Bose F1 Model 812 Passive Benutzerhandbuch - Seite 20
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Care and Maintenance
Problem
Excessive Noise or System
Hum
LED Indicators
The following table describes LED behavior on both the F1 Model 812 Loudspeaker and F1 Subwoofer.
Type
Location
Front LED (Power) Front Grille
SIGNAL/CLIP
INPUT 1/2
POWER/FAULT
Rear panel
LIMIT
Rear panel
Limited Warranty and Registration
Your product is covered by a limited warranty. Visit pro.Bose.com for warranty details.
Register your products online at www.Bose.com/register or call (877) 335-2673. Failure to do so will not affect your
warranty rights.
Accessories
A variety of wall/ceiling brackets, carry bags and covers are available for these products. Contact Bose to place an
order. See the contact information inside the rear cover of this guide.
20 - English
What to do
• When connecting a microphone to the F1 Model 812 Loudspeaker, make sure the INPUT 1,
SIGNAL INPUT switch is set to MIC.
• Check to make sure that all system connections are secure. Lines that are not completely
connected could create noise.
• If using a mixing console, external source or receiving input from the F1 Subwoofer, make sure
the INPUT 1 SIGNAL INPUT switch on the F1 Model 812 Loudspeaker is set to LINE.
• For best results, use balanced (XLR) connections on the system inputs.
• Keep all signal-carrying cables away from AC power cords.
• Light dimmers can cause hum in loudspeaker systems. To avoid this, plug the system into a
circuit that is not controlling lights or dimmer packs.
• Plug the audio system components into power outlets that share a common ground.
• Check cables at mixing console inputs by muting channels. If the hum goes away, replace the
cable at that mixing console channel.
Color
Behavior
Blue
Steady state
Blue
Pulsing
Green (nominal) Flicker/Steady state
Red
Flicker/Steady state
Blue
Steady state
Red
Steady state
Amber
Pulsing/Steady state
Indication
Loudspeaker is on
Limiter is active, amplifier
protection engaged
Input signal present
Input signal too high
Loudspeaker is on
Amplifier thermal shutdown
active
Limiter is active, amplifier
protection engaged
Required Action
None
Reduce volume or
source input level
Adjust to desired level
Reduce volume or
source input level
None
Turn loudspeaker off
Reduce volume or
source input level