Lab Gruppen C 28:4 Operation Manual

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Rev. 3.0.0

Item no. OM–CS

C SERIES

Dedicated Installation Ampliﬁers

C 88:4 C 68:4 C 48:4 C 28:4 C 16:4

Operation Manual

1. Important safety instructions

Before using the device, be sure to carefully read the Safety Instructions. Keep this document with the device at all times.

1. Read these instructions.

2. Keep these instructions

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with a dry cloth.

7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including ampliers) that produce heat.

9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your safety. If the provided plug does not t into your outlet, consult an electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.

11. Only use attachments/accessories specied by the manufacturer.

12. Use only with a cart, stand, tripod, bracket, or table specied by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

13. Unplug this apparatus during lightning storms or when unused for long periods of time.

14. Refer all servicing to qualied service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

15. Use the mains plug to disconnect the appartus from the mains.

16. WARNING: To reduce the risk of re or electric shock, do not expose this apparatus to rain or moisture.

17. Do not expose this equipment to dripping or splashing and ensure that no objects lled with liquids, such as vases, are placed on the equipment.

18. Do not connect the unit’s output to any other voltage source such as battery, mains source, or power supply, regardless of whether the unit is turned on or off.

19. Do not remove the top (or bottom) cover. Removal of the cover will expose hazardous voltages. There are no user serviceable parts inside and removal may void the warranty.

20. An experienced user shall always supervise this professional audio equipment, especially if inexperienced adults or minors are using the equipment.

21. The US National Differences clause 16.3 requires that network cables must be ame rated VW-1.

1.1. Approvals

This equipment conforms to the requirements of the EMC Directive 2014/30/EC and the requirements of the Low Voltage Directive 2014/35/EC.

Standards applied: EMC Emission EN55103-1, E3 EMC Immunity EN55103-2, E3, with S/N below 1% at normal operation level. Electrical Safety EN60065, Class I

This equipment is tested and listed according to the U.S. safety standard ANSI/ UL 60065 and Canadian safety standard CSA C22.2 NO. 60065. Intertek made the tests and they are a Nationally Recognized Testing Laboratory (NRTL).

1.2. Warnings

1.2.1. Explanation of warning symbols

The lightning bolt triangle is used to alert the user to the presence of un-insulated “dangerous voltages” within the unit’s chassis that may be of sufcient magnitude to constitute a risk of electric shock to humans.

The exclamation point triangle is used to alert the user to presence of important operating and service instructions in the literature accompanying the product.

1.2.2. Warnings

To prevent electric shock do not remove top or bottom covers. No user serviceable parts inside, refer servicing to qualied service personnel. Français: À prévenir le choc électrique n’enlevez pas les couvercles. Il n’y a pas des parties serviceable à l’intérieur, tous reparations doit etre faire par personnel qualié seulment.

C SERIES Operation Manual rev 3.0.0

1. Important safety instructions

To completely disconnect this equipment 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. Français: Pour démonter complètement l’équipement de l’alimentation générale, démonter le câble d’alimentation de son réceptacle. La prise d’alimentation restera aisément fonctionnelle.

To reduce risk of re or electric shock, do not expose this apparatus to rain or moisture. Français: Pour réduire les risques d’incendie ou de choc électrique, n’exposez pas l’appareil à la pluie ou à l’humidité.

Do not expose this system/apparatus to dripping or splashing and ensure that no objects lled with liquids, such as vases, are placed on the apparatus. Français: N’exposez pas ce système/appareil au ruissellement ni aux éclaboussures et assurez-vous qu’aucun objet contenant du liquide tel qu’un vase n’est placé sur l’appareil.

This apparatus must be connected to a mains socket outlet with a protective earthing connection. Français: Cet appareil doit être raccordé à une prise secteur avec terre de protection.

The mains plug is used as a disconnect device and shall remain readily operable. Français: Lorsque la prise du réseau d’alimentation est utilisés comme dispositif de déconnexion, ce dispositif doit demeuré aisément accessible.

1.2.3. Caution

To reduce the risk of  re or electric shock, do not remove screws. No user-serviceable parts inside. Refer servicing to qualied service personnel. Français: Pour réduire le risque d’incendie ou de choc électrique, ne pas retirer les vis. Aucune pièce réparable par l’utilisateur. Coner l’entretien àpersonnel qualié.

1.2.4. User responsibility

Mains connection grounding

Your amplier must be connected to a grounded socket outlet.

Speaker output hazard on ampliﬁers

Ampliers are capable of producing hazardous output voltages. To avoid electrical shock, do not touch any exposed speaker wiring while the amplier is operating. The external wiring connected to the speaker terminals shall be installed by a qualied person, or ready-made leads or cords of appropriate capacity shall be used.

As the power output channels on ampliers produce high voltage, do not connect or disconnect speaker cables when the mains power is on.

Radio interference

A sample of this product has been tested and complies with the limits for the European Electro Magnetic Compatibility (EMC) directive. This equipment has also been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference from electrical equipment. This product uses radio frequency energy and if not used or installed in accordance with these operating instructions, may cause interference to other equipment, such as radio receivers.

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

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 on and off, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the antenna.

• Increase the separation between the equipment and re ceive r.

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

• Check if the affected unit complies with the EMC limits for immunity, (CE-labeled). If not, address the problem with the manufacturer or supplier. All electrical products sold in the EC must be approved for immunity against electromagnetic elds, high voltage ashes, and radio interference.

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

Speaker damage

Amplier apparatus is very powerful and can be potentially dangerous to both loudspeakers and humans alike. Many loudspeakers can be easily damaged or destroyed by overpowering them. Always check the speaker’s continuous and peak power capabilities. Although the ampliers attenuators can be used to reduce the overall gain, an increase of the input signal can result in full output power, which may cause damage to connected speakers.

Maintenance

For safe and reliable operation, the dust  lters on both sides of the front panel, behind the grilles, should be removed and cleaned regularly to ensure maximum airow through the device.

If the dust lters are not maintained there will be safety risks; for example, high internal temperatures could ignite the dust and start a re. There is also a risk that the unit will malfunction since it is dependent on constant airow from front to rear. If the dust  lters are not clean and the unit malfunctions, any resulting problems will not be covered by the warranty.

C SERIES Operation Manual rev 3.0.0

Table of Contents

1. Important safety instructions 2

1.1. Approvals  2

1.2. Warnings  2

2. Introduction 5

2.1. Welcome  5

2.2. Main Features  6

3. Installation 8

3.1. Unpacking  8

3.2. Mounting  8

3.3. Cooling  8

3.4. Operating Voltage  9

3.5. Grounding  9

4. Product Overview 10

4.1. Front Panel Overview  10

4.2. Rear panel  12

4.3. NomadLink / Ethernet network setup  13

5. Operation and performance 15

5.1. Introduction  15

5.2. Operation precautions  15

5.3. Signal ow and headroom  15

5.4. Audio Input and Output connections, setup and features  17

5.5. GPIO connection and operation  22

5.6. Front-panel monitoring  25

5.7. NomadLink network and DeviceControl software  27

6. Appendix 31

6.1. Maintenance  31

6.2. FAQ  31

6.3. Additional documentation  32

6.4. Current Draw and Thermal Dissipation Specications  33

7. Technical Specications 38

8. Warranty and Support 39

8.1. General  39

8.2. Technical assistance and service  39

C SERIES Operation Manual rev 3.0.0

2. Introduction

2.1. Welcome

Thank you for choosing LAB GRUPPEN C Series power ampliers for your sound reinforcement system installation. We are condent that you will be very pleased with the performance, conguration exibility, reliability, and long-term durability offered by the C Series products.

This manual provides a comprehensive guide to the features and functionality of C Series model C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 ampliers. Please read through it in its entirely to become fully acquainted with the many conguration options and multiple layers of protection circuitry.

To facilitate timely installation and use of this C Series product, we have included a Quick Guide Overview (section 4). This brief summary, in conjunction with Installation (section 3), contains the basic information needed to safely install the amplier and place it in service. However, we highly recommend reading through this manual in its entirety, beginning with Main Features and Technologies and continuing through Operation and Performance. As you become thoroughly familiar with all aspects of operation, you may learn of features or options that will affect your choices on amplier modes or loudspeaker system conguration.

LAB GRUPPEN C Series power ampliers are designed and built specically for the unique demands of permanent installation applications. C Series ampliers offer the optimum combination of high-quality audio reproduction, exible features, ease of installation, and 100% reliability in normal use.

By packing four or eight channels of recongurable power amplication into a 2U chassis, the C Series achieves unprecedented power and channel density. The benets of compact dimensions include reduced rack space requirements and minimal heat build-up. The exible output stages enable each amplier channel to be set for either low impedance or constant voltage (70 V / 100 V) mode. NomadLink, an easy-to-use network for monitoring and control, is implemented as a standard feature on all C Series ampliers.

Although C Series features and facilities are tailored to installation applications, at the heart of each amplier is the same advanced technology that has made LAB GRUPPEN the benchmark of quality for touring concert systems: exceptional sonic performance, rugged construction, proven reliability, and protection features that anticipate every unwelcome possibility.

NOTE: This manual is shipped with C Series amplier models C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4. All references to “C Series” in this manual apply to all four of these models. A different manual is shipped with models C 20:8X, C 10:8X, C 10:4X and C 5:4X. References to C Series in this document may or may not apply to these C...X models.

C SERIES Operation Manual rev 3.0.0

2. Introduction

2.2. Main Features

Your new C Series amplier incorporates a number of sophisticated technologies – many of them proprietary to LAB GRUPPEN – that are provided to ensure the best possible performance and many years of reliable operation. Familiarizing yourself with these technologies will prove invaluable in setting up and optimizing your loudspeaker system.

