Lab Gruppen C 28:4

SKU: Lab Gruppen C 28:4
$ 3,500.00
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C Series amplifiers are uniquely capable of adapting to a wide variety of demanding load conditions. Each channel has an individually configurable Voltage Peak Limiter (VPL™), which allows the output to be optimized for any loudspeaker load – whether a single large subwoofer or a series of small 100/70 V loudspeakers. VPL works in combination with adjustable input gain to achieve maximum headroom regardless of input levels or output impedances.

Every C Series is ready for the NomadLink® network right out of the box. With NomadLink, key amplifier parameters are displayed via DeviceControl software, and remote control of channel mutes and power on/off is under network control.

General
Number of amplifier channels 4
Peak total output all channels driven 2800 W
Peak output voltage per channel 141 V
Max output current per channel 12 Arms
Max output power (all channels driven)
16 ohms 600 W
8 ohms 700 W
4 ohms 700 W
2 ohms 300 W
Hi-Z per ch. (all ch.’s driven): 70 Vrms / 100 V peak 700 W
Max output power bridged
16 ohms 1400 W
8 ohms 1200 W
4 ohms 600 W
2 ohms Not recommended 1
Bridged per ch.: 140 Vrms / 200 V peak 1400 W
Performance
THD 20 Hz - 20 kHz at 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 - 20 kHz
Output impedance @ 100 Hz 30 mOhm
Gain, Sensitivity and Limiters
VPL, selectable per ch 2 141, 118, 100, 85, 71, 59, 50, 42 V
VPL, when bridged 2 3 282, 236, 200, 170, 142, 118, 100, 84 V
Voltage Peak Limiter mode (per ch.) Hard / Soft
Amplifier gain selectable (all channels) – rear-panel switches 3 23, 26, 29, 32, 35, 38, 41, 44 dB
Default gain 35 dB
Level adjustment (per channel) Front-panel potentiometer, 21 position detented from -inf to
Connectors and Buttons
Input connectors (per ch.) 3-pin Phoenix, electronically balanced
Output connectors (per ch.) Barrier strip 2-pole screw terminals
Output bridge mode A+B and/or C+D, inputs A and C are input source
NomadLink network On board, 2 x RJ45 connectors IN and OUT
Intelligent fans (on/off) Yes, depending on presence of output signal
Power Individual switches on front panel
Cooling Two fans, front-rear airflow, temperature controlled speed
Front-panel user interface
Common NomadLink Network; Power Average Limiter (PAL)5; Power on
Per channel Signal present / High-impedance; -10 dB and -4 dB output signal;Voltage Peak Limiter (VPL); Current Peak Limiter (CPL): Very High Frequency (VHF); High temperature; Fault; Mute
Power
Operating voltage, 230 V / 115 V nominal 130-265 V / 65 -135 V 4
Minimum power-up voltage, 230 V / 115 V 171 V / 85 V
Power Average Limiter (PAL) 5 Yes
Power Factor Correction (PFC) No
Soft-start / Inrush Current Draw Yes / max. 5 A
Mains connector 230 V CE: 16 A, CEE7; 115 V ETL: 20 A / NEMA 5-20P; C16:4: 15A/NEMA 5-15P
Dimensions
Dimensions W: 483 mm (19”), H: 88 mm (2 U), D: 343 mm (13.5”)
Weight
Weight 12 kg (26.4 lbs)
Finish
Finish Black painted steel chassis with gray painted steel front
Approvals
Approvals CE, ANSI/UL 60065 (ETL), CSA C22.2 NO. 60065, FCC
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