Rev. 2.0.0 Item no.
1. Important safety instructions 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. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 2 Read these instructions. Keep these instructions Heed all warnings. Follow all instructions. Do not use this apparatus near water. Clean only with a dry cloth. Do not block any ventilation openings.
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 fire or electric shock, do not expose this apparatus to rain or moisture.
Table of Contents Table of Contents 1. Important safety instructions 1.1. Approvals 1.2. Warnings 2 2 2 2. Introduction 2.1. Welcome 2.2. Main Features 5 5 6 3. Installation 3.1. Unpacking 3.2. Mounting 3.3. Cooling 3.4. Operating Voltage 3.5. Grounding 9 9 9 9 10 10 4. Product Overview 4.1. Front Panel Overview 4.2. Rear panel 4.3. NomadLink / Ethernet network setup 11 11 13 14 5. Operation and performance 5.1. Introduction 5.2. Operation precautions 5.3.
2. Introduction 2. Introduction 2.1. Welcome Thank you for choosing LAB GRUPPEN C Series power amplifiers for your sound reinforcement system installation. We are confident that you will be very pleased with the performance, configuration flexibility, reliability, and long-term durability offered by the C Series products. This manual provides a comprehensive guide to the features and functionality specifically of C Series model C 20:8X, C 10:8X, C 10:4X and C 5:4X amplifiers.
2. Introduction 2.2. 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. 2.2.1.
2. Introduction Following are short descriptions of standard built-in C Series protection features: • CPL (Current Peak Limiter) ensures that the amplifier’s output does not exceed the safe current handling parameters of amplifier components. • Temperature protection ensures that the amplifier will not be damaged by exceeding thermal limits. • PAL (Power Average Limiter) limits the maximum average power consumption according to the power supply and mains-breaker capabilities.
2. Introduction 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 configuration, DeviceControl provides flexible control over very large amplifier systems.
3. Installation 3. Installation 3.1. 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. Save the carton and packing materials for the carrier’s inspection.
3. Installation To calculate the maximum heat emission value when installing the amplifiers in rooms with an air-conditioning system, please refer to the Current Draw and Thermal Emissions specifications provided in the Appendix (section 6.4). 3.4. Operating Voltage All C…X amplifiers have a universal power supply that accepts mains voltages from 100-240 V (+/- 10%) @ 50 or 60 Hz. An IEC male receptacle is provided on the rear panel of all amplifiers.
4. Product Overview 4. Product Overview 4.1. Front Panel Overview CH|A CH|B CH|C CH|D TEMP VHF CPL VPL | CLIP SIG | HI-IMP BRIDGE MUTE MUTE FAULT FAULT CH|E CH|F PAL BRIDGE CH|G CH|H TEMP VHF CPL VPL | CLIP SIG | HI-IMP POWER BRIDGE MUTE MUTE FAULT FAULT REMOTE BRIDGE ON/OFF LABEL AREA C10:8X C SERIES The amplifier’s front panel presents the performance and fault condition indicators, power and remote switches, and a removable dust-filter cover.
4. Product Overview 4.1.2. Front-panel LED’s The front-panel LED area includes the following indicators per channel: Figure 4.1.
4. Product Overview 4.2. Rear panel 1 Mains input 100-240 V (+/- 10%) VAC, @ 50 or 60 Hz NomadLink network In and Out 2 ON CH C CH B CH A VPL VPL VPL VPL MODE HP 35HZ MODE HP 35HZ CH D MODE HP 35HZ VPL MODE HP 35HZ CH E VPL MODE HP 35HZ CH F VPL MODE HP 35HZ FAULT CH G VPL MODE HP 35HZ ON POWER CONTROL BR. G+H BR. E+F OUT CH H MODE HP 35HZ OUT IN GAIN E-H 100V (70Vrms) 63V MODE HARD 45V SOFT 32V BR. C+D BR.
4. Product Overview 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. GPI 2 Level Trig - Disables GPI 1; GPI 2 turns amplifier on when closed, off when open. (See section 5.
4. Product Overview 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 configured within these constraints.
5. Operation and performance 5. Operation and performance 5.1. Introduction The following sections provide comprehensive information on amplifier connection, setup, operation, and performance. The detailed information included here is essential to realizing the full functionality of the C Series amplifiers. 5.2.
