Lab Gruppen C88:4

General
Number of amplifier channels

4
Peak total output all channels driven

8800 W
Peak output voltage per channel

141 V
Max output current per channel

35.5 Arms
Max output power (all channels driven)
16 ohms

650 W
8 ohms

1250 W
4 ohms

2100 W
2 ohms

2200 W
Hi-Z per ch. (all ch.’s driven): 70 Vrms / 100 V peak

2200 W
Max output power bridged
16 ohms

2500 W
8 ohms

4200 W
4 ohms

4600 W
2 ohms

Not recommended 1
Bridged per ch.: 70 Vrms / 100 V peak

Not recommended 1
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
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: 30 A / NEMA 5-30P; 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