More Power - Lab.gruppen C Series C 10 4X Installation Manual

The C Series high-power platform comprises four models, each
specifically designed for applications demanding high power output
for large sound reinforcement systems.

More power

High efficiency and power density The Class TD output stage and the
Lab.gruppen C Series high-power R.SMPS (Regulated Switch Mode Power
amplifiers pack more useful power Supply). The patented Class TD topology
into a smaller space, often reducing the - a breakthrough in amplifier design -
total rack space required by as much utilizes a sonically pure Class B stage
as 50%. High efficiency reduces the for the audio path to the loudspeakers
AC mains current supply requirements, in combination with a high-frequency
and also trims amplifier room cooling tracking rail voltage derived from the
costs. Overall cost reductions are Class D concept. This combination
significant in large installations such
produces a flat frequency response
as stadiums and arenas, convention into reactive loads, with extremely low
centers, and larger auditoriums and distortion and no sonic coloration.
houses of worship. Cost of operation
over time is greatly reduced. The Regulated Switch Mode Power
Supply (R.SMPS) ensures that the
Class TD and R.SMPS amplifier will deliver stable output
Both the efficiency and exemplary
sound quality of C Series high-power Characteristics of different power
supply designs:
amplifiers are the result of two
160
proprietary Lab.gruppen technologies:
150
140
130
Class TD technology
120
110
100
90
80
70
60
50
130 140 150 160
65 70 75 80
1 R.SMPS provides stable voltage down to 90 V (115
V nominal) or 180 V (230 V nominal).
2 Drops in mains voltage produce proportional drops
Class TD supply rails closely track the output
with typical toroidal power supplies.
waveform for high effi ciency and extremely low
3 Other typical supplies show severe rail voltage drops
distortion.
due to semi-conductor losses, potentially causing
current limiting or shutdown.
power independent of deviations in
mains voltage. Sound remains powerful
and consistent even with fluctuations
in the mains supply. The high efficiency
of the R.SMPS contributes to the light
weight and small footprint of C Series
high-power amplifiers.
Intercooler Cooling System
®
With so much power output packed into
a small chassis size, cooling becomes
a critical factor. C Series high-power
Pure copper Intercooler
amplifiers incorporate Lab.gruppen's
patented Intercooler ® to maximize
heat dissipation. Thousands of tiny
170 180 190 200 210 220 230 240 250 copper fins expose more surface area
85 90 95 100 105 110 115 120 125
Mains Voltage [V]
for greater cooling efficiency. Also, the
Intercooler is mounted transverse to
®
airflow from the twin fans, so all output
devices benefit from uniform cooling.
The result is high continuous power
whenever required coupled with reliable
performance and a long service life.
Models:
Accurate indicators
Per channel:
Mute
Fault
Voltage Peak Limiter (VPL / CLIP)
-10 dB and -4 dB output metering
Signal present / High impedance
Bridge (per channel pair)
High Temperature (TEMP)
Very High Frequency (VHF)
Current Peak Limiter (CPL)
fins
®
Mains Inlet (115 V / 230 V)
NomadLink ® In and Out ports
Network indicator
C 68:4 (4 x 1700 W) C 48:4 (4 x 1200 W)
C 16:4 (4 x 400 W)
C 28:4 (4 x 700 W)
All power ratings @ 4 ohms
Common:
Power on
Power Average Limiter (PAL)
NomadLink
Dust filters (accessible behind grille)
Mains power switch
Remote power active
DIP-switch matrix
Input gain, Fan masked,
VPL voltage select, VPL mode,
Bridge mode
network active
®
C 68:4 shown
Barrier strip 2-pole output
connectors
3-pin Phoenix,
electronically balanced
input connectors