C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3
Страница 1: ...Rev 2 2 3 Item no OM CS Operation Manual C Series Dedicated Installation Amplifiers C 88 4 C 68 4 C 48 4 C 28 4 C 16 4 Operation Manual ...
Страница 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 ...
Страница 3: ... equipment to dripping or splashing and ensure that no objects filled 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 serv...
Страница 4: ...e par l utilisateur Confier l entretien àpersonnel qualifié 1 6 FCC Compliance Notice 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...
Страница 5: ...ls 1 7 3 Speaker damage Your amplifier 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 amplifier s attenuators can be used to reduce the overall gain an increase of the input signal can result in full output...
Страница 6: ...Features 2 2 2 1 Class TD amplifier and Regulated Switch Mode Power Supply R SMPS 2 2 2 2 Amplifier gain 2 2 2 3 Voltage Peak Limiter VPL 2 2 2 4 Protection and performance optimization 2 2 2 5 NomadLink Ethernet control and monitoring network 3 3 Installation 4 3 1 Unpacking 4 3 2 Mounting 4 3 3 Cooling 5 3 4 Operating voltage 5 3 5 Grounding 6 4 Quick Guide Overview 7 4 1 Front Panel overview 7 ...
Страница 7: ...5 5 3 Very High Frequency protection 19 5 5 4 DC protection 20 5 5 5 High impedance warning open load 20 5 5 6 Low impedance protection short circuit 20 5 5 7 Temperature protection 21 5 5 8 Power Average Limiter PAL 21 5 5 9 Soft Start 21 5 6 Front panel monitoring and adjustments 22 5 6 1 Level indicators 22 5 6 2 Level adjust 22 5 6 3 Mute indication 23 5 6 4 Performance warning and fault indic...
Страница 8: ...guration 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 100 reliability in normal use By packing four or eight channels of reconfigurable power amplification into a 2U chassis the C...
Страница 9: ... maintain maximum power output while avoiding a poor signal to noise ratio This gain adjustment feature makes it easier to achieve an optimal balance between headroom and noise floor 2 2 3 Voltage Peak Limiter VPL The Voltage Peak Limiter VPL feature allows user adjustments that determine maximum voltage output thus matching the amplifier to the connected speaker load Whether the connected load is...
Страница 10: ...e 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 amplifiers to remain on standby with no power consumption Cable connections can be daisy chained for easier system setup This also reduces total component costs simplifies installation and makes daily operation more convenient The...
Страница 11: ... Save the carton and packing materials for the carrier s inspection Should you ever need to ship the amplifier always use the original packaging materials 3 2 Mounting The amplifier is two rack units high 2U and will fit 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 airflow from front to rear of the amplifier must be ...
Страница 12: ...w the exhaust to escape If the amplifier 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 ind...
Страница 13: ...try 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 confident of your competence to replace the mains plug engage qualified personnel to do the job Once a suitable AC supply is connected the amplifier can be turned on using the front panel power switch The amplifier then goes th...
Страница 14: ...ont cover may be made tamper resistant by replacing the thumbscrew with a Philips head or safety Torx screw Thread size is M3 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 illuminat...
Страница 15: ...gnal 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 or C D bridged PAL Power on Green PAL Power Average Limiter active Red Option active Yellow NomadLink network active Blue When no VPL CPL or PAL indicators are illuminated and the VPL DIP switch is set to maximum at the specified nominal load the amplifier channel...
Страница 16: ... 23 dB to 44 dB in 3 dB steps Option active Available for future upgrades Fan Masked When on engages the intelligent fan feature which lowers fan speed when no signal is present Bridged Mode Switches the channel pairs A B and or C D into bridged mode operation and inserts automatic 6 dB of gain compensation VPL Voltage Peak Limiter adjustment is provided for eight individual levels Select the sett...
Страница 17: ... details please refer to instructions supplied with the NLB 60E unit The NomadLink connections use standard straight Cat 5 RJ45 equipped cables For a safer mechanical connection it is possible to use Neutrik EtherCon XLR type housings on the cables The OUT port from the NLB 60E must be connected to the IN port of the first amplifier The OUT port from the first amplifier in turn connects to the nex...
Страница 18: ...IN OUT NOMADLINK IN OUT NOMADLINK 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 1 2 1 2 ...
Страница 19: ...is almost impossible to clip Overall amplifier 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 infinity The CPL Current Peak Limiter section dynamically limits the input signal based on three parameters ...
Страница 20: ...C 48 4 C 28 4 and C 16 4 Operation Manual rev 2 2 3 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 ...
Страница 21: ...bles 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 si...
Страница 22: ... 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 4 amplifier channels before line drivers would 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...
Страница 23: ...tiometers 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 ...
Страница 24: ...he correct setting depends on the system type low or high impedance and the specific load connected to the channel Since each channel can be configured to deliver either very high voltage peak power OR high current draw at low impedances it is important to set the VPL correctly To configure an individual output channel for a constant voltage system you simply adjust the DIP switches to the desired...
Страница 25: ...n 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 fixed at which time the output will automatically un mute An input signal must be present to allow detection of short circuit or low impedance c...
