5. TROUBLE SHOOTING TIPS
NO SOUND ( NO OUTPUT )
@ Pls check whether speakers are functional. You can connect a AA battery to the speaker
terminals to see if there is any movement of the speaker cone.
PROTECTION
@ Pls check overload, overheat ( thermal ), short and voltage. DC offset
a short cooling period.
If
B2
series amplifiers are functional, then check DC by checking RCA-input L and R
When DC is over 4V at input, try by replacing headunit or source unit
DISTORTION
@ Adjust the input level and check the quality of the speakers. Replace low quality speakers
with upgraded ones.
POOR BASS RESPONSE
@ Pls check speaker cables and reverse the polarity of one channel
BUZZING SOUND
@ Check the amplifier and the head unit ground and ensure it has a good clean connection
@ Check the Rca jack and replace it if faulty or try rerouting it.
WHINING NOISE
@ Engine noise is caused by poor grounding of
B2
series amplifiers, headunit, other
components, battery or alternator, so pls check all grounding connection.
and headunit.
@ Pls check fuses, if it is blown, pls replace with new ones.
@ Pls check all connections, cable's rounting, short
&
voltage on the
M12
@ If the amplifier shuts down due to overheat, it will start up again after
Please allow for better airflow and ensure there's no obstruction around the amplifier for
thermal protection.
@
The
M12
has Low and high voltage protection. Working Voltage is 9V~18V.
Voltage lower than 8.5V or higher than 18V will cause the amplifier to go into protect.
@ When over 4V DC comes into
B2
series amplifiers, then they will be DC protected.
Check whether
B2
series amplifiers work after removing RCA-Input.
6
The
M12
www.b2-audio.com
@ Minimum working impedance is 1 ohm for 2ch mode and 2 ohm for brigded operation.
