly.
Check that the wires are
secured inside the connector,
and the connector is fully
plugged in and seated
securely to the amplifier.

2) Pilot tone will usually not
be audible, but the amplifier
is still working correctly.

Audio sounds distorted. 1) Input level is too high or

Audio sounds very muffled or
lacks low frequencies.

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too low.

2) Clipping of input stage.

3) Music source is of poor
quality.

4) The amplifier is being
overdriven by exceeding the
max. output allowed (i.e.
drained powerTANK).

Incorrect speaker settings are
activated (e.g. LP used with a
full range speaker).

Installation manual

1) Ensure that the source
level is not too high or too
low. This could mean
re‑adjusting the level on the
amplifier.

2) Check the quality of source
material.

3) Turn down or consider a
bigger amplifier.

Adjust the speaker settings
on the rear of the device and
ensure that the settings
match they types of speakers
used.

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Power amplifier Troubleshooting | en 29

Problem Possible cause Solution

See

Set the loudspeaker
parameters (SPEAKER EQ),
page 19

.

Weak sound output, but with
no fault indications.

Incorrectly wired input
connectors.

Hum and hiss noise. Interference on inputs due to

unbalance cables or incorrect
connections.

Fault LED on the amplifier
channel is indicating solid
red.

1) Speaker cable has a short
or the cable is damaged.

2) incorrect AMP MODE
selected.

3) Internal amplifier channel
malfunction.

APD has been activated, but
the amplifier is not going into
standby mode.

1) Possible unintended signal
or interference on the input.

2) Signal could be present on
an unused channel from the
desired signal routing.

Ensure that the input cables
are correctly match to the
polarity of the source (i.e.
wired correctly).
See

Audio inputs, page 21

.

Suggest using balanced input
cable wiring.
See

Audio inputs, page 21

.

1) Check or replace speaker
cables and ensure that
connections are wired
correctly.

2) Select the appropriate
AMP MODE for your speakers.
See

Set the output mode
(AMP MODE), page 17

.

3) Contact service agent.

Check that there are no
unintended signals on any
inputs (including ground loop
interference).

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Amplifier does not wake up
from APD.

ecoRAIL is not activating as
expected.

Amplifier is working, but all
the red LEDs are flashing
every 2 seconds and the relay
is showing a fault status.

Output power is reducing,
and LIMIT LED is illuminating.

Input source level is too low. Ensure that the input source

is active and delivering
sufficient signal to the
amplifier.

Volume is set too high. Lower the volume, or

consider more sensitive
speakers which will deliver
higher volume with ecoRAIL
engaged.

Fan error. Check blockages or if

something is caught in the
fan.

Amplifier is under extreme
thermal conditions, well
beyond operating
specifications of 45℃.

Installation manual

Consider changing the
location of the amplifier and
check that there is sufficient
airflow around the amplifier.

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30 en | Maintenance Power amplifier

8 Maintenance

This product has been designed to operate without problems for a long period of time, with a
minimum of maintenance.
In order to guarantee trouble-free operation periodically:
– Clean all units with a damp, lint‑free cloth; never use water or chemicals.
– Vacuum the air vents to ensure good ventilation.
– Check all cable connections for corrosion and the screw terminals to make sure that they

have not become loosened.

– Check the ground (PE) connection of the system components.

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Power amplifier Technical data | en 31

9 Technical data

Electrical

Output power 4Ω 8Ω 70V 100V

Rated output power

1

4 x 150 W

Maximum output power per

500W 600W 500W 600W
channel (power sharing)1 at
minimum impedance

Total rated output power

1

600 W

Number of channels 4

Output voltage rated output

24.5 V

RMS

34.6 V

RMS

70.7 V

RMS

100 V

power

Maximum output voltage 40.0 V

RMS

56.0 V

RMS

70.7 V

RMS

100 V

Rated impedance per channel 4Ω 8Ω 33.3Ω 66.7Ω

Minimum impedance per channel 2.6Ω 4Ω 10Ω 16.7Ω

Amplifier 4Ω 8Ω 70V 100V

Nominal Gain (+6dBu input

24.0 dB 27.0 dB 33.2 dB 36.2 dB

sensitivity, LEVEL 0dB)

Maximum Gain (0dBu input

30.0 dB 33.0 dB 39.2 dB 42.2 dB

sensitivity, LEVEL +6dB)