2.2.1. Class TD ampliﬁer and Regulated Switch Mode Power Supply (R.SMPS)

LAB GRUPPEN’s patented Class TD technology combines the exceptional efciency of a Class D amplier with the high sonic quality associated with Class B designs. Class TD also incorporates the same basic concepts behind Class H designs, but here they are rened and pushed to a higher level to achieve much greater efciency.

The Class TD output sections work in concert with LAB GRUPPEN’s unique, regulated switch-mode power supply (R.SMPS) to create a superior overall power amplier topology. This ensures stable, full output power over an extremely wide range of mains voltage levels. Sagging or uctuating mains voltage will not affect the power output delivered to the loudspeakers.

2.2.2. Ampliﬁer gain

For greater exibility in system integration, C Series ampliers allow gain adjustment from +23 dB to +44 dB in 3 dB steps. This feature accommodates any combination of input device and loudspeaker type. For example, if the input signal is weak, the gain can be boosted to maintain maximum power output while avoiding a poor signalto-noise ratio. This gain adjustment feature makes it easier to achieve an optimal balance between headroom and noise oor.

2.2.3. Voltage Peak Limiter (VPL)

The Voltage Peak Limiter (VPL) feature allows user adjustments that determine maximum voltage output, thus matching the amplier to the connected speaker load. Whether the connected load is low impedance (2 to 16 ohms) or high impedance (70 V / 100 V), the VPL feature can be set to ensure that neither temperature nor current limitations are exceeded before reaching the desired voltage threshold.

2.2.4. Protection and performance optimization

Appropriate and reliable power amplication is vital to any audio system. Inadequate or faulty power amplication could cause damage to the loudspeakers, or in some cases to the power ampliers themselves. To prevent any damage or costly service interruptions, C Series ampliers offer advanced features to protect both internal circuits and any connected loads. These features even protect the mains fuse that, in extreme cases, could be overloaded.

C SERIES Operation Manual rev 3.0.0

2. Introduction

Following are short descriptions of standard built-in C Series protection features:

• CPL (Current Peak Limiter) ensures that the amplier’s output does not exceed the safe current handling

parameters of amplier components.

• Temperature protection ensures that the amplier will not be damaged by exceeding thermal limits.

• PA L (Power Average Limiter) limits the maximum average power consumption according to the power supply

and mains-breaker capabilities.

• VHF (Very High Frequency) protection circuits mute the output of the amplier when nondynamic continuous

signals above 10 kHz are detected.

• DC protection ensures destructive DC signals will not appear at the amplier outputs. If such conditions occur

an internal fuse opens and fault indication is displayed.

• Low-impedance (short circuit) protection provides a fault warning indication and shuts down the output stage

when, for example, an input signal is present and a malfunctioning cable or driver is short circuiting the output.

• High-impedance warning reports an alert when, at the same time, output signal is high and no current draw is

measured. This situation might occur when no speakers are connected, or when a driver is blown.

• Low inrush current ensures that the mains breaker will not trip when several power ampliers are turned on

simultaneously.

2.2.6. NomadLink / Ethernet control and monitoring network

The NomadLink network allows easy setup and control of C Series power ampliers and other devices. The patented network topology allows automatic detection and addressing of multiple ampliers, and is controlled from a PC via an NLB 60E NomadLink Bridge & Network Controller using standard TCP/IP communication. Phantom powering through the network cables allows the software to detect devices that are not currently turned on or connected to the mains. This ensures very high reliability and redundancy levels while allowing connected ampliers to remain on standby with no power consumption.

Cable connections can be daisy-chained for easier system setup. This also reduces total component costs, simplies installation, and makes daily operation more convenient. There is no need to create a star topology using many switches as with, for example, an Ethernet system. Individual amplier addresses do not need to be manually entered: you will automatically know where an individual amplier resides in the network.

A daisy chain network-loop, in combination with the automatic addressing of devices, enables LAB GRUPPEN’s proprietary DeviceControl software to automatically create a precise picture of all connected devices and their relative position in the chain. By quickly creating a clear overview of the entire system conguration, DeviceControl provides exible control over very large amplier systems. Set-up time is minimized, and critical information is readily available for monitoring performance and solving problems during operation.

Via NomadLink, you can simultaneously monitor all metering data as well as any fault or warning indications.. NomadLink also allows you to remotely control power on and power off, as well as engage Mute and Solo functions on individual channels.

C SERIES Operation Manual rev 3.0.0

3. Installation

3.1. Unpacking

Carefully open the shipping carton and check for any noticeable damage. Every LAB GRUPPEN amplier is tested and inspected before leaving the factory and should arrive in perfect condition. If any damage is discovered, please notify the shipping company immediately. Only the consignee may institute a claim with the carrier for damage incurred during shipping. Save the carton and packing materials for the carrier’s inspection. Should you ever need to ship the amplier, always use the original packaging materials.

3.2. Mounting

The amplier is two rack units high (2U) and will t into a standard EIA 19” rack. The depth is 343 mm (13.5”). The weight is approximately 8.5 kg (18.75 lbs.) depending on model type.

Free airow from front-to-rear of the amplier must be possible. Therefore, no doors or rack-lids should be mounted in front of or behind the ampliers.

Ampliers may be stacked directly on top of each other. There is no need for spacing in between units, though this might enable more convenient installation of cabling on the rear panel.

3.3. Cooling

The amplier uses a forced-air cooling system with air ow from front to rear, maintaining a low operating temperature within dened limits. Front-to-rear airow is preferred as cooler air is present at the front in nearly all applications. (This allows higher continuous power levels without encountering thermal problems.) Never attempt to reverse the airow. The amplier modules require a pressure chamber between the fans and heat sink, and this effect functions only in one direction.

Make sure that there is an adequate air supply in front of the amplier, and that the rear of the amplier has sufcient space to allow the exhaust to escape. If the amplier is rack-mounted, do not use covers or doors on the front or rear of the rack.

Should a heat sink overheat, the temperature sensing circuits will mute the overheating channel. If the power supply overheats, another sensing circuit will mute all output channels until the power supply cools to safe operating temperature. An early warning before shut down will be indicated on the front panel LEDs, and a warning will be sent through the NomadLink network.

Always make sure that the dust-lters behind the detachable front panel are clean to ensure maximum possible airow.

NOTE: If the amplier malfunctions due to dirty dust lters, any required repairs are not covered by the warranty.

C SERIES Operation Manual rev 3.0.0

3. Installation

To calculate the maximum heat emission value when installing the ampliers in rooms with an air-conditioning system, please refer to the Current Draw and Thermal Emissions specications provided in the Appendix (section 6.4).

3.4. Operating Voltage

The label placed to the right of the mains cable on the rear of the amplier indicates the AC mains voltage for which the amplier is wired and approved: 115 V or 230 V. Connect the power cable only to the AC source type referred to on the label. The warranty will not cover damage caused by connecting to an incorrect type of AC mains.

LAB GRUPPEN switch-mode ampliers use primary switching. Because the mains power is rectied directly in front of the transformer, the amplier is insensitive to mains frequency. It may be connected to 50 or 60 Hz sources, and actually will operate on line frequencies from DC to 400 Hz.

If the power plug mounted at the factory is not appropriate for your country, it can be removed and the proper connector wired in its place as follows:

BLACK or BROWN LIVE WHITE or BLUE NEUTRAL GREEN or GREEN/YELLOW EARTH (GROUND)

If you are not 100% condent of your competence to replace the mains plug, engage qualied personnel to do the job.

Once a suitable AC supply is connected, the amplier can be turned on using the front-panel power switch. The amplier then goes through a soft-start sequence as it self-checks its circuits. The fans will blow at high speed before dropping to idle, and the “power” LED will illuminate.

Inrush power is controlled and limited during “soft start”, enabling multiple ampliers to be powered up simultaneously.

3.5. Grounding

There is no ground lift switch or terminal on the C Series ampliers. The signal ground is always oating, via a resistor, to chassis and therefore the grounding system is automatic.

In the interests of safety, never disconnect the earth (ground) pin on the AC power cord.

Use balanced input connections to avoid hum and interference.

C SERIES Operation Manual rev 3.0.0

4. Product Overview

4.1. Front Panel Overview

The amplier’s front panel presents the performance and fault condition indicators, power and remote switches, and a removable dust-lter cover. Four level potentiometers located behind the cover provide individual attenuation for the four amplier channels. Range is 0 dB to - innity. The 12 o’clock position indicates -10 dB attenuation. A label area is located beneath the LED display.

To remove the dust-lter cover, loosen the thumbscrew at the far left. This allows removal of the dust-lters for cleaning, and provides access to channel attenuation. The front cover may be made “tamper resistant” by replacing the thumbscrew with a Philips head or safety Torx screw. Thread size is M3.

NOTE: Never operate the amplier without the dust-lters in place.

4.1.1. Power on/off and remote switch

The Power on/off switch is located on the right side. A second switch, labeled “REMOTE,” is located above the Power switch. When the Remote switch is on, (with the mains connected and power switch turned on) the yellow LED above it will illuminate indicating that external power on/off commands from the NomadLink network connection will switch the amplier on or off. When Remote is activated the amplier will not switch on until a “Power On” command is received from the network. When the remote switch is off, it is not possible to switch amplier power on or off using NomadLink network control.

C SERIES Operation Manual rev 3.0.0

4. Product Overview

PAL

4.1.2. Front-panel LED’s

The front-panel LED area includes the following indicators per channel:

• Temperature mute (Yellow constant)

• VHF (Very High Frequency) protection active (output muted) (Yellow)

• Mute channel via NomadLink network (2x Yellow)

• CPL (Current Peak Limiter) active (Orange ashing)

• CPL (Orange constant with output muted): constant (output muted): Low impedance / short circuit

detection

• Fault (Yellow plus Orange)

• VPL (Voltage Peak Limiter) active, VPL/Clip (Red)

• 4 dB signal level (Green)

• -10 dB signal level (Green)

• -40 dB signal level (Green)

• Hi-Imp open load detected (Red)

• Bridge mode operation on (Yellow). Ch. A+B, C+D, E+F, G+H bridged.

