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Re: alpine system in car has no sound
Your amplifier has no power because it has no supply, it is maybe because there is an open circuit in your wiring. The voltage from your battery does not produce current in your amplifier because it is not connected. In other words, Somewhere in the circuit in your car amplifier is open or not connected. Obviously from the amp and speaker has no connection and the fuses are ok. Friend the problem maybe is in these, try the following:
a) the switch in you amplifier might be in trouble. Try to see the switch if it can perfrom the desired operation, in other words, do the contact point is ok?
b) if the contact point of the switch is ok, then try to see the connection from your amplifier to the battery.
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HI, Disconnect the speakers fist. then check the amplifier light flashing or not. If not then then any of the speaker is faulty. If the amplifier's Light flashing even after removing the speakers then any one of the amplifier stage inside the amp is faulty. By blinking it shows that its in protection mode.
Normally the out put transistor can become faulty. Which can lead to the amplifier to protection mode to avoid damages to the speakers connected to it.
If its not speakers then you should consult the Alpine service centre or any professional technician. Because repairing such type of amplifier should done by a very qualified person. If not it will lead major defects which will make the amplifier scrap. Ajin
Check your speakers and speaker wires to make sure you have no shorts or grounds. Not knowing what vehicle you are putting the amp in, there is also a possibility that there may be a stock amp in the vehicle. If this is the case, you may have to rewire the speakers and bypass the stock amp.
There is a number of things that can cause no sound from the amp.
Check to make sure your RCA's are plugged in to the amp. Make sure the ground and remote are not touching on the amp. This will cause your head unit to gray out in some areas. Verify, your subwoofers are in working order. Test another pair of speakers on your amp to make sure. If those speakers work, your subwoofers are fried or have come unhooked inside your subwoofer enclosure. Make sure you have not set the head unit to Surround Sound if you have a DVD player in your vehicle. This should be set as passive. Make sure your gains aren't turned down on the amp. MAKE SURE YOU DIDN'T BLOW A FUSE UNDER THE HOOD. Even if there is a light on the top of the amp, the fuse might have blown. Make sure a fuse on the amp didn't blow. This will in some cases cause the amp to go into protect and no bass.
hello their, frist of all is the amp in the truck
running any woofers?
1. the alpine radio how old is it 2005-2009 ?
shuld have plenty of power
to pay the facory speakers and even up grades to a certain level.
try finding what that amp is playing ..
know if that amp palysyour system just needs to re-just!!
This is a sign the you have poor voltage regulation. Which may mean that you are taxing the electrical system of your vehicle. I would suggest you adding a secondary electrical supply for you audio system. This can be done by adding an extra alternator and voltage regulator and battery supply. This will allow you to drive your audio system without having it (power supply) split between the vehicle and the audio system. The fact is your system is drawing to much current for the unit and your vehicle. You are blowing the 20-amp fuses which means the the amp is creating a currnet draw which is past the rated value of the fuses, which if done too many times could damage the power amp components in the unit. I would also check the ohmage reating on the speakers connect to the unit since you may have the wrong impedance which may also cause excessive current draw and actuate some sort of overcurrent protection.