DARA-4B300 4x 300W DSP Low Impedance / 100V Installation Amplifier

Channels

Number of output channels: 4 Output connection type: 2-pin Euroblock.  Pitch: 508mm Output configuration: 2Ω 4Ω 8Ω 100V 70V and 4/8Ω in Bridge Mode Number of input channels: 4 Input connection type: 3-pin Euroblock balanced pitch 35mm Input configuration: Digital Matrix 4 In x 4 Out

Output Power - All Channels Driven @1Khz @Cf9Db @ 1%Thd

Max output power @ 8Ω: 300W Max output power @ 4Ω: 300W Max output power @ 2Ω: 300W Max output power @ 4Ω bridge mode: 600W Max output power @ 8Ω bridge mode: 600W Max output power @ 100V: 300W Max output power @ 70V: 300W

Output Power - Single Channel Driven @1Khz @Cf9Db @ 1%Thd

Max output power @ 8Ω: 300W Max output power @ 4Ω: 300W Max output power @ 2Ω: 300W Max output power @ 4Ω bridge mode: 600W Max output power @ 8Ω bridge mode: 600W Max output power @ 100V: 300W Max output power @ 70V: 300W

Signal

Voltage gain: 33.8dB Input sensitivity: 0dBV2.21dBu1Vrms Input impedance: 20k Max input level: +23 dBu Frequency response: 15Hz - 22kHz (-3dB 1W any load) THD + Noise: 80dB (1kHz) CMRR: 73dB

Electrical

Power supply: Universal regulated SMPS with PFC AC mains requirement: 100-240V @ 50-60Hz (±10%) Power factor correction: > 081 AC mains connector: IEC C14 inlet

Power & Heat @230Vac - 1/4 Power @ 4Ω (All Channels Driven)

Power: 473W605 VA Current Draw: 264 Arms Thermal Loss: 1488 kcal/h5904 BTU/h

Power & Heat @230Vac - 1/8 Power @ 4Ω (All Channels Driven)

Power: 2763W293 VA Current Draw: 245 Arms Thermal Loss: 1086 kcal/h4311 BTU/h

Power & Heat @230Vac - Idle

Power: 543W140 VA Current Draw: 062 Arms Thermal Loss: 467 kcal/h1853 BTU/h

Power & Heat @230Vac - Standby/Sleep Mode

Power: 5W60 VA Current Draw: 027 Arms Thermal Loss: 43 kcal/h171 BTU/h

Power & Heat @120Vac - 1/4 Power @ 4Ω (All Channels Driven)

Power: 4686W490 VA Current Draw: 41 Arms Thermal Loss: 145 kcal/h5754 BTU/h

Power & Heat @120Vac - 1/8 Power @ 4Ω (All Channels Driven)

Power: 2676W287 VA Current Draw: 24 Arms Thermal Loss: 1011 kcal/h4011 BTU/h

Power & Heat @120Vac - Idle

Power: 502W93 VA Current Draw: 073 Arms Thermal Loss: 432 kcal/h1713 BTU/h

Power & Heat @120Vac - Standby/Sleep Mode

Power: 43W227 VA Current Draw: 019 Arms Thermal Loss: 37 kcal/h147 BTU/h

Technologies

Amplification technology: Class D Energy saving: Auto standby function selectable Efficiency: 76% Cooling: 3 fans Maximum fan noise: 57 dBA

Dsp

AD converters: 24 Bit Tandem™ @ 48kHz115dB-A Dynamic Range -  0.0018% THD+N DA converters: 24 Bit Tandem™ @ 48kHz120dB-A Dynamic Range -  0.0018% THD+N Sample rate converter: 24 bits @ 48kHz Internal precision: 32 bits floating point Latency: 15 ms Memory/Presets: 15 amplifiers presets40 Speakers presets (22 Ecler presets + 18 Custom presets) Delay: 20 ms (input) + 300 ms (output) for time alignment Equalizer: Custom FIR Parametric IIR: Peaking Low Shelf High Shelf AllPass 1st AllPass 2nd General Low General High Butterworth Low Butterworth High Bessel Low Bessel High Limiters: RMS and Peak voltage limiter Digital processing: 32 bits Inputs processing: Delay Parametric and Graphic EQ Compressor Outputs processing: Delay Parametric and Graphic EQ Polarity Compressor FIR filters RMS and Peak Limiter Others: Presets management Panels and Users Internal matrix Linking and Stereo options Selectable Auto-standby  Panel Operating Range Knobs and GPI Matrix Custom and Ecler speakers settings Network Parameters Finder Remote control and configuration via PULSO Series (Android / iOS App)

Protections

AC protection: Yes DC protection: Yes HF protection: Yes Short-circuit protection: Yes Clip limiter: Yes Thermal protection: Yes

Remote Control Connections

GPIs: x4 GPIs (0-10V) External MUTE: Yes contact

Local Control

Attenuators: Assignable front panel knobs Output mode settings: Back panel Dipswitch by pairs of channelsBRIDGE/2Ω/4Ω/8Ω/70V/100V RUN/SLEEP mode: Auto standby functionForced standby(Settings by embedded web application) Power ON/OFF: Front panel switch

Settings

Attenuators: Assignable front panel knobs Output settings: 2Ω/4Ω/8Ω/70V/100V/Bridge Mode output selection by pair of channels Auto standby function: Settings by embedded web application Auto standby threshold: -40dB Auto standby time: 90 seconds Power ON/OFF: Front panel switch

Connectivity

Ethernet: Ethernet Base-Tx 100Mb  CAT5 up to 100mSecondary RJ-45 port for Daisy-Chaining Programing and control: Embedded web application

Monitoring

Signal Present: SIGNAL LED (Green) per channel Cliping: CLIP LED (Red) per channel Protect: TH/PROT LED (Red) per channel Standby: STANDBY (Orange) per channel Mute: MUTE LED (White) per channel Limit: TH/PROT LED (Red) Thermal: TH/PROT LED (Red) per channel Data: DATA LED (White) per unit On: ON LED (Green) per unit

Digital Engine

Processor: 32 bits

Audio Converters

Sampling rate: 48kHz Resolution: 24 bits Dynamic range: 118dB

Physical

Operating temperature: -20⁰ to 40⁰ C-4⁰ to 104⁰ F Operating humidity: 10-90% RH non-condensing Storage temperature: -40⁰ to 70⁰ C-40⁰ to 158⁰ F Storage humidity: 10-95% RH non-condensing Installation options: Rack 19" installation & desktop Included accessories: 1 x EU & IEC power cords UKUS & CN plug adapters 4x Desktop feet 1x Rack 19" installation hardware 1 x Remote Volume connector (GPI) 1 x External Mute connector 6x Euroblock connectors (4x 3-pin blue for inputs and 2x 4-pin green for outputs) 2x Euroblock jumper. Dimensions: 484 x 44 x 296.6mm / 19 x 1.73 x 11.67 in. (WxHxD) Weight: 4.95kg / 10.91 lb Shipping dimensions: 590 x 80 x 474mm / 23.23 x 3.15 x 18.66 in. (WxHxD) Shipping weight: 7.60kg / 16.76 lb