(PWR) Power on (Green)

(PAL) Power Average Limiter active (Red)

Option active (Yellow)

NomadLink network active (Blue)

NOTE: When no VPL, CPL or PAL indicators are illuminated, and the VPL DIP-switch is set to maximum at the specied nominal load, the amplier channel is able to deliver maximum rated output power.

NOTE: When the network is connected, the blue NomadLink LED will illuminate even when mains power is not connected. NomadLink receives phantom power from the network supplied by the NLB 60E.

C SERIES Operation Manual rev 3.0.0

4. Product Overview

4.2. Rear panel

C 88:4

200-240V 50-60Hz :2500W

Must be grounded/earthed

Made in Sweden

Mains input 115 V

and 230 V operation

(Not selectable)

NomadLink network

EtherCon-housed RJ45 connections

4.2.1. The DIP-switch features

In and Out on

44dB 41dB 38dB 35dB 32dB 29dB 26dB 23dB

*100V

71V

141V*

59V

118V

50V

100V**

42V

85V

**70V

rms

BALANCED INPUTS

CH D

DIP-switches for

adjusting key features

(see below)

Removed!

Ser. N:o

CH BCH C CH A

3-pole Phoenix

input connectors

SPEAKER OUTPUTS

WIRING NORMAL: CLASS 2 BRIDGED: CLASS 3

2-pole screw

terminal output

connections

The following features may be adjusted using the DIP-switches on the rear-panel of the amplier.

Gain - Set for all four or eight channels from +29 to +38 dB in 3 dB steps.

Fan Masked - When on, engages the intelligent fan feature; fan speed is lowered when no signal is present.

Bridge Mode - Switches the channel pairs into bridge mode operation. An automatic -6 dB gain compensation is

applied.

VPL - Voltage Peak Limiter adjustment is provided for 8 individual levels. Select the setting most appropriate for connected speakers. See Appendix for details.

Mode - Select VPL mode between Hard and Soft. For channels driving sub-woofers and low-end frequencies, it is recommended to use the Hard setting for optimal operation. For mid- and high-frequency drivers, always select Soft.

C SERIES Operation Manual rev 3.0.0

4. Product Overview

4.3. NomadLink / Ethernet network setup

The amplier includes, as a standard feature, internal facilities for the NomadLink monitoring and control network. All features of the NomadLink network are accessible via a PC running LAB GRUPPEN’s proprietary DeviceControl software. A single rackspace NLB 60E NomadLink Bridge & Network Controller accepts the TCP/IP data stream from the computer and converts it to the NomadLink protocols. Even when no computer is connected, the NLB 60E can initiate stand-alone power on/off and muting functions, as well as report any fault or warning conditions.

The PC is connected to the NLB 60E using a standard Ethernet interface and a crossed Cat-5 cable (peer-topeer setup). If a hub or switch is in the network, standard “straight” Cat-5 cables must be used. The front and rear Ethernet connections on the NLB 60E can be used individually, but only one PC at a time running DeviceControl can access the subnet.

NOTE: Many newer laptop computers will allow peer-to-peer connection with the NLB 60E using a standard “straight” Cat-5 cable instead of a crossed cable.

The default xed TCP/IP address of the NLB 60E is 192.168.1.166. The subnet mask is 255.255.255.0. For further system conguration details, please refer to instructions supplied with the NLB 60E unit.

The NomadLink connections between ampliers use standard “straight” Cat-5/RJ45 equipped cables.

NOTE: US National Differences cl.16.3 requires that NomadLink network cables must be rated VW-1.

The OUT port from the NLB 60E must be connected to the IN port of the rst amplier. The OUT port from the rst amplier in turn connects to the next amplier’s IN port to form a daisy-chain The OUT port on the last amplier is connected to the IN port on the NLB 60E to close the loop.

NOTE: There are performance limitations to cable lengths on a NomadLink network, both in terms of total cable length in the loop and between any two devices. These limitations follow standard Ethernet cabling protocols. Read the Operation and Performance chapter in this manual, or the Operation Manual supplied with the NLB 60E, to ensure the network is congured within these constraints.

TIP: Although the network will function as an open loop under most circumstances, it is strongly recommended that the loop be closed by connecting the last amplier’s OUT port to the NLB 60E’s IN port. Doing so will improve redundancy and communication speed.

External contact closures and 24 V low/high triggers can be connected to the GPI connectors on the NLB 60E for control of re-alarm systems or external power sequencers. For more details read the instructions supplied with the NLB 60E.

C SERIES Operation Manual rev 3.0.0

4. Product Overview

IN OUT

NOMADLINK

IN OUT

NOMADLINK

IN OUT

ETHERNET

GENERAL PURPOSE INPUT, GPI

ETHERNET

Crossed RJ45 Ethernet cable between NLB 60E and PC. If bridge is connected to switch of HUB, use " straight " cable. PC can also be connected on front panel.

" Straight " RJ45 cables between bridge and ampliﬁers

C SERIES Operation Manual rev 3.0.0

5. Operation and performance

5.1. Introduction

The following sections provide comprehensive information on amplier connection, setup, operation, and performance. The detailed information included here is essential to realizing the full functionality of the C Series ampliers.

5.2. Operation precautions

• Make sure that the Power switch and the Remote switch on the amplier front-panel are set to “off” before making any input, output or network connections, and also before manipulating the DIP-switches on the rear-panel.

• Make sure that the AC mains voltage is correct and matches the voltage printed on the rear-panel of the amplier (115 V or 230 V).

• Make sure that no signal is present at the input to the amplier when powering up. This could produce an unintentionally loud initial volume from the speakers.

5.3. Signal ﬂow and headroom

5.3.1. Signal ﬂow blocks

All C Series ampliers have the same signal ow and feature set. The only difference is the amplier’s maximum output current per channel.

The input stage of all C Series ampliers has a high sensitivity to provide ample system headroom. This in effect means that the input stage is almost impossible to clip.

Overall amplier input gain is adjusted using the input stage DIP-switches. Please note that the gain setting is global, affecting all four channels. Following the input stage, the dedicated level control on each channel allows signal attenuation from 0 dB to minus innity.

The CPL (Current Peak Limiter) section dynamically limits the input signal based on three parameters: sensed current level, feedback from the output stage, and sensed voltage clip from the VPL (and output amplier voltage clip if “Soft Clip” activated). This ensures that power output is maintained within the design limits of the amplier.

The adjustable VPL (Voltage Peak Limiter) sets the maximum output voltage and therefore also the maximum output power. Eight (8) different voltage stages are available using the DIP-switches on the rear-panel. See table in Appendix section with VPL ratings at typical loads.

The sophisticated output section monitors faults and generates appropriate warnings, which are displayed on the amplier front-panel and transmitted through the NomadLink network. These alerts allow the operator to

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5. Operation and performance

adjust system settings and thereby avoid problems. In the rare event that conditions are extraordinarily severe, the amplier will shut down until the fault or problem setting has been rectied or adjusted. These sensing circuits are also employed to feed back voltage and current level information, via a side chain, to the limiters. Sensing circuits also transmit local amplier module temperature and power supply temperature to the appropriate protection mechanisms. Read the Protection, Faults and Warnings section for further details.

5.3.2. Headroom, sensitivity and VPL / Gain settings

The input amplier and limiter system is designed to accommodate extremes of performance. Typically, exceeding maximum input by much as +10 dB will only result in a 1% increase in distortion. The following schematics illustrate how the adjusable VPL and Gain circuitry affect input sensitivity and output power:

The tables to the left of the drawing below show input sensitivity for a C 68:4 with an 8 ohm load and 141 V peak (max.) and 42 V peak (min.) respectively for the eight different gain stages between +23 dB and +44 dB. The resulting output power is displayed in dBu, Vrms and Watts in the tables to the far right. Complete input sensitivity tables for all VPL and Gain settings for as applicable to C Series models can be found at www.labgruppen.com.

The headroom available through the input stage to the clip limiter is shown by the dotted lines as +10 dB at 141 V peak and +20.4 dB at 42 V peak. These lines illustrate the additional signal level that can be accepted at the input before any signicant distortion will appear at the input stage.

NOTE: If you use the level potentiometer in the signal chain to reduce the level by an amount greater than the headroom relative to input sensitivity, AND you drive the amplier to clip level, you are in danger of clipping the input stage before the current or voltage peak limiters are activated.

NOTE: When bridging two channels, you must add +6 dB to the input sensitivity to achieve maximum output voltage due to the automatic -6 dB gain compensation inserted by the amplier.

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5. Operation and performance

5.4. Audio Input and Output connections, setup and features

5.4.1. Balanced / Unbalanced Input connection

Two electronically balanced Phoenix-type inputs are available. Follow the +,– and Ground labels when connecting the input signal.

If an unbalanced connection is desired this can be achieved by summing the minus (“COLD”) and Ground terminals and using the + terminal as the “HOT” signal. For the best possible performance, the summing of ground and minus wires should be done at the source unit end of the cable (e.g. a CD player).

Four connectors are supplied for attaching cables to the inputs. The type of connector used is: Phoenix Contacts, Part number MSTB 2,5/3-STZ-5,08.

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NOTE: When linking the same source signal to several input channels, be aware that there is a limit to the number of channels an output source can “drive”. A typical output source (e.g. a DSP crossover unit) can drive up to four amplier channels before external line-drivers might be required to buffer the signal.

5.4.2. Output operation and connection

Screw-terminal connectors with + and – poles are provided at each channel output for connection of the speakers.

