Data Sheet

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An Installation Amplifier without Compromise
Lab.gruppen ampliers have earned an enviable worldwide
reputation for sonic excellence and rock-solid durability in touring
sound applications. These same qualities are now available for a
broad range of installed sound applications in the C 5:4X amplier.
By offering an unmatched combination of channel density,
operating efciency and conguration exibility, the C 5:4X presents
convincing performance and cost-saving advantages. Applications
include primary systems for theme parks, shopping malls, airports,
hotels and restaurants as well as auxiliary systems for performance
venues, houses of worship and numerous other installed sound
applications.
To achieve higher channel density without compromising per-
formance, Lab.gruppen engineers developed a new output stage
design. Based on a patented Class D circuit topology, these output
stages produce sustained high power levels with very low distortion
while maintaining efciency levels of near 90%. A new universal
switching power supply employs Power Factor Correction (PFC) to
stabilize current draw, and it accepts any mains voltage from 65 –
265 V (+/- 10%) @ 50 Hz or 60 Hz through the appropriate IEC cord.
The C 5:4X includes include unique features which enable each
unit – or even each channel – to be congured for a specic
application or load condition. Input gain is selectable in two-channel
groups, and a 35 Hz high pass lter may be inserted. All channels
are bridgeable in pairs, and Lab.gruppen’s exclusive Voltage
Peak Limiter (VPL) feature allows each channel to be individually
optimized for the reactive characteristics of the connected load.
For comprehensive remote monitoring and control, the C 5:4X
includes NomadLink network ports for connecting to an optional
NLB 60E NomadLink Bridge & Network Controller and an Ethernet-
linked PC. With NomadLink, key amplier parameters are displayed
via DeviceControl software, and remote control of channel mute
and power on/off is under network control. Alternatively, the GPIO
facilities allow access to key amplier functions via third-party
remote control systems.
To ensure a long and trouble-free service life, the C 5:4X
incorporates extensive features to safeguard internal circuits and
connected loads. Protection and warning circuits prevent damage
or service interruptions due to excessive current, DC at output,
over-temperature, non-musical VHF (very high frequencies), and
open load conditions. In addition, soft-start and PSU current limiting
protect the mains supply from interruptions due to tripped circuit
breakers or blown mains fuses.
• Auditoriums
• Performing Arts Centers
• Convention Centers
• Stadiums and Arenas
• Theme Parks
• Hotels
• Houses of Worship
• Restaurants
• Clubs
• Educational
Establishments
• Boardrooms
• Museums
• Ofces
• Shopping Malls
• Transportation Facilities
Applications
▸ High channel density reduces space requirements and
installation time
▸ High continuous output power of 125 W per channel at 70 V,
4 ohms, 8 ohms, and 16 ohms*
▸ All channels individually selectable for lo-Z or hi-Z
Loudspeakers (2 ohm – 16 ohm) and distributed systems can be
connected to the same unit
▸ Bridged operation – Channel pairs bridgeable for increased
output or for driving 100 V systems
▸ PatentedClassTDampliertopology
▸ Highefciencyforlowerthermalstress
▸ General Purpose Input/Output (GPIO) – Compatible with
third-party control systems
▸ NomadLink® network ready
▸ Universal Power Factor Corrected PSU with IEC inlet
▸ Efcientcooling–Dual variable speed, intelligent fans and
parallel airow over output devices provide uniform cooling
▸ Comprehensive circuit protection and fault indication
▸ Phoenix-style input connectors and barrier strip output
connectors
C 5:4X
Technical Data
C Series: Dedicated Installation Amplifiers