Crown Audio K Series Advanced Features, Protection Systems, 5.1.1 TLC, Out-of-bandFiltering, Fuse

K Series Power Amplifiers

5 Advanced Features

NOTE: For detailed information about these Crown amplifier features, please consult the Crown Amplifier Application Guide, available on the Crown website at www.crownaudio.com.

5.1 Protection Systems

Your Crown amplifier provides extensive protection systems, including protection against shorted outputs, open circuits, DC, mismatched loads, general overheating, high-frequency over- loads and internal faults.

5.1.1 TLC

If the amplifier starts to overheat, the thermal level control system will subtly and dynamically reduce the gain as needed. Trans- former overheating (extremely unlikely) will result in a temporary shutdown. When the amplifier has cooled to a safe temperature, the transformer will automatically reset itself.

5.1.2 Out-of-band Filtering

An 8-Hz high-pass filter protects the amplifier and loads from subsonic frequencies. A 30 kHz low-pass filter offers protection from ultrasonic frequencies.

5.1.3 Inrush Limiting

The “soft-start” feature prevents the amplifier from drawing a large inrush current when it is first turned on.

5.1.4 Fuse

A fuse is provided to protect the power supplies from excess cur- rent. It is located on the back panel below the power cord.

K-Series amplifiers that are configured to use 100-120 VAC power should use the following fuses:

K2: 20-amp fuse.

K1: 15-amp fuse.

K-Series amplifiers that are configured to use 200-250 VAC should use the following fuses:

K2: 10-amp fuse.

K1: 8-amp fuse.

5.2 Advanced Features

•BCA (Balanced Current Amplifier) technology allows high levels of power output without all the associated heat found in a conventional amplifier. This highly efficient design works without using a cooling fan.

•Accurate, uncolored sound with very low distortion.

•High damping factor for tight, clean bass response.

•Advanced design for energy conservation.

•Versatile, handling a wide range of speaker impedances and outputs.

•Switchable input sensitivity.

•“Soft Start” feature prevents the amplifier from drawing large currents when it is first turned on.

•Can be mounted in standard 19-inch (48.3-cm) rack. Uniquely molded, cast-aluminum front panel provides exceptional air circulation.

•Advanced protection circuitry guards against shorted out- puts, open circuits, DC, mismatched loads, general over- heating, high-frequency overloads and internal faults.

•Mono mode switches allow you to set up your amps/speak- ers in the configuration that best suits your needs, with combined amp inputs, combined amp outputs, or both.

•Backed by the industry’s ONLY three-year, no-fault, fully transferable warranty.

Operation Manual page 13