Recommended Load - 70 Volt line (70 Watts maximum).Frequency Response - 70Hz to 20 kHz.Equiv. Input Noise - 100 microVolt typical, A weighted 600 Ohm input.S/N Ratio - 114 dB @ 70 Watts.Gain - 40 dB The RA170 Power Amplifier was designed especially for the installation contractor. The RA170 is a single rack-space, mono unit with a choice of an RCA or 1/4" unbalanced input. The 70 volt speaker outputs are provided via spring-loaded terminals - no transformer is required for speaker connection. The front panel includes a Power indicator LED, a Volume control, and two Clip LEDs which indicate circuitry overload. The output circuitry is protected from momentary shorting and excessive load by a specially designed protective circuit.
Input Impedance - 47 k Ohms Size (W x H x D) - 19 x 1.75 x 5 (48 x 4.5 x 12.7cm) Weight - 5.5 lbs (2.5 kg)