Lab.gruppen C Series C 10 4X Installation Manual - More Power
More power
C 28:4 (4 x 700 W)
All power ratings @ 4 ohms
High efficiency and power density
Lab.gruppen C Series high-power
amplifiers pack more useful power
into a smaller space, often reducing the
total rack space required by as much
as 50%. High efficiency reduces the
AC mains current supply requirements,
and also trims amplifier room cooling
costs. Overall cost reductions are
significant in large installations such
as stadiums and arenas, convention
centers, and larger auditoriums and
houses of worship. Cost of operation
over time is greatly reduced.
Class TD and R.SMPS
Both the efficiency and exemplary
sound quality of C Series high-power
amplifiers are the result of two
proprietary Lab.gruppen technologies:
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
amplifiers incorporate Lab.gruppen’s
patented Intercooler
®
to maximize
heat dissipation. Thousands of tiny
copper fins expose more surface area
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.
The Class TD output stage and the
R.SMPS (Regulated Switch Mode Power
Supply). The patented Class TD topology
- a breakthrough in amplifier design -
utilizes a sonically pure Class B stage
for the audio path to the loudspeakers
in combination with a high-frequency
tracking rail voltage derived from the
Class D concept. This combination
produces a flat frequency response
into reactive loads, with extremely low
distortion and no sonic coloration.
The Regulated Switch Mode Power
Supply (R.SMPS) ensures that the
amplifier will deliver stable output
The C Series high-power platform comprises four models, each
specifically designed for applications demanding high power output
for large sound reinforcement systems.
Common:
Power on
Power Average Limiter (PAL)
NomadLink
®
network active
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)
Barrier strip 2-pole output
connectors
3-pin Phoenix,
electronically balanced
input connectors
Mains Inlet (115 V / 230 V)
NomadLink
®
In and Out ports
Network indicator
Accurate indicators
Models:
Input gain, Fan masked,
VPL voltage select, VPL mode,
Bridge mode
Dust filters (accessible behind grille)
Mains power switch
Remote power active
DIP-switch matrix
C 68:4 shown
Class TD technology
Class TD supply rails closely track the output
waveform for high effi ciency and extremely low
distortion.
Pure copper Intercooler
®
fins
Characteristics of different power
supply designs:
R.SMPS provides stable voltage down to 90 V (115
V nominal) or 180 V (230 V nominal).
Drops in mains voltage produce proportional drops
with typical toroidal power supplies.
Other typical supplies show severe rail voltage drops
due to semi-conductor losses, potentially causing
current limiting or shutdown.
2
1
3
130
65
140
70
150
75
160
80
170
85
180
90
190
95
200
100
210
105
220
110
230
115
240
120
250
125
60
70
80
90
100
110
120
130
140
50
150
160
Mains Voltage [V]
Rail V
oltage [V]
C 68:4 (4 x 1700 W)
C 48:4 (4 x 1200 W)
C 16:4 (4 x 400 W)