Lab Gruppen C 28:4

Sale price$ 3,599.00
SKU: LAB-C28:4

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Lab Gruppen C 28:4

Model

Lab Gruppen C 28:4

2800W 4-Channel Amplifier with NomadLink Network Monitoring and Dedicated Control for Install Applications

The C 28:4 is one of two mid-power, four-channel amplifiers in the C Series family. Attractively packaged in a 2U chassis, it provides 4 × 700 W output into 4 ohm loads.

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.

Specification

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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