JBL S5160 user manual Quiet Cooling, Included, One 1 detachable power cord

Quiet Cooling

The S5160 utilizes a fan to cool the amplifier channels, ensuring long-term reliability. To reduce fan noise to an absolute minimum, a thermal sensing and control circuit that senses increases in temperature within the amplifier and powers a fan at a speed proportional to that tempera- ture increase has been incorporated in the S5160. When the S5160 is used at lower volume levels, the fan turns very slowly – and quietly. At high listening levels (and the higher operating temperatures this creates within any amplifier), the sensing circuitry causes the fan to turn faster, producing increased cooling. As a result, the fan

is never turning faster than necessary, and most of the noise that is generated is masked by the program being listened to.

Comprehensive and Isolated Circuit Protection The S5160 amplifier employs sophisticated protection cir- cuitry (one for each channel) that senses many possible fault conditions, such as shorted loudspeaker wires or excess power demand, and turns the affected channel(s) and their blue front-panel indicators off until the fault condition is removed, at which time normal operation is automatically restored. While protection of this sort is not uncommon in today’s well-designed amplifiers, a remarkable feature of the S5160’s protection circuitry is that it is optically cou- pled to the signal circuit; there is no direct electrical con- nection between the signal path and the protection circuitry.

As a result, there can be no coloration of the music, no interaction between protection and amplification, until certain thresholds are exceeded, at which point the channel(s) turn off completely.

2INTRODUCTION.0 AND FEATURES

2.1 Included

Each S5160 amplifier includes the following items packed in the carton. If any of these items is missing, please con- tact your JBL Synthesis dealer or distributor, or visit our Web site at www.jblsynthesis.com.

One (1) detachable power cord

One (1) 6-foot 5-pin DIN trigger cable (M/M)

Two (2) 5-pin DIN/2-pin bare wire adapters

Two (2) 2-pin bare wire plugs

Owner’s manual

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