Võimendi Lab Gruppen C28:4

Võimendi Lab Gruppen C28:4

Transport - kokkuleppel.

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

W: 483 mm (19”), H: 88 mm (2 U), D: 343 mm (13.5”)

Weight 12 kg (26.4 lbs)

Finish: Black painted steel chassis with gray painted steel front