Make sure that the speaker cables are connected correctly and tightly, and that accurate polarity is maintained to all speakers in the system.

As the amplier outputs produce high voltage, do not connect or disconnect speaker cables when the mains power is on. Also, attach the safety cover on the speaker terminals for safe operation and to comply with electrical product approvals.

5.4.3. Output bridge mode

It is possible to bridge channels in pairs of two (A+B and C+D for example). When bridged, the input source must be connected to input A (A+B) or C (C+D) respectively. Output speaker cables must be connected to the plus pole on channel A or C and the minus pole on B or D.

The main benet of bridging the output is a doubling of output voltage. Bridging can be used to turn the amplier into a three-channel amplier with, for example, 2 x 1200 W and 1 x 2400 W at 4 ohms utilizing the C 48:4, or simply to achieve an impressive 200 Vrms supply per channel.

Most power amplier designs, when bridged, automatically introduce a +6 dB input gain boost which can lead the user to conclude that said amplier delivers “more than double the power” when in bridge mode. This is clearly not the case, as the gain boost articially enhances perceived power at the cost of headroom. The C Series ampliers work on globally set constant gain, and automatically compensate the input gain by -6 dB. For example, if the amplier is congured in a three-channel mode, then the selected gain is maintained from input to output on all channels.

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5.4.4. Ampliﬁer Input Gain

All C Series ampliers feature adjustable input gain. This versatility enables the amplier to accommodate a multitude of system congurations with various input sources and speaker layouts.

Amplier gain is set globally for all four channels. The range is +23 dB to +44 dB in 3 dB steps. Individual channel ne level adjustment is available using the potentiometers on the front panel.

The unique adjustable input gain feature of the C Series makes it easier to attain the optimum balance between headroom and signal-to-noise ratio in the signal path. A weak signal at the input might require the gain to be raised in order to achieve maximum output power with the lowest signal-to-noise ratio. A “hot” input signal, however, would require a lowering of the gain to avoid sending the amplier into Voltage or Current clipping.

See Appendix to review the table containing Gain versus VPL setting implications for input sensitivity and output power.

NOTE: Bridge mode operation automatically compensates by -6 dB, keeping all channels at the same gain.

5.4.4.1. Channel gain/level (front-panel pots)

Individual channel gain (level) may be adjusted using the potentiometers located on the front-panel behind the dust lter cover. Range is from 0 dB to -innity in 21 steps. The attenuation is logarithmic, with the 12 o’clock position indicating -10 dB.

Use your ngers or a screwdriver to adjust the potentiometers.

NOTE: If the level control is used to attenuate to a lower level than the headroom relative to input sensitivity AND the amplier input is driven into clip, there is a danger of clipping the input stage before the current or voltage peak limiters are activated.

5.4.4.2. Ampliﬁer sensitivity

Sensitivity is dened as how many volts (rms) or dBu (referred to 0.775 Vrms) are required to achieve full (maximum) output power. As the output power varies with the load impedance, 4 ohms is usually the common reference.

Since C Series ampliers are capable of providing multiple maximum output power levels through use of the VPL feature, many sensitivity calculations may be required for a single amplier. We recommend use of the DeviceControl software to simplify this process. DeviceControl’s Device View page, used in combination with the DIP-switch settings display, will automatically produce a sensitivity calculation from the given data (VPL, Gain and load).

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V peak Vrms

141 100

118 84

100 70

85 60

71 50

59 42

50 35

42 30

5.4.5. Output Voltage Peak Limiter (VPL)

The Voltage Peak Limiter (VPL) is a unique feature in C Series ampliers. It is used to select the maximum power available on each output channel. Four levels can be set using the DIP-switches on the amplier’s rear panel.

The values for VPL are displayed as maximum Voltage Peak. To translate Voltage Peak into Vrms, you must divide the Voltage Peak values by 1.41 (see table).

The VPL allows you to set the correct maximum output peak power for optimum performance with the connected speakers. The correct setting depends on the system type (low or high impedance) and the specic load connected to the channel. Since each channel can be congured to deliver either very high voltage peak power OR high current draw at low impedances, it is important to set the VPL correctly.

To congure an individual output channel for a constant voltage system, you simply adjust the DIP-switches to the desired voltage. However, when using an output for a low-impedance system ( 4, 8 or 16 ohms), then you may need to adjust the VPL to a lower setting to avoid either delivering excessively high continuous power to the speaker or overheating of the output channel through high current draw. For example, with a very “hot” continuous output signal, the temperature could rise to a critical level and activate Temp warning or even Temp Mute. Lowering the VPL setting usually will solve this situation.

If the Current Peak Limiter is active or indicates low impedance, lowering the VPL setting can rectify this situation as well.

5.4.6. Constant voltage 70 V and 100 V systems setup and operation

When using C Series ampliers to drive constant voltage (high-impedance) speaker systems at 70 Vrms or 100 V peak, you can in most cases simply connect the speakers to the amplier output terminals, select the correct VPL setting, and place the amplier in service.

5.4.8. Output Current Peak Limiter (CPL)

The Current Peak Limiter (CPL) ensures that the amplier will not be damaged by trying to deliver current to the outputs exceeding the physical limitations the transistors. The CPL keeps the amplier within the Safe Operating Area. The CPL is non-adjustable and has different limit values depending on model type. The maximum output current values for the four C...X models are:

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5. Operation and performance

• C 88:4, 35.5 Arms per channel

• C 68:4, 24.5 Arms per channel

• C 48:4, 17.5 Arms per channel

• C 28:4, 12 Arms per channel

• C 16:4, 8.5 Arms per channel

CPL activity is indicated by illumination of an orange LED for each channel on the front-panel. Warnings also are shown in the DeviceControl software’s GUI.

A steadily illuminated orange CPL LED indicates a short circuit situation (or very low impedance). The output will mute for 6 seconds before measuring the output impedance again. This will continue until the short circuit is xed, at which time the output will automatically un-mute. An input signal must be present to allow detection of short circuit or low impedance conditions.

TIP: If the CPL LED is steadily illuminated orange while the output is muted and the -4 dB signal LED is NOT on, then the amplier output is detecting a short circuit or low impedance condition. The problem can be solved by checking input and output cables and examining the state of the loudspeaker load. If there is no short circuit present, then the condition may be rectied by lowering the VPL or input levels.

If the CPL indicator is lit continuously, then the amplier is delivering excessive current and is being forced into a current limiting state (output muted).

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20 Hz 10 kHz 20 kHz

30 kHz

5.5. GPIO connection and operation

5.5.1. Introduction

The C Series ampliers incorporate a sophisticated and comprehensive set of protection features. Faults and warnings are indicated on the front-panel and reported via the NomadLink network for indication on the DeviceControl GUI.

5.5.2. Safe Operating Area Detector (SOAD)

The Safe Operating Area Detector (SOAD) compares output voltage against output current to ensure that the output transistors are working inside their safe operating area.

The SOAD provides fault monitoring and input to the Current Peak Limiter (CPL). The SOAD has no dedicated indicator, and its operation is revealed only in conjunction with features such as the CPL.

5.5.3. Very High Frequency protection

All C Series ampliers include protection circuits that detect continuous Very High Frequency (VHF) content in the input signals. The detection begins at approximately 10 kHz and moves upwards to include ultrasonic signals. If VHF signals are detected, the output will mute for 6 seconds before re-measuring. Once no continuing VHF signal is detected, the output un-mutes and returns to normal operation.

This feature recognizes that continuous full-scale VHF signals do not appear in “natural” sources such as music. Any such signals can therefore be considered as a fault when present. VHF protection is essential for avoiding damage to high frequency drivers.

The VHF protection operational area is dependent on output power level and frequency. The illustration below shows a decreasing threshold on the output power level, starting at approximately 10 kHz and rising with a -6 dB slope. This denes the VHF protection area. When continuous output power above the threshold line is detected the VHF protection becomes active.

Output

power

20 Hz 10 kHz 20 kHz

- 6 dB slope

VHF protection

operation area

Max. Peak output power

Max. Continous output power

30 kHz

Slow

Fast

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Attack time

VHF protection

5. Operation and performance

The Attack time for the VHF protection is increasingly shorter at higher frequencies. For example, an ultrasonic continuous signal will cause the outputs to mute rapidly, where it will take several milliseconds for a 10 kHz continuous signal to trigger the output mute. This is shown in the illustration above.

The VHF protection is NOT a limiter and does not alter the amplier’s frequency response. It is implemented solely to detect continuous VHF content. The amplier will always pass VHF peaks at full power, with no effect on musical “transients”.

The VHF protection is indicated by a yellow LED on the amplier front-panel, with output muting for six seconds when in action. It is reported as a fault via the NomadLink network on the DeviceControl GUI.

TIP: If you bench test the amplier using a continuous, full scale sine-wave input above 10 kHz, the VHF protection will activate and prevent measurement of full peak output power. (Output will be muted long before maximum output power is attained.) To measure the true peak output power, use a burst signal.

5.5.4. DC protection

DC protection is implemented on each output to prevent damage to connected loudspeakers. DC present at the output will trigger muting and illuminate the fault LED indicator. Any DC present at the output indicates a hardware malfunction that requires servicing of the amplier.

5.5.5. High-impedance warning (open load)

A high-impedance (open load) condition is indicated when an input signal above approximately -29 dB is detected and no functioning loudspeakers are connected to the amplier. The fault in indicated by a red Sig/Hi-imp LED. The indicator is green when a valid load is present under the same input signal conditions.

NOTE: Since the high-impedance detection initially triggers only when the input signal rises above

-29 dB, it might cause the indicator to rst turn green, and then red, even in situations where no speaker is connected.

