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1.  Important Safety Instructions

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C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual  rev 2.2.3

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

1.1   Important Safety Instructions

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 amplifiers) 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  fit 

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  specified  by  the 

manufacturer.

12.  Use only with a cart, stand, tripod, bracket, or table specified 

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  qualified  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  apparatus  from  the 

mains.

16.  WARNING: To reduce the risk of fire of 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 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 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 flame rated VW-1.

To prevent electric shock do not remove top or bottom covers. 
No  user  serviceable  parts  inside.  refer  servicing  to  qualified 
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 qualifié seulment.
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.

This equipment conforms to the requirements 
of the EMC Directive 2004/108/EC and the 
requirements of the Low Voltage Directive 
2006/95/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 approved 
according to the U.S. safety standard ANSI/ 
UL 60065 and Canadian safety standard 
CSA C22.2 NO. 60065. ETL made the tests 
and they are a Nationally  Recognized 
Testing Laboratory (NRTL).

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 sufficient magni-
tude 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  Standards

1.3  Explanation of Graphic Symbols

       

Summary of Contents for C 88:4

Page 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...

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...

Page 3: ...his 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...

Page 4: ...ilisateur Confier l entretien personnel qualifi 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 Com...

Page 5: ...s 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...

Page 6: ...eatures 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 NomadLi...

Page 7: ...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 Aver...

Page 8: ...uration 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 hi...

Page 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...

Page 10: ...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...

Page 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 h...

Page 12: ...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 overheati...

Page 13: ...ry 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...

Page 14: ...nt 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...

Page 15: ...nal 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 activ...

Page 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 t...

Page 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 N...

Page 18: ...N 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 ca...

Page 19: ...s 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 stag...

Page 20: ...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 Pro...

Page 21: ...les 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 st...

Page 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 t...

Page 23: ...iometers 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...

Page 24: ...e 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...

Page 25: ...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 impedan...

Page 26: ...ency 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...

Page 27: ...t 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...

Page 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 re...

Page 29: ...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 spe...

Page 30: ...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 h...

Page 31: ...nd 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...

Page 32: ...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...

Page 33: ...or 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 c...

Page 34: ...on 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...

Page 35: ...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 Ch 1250 x 4 30 0 16 0 2006 2140 1145 1221 860 918 2935 3133 739 789 16 Bridged 2500 x 2 4 Ch 2100 x 4 30...

Page 36: ...957 2087 1023 1091 934 996 3188 3399 803 856 4 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 C...

Page 37: ...tor 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 me...

Page 38: ...543 1853 467 8 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 amp...

Page 39: ...he 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...

Page 40: ...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 14...

Page 41: ...ections 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 seri...

Page 42: ...duct 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 Inc...

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: ...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...

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