5. Operation and performance settings and thereby avoid problems. In the rare event that conditions are extraordinarily severe, the amplifier will shut down until the fault or problem setting has been rectified or adjusted. These sensing circuits are also feed back voltage and current level information, via a side chain, to the limiters. Sensing circuits also transmit local amplifier module temperature and power supply temperature to the appropriate protection mechanisms.
5. Operation and performance 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 or eight connectors as appropriate are supplied for attaching cables to the inputs.
5. Operation and performance Most power amplifier designs, when bridged, automatically introduce a +6 dB input gain boost which can lead the user to conclude that said amplifier delivers “more than double the power” when in bridge mode. This is clearly not the case, as the gain boost artificially enhances perceived power at the cost of headroom. The C Series amplifiers work on globally set constant gain, and automatically compensate the input gain by -6 dB.
5. Operation and performance 5.4.5. Amplifier sensitivity 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. Since C Series amplifiers are capable of providing multiple maximum output power levels through use of the VPL feature, many sensitivity calculations may be required for a single amplifier.
5. Operation and performance 5.4.7. Constant voltage 70 V and 100 V systems setup and operation When using C Series amplifiers 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 amplifier output terminals, select the correct VPL setting, and place the amplifier in service. 5.4.8.
5. Operation and performance 5.5. GPIO connection and operation 5.5.1. Introduction C…X amplifiers provide extensive GPIO (General Purpose Input / Output) facilities to enable interfacing with thirdparty systems for AV control and power sequencing. GPIO functions are accessed through two-pole Phoenix connectors and DIP-switches on the rear panel. 5.5.2. General Purpose Outputs (GPO) Two GPOs are provided, with connectors labeled ON (GPO 1) and FAULT (GPO 2).
5. Operation and performance NOTE: The following additional technical information describes GPI port functionality: Maximum “open” contact voltage: 5 V Maximum “closed” contact current: 1 mA Maximum resistance for “closed” contact: 1 kOhm 5.5.4. NomadLink disable switch The DIP-switch labeled “GPI (- NomadLink)” completely disables the amplifier’s connectivity to the NomadLink network. 5.6. Protection, faults and warnings 5.6.1.
5. Operation and performance Output power - 6 dB slope 20 Hz 10 kHz Slow Fast Max. Peak output power VHF protection operation area 20 kHz Max. Continous output power 30 kHz Attack time VHF protection 20 Hz 10 kHz 20 kHz 30 kHz Figure 5.6.2: VHF protection operational area The VHF protection is indicated by a yellow LED on the amplifier front panel, with output muting for six seconds when active. It is reported as a fault via the NomadLink network on the DeviceControl GUI. 5.6.3.
5. Operation and performance NOTE: If the CPL turns constant orange, the output is muted, and the -4dB signal LED is ON, then the amplifier 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. 5.6.6. Temperature protection Thermal output points are shared by each channel pair.
5. Operation and performance 5.6.8. Level indicators Each channel pair of the C...X amplifier has an indicator window with five LEDs per channel plus a bridge indicator. Figure 5.6.8: Front panel LED indicators • Orange CPL (Current Peak Limiter) flashing 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).
5. Operation and performance The potentiometer’s operational range is 0 dB to -infinity 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 amplifier. Use fingers or a screwdriver to adjust the potentiometers. 5.6.10.
5. Operation and performance 5.7. NomadLink network and DeviceControl software 5.7.1. NomadLink network in the amplifiers All C Series amplifiers 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 amplifier to the NLB 60E NomadLink Bridge and Network Controller or to daisy-chain multiple amplifiers.
5. Operation and performance Figure 5.7.2a: Rear panel NomadLink connections Figure 5.7.2b: XLR to RJ45 connections 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.
5. Operation and performance Figure 5.7.4 shows typical examples of NomadLink network setups: Table 5.7.4: Typical NomadLink network configurations 30 C SERIES Operation Manual rev 2.0.
5. Operation and performance 5.7.5. DeviceControl software DeviceControl is LAB GRUPPEN’s proprietary software application for monitoring and controlling networked C Series (as well as FP+ Series) power amplifiers. DeviceControl runs on a Windows PC, which connects via Ethernet to the 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.
