Control Panel; Connections - Final Sound S90 User Manual

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Final Sound S90 Subwoofer User Manual

4.1. Control Panel

The control panel of the S90 is labeled for easy identification and use. The most

commonly adjusted controls are located the top of the amplifier, while the least accessed

connections are located at the bottom.

The volume control allows setting the gain of the built-in amplifier to match your main

speakers. A total range of 60 dB is provided, allowing integration with nearly any audio

system.

Phase can be switched between 0 and 180 degrees. Phase adjustment is critical to get

proper subwoofer/speaker integration.

The crossover frequency has a roll-off range from 60 Hz to 250 Hz. For use with Final

Sound electrostatic panels the crossover is typically set to 170 Hz.

The auto-on switch will place the amplifier in low-power mode until an input signal is

detected on the low or high level inputs. When an input signal is detected the amplifier

will automatically turn on, and will stay on for approximately 10 minutes after the input

signal is removed.

The line level inputs are standard RCA connectors, and are compatible with all consumer

electronics. The amplifier will automatically sum the two input signals together to create

a mono bass signal. In the event an LFE/SUB-OUT signal is fed to the subwoofer, either

line level input may be used.

The high level inputs are regular binding posts, and are compatible with all consumer

amplifiers. The input impedance of the high level inputs is high enough to not draw

significant amounts of power or load down the output of any power amplifier. Small

gauge wire may be used to provide the input signal.

The power connection is a standard IEC connector with a built-in fuse holder. The power

supply cord must be plugged into the connector before the power supply cord is plugged

into the wall socket.

The fuse is contained inside the IEC connector. The small tab inside the connector must

be depressed allowing the fuse holder to be slid out. The power supply cord cannot be

used when the fuse holder is extended or removed.

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