A lot of these amps don't have synchronized oscillators (power supply and output) and will cause noise to be generated but it generally has a changing pitch.
Does the amp have any engine noise when installed in the vehicle?
Does the amp have any engine noise when installed in the vehicle?
Well the sound is not a straight frequency tone. There is a very little variation in tone if you put your ear in the speaker. If you walk away you don't realize it. I can try to make a video/sound clip of it as I turn it off and turn it on if my mic can pic it up.
But I am a little curious why it's making the noise because before the amp blew, it never made that type of noise when I used the same testing equipment.
I will install in the car right now and see what happens. For testing, I was using a battery that was sitting around playing low power with battery at 11.9 volts
But I am a little curious why it's making the noise because before the amp blew, it never made that type of noise when I used the same testing equipment.
I will install in the car right now and see what happens. For testing, I was using a battery that was sitting around playing low power with battery at 11.9 volts
I just finished hooking it up in my car and the sound wasn't there at all and I pushed the amp hard and did not go into protect! Weird how my test bench produced a sound. I will throw it in my other vehicle and confirm. Thank you so much Perry! I will come back if something goes wrong.
So I had thought that I fixed my amp but a week ago I went ahead and installed it for the first time since the repair and it plays but goes into protect regardless low/medium/high volumes. I haven't opened the amp yet but I was wondering if you think my driver board has bad transistors like you mentioned in the earlier posts?
I opened the amp and all fets on the sides are good. I hooked it up on my test bench with my two 8 inch subwoofers at 4 ohms using RCA to 3.5mm audio jack. I was pplaying the amp as loud as my subs can take it which I clamped out about 300 watts going to the subs.
Weird thing is that I am playing it moderately for long periods of time and it never went into protect. But when I play it in my car it goes into protect at low moderate levels...Does it have to do with the Driver board and/or the fact that my head unit is giving the amp 4 volts preout? Please let me know.
Weird thing is that I am playing it moderately for long periods of time and it never went into protect. But when I play it in my car it goes into protect at low moderate levels...Does it have to do with the Driver board and/or the fact that my head unit is giving the amp 4 volts preout? Please let me know.
If the test conditions are not precisely the same as they are in the car, you may not be able to troubleshoot the fault.
Very valid point. When I get the time, I will open my box and wire up one of my subs to test at 4 ohms along with the signal input having a preamp voltage and test it without preamp voltage. I'll report back after I did some tests.
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