14.Subwoofer FAQ
How can I connect my subwoofer and avoid hum and noise?
Hum and noise in audio systems is caused by many interference sources. Most likely is the existence of a
•100/120Hz hum can be avoided by feeding the equipment using a ‘clean’ AC line. So, don’t connect light dimmers, refrigerators, vacuum cleaners, fluorescent lightning and other current hungry and interference inducing equipment to the same
•Don’t put all kinds of wireless equipment, including cordless cell phones and remote controlled children’s toys in the neighborhood of audio and video gear.
•Use shielded AC power cables to avoid incoming rfi/emc interference. Sources can be radar equipment, transmitters for broadcast or cellular communications or your neighbor’s wireless LAN.
•Mains transformers cause an AC magnetic field around them. If you stack equipment, or if you position gear close together, the magnetic fields can be coupled and hum may result.
•Magnetic fields can also be coupled to cables. So isolate signal cables, AC cables and cables transporting control signals from each other. If there is a need to cross signal cables and power cables, cross with a
•Be sure that all the cables and connectors are in good shape, and that you made the connections according to the dealer’s instructions.
•Mains voltage quality problems can cause hum and noise. Sometimes, the sine wave is distorted and the line will contain harmonics. Please consult your dealer about using isolation transformers, mains filters and AC power stabilizers and conditioners.
•A typical ground loop problem can occur when two interconnected pieces of equipment (FI. cd player and amplifier) are plugged into grounded AC wall outlets at separate locations. The signal ground is connected to earth in each of them. Try to use
•Using the subwoofer’s
•Amplifiers with ‘balanced’ outputs can also be incompatible with the sub’s
•Problems may also occur when you connect the subwoofer, using its
Is it possible to use multiple subs in my stereo or home theatre
Most professionals agree that using two subwoofers in a stereo
FINAL SOUND SOLUTIONS S110 SUBWOOFER MANUAL vs. 1.6 | 24 |
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