Krell Industries Monaural Amplifiers KMA-160 user manual

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45 Connair Drive
Orange, CT 06477-0533, USA
KMA-160 OWNER, S MANUAL: INSTALLATION & OPERATION INSTRUCTIONS
JUNE. !,.. 19.89
GENERAL INFORMATION
Thank you for purchasing the KMA-160 Monaural Amplifiers. The
KMA-i60 represents the absolute latest evolution in amplifier
technology and has many innovative design features. It is one of four
amplifiers in the new KRELL Programmable Series, the features of
which are are discussed below. There are several aspects of its
operation that require your speci

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Amplifiers dissipate much of the power they consume in heat. The KMA-160 should be installed in a location that provides unobstructed ventilation. If you have to install the units on shelves or in a cabinet, extra ventilation might be necessary. This can be easily done with fans in a variety of ways. Generally, with the front and rear open, 2 - 3 inches clearance each side and 8 inches above the amplifier, ventilation will be adequate. The dimensions of the KMA-160 are: 23" wide x 22" deep x 9 h

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PROTECTION CIRCUITRY The KMA-160 has a sophisticated series of circuits that protect it from dangerous input signals or loads on the output. They also analyze various amplifier functions to prevent speaker damage caused if the amp should fail. When the protection circuit is engaged, the amplifier will stop functioning. The on/off switch will remain illuminated and in the on position. Switch it to the off position. After resolving either the input or output problem and leaving the unit off for a

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Once the amplifiers are in place and turned off, connect the speaker and interconnect cables. The preamplifier should be on at this point, with level fully attenuated; all other sources should be off. Connect the AC last. OPERATION When turning on the system, the amplifiers should always be last. The KMA-160 on/off switch is actually a circuit breaker that is involved in several protection circuits. Upon turn-on the amplifiers’ outputs are not connected to the speaker. After the protection circu