Problem Solving - Genius Audio GKE-120.4D Manual Del Usuario

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PROBLEM SOLVING

This power amplifier has protection characteristics to prevent any damage due to misuse or
defective conditions. If the unit detects excessive heat, short circuit or overload, the Protection
Indicator will turn on and the system will shut down. In order to check the problem, all the gain
levels must be down and verify that there is no wiring error or short, see the following list and
follow the suggested procedures. Always try the speakers and their cables first.
AMPLIFIER DOES NOT TURN ON:
• Check the battery power at the +12 V terminal. Taking measurements from the amplifier termi-
nals.
• Check that the remote terminal has at least 11V remote connection.
• Check a good ground connection. Check all fuses.
PROTECTION OF THE LED AMPLIFIER GROUNDED WHEN IT IS IN ERROR
• Check if there is a short on the speaker cables.
• Disconnect the cables from the speakers and turn on the amplifier. If the protection LED still
lights, then the amplifier is defective. Contact the authorized representative of your region or
country.
BLOWED OR OPENED FUSE
Check that the minimum impedance of the loudspeakers is correct.
Verify that the B + cable is not touching the Auto Chassis if the + cable is touching ground or
car chassis. It is important that the fuse is the one indicated.
OVERHEATING
• Check the speaker impedance if it is the minimum indicated.
• Check that the amplifier gain is not distorted. It is important to adjust the gain because many
times the heating of the amplifier is due to the high level of distortion.
• Check that there is a good flow of air around the amplifier.
SOUND SOUND VERY LOW DISTORTED.
• Check that the input level control is set correctly based on the main unit. A basic test is to have
the radius ¾ of volume, the internal neutral setting and raise the gain of the amplifier until the
distortion is audible. It is a basic methodology but the best is to use a distortion meter or an
oscilloscope.
• Check that the crossover frequencies have been set correctly. These amplifiers were desig-
ned for low frequencies. The crossover setting is very important in the performance of the
amplifier.
HIGH HISS-NOISE MOTOR
• Check good ground and short circuits on the speakers.
• Disconnect all RCA inputs from the amplifier. If the hiss / noise disappears, consult with a
good RCA interconnection. The RCA cable should not travel along with the power cable.
FOR BEST RESULTS IN THE AMPLIFIERS, WE RECOMMEND THE USE OF OUR LINE
OF CABLES AND ACCESSORIES GENIUS CONECTIONS.
GK TECHNOLOGY
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