Labgruppen c 28 4

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WWW.LABGRUPPEN.COM Specifications C 28:4 General Number of channels4 Peak total output all channels driven 280 0 W Peak output voltage per channel 141 V Max. output current per channel 12 A rms Max. Output Power 16 ohms 8 ohms 4 ohms2 ohms Hi-Z 70 Vrms/100 V peak Hi-Z 100 Vrms/141 V peak Hi-Z 140 Vrms/200 V peak Per ch. (all ch.s driven) 60 0 W70 0 W70 0 W30 0 W70 0 W 70 0 W n.a. Bridged per ch. 2000 W240 0 W60 0 Wn.r 1) n.a n.a. 14 0 0 W Performance with Gain: 35 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 30 mOhm Voltage Peak Limiter (VPL), max. peak output 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 Gain and Level Amplifier gain selectable (all channels) 3) – rear-panel switches 23, 26, 29, 32, 35, 38, 41, 44 dB Default gain 35 dB Level adjustment (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 and/or C+D, inputs A and C are input source NomadLink network On board, 2 x RJ45 connectors Intelligent fans (on/off) Yes, depending on presence of output signal Power on/off and Remote enable on/off Individual switches on front panel Cooling Two fans, front-to-rear airflow, temperature controlled speed Front-panel indicators 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 / 65 -135 V 4) Minimum power-up voltage, 230 V / 115 V171 V / 85 V Power Average Limiter (PAL) 5) Ye s 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 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 Approvals CE, ANSI/UL 60065 (ETL), CSA C22.2 NO. 60065, FCC Note 1): Regarding n.r. (not recommended) notes: The amplifier will be fully operational in bridge-mo\ de into 2 ohm and high impedance (Hi-Z) loads, but due to physical constraints in the construction, the max. output power will not be significantly higher th\ an running individual channels and therefore this mode of operation is not recommended. Note 2): 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 Vrms. Hence, outputs can be set for high-impedance loads without requiring a transformer. Note 3): Automatic -6 dB gain compensation when bridging channels. Ch.s A+B and/or C+D, can be bridged individually. Note 4): Separate 230 V or 115 V versions available. Not selectable on the amplif\ ier. Note 5): 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. All specifications are subject to change without notice. Item no. TDS-C284_V7 - 27.11.2014