5.5.6. Low-impedance protection (short circuit)

A low-impedance or short-circuit fault is detected when current draw is high (Current Peak Limiter active) and when, simultaneously, output signal is low (-4 dB LED does not illuminate). When this occurs, the amplier protects the output stage from damage by muting the output signal and bypassing the circuits. Indication of this fault is a constant orange illumination of the Current Peak Limiter (CPL) LED on the front-panel. The protection will sequence

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at six second intervals to re-measure conditions. If the low-impedance fault is no longer detected, the amplier will un-mute.

NOTE: If the CPL turns constant orange, the output is muted, and the -4 dB signal LED is ON, then the amplier has gone into maximum current protection. This situation is caused by an excessive input signal and is not due to a short circuit. Turn down the input signal to avoid or remedy this situation.

5.5.7. Temperature protection

Thermal measurement points are provided on each output channel as well as on the power supply. If these sensors detect temperatures above the specied maximums, a high temperature warning will be indicated by a ashing Temp LED on the front panel. The warning also will be transmitted to the Device Control GUI via the NomadLink network.

As the amplier approaches a thermal protection threshold, the warning LED sequence will start with short “ontime” bursts. If the amplier continues to overheat and approaches the temperature limit, the ashing sequence will be dened by longer and longer on-time bursts until the protection mode is activated.

If the temperature becomes too high to continue safe operation, the overheated output channel(s) will be muted until the temperature returns to an acceptable level.

Fully active temperature protection (with muting) is indicated by a constantly illuminated Temp LED. It will also be indicated as a fault via the NomadLink network on the DeviceControl GUI.

Temperature measurements will continue at six second intervals. The output will un-mute when the channel or power supply returns to a safe operating temperature.

5.5.8. Power Average Limiter (PAL)

The Power Average Limiter (PAL) controls the current-drawing relationship between the power supply and the mains inlet. PAL limits the maximum average power consumption according to the power supply capabilities, ensuring that the PSU will not overload. In addition, in the larger models that potentially could pull more current from the mains than the mains fuses are specied to handle (more than 16 A), PAL limits the amplier’s maximum current draw to prevent blowing the mains fuse.

5.5.9. Soft-Start

High powered ampliers with inadequate inrush limiting can pull considerable current from the mains at turnon. This can result in fast acting mains breakers tripping. Such is not the case with C Series ampliers in most circumstances.. The C Series ampliers have very low inrush power as the capacitors are charged slowly, and in a controlled manner, ensuring that breakers will not trip.

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Several ampliers will, under normal conditions, be able to be powered up simultaneously. If you do experience problems powering up multiple ampliers simultaneously (normally experienced only in very large installations), use the NomadLink network and the NLB60E to establish a power sequence with pre-set delays before the start-up of each subsequent amplier.

5.6. Front-panel monitoring

5.6.1. Level indicators

Four signal/level/clip LEDs per channel are contained on the C Series front panels

• Orange CPL (Current Peak Limiter) ashing indicates signal exceeds the limits of the output devices and limiting is in effect.

• Red VPL/CLIP indicates that the signal has exceeded maximum output voltage. (Maximum voltage is determined by rear-panel VPL settings.)

• Green - 4 dB indicates output signal has reached this level.

• Green - 10 dB indicates output signal has reached this level.

• Signal / Hi-Imp (Green/red) indicates an output signal above -44 dB. If it turns RED, this indicates that a

high-impedance (“open” connection) has been detected at the output. This can be a fault such as a disconnected cable or malfunctioning loudspeaker driver. However, it could indicate acceptable high impedance, such as a sub-bass enclosure with high impedance at a certain frequency. When the -10 dB signal LED is on AND the Hi-Imp LED turns red then the amplier has detected an open load (no speaker is connected).

For more detailed signal level indications use the DeviceControl software application.

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Step Attenuation Step Attenuation

1 (Min) -Inf. d B 12 - 8.7 dB

2 -Inf. d B 13 -7.4 dB

3 -50 dB 14 -6.0 d B

4 -40 dB 15 -4.5 dB

5 -35 dB 16 -2.7 dB

6 -2 1.5 dB 17 -0.6 dB

7 -2 1.5 dB 18 -0 .3 dB

8 -14.7 dB 19 - 0.1 dB

9 -1 2. 9 dB 20 0 dB

10 -11.4 dB 21 (Max ) 0 dB

11 -10.0 dB

5.6.2. Level adjust

Level adjust potentiometers (one per channel) are located behind the removable dust-lter cover on the amplier’s front-panel. It is not possible to adjust the level settings with the cover in place.

The potentiometer’s operational range is 0 dB to -innity in 31 steps. Attenuation is logarithmic, with 12 o’clock position being -10 dB. See table to the above with increments.

It is not possible to adjust the individual channel attenuation from the NomadLink network or elsewhere on the amplier.

Use ngers or a screwdriver to adjust the potentiometers.

5.6.3. Mute indication

Individual channel Mute is indicated by illumination of the two yellow LEDs at the top of the channel’s LED bargraph. If both LEDs are illuminated and all other indications are normal, then the channel has been muted by a command from the NLB 60E front-panel or the DeviceControl application. Otherwise, a Mute could indicate a fault condition.

5.6.4. Performance, Warning and Fault indicators

• Power on/off (green) indicates that mains power is switched on.

• NomadLink (blue) indicates that the network is connected. The NomadLink LED will light up even before the mains power is connected and switched on as it takes phantom power from the NomadLink network cable.

• Bridge mode (yellow) indicates if two channels are bridged using the DIP-switch on the rear panel.

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• CPL, Current Peak Limiter (orange), when ashing indicates the maximum possible current draw has been reached.

• CPL, Current Peak Limiter (orange), when constant indicates excessive current draw caused by a short circuit on the output or very low operational impedance. When detected, the output will mute for six seconds before re-measuring the output impedance. This will continue until the short circuit is removed. CPL remains constant orange in a fault condition only when an input signal is present.

• Temperature (yellow) warning is indicated by a ashing LED. If the amplier goes into thermal protect (output muted) the LED illuminates constant yellow.

• VHF, Very High Frequency protection (yellow), indicates that potentially harmful continuous high frequencies have been detected on the input signal. The output is muted.

• PAL, Power Average Limiter (red), indicates that the amplier is limiting because the power supply and/or the mains-inlet fuse has reached maximum capability.

• Hardware fault is indicated when both the CPL and VHF indicators light up simultaneously. The amplier requires servicing before being placed back in operation.

5.7. NomadLink network and DeviceControl software

5.7.1. NomadLink network in the ampliﬁers

All C Series ampliers are equipped with the proprietary NomadLink network interface. This includes two RJ45 connections in standard housings: one IN and one OUT.

Use standard straight Cat-5 Ethernet cables with RJ45 connectors to connect the amplier to the NLB 60E NomadLink Bridge and Network Controller or to daisy-chain multiple ampliers.

NOTE: It is very important that two IN or two OUT ports are NEVER connected to each other. This will cause the NomadLink communication and DeviceControl to exhibit erratic behavior and display inaccurate data. However, this situation will not damage the amplier circuitry.

Up to 60 ampliers can be connected to one NLB 60E in a daisy-chain or closed loop.

When the NLB 60E is powered up, the NomadLink network receives phantom power. This causes the blue NomadLink LED on the amplier front panel and the NomadLink LED on the rear panel to light up. NomadLink is active even when the amplier has mains power disconnected or is not yet powered up.

The amplier does not have a stand-by power supply for the network. The network is solely powered from the NLB 60E. Should an amplier fail or be inadvertently disconnected from the mains, network integrity is fully maintained and all ampliers remain visible on the system.

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5.7.2. Connection and setup

The NomadLink network requires use of an NLB 60E NomadLink Bridge & Network Controller. The NomadLink network is established by connecting the NLB 60E OUT port to the rst amplier’s IN port. Then a daisy-chain is established by connecting the rst amplier’s OUT port to the next amplier’s IN port, and so on. If a closed loop network is desired for improved redundancy (highly recommended), the last amplier’s OUT port must be connected to the NLB 60E’s IN port.

For all connections, straight Cat-5 RJ45-equipped Ethernet cables should be used.

TIP: Optimal NomadLink performance can only be assured when using Cat-5 cables. However, as NomadLink is only using two wires + ground for communication and phantom power it is possible to create converters from RJ45 to, for example, XLR connectors using 2-wire shielded cable. The NomadLink network can then be operated using a standard tie-line in a multicore signal distribution system. See the drawing below for an example of how to create a converter.

NOTE: If any cable format or connection other than Cat-5 (or better) and RJ45 is utilized, network performance may be compromised. In this event LAB GRUPPEN cannot guarantee that the NomadLink network will be fully operational.

5.7.3. NomadLink network cable lengths

The connection between the NLB 60E and your PC is a standard Ethernet network running the TCP/IP protocol. Cable distances between NLB 60E and your PC follow standard rules for Ethernet systems.

In situations where the ampliers and the NLB 60E will be positioned in different locations at some distance from each other, or where groups of ampliers within a single subnet with up to 60 units will be installed with a distance in between, these general rules applying to Ethernet cabling limitations may be considered.

• Rule 1: The maximum cable length in between any two devices may not exceed 300 meters / 980 feet.

• Rule 2: In a non-closed-loop daisy-chained subnet the total maximum cable length is 400 meters / 1300 feet.

• Rule 3: In a closed-loop subnet the total maximum cable length is 700 meters / 2300 feet.

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5.7.4. Ethernet network cable lengths

The connection between the NLB 60E and your PC is a standard Ethernet network running the TCP/IP protocol. Cable distances between NLB 60E and your PC follow standard rules for Ethernet systems.

Contact your an IT expert or an authoritative source for more details.

