Question about Sony XM-1902GX Car Audio Amplifier
I was driving along and all of a sudden my subs kicked off. i opened my trunk and found the over current light on. my amp is a sony XM-1902GX xplod 780watts. Did I blow my amp or do i need to replace a fuse or something? please help.
The best thing to do is to get a amp that is more watts than your subs, not the other way around, speakers are known to handel a lil more power but amps cant produce more power than they are capable of... your ground wire should be thick also, say 6 to 8 mm or so, and its best to put in a cap and an equalizer.
Posted on Dec 19, 2007
SOURCE: sony xplod xm-1652z amp
You probably have the output bridged at 2 ohms. This amp is not a 2 ohm bridged stable amp. It is 2 ohm stable only in stereo. That means each channel can be 2 ohms, buts not bridged at 2 ohms.
If you have two 4 ohm speakers that are wired in parallel and then you bridge them, you have a 2 ohm load.
They only safe way to use two 4 ohm speakers is to run one speaker to each channel and then you have a stereo 4 ohm load.
When you use a 2 ohm load you get twice the current draw thru the amplifier as you would with a 4 ohm load. That means that the fuse you are using, the rating the amplifier is designed for, will blow any time you have a big bass hit.
If you are not using a 2 ohm bridged load, and you are using a 4 ohm bridged or something the amplifier is rated for, and you still have this problem, you may have a bad speaker. Even a speaker that will play can sometimes be on the brink of shorting out and causing the amplifier to draw lots more current than it is rated for.
If this is the case, you should go and get your speakers checked and see if they are still measuring at 4 ohms or at least close to it. Most speakers will measure a little lower than what the are rated. It is not unusual for a 4 ohm speaker to measure at 3.5 ohms, but if it is less than that, you problem is the speaker. Even if the speaker still plays.
I hope this was helpful for you, if you require any further help just ask.
If you did find that this was helpful in solving your problem, I would really appreciate a good rating.
Thanks and have a great day,
Posted on Jun 21, 2008
This means the speakers are trying to draw more current from the amp than it's rated for. Generally this means the speaker wires or terminals have been shorted together. Check your wiring to make sure nothing is shorted.
Posted on May 21, 2009
First you will need to post the # of voicecoils each subwoofer has, and their resistance.
Next - you can purchase an amplifier installation kit just about anywhere that will supply you with everything needed to wire up 1 amplifier.
Power wire w/fuse
CLICK HERE for your manual.
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Posted on Jul 24, 2009
You should definately bridge them. Firstly, lay the 2 speakers face down next to each other. Note the connections +- +-. The first + will go to the amplifier. The next terminal(-) will be connected to the next speaker(+). Take the last(-) and connect to amplifier. Please note that your amplifier has a bridge section which is normally the first + and the last- on the two channels. Connect your woofers on the bridge.
Posted on Jun 09, 2010
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