Lab.gruppen C 20:8X Operation Manual
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Lab.gruppen C 20:8X Operation Manual

Dedicated installation amplifiers
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Operation Manual
Operation Manual
Dedicated Installation Amplifiers
C Series
▸
C 20:8X
▸
C 10:8X
▸
C 10:4X
▸
C 5:4X
Rev. 1.1.4
Item no. OM-CSX

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Summary of Contents for Lab.gruppen C 20:8X

  • Page 1 Operation Manual Operation Manual C Series Dedicated Installation Amplifiers ▸ C 20:8X ▸ C 10:8X ▸ C 10:4X ▸ C 5:4X Rev. 1.1.4 Item no. OM-CSX...

  • Page 3: Important Safety Instructions

    21. The US National Differences clause 16.3 requires that network cables must be flame rated VW-1. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 4: Warning

    All electrical products sold in the EC must be approved for immunity against electromagnetic fields, high voltage flashes, and radio interference. Consult the dealer or an experienced radio/TV technician for help. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 5: User Responsibility

    If the dust filters are not clean and the unit malfunctions, any resultant problems will not be covered by the warranty. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 6: Table Of Contents

    NomadLink / Ethernet network setup ....................11 Operation and Performance ......................... 14 Introduction ............................14 Operation precautions ........................14 Signal flow and headroom........................14 5.3.1 Signal flow blocks ........................14 C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...
  • Page 7 Additional documentation ........................31 Current Draw and Thermal Dissipation specification ................32 Signal flow and VPL to output measurements ..................36 Technical Specifications ........................37 Warranty ..............................38 C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 8: Welcome

    Lab.gruppen C Series power amplifiers are designed and built specifically for the unique demands of perma- nent installation applications. C Series amplifiers offer the optimum combination of high-quality audio reproduc- tion, flexible features, ease of installation, and ultimate reliability in normal use.

  • Page 9: Main Features

    Your new C Series amplifier 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.

  • Page 10: Gpio Facilities And 35 Hz Hpf

    The 35 Hz high-pass filter rolls off low frequencies (6 dB/octave) for greater efficiency and reliability in, for example, 70/100 V high impedance systems where the removal of very low frequency content may be desired. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 11: Nomadlink / Ethernet Control And Monitoring Network

    NomadLink allows you to remotely power on and power off individual amplifiers or user-definable groups of amplifiers, as well as engage Mute and Solo functions on individual channels. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 12: Installation

    3. Installation Unpacking Carefully open the shipping carton and check for any noticeable damage. Every Lab.gruppen amplifier 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.

  • Page 13: Cooling

    If you are not 100% confident of your competence to replace the mains plug, engage qualified personnel to do the job. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 14: Grounding

    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 C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 15: Quick Guide Overview

    “Power On” command is received from the network. When the remote switch is off, it is not possible to switch amplifier power on or off using NomadLink network control. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 16: Front-Panel Led's

    NomadLink receives phantom specified nominal load, the amplifier channel is able powerfrom the NLB 60E over the network cable. to deliver maximum rated output power. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 17: Rear Panel Overview

    Bridged Mode - Switches the channel pairs into bridged mode operation (automatic -6 dB gain compensation). When in bridged mode, 2 ohm operation is not recommended. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 18: Nomadlink / Ethernet Network Setup

    NLB 60E unit. The NomadLink connections between amplifiers use standard “straight” Cat-5/RJ45 equipped cables. US National Differences cl.16.3 requires that NomadLink network cables must be rated VW-1. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...
  • Page 19 External contact closures can be connected to the GPI connectors on the NLB 60E for control of fire-alarm systems or external power sequencers. For more details, please read the Operation Manual supplied with the NLB 60E. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...
  • Page 20 BR.=BRIDGE BRIDGE BRIDGE C+D BRIDGE A+B CLASS 3 WIRING IN OUT NOMADLINK Figure 5.3: Connection details between a PC, the NLB 60E and networked amplifiers C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 21: Operation And Performance

    VPL (and output amplifier voltage clip if “Soft Clip” activated). This ensures that power output is maintained within the design limits of the amplifier. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 22: Headroom, Sensitivity And Vpl / Gain Settings

    Figure 6.4.1: Phoenix-type input connector field Electronically balanced, Phoenix-type inputs are provided on all channels. Follow the +,– and Ground labels when connecting the input signal. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 23: Output Operation And Connection

