Data Sheet

WWW.LABGRUPPEN.COM
An Installation Amplifier without Compromise
Installed or on tour, uncompromising quality begins with superior
sound. Over the past decade, the sound of Lab.gruppen ampliers
has earned praise from renowned FOH engineers and owners of the
world’s premier sound rental companies. At the core of the
C Series high-power* model’s tight and transparent sound is
patented Class TD technology. As a proprietary implementation of
tracking Class D, Class TD approaches the exceptional efciency of
Class D while retaining the superior sonic quality of the best Class B
output stages.
A Regulated Switch Mode Power Supply (R.SMPS) contributes
to the remarkable efciency of the C Series high-power models,
while at the same time providing stable operation even with wide
uctuations in mains voltage. R.SMPS also works in conjunction
with Class TD to give extraordinary power density. More channels
with more power are condensed into a smaller package, allowing
C Series ampliers to minimize rack space requirements and reduce
installation costs.
Extreme power density demands efcient cooling, and here
Lab.gruppen’s Intercooler® proves remarkably effective. Thousands
of small copper cooling ns dissipate heat, and all output devices
are mounted on one row perpendicular to airow for uniform
cooling.
C Series ampliers are uniquely capable of adapting to a wide
variety of demanding load conditions. Each channel has an
individually congurable Voltage Peak Limiter (VPL), which allows
the output to be optimized for any loudspeaker load – whether
one massive subwoofer or a series of small 100 V loudspeakers.
VPL works in combination with adjustable input gain to achieve
maximum headroom regardless of input levels or output
impedances.
To assure reliability, and minimize service interruptions, C Series
ampliers offer comprehensive warning and protection features.
Whenever faulty wiring, improper use, or extreme ambient
temperatures threaten trouble, a C Series amplier gives clear and
accurate warning indications. Protection measures are inserted only
when dangerous thresholds are passed. Conditions are re-checked
at six-second intervals, and normal operation resumes when
measurements return to nominal.
Every C Series amplier is ready for the NomadLink network right
out of the box. With NomadLink, key amplier parameters are
displayed via DeviceControl software, and remote control of channel
mutes and power on/off is under network control. (NomadLink
requires the separate NLB 60E NomadLink Bridge & Network
Controller.)
• 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
▸ Unprecedented power density – Total output of 4800 W
(4 ohms) in a 2U cabinet
▸ Four channels – All channels bridgeable for 2- or 3-channel
congurations
▸ Lo-Z or Hi-Z (70 V / 100 V) – Selectable per channel, normal or
bridged
▸ PatentedClassTDampliertopology
▸ Voltage Peak Limiter (VPL ) – Congurable per channel to
optimize each output for connected loads
▸ Phoenix-type input connectors
▸ Screw terminal output connectors
▸ Comprehensive protection and warning – Excessive output
current, DC, high temperature, very high frequency (VHF), short
circuit, open load, mains fuse protection, and soft start
▸ EfcientanduniformIntercooler®cooling
▸ NomadLink®networkready
C 48:4
Technical Data
C Series: Dedicated Installation Amplifiers