Below are typical examples of NomadLink network setups:

NomadLink daisy chain conguration

NomadLink closed loop conguration

NomadLink closed loop daisy chain conguration

NomadLink dual daisy chain closed loop conguration

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5.7.5. DeviceControl software

DeviceControl is LAB GRUPPEN’s proprietary software application for monitoring and controlling networked FP+ Series and other LAB GRUPPEN NomadLink-ready power amplier. DeviceControl runs on a Windows PC, which connects via Ethernet to the NLB 60E NomadLink Bridge & Network Controller. DeviceControl provides comprehensive monitoring of amplier status as well as control of amplier power on/off and individual channel mute and solo functions.

Please review the DeviceControl Operation Manual for more detailed information.

5.7.6. Third Party Control and Monitoring Capabilities

The NLB 60E NomadLink Bridge & Network Controller can be integrated with third party control systems via its Ethernet connection. All amplier control functions, fault and warning notications that would otherwise be displayed via the DeviceControl software can be replicated in a third party control GUI.

Please note that NLB 60E Firmware Ver 2.1.0 (or later) must be used in order to utilize the third party control and monitoring capabilities of the NomadLink network. Both the rmware package and the control protocol documentation, which describes the functionality and programming requirements for third party integration, can be found under the Software & Firmware section of our website at: http://labgruppen.com/index.php/support/software_rmware/

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6. Appendix

6.1. Maintenance

During normal operation your C Series amplier will provide trouble-free service. The only user maintenance required is to periodically vacuum clean the foam dust lters behind the front grille.

In some extreme cases it may be necessary for authorized service personnel to clean the inside of the amplier. These conditions usually occur after prolonged use in extreme environments such as those using “cracked oil” smoke machines. If you are using your amplier in a heavy duty application, it is recommended to have your amplier serviced every three years purely as a preventative action.

6.2. FAQ

Following are common questions asked about LAB GRUPPEN C Series power ampliers together with helpful answers.

Q: What is the input sensitivity of the ampliers? A: Input sensitivity is calculated from the amplier gain, maximum output voltage and load. As gain and output

voltage are adjustable in C Series ampliers, you need to look this information up in a table found in the Appendix section of this manual. Input sensitivity also is automatically calculated in the DeviceControl software application.

Q: What are the maximum cable lengths allowed when using the NomadLink network? A: NomadLink uses a daisy-chain topology to connect ampliers and an NLB 60E in a network. Standard RJ45-

equipped Cat-5 cables are used throughout. The daisy chain may be made into a closed-loop by connecting a return cable to the NLB 60E from the last amplier.

General rules of cable lengths:

• The maximum cable length in between any two devices may not exceed 300 meters / 980 feet.

• In a non-closed-loop daisy-chained subnet the maximum cable length is 400 meters / 1300 feet.

• In a closed-loop subnet the maximum cable length is 700 meters / 2300 feet.

Exceeding these limits may result in lost contact with the devices, or loss of phantom powering due to cable resistance.

Q: How long can cable-runs be on the Ethernet network connecting the NLB 60E to the PC? A: On the Ethernet side, normal Ethernet cable limits apply. This is typically a maximum of 80 meters / 300 feet

between each device. Follow standard installation procedures for Ethernet. Distances beyond 100 meters may require use of a repeater, a format converter, or optical cables.

Q: Why is the NomadLink network a closed-loop topology? A: Technically speaking, the closed loop is optional. The purpose of closing the loop is primarily to provide a

secondary path to the ampliers. If cables are broken or disconnected in either direction, all ampliers still may be addressed by the network.

C SERIES Operation Manual rev 3.0.0

6. Appendix

Q: How can I be sure that no protection circuits or safety functions interfere with the output signal? A: If no Clip or Warning LEDs on the front panel light up, you can be fully condent that the rated maximum output

power in the full frequency range is available for your speakers. No limiting or gain-reduction takes place without a warning or fault indication.

6.3. Additional documentation

In case you didn’t nd what you were looking for in this Operation Manual, check out the website at www.labgruppen.com, where you can nd a multitude of additional documentation for C Series.

C SERIES Operation Manual rev 3.0.0

6. Appendix

TEMP

MUTE

BRIDGE BRIDGEBRIDGE BRIDGE

MUTE

FAULT FAULT

TEMP

POWER

PAL

OPTION

CH|A CH|B CH|C CH|D

VHF VHF CPL CPL

VPL | CLIP VPL | CLIP

-4dB -4dB

-10dB -10dB

SIG | HI-IMP SIG | HI-IMP

C88:4

POWER

REMOTE

C SERIES

LABEL AREA

Current Draw and Thermal Dissipation

C Series: Dedicated Installation Ampliﬁers

C 88:4

Level Load Rated power Lin e Current *2) Wat t *1) Thermal Dissipation

115 V AC 230 VA C In Out Dissipated BTU/hr kCal/ hr

Standb y with remote power off via N omadLink 0 0 0 0 0

Powered on, idling. 139 0 139 475 12 0

Amp (I) Watt

Pink no ise (1/8 rate d powe r)

8 Ω / Ch. 12 50 x 4

17.6 8.8 117 7 625 552 188 4 475

16 Ω / Bridge d 2500 x 2

4 Ω / Ch. 210 0 x 4

27 13.5 1914 10 50 864 2949 74 3

8 Ω / Bridge d 4200 x 2

2 Ω / Ch.

*4)

2200 x 4

33.6 16 .8 2221 115 0 1071 3655 9 21

4 Ω / Bridged

*4)

4400 x 2

100 V / Ch. 2000 x 4

26.2 13.1 183 8 1000 838 2860 721

200 V / Br idged N/R

Pink no ise (max pow er) *3)

8 Ω / Ch. 12 50 x 4

30.0 16 .0 20 06 /214 0 1145 /12 21 860/918 29 35/313 3 739/78 9

16 Ω / Bridge d 2500 x 2

4 Ω / Ch. 210 0 x 4

30.0 16 .0 212 7/2 26 8 123 0/ 1312 896/956 3058/ 3263 770/822

8 Ω / Bridge d 4200 x 2

2 Ω / Ch. 2300 x 4

30.0 16 .0 1 98 3/ 2115 1016/10 84 9 66/1031 3297/3519 831/886

4 Ω / Bridge d 4600 x 2

100 V / Ch. 2000 x 4

30.0 16 .0 5992/2236 3467/1294 883/942 3 014/ 3216 75 9/ 810

200 V / Br idged 4000 x 2

Mains co nnector, 23 0 V CE version 16 A, CEE 7

Mains co nnector, 115 V ETL vers ion 30A Twist L ock

*1) The ampli ﬁer’s PSU o perates as a no n-res istive loa d, so the cal culation “ Volts x Amps = W atts” would not be correc t. Instead, measured an d speci ﬁed here is wh at is known as the “Active Power” in t he ampliﬁer providin g useful, real -worl d values of powe r consumption and heat dissipatio n.

*2) Curre nt draw ﬁgure s measured at 2 30 V. 115 V ﬁgures are 23 0 V ﬁgures mult iplied by t wo.

*3) Figu res measure d at maximum sustainab le power without tripp ing the mains f use. Listed s eparatel y for 30 A /115 V and 16 A/2 30 V operat ion. Note that the ma x. power co ndition is ve ry extreme and will not o ccur durin g normal op eration. A lso note that t he mains brea ker will not be tr ipped even if operat ion is momentarily in excess of ma x. rating s.

*4) Italics used for conditions that, if sustained over lo ng time periods, may trigger the mains breaker. Therefore these measurements should not be use d when calculating cooli ng requirements as they cannot be sustaine d by the mains breaker ove r time.

6.4. Current Draw and Thermal Dissipation Speciﬁcations

The following tables contain information on measured current consumption as well as calculated heat dissipation during normal operation (1/8 rated power); and during extreme heavy duty operation (1/4 rated power).

C SERIES Operation Manual rev 3.0.0

6. Appendix

TEMP

MUTE

BRIDGE BRIDGE BRIDGE BRIDGE

MUTE

F A U L T F A U L T

TEMP

POWER

PAL

OPTION

CH| A CH| B CH| C CH| D

VHF VHF CPL CPL

VPL | CLIP VPL | CLIP

-4dB -4dB

-10dB -10dB

SIG | HI-IMP SIG | HI-IMP

C68:4

POWER

REMOTE

C SERIES

LABEL AREA

Current Draw and Thermal Dissipation

C Series: Dedicated Installation Ampliﬁers

C 68:4

Level Lo ad Rated power Line C urren t *2) Watt *1) Thermal Dissipation

115 V AC 2 30 VAC In Out Dissipated BTU /hr kCal/hr

Standb y with remote p ower off via N omadLink 0 0 0 0 0

Powered on, idling. 133 0 133 454 114

Amp (I) Watt

Pink noise (1/8 rate d powe r)

8 Ω / Ch. 12 00 x 4

16.0 8.0 1123 600 523 178 4 450

16 Ω / Bridged 240 0 x 2

4 Ω / Ch. 17 00 x 4

22.4 11. 2 157 8 850 728 2484 626

8 Ω / Bridged 3400 x 2

2 Ω / Ch. 12 00 x 4

21.2 10.6 1378 600 778 2655 669

4 Ω / Bridged 240 0 x 2

100 V / Ch. 160 0 x 4

21.0 10 .5 1463 800 663 2262 570

200 V / Br idged 3200 x 2

Pink noise (1/4 rate d power) *3)

8 Ω / Ch. 12 00 x 4

32.6 16 .3 2429 160 0 829 2829 713

16 Ω / Bridged 240 0 x 2

4 Ω / Ch. 17 00 x 4

38.8 19.4 2697 170 0 997 3402 857

8 Ω / Bridged 3400 x 2

4 Ω / Ch. 12 00 x 4

35.2 1 7.6 2296 12 00 10 96 3740 942

8 Ω / Bridged 240 0 x 2

100 V / Ch. 160 0 x 4

35.4 17.7 260 5 1600 100 5 3429 864

200 V / Br idged 3200 x 2

Mains co nnector, 23 0 V CE versio n 16 A, CEE 7

Mains co nnector, 115 V ETL version 20 A / 5-20P

*1) The amp liﬁer’s P SU operates as a non- resistive load, so th e calculation “Volts x Amps = Watts” would not be c orrect. Instead, measured and speci ﬁed here is wh at is known as the “Active Power” i n the ampliﬁer providing useful, re al-wo rld values of power consu mption and heat dissip ation.

