Question about Sony Xplod XM-1652Z Car Audio Amplifier
Every time the bass hits it blows a fuse. Could you tell me what the problem is?
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
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