Kappa Series Powered Subwoofer – Owner’s Manual
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11
Phase Control
The Phase control can be set to 0 degrees or 180 degrees. There is no correct or
incorrect setting. The setting you choose will depend on factors such as room size,
subwoofer placement and listener position. Listen to familiar material with strong bass
content. Switch the phase control back and forth, while listening carefully. Leave it in
the position which provides maximum bass output.
A word of advice
The Low-Frequency Roll-off and Volume controls may be set anywhere within their
rotation. However, it will be a most unusual circumstance if you have to set the Volume
control completely clockwise. This may indicate an unbalanced condition in your
system (too much bass) or an especially large room or that your room placement may
not be correct. Try several other locations before concluding that the Volume control
must be set at maximum.
A word about tone controls
The tone controls on your electronic components (preamplifier, receiver, etc.) should
be used with the utmost discretion. Excessive boost can create severe power
demands on your power amplifier. Maximum bass boost can create a demand for
literally hundreds of watts in the bass region, whereas, in the “flat” position, or with the
tone controls switched out of the system, your average listening level may be
impressively and realistically loud at less than 10 watts. The remaining power capacity
is available for power peaks on sharp transients and powerful crescendos.
Power
The main Power switch should be left in the On position for normal use. For your
convenience, the Kappa Subwoofer includes an auto-sensing circuit that activates the
subwoofer when a signal is detected. When a signal is present, the Power LED will
glow green. After several minutes with no signal present, the subwoofer will
automatically go into Standby. When the subwoofer is in Standby, the Power LED will
glow red.
Replacing the fuse
The Kappa Subwoofer uses a built-in fuse to protect the amplifier. To replace a blown
fuse with a new one, first turn the subwoofer's main power switch Off and disconnect
the AC power cord. Remove the old fuse and replace it with a new one of the exact
same value and rating: 2.5A, slow blow, 250V.
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