*2) Current draw ﬁg ures measured at 230 V. 115 V ﬁgures are 2 30 V ﬁgures multiplie d by two.

*3) F igures measured at maximum power before ampliﬁ er protecti on and limite r features are en gaged. Typically thi s is between 1/4 and 1/ 3 of rated power. Note th at the max. p ower condi tion is ver y extreme an d will not occ ur during no rmal operation. Also note that th e mains breake r will not be trippe d even if oper ation is in exce ss of max. ra tings.

C SERIES Operation Manual rev 3.0.0

TEMP

MUTE

BRIDGE BRIDGE BRIDGE BRIDGE

MUTE

F A U L T F A U L T

TEMP

POWER

PAL

OPTION

CH| A CH| B CH| C CH| D

VHF VHF CPL CPL

VPL | CLIP VPL | CLIP

-4dB -4dB

-10dB -10dB

SIG | HI-IMP SIG | HI-IMP

C48:4

POWER

REMOTE

C SERIES

LABEL AREA

Current Draw and Thermal Dissipation

C Series: Dedicated Installation Ampliﬁers

C 48:4

Level Lo ad Rated power Line C urren t *2) Watt *1) Thermal Dissipation

115 V AC 2 30 VAC In Out Dissipated BTU /hr kCal/hr

Standb y with remote p ower off via N omadLink 0 0 0 0 0

Powered on, idling. 123 0 123 420 10 6

Amp (I) Watt

Pink noise (1/8 rate d powe r)

8 Ω / Ch. 1000 x 4

13,8 6,9 945 500 445 1518 383

16 Ω / Bridged 2000 x 2

4 Ω / Ch. 12 00 x 4

17, 4 8,7 11 71 600 5 71 19 48 491

8 Ω / Bridged 240 0 x 2

2 Ω / Ch. 600 x 4

12,4 6,2 76 9 300 469 160 0 403

4 Ω / Bridged 1200 x 2

100 V / Ch. 900 x 4

13,2 6,6 840 450 390 1331 335

200 V / Br idged 1800 x 2

Pink noise (1/4 rate d power) *3)

8 Ω / Ch. 1000 x 4

28,2 14 ,1 2 116 1333 78 3 2670 673

16 Ω / Bridged 2000 x 2

4 Ω / Ch. 120 0 x 4

30,6 15 ,3 216 8 12 00 968 3303 832

8 Ω / Bridged 240 0 x 2

4 Ω / Ch. 600 x 4

21,6 10 ,8 136 8 600 76 8 2620 660

8 Ω / Bridged 1200 x 2

100 V / Ch. 900 x 4

26,4 13, 2 182 7 1200 627 2 139 539

200 V / Br idged 1800 x 2

Mains co nnector, 23 0 V CE versio n 16 A, CEE 7

Mains co nnector, 115 V ETL version 20 A / 5-20P

*1) The amp liﬁer’s P SU operates as a non- resistive load, so th e calculation “Volts x Amps = Watts” would not be c orrect. Instead, measured and speci ﬁed here is wh at is known as the “Active Power” i n the ampliﬁer providing useful, re al-wo rld values of power consu mption and h eat dissip ation.

*2) Current draw ﬁg ures measured at 230 V. 115 V ﬁgures are 2 30 V ﬁgures multiplie d by two.

6. Appendix

C SERIES Operation Manual rev 3.0.0

6. Appendix

TEMP

MUTE

BRIDGE BRIDGE BRIDGE BRIDGE

MUTE

F A U L T F A U L T

TEMP

POWER

PAL

OPTION

CH| A CH| B CH| C CH| D

VHF VHF CPL CPL

VPL | CLIP VPL | CLIP

-4dB -4dB

-10dB -10dB

SIG | HI-IMP SIG | HI-IMP

C28:4

POWER

REMOTE

C SERIES

LABEL AREA

Current Draw and Thermal Dissipation

C Series: Dedicated Installation Ampliﬁers

C 28:4

Level Lo ad Rated power Line C urren t *2) Watt *1) Thermal Dissipation

115 V AC 2 30 VAC In Out Dissipated BTU /hr kCal/hr

Standb y with remote p ower off via N omadLink 0 0 0 0 0

Powered on, idling. 123 0 123 420 10 6

Amp (I) Watt

Pink noise (1/8 rate d powe r)

8 Ω / Ch. 700 x 4

11. 6 5.8 727 350 377 128 6 324

16 Ω / Bridged 14 00 x 2

4 Ω / Ch. 700 x 4

13.0 6.5 775 350 425 145 0 365

8 Ω / Bridged 14 00 x 2

2 Ω / Ch. 300 x 4

9.4 4.7 529 15 0 379 129 3 326

4 Ω / Bridged 600 x 2

100 V / Ch. 700 x 4

10.4 5.2 663 350 313 106 8 269

200 V / Br idged 1400 x 2

Pink noise (1/4 rate d power) *3)

8 Ω / Ch. 700 x 4

24.0 12.0 1589 933 656 2237 564

16 Ω / Bridged 14 00 x 2

4 Ω / Ch. 700 x 4

20.8 10. 4 135 9 70 0 659 2249 567

8 Ω / Bridged 14 00 x 2

4 Ω / Ch. 300 x 4

14.0 7. 0 843 300 543 18 53 467

8 Ω / Bridged 600 x 2

100 V / Ch. 700 x 4

21.4 10.7 14 58 933 525 17 90 451

200 V / Br idged 1400 x 2

Mains co nnector, 23 0 V CE versio n 16 A, CEE 7

Mains co nnector, 115 V ETL version 20 A / 5-20P

*1) The amp liﬁer’s P SU operates as a non- resistive load, so th e calculation “Volts x Amps = Watts” would not be c orrect. Instead, measured and speci ﬁed here is wh at is known as the “Active Power” i n the ampliﬁer providing useful, re al-wo rld values of power consu mption and h eat dissip ation.

*2) Current draw ﬁg ures measured at 230 V. 115 V ﬁgures are 2 30 V ﬁgures multiplie d by two.

C SERIES Operation Manual rev 3.0.0

Current Draw and Thermal Dissipation

C Series: Dedicated Installation Ampliﬁers

TEMP

MUTE

BRIDGE BRIDGE BRIDGE BRIDGE

MUTE

F A U L T F A U L T

TEMP

POWER

PAL

OPTION

CH| A CH| B CH| C CH| D

VHF VHF CPL CPL

VPL | CLIP VPL | CLIP

-4dB -4dB

-10dB -10dB

SIG | HI-IMP SIG | HI-IMP

C16:4

POWER

REMOTE

C SERIES

LABEL AREA

C 16 : 4

Level Lo ad Rated power Line C urren t *2) Watt *1) Thermal Dissipation

115 V AC 2 30 VAC In Out Dissipated BTU /hr kCal/hr

Standb y with remote p ower off via N omadLink 0 0 0 0 0

Powered on, idling. 129 0 129 440 111

Amp (I) Watt

Pink noise (1/8 rate d powe r)

8 Ω / Ch. 400 x 4

8.6 4.3 526 200 326 1112 280

16 Ω / Bridged 800 x 2

4 Ω / Ch. 300 x 4

8.2 4 .1 485 150 335 114 3 288

8 Ω / Bridged 600 x 2

2 Ω / Ch. n.r.

4 Ω / Bridged n. r.

100V / Ch . 400 x 4

7.6 3.8 463 200 263 897 226

200V / Bridged 800 x 2

Pink noise (1/4 rate d power) *3)

8 Ω / Ch. 400 x 4

16.2 8 .1 104 6 533 513 174 9 4 41

16 Ω / Bridged 800 x 2

4 Ω / Ch. 300 x 4

15.2 7.6 953 400 553 1887 475

8 Ω / Bridged 600 x 2

2 Ω / Ch. n.r.

4 Ω / Bridged n. r.

100 V / Ch. 400 x 4

14.4 7. 2 944 533 411 1401 353

200 V / Br idged 800 x 2

Mains co nnector, 23 0 V CE versio n 16 A, CEE 7

Mains co nnector, 115 V ETL version 15 A / 5-15P

*1) The amp liﬁer’s P SU operates as a non- resistive load, so th e calculation “Volts x Amps = Watts” would not be c orrect. Instead, measured and speci ﬁed here is wh at is known as the “Active Power” i n the ampliﬁer providing useful, re al-wo rld values of power consu mption and heat dissip ation.

*2) Current draw ﬁg ures measured at 230 V. 115 V ﬁgures are 2 30 V ﬁgures multiplie d by two.

6. Appendix

C SERIES Operation Manual rev 3.0.0

7. Technical Speciﬁcations

Model

Number of channels

Peak total output all channels driven

Peak output voltage per channel

Max. output current per channel

Max Output Power

16 ohms per ch. (all ch.’s driven)

8 ohms per ch. (all ch.’s driven)

4 ohms per ch. (all ch.’s driven)

2 ohms per ch. (all ch.’s driven)

Hi-Z per ch. (all ch.’s driven): 70 Vrms / 100 V peak

Hi-Z per ch. (all ch.’s driven): 100 Vrms / 141 V peak

16 ohms Bridged per ch.

8 ohms Bridged per ch.

4 ohms Bridged per ch.

2 ohms Bridged per ch.

