Question about Lanzar VIBE266 Car Audio Amplifier
I have one 12 inch sub in my car and recently have been having some problems with the amp. If the RCA wires are not connected to the cd player the amp stays on and no problem. But as soon as the RCA is connected to the cd player the amp is constantly turning on and off when i turn the volume up but when the volume is very low the amp stays on even with the RCA connected. I am positive it is not the RCA wires because i tried using another pair of RCA wires and it still didnt work.
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Posted on Jan 02, 2017
This sounds like a problem with the power input to the amplifier; it's possible, but unlikely, that your CD player is causing it. Before you can do any real troubleshooting, you need a voltmeter. When your CD player is turned on, you should get a voltmeter reading of around 12 volts at the amplifier's remote terminal and B+ (power) terminal. If your main power wire doesn't show voltage, check for a loose or corroded connection at the battery or fuseholder, and try replacing the fuse (even if it looks okay). If there's no voltage on the remote wire, it may be pinched or shorted between the CD player and the amplifier, or the CD player may be faulty. If you get a good voltage reading on both wires, but the amp won't turn on, then you have a problem in the amplifier.
Posted on Mar 07, 2007
SOURCE: Protection Light irritation
If the amplifier goes into protect when there are no speaker wires connected to the amp, the amp is likely defective. The most likely culprit is shorted output transistors. If it's new, return it to the place of purchase for repair/replacement.
Posted on Jan 11, 2008
In all reality, that amp is probably a bit small for those two subs. To maximize the power from the amp to the subs, make sure:
Keep in mind, though, that depending on the music type and location in the vehicle, the type and size of the sub box is going to make almost as much difference as how much power is on the subs. Sealed boxes are usually small and have a nice flat response, but tend to need more power to sound louder. Ported and bandpass boxes are larger and aren't as flat of a response, but have nice loud peak at a certain frequency.
Let me know if you need any more help!
Posted on Mar 24, 2008
It sounds like it may be oscillating. This can be caused by a broken ground in the signal line. You need to check the RCA shield on the head unit.You'll need an ohm meter. The following page has more details. If the head unit isn't damaged, the shield ground could be open in the amplifier.
Temporary Shield Repair
Posted on Apr 05, 2008
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