Thread: The quest for no noise

Sorry about the delay since the last post guys. Been busy trying to take care of a dim LCD and fuzzy TV tuner card.

First, to Tekati, I am not trying to start a fight here, but using a device so that you don't have to install something "the right way" is a bad practice. I understand that some people can get away with doing that, but not all can and in general it is a bad pratice. I use an APC back up ups to power my carputer. It is with out a fan. I am still unsure of the generation of the hum. I have since taken the carputer out of my truck(broken LCD at the moment. Carputer wasn't properly install yet, so I removed it for now). I know that I will eb able to get rid of the noise somehow.

This is to Dima. I am using crossovers. They are passive. I think they are 18db also. I could not tell if the sound was coming from all the speakers or just the tweeters. They have the highest level played through them right now. Most of my other speakers are attenuated to some degree. They are also closer to ear level and aimed toward my ears.

Blkdragon6, I am very glad that you got rid of the noise in your system. I am going to probably do the same thing to my setup. I will go through my installion first and make sure everything is up to spec there first. I think my battery ground needs to be addressed. I need to purchase a pair of those good battery terminators for my system. Truck sometimes didn't want to start till i twisted the clamp on the post a bit. I have since fixed that and the truck starts fine, but sometimes, I think that I can hear a slight whine in the cd player. This is of course after I replaced the 10 gauge wire in my system with 4 gauge. I grounded to a different point and think I may have issues there. I have a few places that I can check out.

When I find my solution to the inverter noise I will definenatly share with everyone else.

blkdragon6: Just because your car is new doesnt mean a thing about whether your alternator might be going out. I'm not saying it is or isnt or anything...but after working a truck chassis plant for a couple weeks...well just trust me things go on you wouldnt want to know about....

I can vouce for that. My wife has a 2000 Mustang and we bought it in May. Was a special order so I know that it was built with in a month of may. Her fan motor is making a really annoying squeal the higher the ac/heater is going. But with a custom setup like you are doing, you might want to not let them see what you are trying do with your new car, or they might void your warrenty. They suck!

Originally posted by Rifken:

When I find my solution to the inverter noise I will definenatly share with everyone else.

Have you tried running and extra gound wire from whatever your inverter is running to the chassis. (i.e.- connect a ground wire from a grounding point on the computer, to a suitable grounding location on the chassis)

Well I guess my excitment was premature. I was washing and waxing and put on the player and have a loud hum. Strange thing is that if the engine is running there is no noise??? Anyone have a clue how that is. I am running an inverter but why would you have noise without the engine running and none with it on. It used to be the reverse before running the ground to the battery????