15
ENGLISH
“My amplifier shuts off once in a while, usually at higher volumes.”
Check
your voltage source and grounding point. The power supply
PGUIF9%XJMMPQFSBUFXJUIDIBSHJOHTZTUFNWPMUBHFT
EPXOUP74IVUEPXOQSPCMFNTBUIJHIFSWPMVNFMFWFMT
can occur when the charging system voltage (or remote
UVSOPOWPMUBHFESPQTCFMPX75IFTFEJQTDBOCFPGWFSZ
short duration making them extremely difficult to detect
XJUIBDPNNPO%$WPMUNFUFS5PFOTVSFQSPQFSWPMUBHF
inspect all wiring and termination points. It may also be
necessary to upgrade the ground wire connecting the battery
to the vehicle’s chassis and the power wire connecting the
BMUFSOBUPSUPUIFCBUUFSZ.BOZWFIJDMFTFNQMPZTNBMM
"8("8(XJSFUPHSPVOEUIFCBUUFSZUPUIFWFIJDMFT
chassis and to connect the alternator to the battery. To prevent
voltage drops, these wires should be upgraded to 4 AWG
when installing amplifier systems with main fuse ratings
BCPWF"(SPVOEJOHQSPCMFNTBSFUIFMFBEJOHDBVTFPG
NJTEJBHOPTFEBNQMJGJFSiGBJMVSFTw
“My amplifier turns on, but there is no output.”
Check
the input signal using an AC voltmeter to measure the
voltage from the source unit while an appropriate test tone is
played through the source unit (disconnect the input cables
from the amplifier prior to this test). The frequency used
should be in the range that is to be amplified by the amplifier
FYBNQMF)[GPSBTVCCBTTBQQMJDBUJPOPSL)[GPSBGVMM
range / high-pass application). A steady, sufficient voltage
CFUXFFOBOEWPMUTTIPVMECFQSFTFOUBUUIFPVUQVUPG
the signal cables.
Check
the output of the amplifier. Using the procedure explained in
the previous check item (after plugging the input cables back
into the amplifier) test for output at the speaker outputs of
the amplifier. Unless you enjoy test tones at high levels, it is
a good idea to remove the speaker wires from the amplifier
while doing this. Turn the volume up approximately half
way. 5V AC or more should be measured at the speaker
outputs. This output level can vary greatly between
amplifiers but it should not be in the millivolt range with
the source unit at half volume. If you are reading sufficient
voltage, check your speaker connections as explained below.
Check
to ensure that the speaker wires are making a good
connection with the metal inside the terminal block. The
speaker wire connectors are designed to accept up to 8 AWG
wire. Make sure to strip the wire to allow for a sufficient
connection with the metal inside the terminal block.