Страница 26: ...uency 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 continu ing 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 so...
Страница 27: ...nt at the output indicates a hardware malfunction that requires servicing of the amplifier 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 amplifier The fault in indicated by a red Sig Hi imp LED The indicator is green when a valid load is present...
Страница 28: ... 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...
Страница 29: ...e 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 amplifier has detected an open load no speaker is connected For more detailed signal level indications use the DeviceControl software application 5 6 2 Level adjust Step Attenuation Step Attenuation 1 Min Inf dB 12 8 7 dB 2 Inf dB 13 7 4 dB ...
Страница 30: ...d by a flashing LED If the amplifier goes into thermal protect output muted the LED illuminates constant yellow VHF Very High Frequency protection yellow indicates that potentially harmful continuous high frequen cies have been detected on the input signal The output is muted PAL Power Average Limiter red indicates that the amplifier is limiting because the power supply and or the mains inlet fuse...
Страница 31: ...and so on If a closed loop network is desired for improved redundancy highly recommended the last amplifier 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 Optimal NomadLink performance can only be assured when using Cat 5 cables However as NomadLink is only using two wires plus ground for communication and phant...
Страница 32: ...p 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 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 proto col Cable distances between NLB 60E and your PC follow standard rules for Ethernet systems Conta...
Страница 33: ...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 amplifier control functions fault and warning notifications that would otherwise be displayed via the DeviceControl software can be replicated in a third party control GUI Please note t...
Страница 34: ...ion Q What are the maximum cable lengths allowed when using the NomadLink network A NomadLink uses a daisy chain topology to connect amplifiers 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 con necting a return cable to the NLB 60E from the last amplifier General rules of cable lengths The maximum cable length ...
Страница 35: ...2 100 V Ch 2000 x 4 26 2 13 1 1838 1000 838 2860 721 200 V Bridged N R Pink noise max power 3 8 Ω Ch 1250 x 4 30 0 16 0 2006 2140 1145 1221 860 918 2935 3133 739 789 16 Ω Bridged 2500 x 2 4 Ω Ch 2100 x 4 30 0 16 0 2127 2268 1230 1312 896 956 3058 3263 770 822 8 Ω Bridged 4200 x 2 2 Ω Ch 2300 x 4 30 0 16 0 1983 2115 1016 1084 966 1031 3297 3519 831 886 4 Ω Bridged 4600 x 2 100 V Ch 2000 x 4 30 0 16...
Страница 36: ...30 0 16 0 1957 2087 1023 1091 934 996 3188 3399 803 856 4 Ω Bridged 2400 x 2 100 V Ch 1600 x 4 30 0 16 0 2208 2355 1356 1446 852 909 2908 3102 733 782 200 V Bridged 3200 x 2 Mains connector 230 V CE version 16 A CEE7 Mains connector 115 V ETL version 20 A 5 20P 1 The amplifier s PSU operates as a non resistive load so the calculation Volts x Amps Watts would not be correct Instead measured and spe...
Страница 37: ... Mains connector 230 V CE version 16 A CEE7 Mains connector 115 V ETL version 20 A 5 20P 1 The amplifier s PSU operates as a non resistive load so the calculation Volts x Amps Watts would not be correct Instead measured and specified here is what is known as the Active Power in the amplifier providing useful real world values of power consumption and heat dissipation 2 Current draw figures measure...
Страница 38: ... 0 843 300 543 1853 467 8 Ω Bridged 600 x 2 100 V Ch 700 x 4 21 4 10 7 1458 933 525 1790 451 200 V Bridged 1400 x 2 Mains connector 230 V CE version 16 A CEE7 Mains connector 115 V ETL version 20 A 5 20P 1 The amplifier s PSU operates as a non resistive load so the calculation Volts x Amps Watts would not be correct Instead measured and specified here is what is known as the Active Power in the am...
Страница 39: ...5 A 5 15P 1 The amplifier s PSU operates as a non resistive load so the calculation Volts x Amps Watts would not be correct Instead measured and specified here is what is known as the Active Power in the amplifier providing useful real world values of power consumption and heat dissipation 2 Current draw figures measured at 230 V 115 V figures are 230 V figures multiplied by two 3 Figures measured...
Страница 40: ...e subject to change without notice 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 8800 W 6800 W 4800 W 2800 W 1600 W 2000 W 1000 W 1000 W 500 W 141 V 141 V 141 V 141 V 141 V 100 V 100 V 100 V 100 V 35 5 Arms 24 5 Arms 17 5 Arms 12 Arms 8 5 Arms 8 Arms 5 6 Arms 8 Arms 5 6 Arms 650 W 650 W 625 W 600 W 400 W 250 W 125 W 250 W 125 W 1250 W 1200 W 1000 W 700 W 400 W...
Страница 41: ...nections or accessories operation with faulty as sociated 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 responsibil ity is limit...
Страница 42: ...oduct 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 4 Ship ...
Страница 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 ...
Страница 44: ...L ab gr u pp e n A B S w e d e n int e rnationa L contact info L abgr u pp e n com U S C O N T A C T info tc G A M E R I C A S com w w w l a b g r u p p e n c o m Operation Manual ...