THD+N

< 0.1 %

(1/8 rated output power, 1kHz)

RMS

RMS

Crosstalk

< -70dB < -75dB < -90dB < -95dB
(ref. 1kHz, 12dB below
maximum)

Frequency Response
(ref. 1kHz, analog in to speaker
out, -3dB)

Damping Factor

2

HP: 30/100/150Hz to

20kHz

LP: 30Hz to 150Hz

HP: 50/100/150Hz to
20kHz
LP: 50Hz to 150Hz

>80 >160 >500 >1000
(30/50Hz to 1kHz, ref. to rated
impedance)

Output Stage Topology Class D, fixed frequency

Signal to Noise Ratio

> 98 dB > 100 dB > 101 dB > 103 dB
(A‑weighted, ref. to rated output
power, LEVEL 0 dB)

Output Noise

< -68 dBu < -67 dBu < -62 dBu < -61 dBu
(A-weighted, LEVEL 0 dB)

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32 en | Technical data Power amplifier

Connectivity

Analog Audio Input

Type 2 x 6‑pin Euroblock, 3.81mm, male,

parallel 1x RJ45 AMP‑LINK

Maximum input level (LEVEL 0 dB) +18dBu

Input impedance, active balanced 20kΩ

Mains Input IEC C14

Loudspeaker output 2 x 4-pin Euroblock, 5.08 mm, female

Control Port

Type 1 x 5‑pin Euroblock, 3.81 mm, male

REMOTE ON Remote On / Standby contact

(overrides power button on front
panel)

READY/FAULT Galvanic isolated relay, max. 30VDC /

500mA

DC

General

Signal processing Input Routing, HPF24dB/Oct.,

LPF24dB/Oct., Flat, Peak Limiter

Power requirements 100V to 240V, 50Hz to 60HzAC

Power consumption

Consumption at 1/8 rated output power 115W

Idle mode (ecoRAIL with no input signal) < 20 W

Standby mode (APD active) < 1 W

Power supply topology Switching power supply with power

factor correction

Protections Audio limiters, high temperature, DC,

HF, short circuit, back‑EMF, peak
current limiters, inrush current
limiters, mains over/under voltage
protection

Front status LEDs Signal, limit, fault LEDs per channel;

power LED

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Power amplifier Technical data | en 33

Environmental

Climatic conditions

Cooling concept Convection cooling in tabletop

application and rack application with
spacing between units. Forced
cooling (side to rear) in rack
application without spacing between
units and in extreme thermal
conditions.

Ambient temperature limits -5 °C to +45 °C

(+23 °F to +113 °F)

Altitude (operating) -500m to +5000m

(-1614ft to 16404ft)

Mechanical

Enclosure

IEC Protection Class Class I (grounded)

Dimensions (HxWxD)
With 19” mounting brackets 44.2 x 483 x 269.5mm

(1.74x19.2x10.6in)

Weight 3.6kg (7.9lb)

1)

Test signal for max. output power according IHF‑A‑202 (Dynamic-Headroom, burst 1kHz /

20ms on / 480ms off / low level -20dB)

2)

Selectable via Speaker EQ.

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34 en | Approvals Power amplifier

10 Approvals

Regulatory areas

Safety EN/IEC/CSA/UL62368‑1

Immunity EN55035, EN61000‑4‑11

Emissions EN55032, EN61000‑3‑2, EN61000‑3‑3, ICES‑003, e‑CFR

Title 47 ChapterI SubchapterA Part15 SubpartB

Environment EN/IEC63000

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Power amplifier Block diagram | en 35

11 Block diagram

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36 en | Support and academy Power amplifier

12 Support and academy

Support

Access our support services at www.boschsecurity.com/xc/en/support/.
Bosch Security and Safety Systems offers support in these areas:
– Apps & Tools
– Building Information Modeling
– Warranty
– Troubleshooting
– Repair & Exchange
– Product Security

Bosch Building Technologies Academy
Visit the Bosch Building Technologies Academy website and have access to training courses,
video tutorials and documents: www.boschsecurity.com/xc/en/support/training/

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Power amplifier Support and academy | 37

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38 | Support and academy Power amplifier

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Installation manual

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Bosch Security Systems B.V.

Torenallee 49
5617 BA Eindhoven
Netherlands

www.boschsecurity.com

© Bosch Security Systems B.V., 2023

202303171236