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Re: alpine v12 amp no power
Its your fuse box. i would bypass the fuse box and wire this amp directly to the battery via monster cable. make sure you attach a 30wieght fuse to the monster cable that is running from the battery to your amp. ground the amp against the trunk. scrape the paint of a section and drill a hole in the trunk. use this for the ground for you amp. this will fix the no power issue.
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you can wire them to be at 2ohm load you need two of the same speaker. its is very bad on the amp to run like that and you will not get a good bass sound because one will over power the other sound wise
no you don't have to hook up both of the power terminals. but should have it hooked up so you get the proper power to the amp. use a disubution block with two 8 gauge wires.
do you know if the radio's rca jack's are good? have you ever had another amp in the car? if it worked before try new rca's from the radio to amp. recheck all connections from amp to speakers and make sure no wires fell off.
If the M605 fails and displays "CUR", it means that there is excessive current to the amp.
The most common causes for excessive current draw is operating the amp into a lower impedance than it is rated to handle, shorted speaker voice coil(s), and/or shorted or grounded speaker wires.
The amp can operate into a load no lower than 2ohms. First power everything off and disconnect the positive amp power lead temporarily (easist way is to just pull the fuse). At this point you should ONLY have the ground and remote connected. Reconnect positive (insert fuse) and turn on the vehicle ignition and your head unit. If the amp still displays the "CUR" error, the output MOSFET's are probably defective and the amp requires repair or replacement. If it powers up normally, reconnect the speaker wires until you locate the faulty one, and then correct whatever is causing it.
All amplifiers are rated by the manufacturer as to the minimum impedance they can be wired to and still operate effectively (or at all). All amplifiers are different - and there are some not stable at 2 ohms.
In theory - you are changing the amplifiers LOAD - not the amplifiers ability to withstand a lower impedance.
An amplifier that is wired at a 4 ohm load will have approximately HALF the power of the same one wired at a 2 ohm load.
If you post your amplifier make/model I can tell you the spec's. If you're wondering what voicecoil wiring configurations will give you a 2 Ohm load... I can help with that as well - Simply post your make/model of the subwoofers.
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Make sure that your amp turn on wire is connected from behind the radio to your amplifier. Usually the turn on wire is a blue wire but it can be any. This blue wire connects from the blue/white wire behind the radio to your small connection turn on connector on the amps power connections. You have 3 ( 12V , Ground, Switch or the smallest connector)
Also check the amplifiers fuses, and the main powerline fuse as well. If this doesnt work then write back to me.
If you got smoke comming out its already has damage my friend.. Was this unit bench tested before you bought it or was it hooked up in another vehicle and you seen it work or did you buy it sight unheard??