Legacy Series - CR670
The CR670 is the first CR series amplifier built specifically for 70-volt commercial installations. This amplifier delivers 600 watts of mono power at 70 volts in a quiet, passively-cooled, rugged three rack-space package. Professional quality at a very affordable price.
Overview
Binding strip connectors, versatile inputs including optional specialized microphone / line input control modules with trim and EQ controls make the CR670 the ONLY unit required to operate a 70-volt background music / paging system.
Physically, the amplifier consists of a heavy-gauge (yet lightweight) aluminum chassis finished in a durable baked-on black finish. All electronic components are mounted on high-grade glass-epoxy circuit boards and include low-noise metal film resistors.
Specifications
| Amplifier class | A / B |
| Continuous Average Power Bridged BCD (Watts) | 600 @ 70 Volts |
| Burst Average Power Bridged BCD (Watts) | 850 @ 70 Volts |
| Frequency Response (Hz, +/- 1dB) | 50 - 20k |
| Hum and Noise (un / Aweighted -dB) | -100 |
| THD -1kHz- 4 OHMS | 0.0001 |
| THD - 20Hz-20kHz, 4 Ohms | 0.0015 |
| Slew Rate Bridged (V/uS) | 40 |
| Damping Factor (30 Hz - 400 Hz @ 8 Ohms) | 450 |
| Crosstalk (1kHz / 20Hz-20kHz) | -75 / -60 db |
| Input Impedance - Bal/Unbal (Ohms) | 20k / 10k |
| Input Sensitivity (Vrms) For Full Power Out | 1.4 V |
| Max Voltage Gain (dB) | 34 |
| CMRR @ 60Hz (min/typ) | 48 / 56 db |
| Protection | DC, Load, Thermal |
| Limiter | Peak |
| Cooling | Internal Fan |
| Cooling Path | Front To Rear |
| Inputs - Other | XLR / 1/4 inchTRS Combi (x2), Barrier Strip |
| Outputs - Binding Post | 1 |
| Outputs - Other | Barrier Strip |
| Power Consumption (typ/max) | 540 / 720 Watts |
| Rack Spaces | 3 |
| Transformer Type | Torroidal |
| Exterior Finish | Baked, Black Painted |
| Other Features | ** Built specifically for 70 volt commercial installations |
| Dimensions (DWH /D fm ears, inches) | 19 x 13 x 5.25 |
| Dimensions (DWH /D fm ears, cm) | 48 x 33 x 13 |
| Weight (lbs / kg) | 30 / 13.6 |
Specifications subject to change without notice