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Crest Audio CKd 604 625W 4-Channel High Power Amplifier
Part # 03611450
Model # CKd 604

The Crest CKd 604 provides 625 watts per channel in four channels. Each amplifier channel will operate to rated power in direct 70-volt, 100-volt, 8-ohm or 4-ohm modes, configurable per channel.

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Description

Details

The CKd 604 provides 625 watts per channel in four channels. Each amplifier channel will operate to rated power in direct 70-volt, 100-volt, 8-ohm or 4-ohm modes, configurable per channel.

CKd amplifiers are networkable through the Crest Audio NexSys Nx Dante-8 or Nx CobraNet 8 interface modules which is configured and managed using the MediaMatrix NWare software program for advanced control and audio routing. The Nx Dante-8 or CobraNet 8 module fits into the rear bay of CKd Series power amps and supports networked digital audio I/O via a Gigabit Ethernet connection. A Control Voltage input is included on each channel to allow external gain control, while the Fault output on each channel allows the CKd power amps to be wired to other monitoring systems. In addition, users can conserve energy by disabling channels that are not in use.

The CKd Series includes Crest Audio’s exclusive ACL (Active Clip Limiting), which automatically reduces gain at the onset of clipping to prevent amplifier and loudspeaker damage, and IGM (Instantaneous Gain Modulation), which monitors load current to protect against overloading.

Features

Features

  • Ultra-lightweight class D topology
  • Provide 625 watts per channel in four channels respectively
  • Each amplifier channel will operate to rated power in direct 70-volt, 100- volt, 8-ohm or 4-ohm modes, confi gurable per channel
  • Networkable through Crest Audio® Nx Dante-8™ NexSys control module to the Crest Audio NexSys 5 and Peavey MediaMatrix® NWare™ software programs for advanced control and audio routing
  • Control Voltage input is included on each channel to allow external gain control
  • Fault output on each channel allows CKd power amps to be wired to other monitoring system
  • CKd amplifers have the option to conserve energy by disabling channels that are not in use
  • Crest Audio’s exclusive ACL™ (Active Clip Limiting)
  • IGM™ (Instantaneous Gain Modulation) to protect against overloading
Specification
Rated Power @ 4 ohms (1kHz Single Channel Driven)750 watts Per Channel at <0.15%
Rated Power @ 8 ohms (1kHz Single Channel Driven)750 watts Per Channel at <0.1%
Rated Power @ 70.7 volts (1kHz Single Channel Driven)625 watts Per Channel at <0.15%
Rated Power @ 100 volts (1kHz Single Channel Driven)625 watts Per Channel at <0.1%
Rated Power @ 4 ohms (All Ch Driven 50% Duty Cycle)650 watts Per Channel at 1kHz
Rated Power @ 8 ohms (All Ch Driven 50% Duty Cycle)650 watts Per Channel at 1kHz
Rated Power @ 70.7 volts (All Ch Driven 50% Duty Cycle)625 watts Per Channel at 1kHz
Rated Power @ 100 volts (All Ch Driven 50% Duty Cycle)625 watts Per Channel at 1kHz
Minimum Load Impedance4 ohms
Frequency Response (-.5 dB @ 1W (8 ohm Load)10 Hz - 20 kHz
Damping Factor (8 ohms)>150:1 @ 20 Hz - 1 kHz
Input CMRR< -75 dB at 1kHz
Voltage Gain (Low Z)x 40 (32.0 dB
Voltage Gain (70V/100V)x 50 (34.0 dB)
High Pass Filter70 Hz, 3rd order HPF
Input Sensitivity (Low Z)1.27V for 1 kHz 4-ohm Rated Power
1.8V for 1 kHz 8-ohm Rated Power
Input Sensitivity (70V/100V)1.4V for 1 kHz (70V) 4-ohm Rated Power
2.5V for 1 kHz (100V) 8-ohm Rated Power
Input Impedance20K Ohms Balanced, 10K Ohms Unbalanced
Noise and Hum> -95dB, "A" Weighted Reference to Rated Power @ 8 ohms
Current Consumption All Channels
Idle85 watts, 170VA
1/8 Power 8 ohms / 4 ohms.67kW, 1kVA / 700W, 1.14kVA
1/3 Power1.7kW, 2.5kVA / 1.85kW, 2.8kVA
Thermal Emission All Channels (BTU/Hour)
Idle285 btu/hr
1/8 Power 8 ohms / 4 ohms445 / 490
1/3 Power 8 ohms / 4 ohms890 / 980
CoolingTemperature Dependent Variable Speed 80mm DC Fan
Controls
FrontOn/Standby/Remote AC Switch, 120V: Two Independent 21a Circuit Breakers, 230V: Two Independent 12A Circuit Breakers (Per 4 Channels)
Rear4 channel Input Signal Attenuators, 4 Channel 100V/70V/LowZ Selection Switches
Two 3-position Connectors for STO In and STO Out, 4 Fault Relay outputs (NO/NC), 4 Control
Voltage Inputs, NexSys Module Bay
Indicator Leds
Front Panel4 Mute, 4 Fault, 4 ACL/IGM, 4 Signal, 4 Active, 1 Power
Rear Panel4 Mute, 4 Fault, 4 ACL/IGM, 4 Signal, 4 Active, 1 Power
Protection (per channel)Over-Temperature, DC, Subsonic, Incorrect Loads, Short-Circuit, Over-Current
Unit ProtectionOver/Under AC Voltage, Fan Operation
Connectors
InputFour 3-Position Euro-Style Detachable Terminal Blocks
OutputTwo 4-Position Barrier Strip Terminal Blocks with Screws
Construction14-Gauge Aluminum Reinforced Chassis with 12-Gauge Steel Rack Ears
Power Requirements120 VAC 60 Hz or 230 VAC 50 Hz
Dimensions (H x W x D)3.48" (88.4 mm) x 19" (482.6 mm) x 20.3" (515.6 mm)
Gross Weight22 lbs (9.98 kg)
Net Weight25 lbs (11.4 kg)
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