    A (A+B) or C (C+D) respectively. Output speaker cables must be connected to the plus pole on channel A. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 24: Amplifier Input Gain

    C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 25: Amplifier Sensitivity

    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. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 26: Constant Voltage 70 V And 100 V Systems Setup And Operation

    If the CPL indicator is lit continuously, then the amplifier is delivering excessive current and is being forced into a current limiting state (output muted). C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 27: Gpio Connection And Operation

    POWER CONTROL 2 will follow the state of the port. If the connection is closed, the amplifier turns on; if the connection is open the amplifier will turn off. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 28: Nomadlink Disable Switch

    The VHF protection is NOT a limiter and does not alter the amplifier’s frequency response. It is implemented solely to detect continuous VHF content. The amplifier will always pass VHF peaks at full power, with no effect on musical “transients”. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 29: Dc Protection

    When this occurs, the amplifier protects the output stage from damage by muting the output signal and bypassing the circuits. Indication of this fault is a constant orange C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 30: Temperature Protection

    The C Series amplifiers have very low inrush power as the capacitors are charged slowly and in a controlled manner ensuring that breakers will not trip. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 31: Level Indicators

    However, it could indicate acceptable high impedance, such as a sub-bass enclosure with high impedance at a certain frequency. For more detailed signal level indications use the DeviceControl software application. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 32: Level Adjust

    NomadLink network cable. Bridge mode (yellow) indicates if two channels are bridged using the DIP-switch on the rear panel. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 33: Nomadlink Network And Devicecontrol Software

    C...X Series as well as standard C Series or FP+ amplifiers, each C...X unit should be counted as two devices on the network, with the total device count not to exceed 60 devices per subnet. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 34: Connection And Setup

    See the drawing below for an example of how to create a converter. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 35: Nomadlink Network Cable Lengths

    Contact your an IT expert or an authoritative source for more details. Below are typical examples of NomadLink network setups: Figure 6.7.4 shows typical examples of NomadLink network setups: C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 36: Devicecontrol Software

    NLB 60E. DeviceControl provides comprehensive monitoring of amplifier status as well as control of amplifier power ON/OFF and individual channel mute and solo functions. Please review the DeviceControl Operation Manual for more detailed information. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 37: Third Party Control And Monitoring Capabilities

    C Series amplifiers, you need to look this information up in a table found in the Ap- pendix section of this manual. Input sensitivity also is automatically calculated in the DeviceControl software application. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 38: Additional Documentation

    In case you didn’t find what you were looking for in this Operation Manual, check out the website at www. labgruppen.com, where you can find a multitude of additional documentation for C Series. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 39: Current Draw And Thermal Dissipation Specification

    *2) Current draw gures measured at 230 V. 115 V gures are 230 V gures multiplied by two. Table 7.4a: C 20:8X Current Draw and Thermal Dissipation specifications C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...
  • Page 40 *2) Current draw gures measured at 230 V. 115 V gures are 230 V gures multiplied by two. Table 7.4b: C 10:8X Current Draw and Thermal Dissipation specifications C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...
  • Page 41 *2) Current draw gures measured at 230 V. 115 V gures are 230 V gures multiplied by two. Table 7.4c: C 10:4X Current Draw and Thermal Dissipation specifications C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...
  • Page 42 *2) Current draw gures measured at 230 V. 115 V gures are 230 V gures multiplied by two. Table 7.4d: C 5:4X Current Draw and Thermal Dissipation specifications C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 43: Signal Flow And Vpl To Output Measurements

    Sensitivity: Gain Vrms -8.7 +38 dBu -5.7 +35 dBu -2.7 +32 dBu +29 dBu Figure 7.5: C...X Series signal flow and VPL to output settings C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 44: Technical Specifications

    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. C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...

  • Page 45: Warranty

    Lab.gruppen shall not be responsible for any incidental or consequential damages. Lab.gruppen’s responsibil- ity 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 profit, or any other indirect cost or losses however incurred.
  • Page 46 4. Ship the product prepaid to: Lab.gruppen 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 C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4...
  • Page 48 Operation Manual L A b . G r u P P e n A b ► S W e d e n I n T e r n A T I O n A L C O n T A C T ► I n f O @ L A b G r u P P e n . C O m u S C O n T A C T ►...

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