Boss Audio BV7254 User Manual - Page 3

Safety Precautions

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SAFETY PRECAUTIONS Important Warnings to Take Note of BEFORE Commencing Installation Damage Caused By Incorrect Installation or Usage is NOT Covered By Warranty. PLEASE Take the Time to Read the Installation Notes Carefully. To Validate the Warranty Please Ensure That the Unit is Installed by a Professional, VAT registered Car Audio Installation Company. To avoid short in your vehicles electrical system, be sure to disconnect the battery cable before beginning installation. The unit is intended for vehicles with a 12-volt battery and negative grounding. Before installing the unit in a recreational vehicle, truck, or bus, check that the battery voltage is 12 volts. Remove the two transport screws from the top of the unit before installation. Be sure to connect the negative (-) speaker leads to the negative (-) speaker terminal. Never connect the negative (-) speaker leads to chassis ground. This unit is only designed for use with 4 speakers. Do not combine outputs for use with 2 speakers. Do not ground negative speaker leads to the chassis ground. Speakers connected to this unit must be high-power units with a minimum rating of 45W and impedance of 4 to 8 ohms. Connecting speakers with output and/or impedance values other than those noted there will result in damage to the head unit and the speakers. Check the condition off your speakers carefully - connecting the unit to old of degraded speakers may result in a fault which will damage the audio IC and invalidate the warranty. If this unit is installed in a vehicle that does not have an ACC (accessory) position on the ignition switch, the red lead of the unit should be connected to a terminal coupled with ignition switch ON/OFF operations. If this is not done, the vehicle battery may be drained when you are away from the vehicle for several hours. 

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2
SAFETY PRECAUTIONS
Important
Warnings
to
Take
Note
of
BEFORE
Commencing Installation
Damage Caused By Incorrect Installation or Usage is
NOT Covered By Warranty.
PLEASE Take the Time to Read the Installation Notes
Carefully.
To Validate the Warranty Please Ensure That the Unit is
Installed by a Professional, VAT registered Car Audio
Installation Company.
To avoid short in your vehicles electrical system, be sure to disconnect
the battery cable before beginning installation.
The unit is intended for vehicles with a 12-volt battery and negative grounding.
Before installing the unit in a recreational vehicle, truck, or bus, check that the
battery voltage is 12 volts.
Remove the two transport screws from the top of the unit before instal-
lation.
Be sure to connect the negative (-) speaker leads to the negative (-) speaker
terminal. Never connect the negative (-) speaker leads to chassis ground.
This unit is only designed for use with 4 speakers. Do not combine outputs
for use with 2 speakers. Do not ground negative speaker leads to the chassis
ground.
Speakers connected to this unit must be high-power units with a minimum rat-
ing of 45W and impedance of 4 to 8 ohms. Connecting speakers with output
and/or impedance values other than those noted there will result in damage
to the head unit and the speakers.
Check the condition off your speakers carefully - connecting the unit to
old of degraded speakers may result in a fault which will damage the
audio IC and invalidate the warranty.
If this unit is installed in a vehicle that does not have an ACC (accessory)
position on the ignition switch, the red lead of the unit should be connected to
a terminal coupled with ignition switch ON/OFF operations. If this is not done,
the vehicle battery may be drained when you are away from the vehicle for
several hours.