Related Manuals for Lab.gruppen C 88:4
Summary of Contents for Lab.gruppen C 88:4
- Page 1 Operation Manual Operation Manual C Series Dedicated Installation Amplifiers ▸ C 88:4 ▸ C 68:4 ▸ C 48:4 ▸ C 28:4 ▸ C 16:4 Rev. 2.2.3 Item no. OM-CS...
- Page 2 C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3...
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Page 3: Important Safety Instructions
The exclamation point triangle is used to alert the user to presence of important operating and service instructions in the literature accompanying the product. C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
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 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 5: User Responsibility
There is also a risk that the unit will malfunction since it is dependent on constant airflow from front to rear. If the dust filters are not clean and the unit malfunctions, any resultant problems will not be covered by the warranty. C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 6: Table Of Contents
5. Operation and Performance ........................12 5.1 Introduction ............................12 5.2 Operation precautions ..........................12 5.3 Signal flow and headroom ........................12 5.3.1 Signal flow blocks ..........................12 C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... - Page 7 6.2 FAQ ................................ 27 6.3 Additional documentation ........................28 6.4 Current Draw and Thermal Dissipation specification ................28 7. Technical Specifications ..........................33 8. Warranty ..............................34 C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3...
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Page 8: Welcome
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 amplifiers. Please read through it in its entirely to become fully acquainted with the many configuration options and multiple layers of protection circuitry. -
Page 9: Main Features
▸ VHF, (Very High Frequency) protection circuits mute the output of the amplifier when non-dynamic continu- ous signals above 10 kHz are detected. C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 10: Nomadlink / Ethernet Control And Monitoring Network
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 C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 11: Installation
Amplifiers 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. C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 12: Cooling
To calculate the maximum heat emission value when installing the amplifiers in rooms with an air-conditio-ning system, please refer to the Current Draw and Thermal Emissions specifications provided in the Appendix (section 8.4). C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 13: Operating Voltage
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 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 14: Quick Guide Overview
NomadLink network control. 4.1.2 Front-panel LEDs The front-panel LED area includes the following indicators per channel: C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... - Page 15 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 C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3...
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Page 16: Rear Panel Overview
VPL - Voltage Peak Limiter adjustment is provided for eight individual levels. Select the setting most appropriate for connected speakers. See Appendix for details. C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 17: Nomadlink / Ethernet Network Setup16
External contact closures and 24 V low/high triggers can be connected to GPI connectors on the NLB 60E for control of fire-alarm systems or external power sequencers. For more details read the instructions supplied with the NLB 60E. C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... - Page 18 HUB, use " straight " cable. PC can also be connected on front panel. " Straight " RJ45 cables between bridge and amplifiers IN OUT NOMADLINK C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3...
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Page 19: Operation And Performance
These sensing circuits are also employed to feed back voltage and current level information, via a side chain, to the limiters. C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... - Page 20 Sensing circuits also transmit local amplifier module temperature and power supply temperature to the ap- propriate protection mechanisms. Read the Protection, Faults and Warnings section for further details. C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3...
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Page 21: Headroom, Sensitivity And Vpl / Gain Settings
C 68:4 VPL and GAIN settings C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 22: Audio Input And Output Connections, Setup And Features
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. C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 23: Amplifier Gain
Sensitivity is defined 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. C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 24: Output Voltage Peak Limiter (Vpl)
Vrms, you can in most cases simply connect the speakers to the amplifier output terminals, select the correct VPL setting, and place the amplifier in service. C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 25: Output Current Peak Limiter (Cpl)
If the CPL and -4 dB indicators are lit simultaneously, then the amplifier is delivering excessive current and is being forced into a current limiting state (output muted). C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 26: Protection, Faults And Warnings
20 Hz 10 kHz 20 kHz 30 kHz Slow Attack time VHF protection Fast 20 Hz 10 kHz 20 kHz 30 kHz C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 27: Dc 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. C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 28: Temperature Protection
(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 amplifier. C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 29: Front-Panel Monitoring And Adjustments
It is not possible to adjust the individual channel attenuation from the NomadLink network or elsewhere on the amplifier. Use fingers or a screwdriver to adjust the potentiometers. C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 30: Mute Indication
NomadLink LED on the amplifier front panel and the NomadLink LED on the rear panel to light up. NomadLink is active even when the amplifier has mains power disconnected or is not yet powered up. C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 31: Connection And Setup
RJ45 is utilized, network performance may be compromised. In this event Lab.gruppen cannot guarantee that the NomadLink network will be fully operational. C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 32: Nomadlink Network Cable Lengths
Figure 7.7.5b: NomadLink closed loop configuration Figure 7.7.5c: NomadLink closed loop daisy chain configuration Figure 7.7.5d. NomadLink dual daisy chain closed loop configuration C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 33: Devicecontrol Software
Software & Firmware section of our website at: http://labgruppen.com/index.php/support/software_firmware/ C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 34: Appendix
If cables are broken or disconnected in either direction, all amplifiers still may be addressed by the network. C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 35: Additional Documentation
Table 8.4a: C 88:4 Current Draw and Thermal Dissipation specifications C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... - Page 36 Also note that the mains breaker will not be tripped even if operation is momentarily in excess of max. ratings. Table 8.4b: C 68:4 Current Draw and Thermal Dissipation specifications C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3...
- Page 37 Table 8.4c: C 48:4 Current Draw and Thermal Dissipation specifications C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3...
- Page 38 Note that the max. power condition is very extreme and will not occur during normal operation. Also note that the mains breaker will not be tripped even if operation is momentarily in excess of max. ratings. Table 8.4d: C 28:4 Current Draw and Thermal Dissipation specifications C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3...
- Page 39 Table 8.4e: C 16:4 Current Draw and Thermal Dissipation specifications C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3...
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Page 40: Technical Specifications
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 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3... -
Page 41: 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 42 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 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3...
- Page 43 C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3...
- Page 44 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 ►...