Hi-Z Bridge d per ch.1): 140 Vrms / 20 0 V peak

Perfo rmance with G ain:

THD 20 Hz - 20 kHz for 1 W

THD at 1 kHz and 1 dB below clipping

Signal To Noise Ratio

Channel separation (Crosstalk) at 1 kHz

Frequency response (1 W into 8 ohms) +0/-3 dB

Input impedance

Common Mode Rejection (CMR)

Output impedance @ 100 Hz

Voltage Pe ak Limiter (V PL), max. peak ou tput

VPL, selectable per ch.

VPL, when bridged

Voltage Peak Limiter mode (per ch.)

Gain an d Level

Amplifier gain selectable (all channels) – rear-panel switches

Default gain

Level adjustment (per ch.)

Connectors and switches

Input connectors (per ch.)

Output connectors (per ch.)

Output bridge mode

High pass filter

NomadLink network

Intelligent fans (on/off)

Power on/off and Remote enable on/off

Cooling

General Purpose Outputs (GPO)

General Purpose Inputs (GPI)

Front-panel indicators

Common

Per channel

Power

Operating voltage, 230 V / 115 V nominal

Minimum power-up voltage, 230 V / 115 V

Power Average Limiter (PAL)

Power Factor Correction (PFC)

Soft-start / Inrush Current Draw

Mains conn ector

Dimensions

Weight

Finish

Approvals

Note 1): Automatic -6 dB gain compensation when bridging channels. Ch.’s A+B and/or C+D, E+F, G+H, can be bridged individually. Note 2): PAL can reduce the maximum output power to keep the power supply operating safely, and/or to prevent excessive current draw tripping the mains breaker. Refer to Operation Manual. Note 3): For sine waves, peak voltage output values translate to Vrms with the formula V/1.41 = Vrms. E.g. 100 V peak equals app. 70 V peak. Hence, outputs can be set for high-impedance loads without

requiring a transformer. Note 4): Regarding n.r. (not recommended) notes: The amplifier will be fully operational in bridge-mode into 2 ohm and high impedance (Hi-Z) loads, but due to physical constraints in the construction, the max. output power will not be significanty higher than running individual channels and therefore this mode of operation is not recommended.

Note 5): C 88:4 mains connector: 30 A Twist lock. Note 6): Separate 230 V or 115 V versions available. Not selectable on the amplifier.

All specifications are subject to change without notice.

1) 3)

C 88:4 C 68:4 C 48 :4 C 28:4 C 16:4 C 20:8X C 10:8X C 10:4X C 5:4X

4 4 4 4 4 8 8 4 4

880 0 W 680 0 W 480 0 W 2800 W 1600 W 2000 W 1000 W 1000 W 50 0 W

141 V 141 V 141 V 141 V 141 V 10 0 V 100 V 100 V 100 V

35.5 Arms 24. 5 Arms 1 7.5 Ar ms 12 Arms 8.5 Arms 8 A rms 5.6 Arms 8 Arms 5. 6 Arms

650 W 650 W 625 W 600 W 400 W 250 W 12 5 W 2 50 W 125 W

1250 W 1200 W 1000 W 700 W 400 W 250 W 125 W 250 W 125 W

2100 W 170 0 W 1200 W 70 0 W 300 W 250 W 12 5 W 2 50 W 125 W

2200 W 120 0 W 600 W 30 0 W 140 W 125 W 60 W 125 W 6 0 W

2200 W 160 0 W 110 0 W 700 W 400 W 250 W 125 W 250 W 125 W

1700 W 1200 W 900 W 70 0 W 40 0 W n.a. n.a. n.a. n.a.

2500 W 2400 W 2000 W 1400 W 80 0 W 500 W 250 W 500 W 250 W

4200 W 340 0 W 2400 W 120 0 W 600 W 50 0 W 250 W 50 0 W 250 W

440 0 W 2400 W 120 0 W 600 W n.r

n.r

440 0 W 3200 W 18 00 W 14 00 W 80 0 W 500 W 250 W 50 0 W 250 W

35 dB and V PL: 100 V / C 88:4: 35 d B and VPL: 141 V 32 dB and VPL : 100 V

<0.1% <0.1%

<0.05% <0.05%

>112 dBA >112 dBA

>70 dB >70 dB

6.8 Hz - 34 kHz 6.8 Hz - 34 kHz

20 kOhm 20 kOhm

>50 dB, 20 Hz - 20 kHz >50 dB, 20 Hz - 20 kHz

30 mOhm 48 mOhm

141, 118, 100, 85, 71, 59, 50, 42 V 100, 63, 45, 32 V

282, 236, 200, 170, 142, 118, 100, 84 V 200, 126, 90, 64 V

Hard / Soft Hard / Soft

23, 26, 29, 32, 35, 38, 41, 44 dB 29, 32, 35, 38 dB

35 dB 32 dB

Front-panel potentiometer, 21 position detented from -inf to 0 dB, hidden behind security panel/dust filter grille

3-pin Phoenix, electronically balanced 3-pin Phoenix, electronically balanced

Barrier strip 2-pole screw terminals Barrier strip 2-pole screw terminals

A+B and/or C+D, inputs A and C are input source A+B, C+D, E+F, G+H, inputs A, C, E, G are signal source

N/A Fixed at 35 Hz , switchable per cha nnel

On board, 2 x R J45 connector s IN and OUT On b oard, 2 x RJ45 conn ectors, IN and OUT

Yes, depending on presence of output signal Yes, depending on presence of output signal

Individual switches on front panel Individual switches on front panel

Two fans, front-to-rear airflow, temperature controlled speed Two fans, front-to-rear airflow, temperature controlled speed

N/A Contact Closure types, 2-pole Phoenix

NomadLink Network; Power Average Limiter (PAL)

Signal present / High-impedance; -10 dB and -4 dB output signal;Voltage Peak Limiter (VPL); Current Peak Limiter (CPL): Very High Frequency (VHF); High temperature; Fault; Mute

130-265 V / 65 -135 V

171 V / 85 V 80 V

Yes Yes

No Yes

Yes / max. 5 A Yes / max. 5 A

230 V CE: 16 A, CEE7; 115 V ETL: 20 A / NEMA 5-20P; C16:4: 15A/NEMA 5-15P IEC Inlet

W: 483 mm (19”), H: 88 mm (2 U), D: 343 mm (13.5”) W: 483 mm (19”), H: 88 mm (2 U), D: 343 mm (13.5”)

12 kg (26.4 lbs.) 8.5 kg (18.75 lbs.)

Black painted steel chassis with gray painted steel front Black painted steel chassis with gray painted steel front

CE, ANSI/UL 60065 (ETL), CSA C22.2 NO. 60065, FCC CE, ANSI/UL 60065 (ETL), CSA C22.2 NO. 60065, FCC

n.r

; Power on NomadLink Network; Power Average Limiter (PAL)2); Power on

250 W 125 W 250 W 125 W

n.r

Front-panel potentiometer, 21 position detented from -inf to 0 dB, hidden behind security panel/dust filter grille

Signal present / High-impedance; Voltage Peak Limiter (VPL); Current Peak Limiter (CPL): Very High Frequency (VHF); High temperature; Fault; Mute

Universal power supply 65-265 V

n.r

C SERIES Operation Manual rev 3.0.0

8. Warranty and Support

8.1. General

This product is manufactured by LAB GRUPPEN, and it is warranted to be free from any defects caused by components or factory workmanship, under normal use and service, for a period of six (6) years from date of purchase from an authorized LAB GRUPPEN dealer. If the product fails to perform as specied during the warranty period, LAB GRUPPEN will undertake to repair, or at its option, replace this product at no charge to its owner, provided the unit is returned undamaged, shipping prepaid, to an authorized service facility or to the factory. This warranty shall be null and void if the product is subjected to: repair work or alteration by a person other than those authorized by us; mechanical damage including shipping accidents; war, civil insurrection, misuse, abuse, operation with incorrect AC voltage; incorrect connections or accessories; operation with faulty associated equipment; or exposure to inclement weather conditions. Damage due to normal wear and tear is not covered by the warranty. Units on which the serial number has been removed or defaced will not be eligible for warranty service. LAB GRUPPEN shall not be responsible for any incidental or consequential damages. LAB GRUPPEN’s responsibility is limited to the product itself. LAB GRUPPEN takes no responsibility for any loss due to cancellation of any events, or rent of replacement equipment or costs due to a third party’s or customer’s loss of prot, or any other indirect cost or losses however incurred. LAB GRUPPEN reserves the right to make changes or improvements in design or manufacturing without assuming any obligation to change or improve products previously manufactured. This warranty is exclusive, and no other warranty is expressed or implied. This warranty does not affect the customer’s statutory rights.

International Warranties

Please contact your supplier or distributor for this information, as rights and disclaimers may vary from country to country.

8.2. Technical assistance and service

8.2.1. International service

If your LAB GRUPPEN product requires repair, contact your LAB GRUPPEN dealer or distributor, visit http://labgruppen.com/support or contact LAB GRUPPEN by phone or email to obtain details for the nearest authorized service center.

C SERIES Operation Manual rev 2.0.0

8. Warranty and Support

8.2.2. Factory service

In the event a LAB GRUPPEN product requires factory service, you may contact LAB GRUPPEN’s service department for return instructions and a Return Authorization number.

Please note for product return:

1. Use the original packing.

2. Include a copy of the sales receipt, your name, return address, phone and fax number, email address and description of the defect.

3. Mark the Return Authorization number on the outside of the packing.

Ship the product prepaid to:

Music Group Innovation Sweden AB Faktorvägen 1 SE-434 37 Kungsbacka Sweden Phone: +46 300 56 28 00 Fax: +46 300 56 28 99

service@labgruppen.com www.labgruppen.com

C SERIES Operation Manual rev 3.0.0