The CKd 608 provides 625 watts per channel in eight 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.
| Rated Power @ 4 ohms (1kHz Single Channel Driven) | 750 watts Per Channel at |
|---|---|
| Rated Power @ 8 ohms (1kHz Single Channel Driven) | 750 watts Per Channel at |
| Rated Power @ 70.7 volts (1kHz Single Channel Driven) | 625 watts Per Channel at |
| Rated Power @ 100 volts (1kHz Single Channel Driven) | 625 watts Per Channel at |
| 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 Impedance | 4 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 Filter | 70 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 Impedance | 20K Ohms Balanced, 10K Ohms Unbalanced |
| Noise and Hum | > -95dB, "A" Weighted Reference to Rated Power @ 8 ohms |
| Current Consumption All Channels | |
| Idle | 120 watts, 240VA |
| 1/8 Power 8 ohms / 4 ohms | .67kW, 1kVA / 700W, 1.14kVA |
| 1/3 Power | 1.7kW, 2.5kVA / 1.85kW, 2.8kVA |
| Thermal Emission All Channels (BTU/Hour) | |
| Idle | 406 btu/hr |
| 1/8 Power 8 ohms / 4 ohms | 636 / 700 |
| 1/3 Power 8 ohms / 4 ohms | 1270 / 1400 |
| Cooling | Temperature Dependent Variable Speed 80mm DC Fan |
| Controls | |
| Front | On/Standby/Remote AC Switch, 120V: Two Independent 21a Circuit Breakers, 230V: Two Independent 12A Circuit Breakers (Per 4 Channels) |
| Rear | 8 Channel Input Signal Attenuators, 8 Channel 100V/70V/LowZ Selection Switches, Two 3-position Connectors for STO In and STO Out, 8 Fault Relay outputs (NO/NC), 8 Control Voltage Inputs, NexSys Module Bay |
| Indicator Leds | |
| Front Panel | 8 Mute, 8 Fault, 8 ACL/IGM, 8 Signal, 8 Active, 1 Power |
| Rear Panel | 8 Mute, 8 Fault, 8 ACL/IGM, 8 Signal, 8 Active, 1 Power |
| Protection (per channel) | Over-Temperature, DC, Subsonic, Incorrect Loads, Short-Circuit, Over-Current |
| Unit Protection | Over/Under AC Voltage, Fan Operation |
| Connectors | |
| Input | Eight 3-Position Euro-Style Detachable Terminal Blocks |
| Output | Four 4-Position Barrier Strip Terminal Blocks with Screws |
| Construction | 14-Gauge Aluminum Reinforced Chassis with 12-Gauge Steel Rack Ears |
| Power Requirements | 120 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 Weight | 29.6 lbs (13.43 kg) |
| Net Weight | 34.6 lbs (15.7 kg) |
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
