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Contents Copyright 2006 Final Sound Solutions.
4. FEATURES OF THE S100 SUBWOOFER
The S100 subwoofer has a wide variety of features, including:
- Dedicated volume control
- Switch able phase control
- Variable low pass crossover (40 Hz to 240 Hz)
- Auto turn-on
- High and low level inputs
- Switch able power supply (110/220V user selectable)
The cabinet of the S100 uses 19 mm thick high-density composite walls. The cabinet is finished in a high gloss
acrylic piano black finish.
The amplifier is a 100W RMS/200W peak class A/B design. It is not a switching/class D amplifier, and as such has a
very low noise floor. It features a large power transformer, oversized power supply capacitors, and a large external
aluminum heat sink to ensure longterm cool operation.
The driver is a very long throw 20 cm diameter driver with a 38 mm diameter voice coil, heavy gauge cast aluminum
basket, 2500-gram motor system with a 1000-gram magnet, epoxy-reinforced paper pulp cone, and progressive
fabric spider. It features a patent-pending XBL
2
TM
motor design with allows for a linear 24 mm of throw, and over
36 mm of peak-to-peak excursion. The linear motor strength curve from this motor ensures extremely low distortion
and compression over the full operating bandwidth, as well as a very high transient response.
4.1 Control Panel
The control panel of the S100 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 40 Hz to 250 Hz. For use with Final Sound electrostatic panels the
crossover is typically set to the lowest frequency the panel can reproduce.
4.2 Connections
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 approxi-
mately 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 3 way binding posts, and are compatible with all consumer amplifiers. The input impedan-
ce 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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