LAB.GRUPPEN C 5:4X Technical data

C 5:4X

Technical Data

C Series: Dedicated Installation Amplifiers

▸ High channel density reduces space requirements and installa-

tion 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 output stage based on Class D topology

▸ High efficiency for lower thermal stress

An Installation Amplifier without Compromise

Lab.gruppen amplifiers 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 amplifier. By offering an
unmatched combination of channel density, operating efficiency and
configuration flexibility, 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 per­formance, 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 efficiency 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 configured for a specific application or
load condition. Input gain is selectable in two -channel groups, and a
35 Hz high pass filter 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.

▸ General Purpose Input/Output (GPIO) – Compatible with

third-party control systems

▸ NomadLink

▸ Universal Power Factor Corrected PSU with IEC inlet

▸ Efficient cooling – Dual variable speed, intelligent fans and

parallel airflow over output devices provide uniform cooling

▸ Comprehensive circuit protection and fault indication

▸ Phoenix-style input connectors and barrier strip output

connectors

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 Ethernet­linked PC. With NomadLink, key amplifier 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 amplifier 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.

®

network ready

Applications

▸ Auditoriums
▸ Performing Arts Centers
▸ Convention Centers
▸ Stadiums and Arenas
▸ Theme Parks
▸ Hotels
▸ Houses of Worship

▸ Restaurants
▸ Clubs
▸ Educational Establishments
▸ Boardrooms
▸ Museums
▸ Offices
▸ Shopping Malls
▸ Transportation Facilities

* Maximum continu ous output power, all chann els

driven, VP L set at 100 V and Gain set at 32 dB

Specifications C 5:4X

General

Number of channels 4
Peak total output all channels driven 500 W
Peak outpu t voltage pe r channel 100 V
Max. ou tput current p er channe l 5.6 Ar ms

Max. O utput Power

Per ch. (all ch.’s driven) 125 W 125 W 12 5 W 60 W
Bridged per ch. 250 W 250 W 125 W n.r.

Perfo rmanc e with Ga in: 32 dB and VPL: 100 V

THD 20 Hz - 20 kHz for 1 W <0.1%
THD at 1 kHz and 1 dB below clipping <0.05%
Signal To Noise Ratio >112 dBA
Channel separation (Crosstalk) at 1 kHz >70 dB
Frequency response (1 W into 8 ohms) +0/-3 dB 6.8 Hz - 34 kHz
Input impedance 20 kOhm
Common Mode Rejection (CMR) >50 dB, 20 Hz to 20 kHz
Output impedance @ 100 Hz 48 mOhm

Voltage P eak Limi ter (V PL), max . peak o utput

VPL, selectable per ch. (V)
VPL, selectable when bridged ( V)
Voltage Peak L imiter mode (per ch.) Hard / Soft

Gain and Level

Amplifier gain selectable (all channels)
– rear-panel switches
Default gain 32 dB
Level adjustm ent (per ch.) Front-panel potentiometer, 21 position detented from -inf to 0 dB, hidden behind security panel/dust filter grille

Connectors and switches

Input connectors (per ch.) 3-pin Phoenix, electronically balanced
Output connectors (per ch.) Barrier strip 2-pole screw terminals
Output bridge mode A+B, C+D, E+F, G+H, inputs A, C, E, G are signal source
High pass filter Fixed at 35 Hz, switchable per channe l
NomadLink
Intelligent fans (on/off) Yes, depending on presence of output signal
Power on/of f and Rem ote enable on/off Individual switches on f ront panel
Cooling Two fans, front-to-rear airflow, temperature controlled speed
General Purpose Outputs (GPO) Contact Closure types, 2-pole Phoenix
General Purpose Inputs (GPI) Contact Closure types, 2-pole Phoenix

Front-panel indicators

Common NomadLink Network; Power Average Limiter (PAL)

®

network On board, 2 x RJ45 connectors, IN and OUT

3)

1) 3)

1)

Per channel

Power

Operating vo ltage, 23 0 V / 115 V nominal Universal p ower supply 65-2 65 V
Minimum power-up volt age, 230 V / 115 V 80 V
Power Average Limiter (PAL)
Power Factor Correction (PFC) Yes
Soft sta rt / Inrus h current draw Yes / max. 5 A
Mains connector IEC Inlet

Dimensions W: 483 mm (19”), H: 88 mm (2 U), D: 343 mm (13.5”)
Weight 8.5 kg (18.75 lbs.)
Finish Black painted steel chassis with gray painted steel front

2)

16 ohms

8 ohms 4 ohms 2 ohms

100, 63, 45, 32 V
200, 126, 90, 64 V

29, 32, 35, 38 dB

Signal present / High-impedance; Voltage Peak Limiter (VPL); Current Peak Limiter (CPL):
Very High Frequency (VHF); High temperature; Fault; Mute

Yes

Approvals CE, ANSI/UL 60065 (ETL), CSA C22.2 NO. 60065, FCC

Note 1): Automatic -6 dB gain compensation when bridging channels. Ch.’s A+B and/or C+D, E+F, G+H, can be bridged individually.
Note 2): PAL can reduce the maximum output power to keep the power supply operating safely, and/or to prevent excessive current draw tripping the mains breaker.

Refer to Operation Manual.
Note 3): For sine waves, peak voltage output values translate to Vrms with the formula V/1.41 = Vrms. E.g. 100 V peak equals app. 70 V peak. Hence, outputs can be set for
high-impedance loads without requiring a transformer.
Note 4): Regarding n.r. (not recommended) notes: The amplifier will be fully operational in bridge-mode into 2 ohm and high impedance (Hi-Z) loads, but due to physical constraints
in the construction, the max. output power will not be significanty higher than running individual channels and therefore this mode of operation is not recommended.

All specifications are subject to change without notice.

Hi-Z 70 Vrm s/100 V p eak Hi-Z 100 Vr ms/141 V pea k Hi-Z 140 Vrm s/20 0 V peak

125 W n.a. n.a.

4)

n.a. n.a 250 W

2)

; Power on

internationaL contact ▸ in fo@Labgruppe n.com | uS & cana da contact ▸ [e-mail]

Lab.gru ppen ab ▸ Sweden

www.labgruppen.co m

Item no. TDS-C54X_V8