6. Appendix 6. Appendix 6.1. Maintenance During normal operation your C Series amplifier will provide trouble-free service. The only user maintenance required is to periodically vacuum clean the foam dust filters behind the front grille. In some extreme cases it may be necessary for authorized service personnel to clean the inside of the amplifier in order to safely remove dust or other build-ups which may occur during prolonged normal usage.
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 confident 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.
6. Appendix 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 20:8X Level Load Rated power Line Current *2) 120 VAC Watt *1) 230 VAC In Out Thermal Dissipation Dissipated BTU/hr kCal/hr Standby w.
6. Appendix C 10:8X Level Load Rated power Line Current *2) 120 VAC 230 VAC Watt *1) Thermal Dissipation In Out Dissipated BTU/hr kCal/hr Standby w. remote Power Off via NomadLink 6 0 6 20 5 Power On, Idling 91 0 91 312 79 Amp Pink noise (1/8) Pink noise (1/4) 70 V / Ch. 125 x8 16 Ω / Ch. 125 x8 32 Ω / Bridged 250 x4 100 V / Ch. 250 x4 8 Ω / Ch. 125 x8 16 Ω / Bridged 250 x4 4 Ω / Ch. 125 x8 8 Ω / Bridged 250 x4 2 Ω / Ch.
6. Appendix C 10:4X Level Load Rated power Line Current *2) 120 VAC 230 VAC Watt *1) Thermal Dissipation In Out Dissipated BTU/hr kCal/hr Standby w. remote Power Off via NomadLink 6 0 6 20 5 Power On, Idling 51 0 51 312 79 Amp Pink noise (1/8) 70 V / Ch. 250 x4 16 Ω / Ch. 250 x4 32 Ω / Bridged 500 x2 250 x4 500 x2 500 x2 4 Ω / Ch. 250 x4 8 Ω / Bridged 500 x2 100 V / Ch. 8 Ω / Ch. 16 Ω / Bridged Pink noise (1/4) 2 Ω / Ch.
6. Appendix C 5:4X Level Load Rated power Line Current *2) 120 VAC 230 VAC Watt *1) In Out Thermal Dissipation Dissipated BTU/hr kCal/hr Standby w. remote Power Off via NomadLink 6 0 6 20 5 Power On, Idling 51 0 51 312 79 Amp Pink noise (1/8) Pink noise (1/4) Watt 70 V / Ch. 125 x4 1,7 0,9 176 63 114 387 98 16 Ω / Ch. 125 x4 1,5 0,8 156 63 94 319 80 32 Ω / Bridged 250 x2 100 V / Ch. 250 x2 1,4 0,7 152 63 89 305 77 8 Ω / Ch.
6. Appendix 6.5. Signal flow and VPL to output measurements The table below shows the block signal flow of the C...X Series amplifiers, as well as a table providing output power based on the settings of the rear panel VPL DIP-switches. VPL Set to 100 V peak Sensitivity: dBu Gain Vrms 1.2 0.9 +38 dBu 4.2 1.3 +35 dBu 7.2 1.8 +32 dBu 10.2 2.5 +29 dBu VPL Set to 63 V peak Sensitivity: dBu Gain Vrms -2.8 0.6 +38 dBu 0.2 0.8 +35 dBu 3.2 1.1 +32 dBu 6.2 1.6 +29 dBu 1.
7. Technical Specifications 7. Technical Specifications Model 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 Number of channels 4 4 4 4 4 8 8 4 4 Peak total output all channels driven 8800 W 6800 W 4800 W 2800 W 1600 W 2000 W 1000 W 1000 W 500 W Peak output voltage per channel 141 V 141 V 141 V 141 V 141 V 100 V / 70 Vrms 100 V / 70 Vrms 100 V / 70 Vrms 100 V / 70 Vrms Max. output current per channel 35.5 Arms 24.5 Arms 17.5 Arms 12 Arms 8.
8. Warranty and Support 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.
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.
Notes Notes 42 C SERIES Operation Manual rev 2.0.
Notes Notes C SERIES Operation Manual rev 2.0.
Intercooler, Class TD, R.SMPS, VPL, BEL, UVL and CAL are national and/or international trademarks or registered trademarks of Music Group. All other trademarks remain the property of their respective owners. Copyright © 2016 MUSIC Group Innovation Sweden AB. All rights reserved. Item no. OM-CSX labgruppen.
