Parasound ZoneMaster 2350, Руководство пользователя

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Parasound ® ZoneMaster
™
2350 Owner’s Manual Page 16
Subwoofers:
Number of
subwoofers Impedance of subs Load per amp channel Power to each sub
1 8 Ω 8 Ω 350 Watts
1 4 Ω 4 Ω 600 Watts
2 8 Ω 8 Ω 350 Watts
2 4 Ω 4 Ω 600 Watts
4 8 Ω 4 Ω 300 Watts
4 4 Ω 2 Ω Not recommended
All power ratings are RMS, 20-20 kHz, both channels driven
Reducing Hum or Buzz Heard in the Speakers
- Cable TV is the most common source of hum or buzzing background noise in a system. If you have a
cable TV box connected to your audio system temporarily remove the incoming cable from the Cable TV
box. If the hum goes away the problem is with the cable TV ground. You will need a cable TV Ground
Loop Isolator which is an inexpensive device that attaches between your incoming cable and the Cable
TV box.
- Ground loops are also a common cause of hum and buzzing noise. Finding a ground loop requires a
patient process of elimination. Unplug your source components one at a time. When the hum goes away
you’ve identified the source of the ground loop. You might be able to stop the hum by attaching a wire
from the chassis of the offending component to the chassis or ground screw of your preamplifier.
- Light dimmers can cause noise in your audio. Try turning lights that are controlled by dimmers all the way
off. If the hum goes away the problem is electrical noise the dimmers introduce into your home’s AC power.