bgd73 Posted June 22, 2005 Share Posted June 22, 2005 Does the car radio help to take static away from the engine's electronics? through the speakers? I would like to verify. Link to comment Share on other sites More sharing options...
samo Posted June 22, 2005 Share Posted June 22, 2005 Not true. Not quite sure what you mean by "static" in the engine's electronics, but the radio being on is not going to help anything, I'm afraid. Link to comment Share on other sites More sharing options...
diluded000 Posted June 22, 2005 Share Posted June 22, 2005 I'm not positive, but I guess if you knew the frequency range of the ripple (static?) on the 12v supply, you could design a first order filter to block some of it. There might be some really slight chance that the inductive and capacitive load placed between 12v and ground by the stereo could filter some ripple out, but I really really doubt this could happen. I think the engine static you hear over the speakers is being radiated into the air by the ignition wires, picked up by the antenna, and amplified by the stereo. I really doubt much of it comes from the 12v side, and if it did the mere fact that you can hear it with the stereo on means it is still there, and not filtered out by the stereo. - James Brauer Link to comment Share on other sites More sharing options...
NorthWet Posted June 22, 2005 Share Posted June 22, 2005 The only way that I can see that the radio could have any positive effect is as previously mentioned, the power input filter of the radio *might* take some noise off of the power system. BUT... The radio's filter (if any) was designed to handle the radio's requirements, not the total needs of an automotive power supply. The alternator's ripple, brush noise and VR noise is just too great for any radio's circuitry to tame, especially hung out on the end of its power line. It is possible and feasable to build a filter/power-conditioner for your alternator, but you would proably be better off to first make sure that all of your grounds and power connections are clean, and that your battery and alternator are in good shape. Link to comment Share on other sites More sharing options...
bgd73 Posted June 22, 2005 Author Share Posted June 22, 2005 Thanks for replies. My radio sounds good. The post mentioning finding the hertz freq, is close to what i am referring to. For a few moments after radio install, the idle went wierd going from 500 to 1000 rapidly. I coincidentally listen to bass music..... It had no radio for 3 months, and it was noticable. what is with the common ground for some of the speakers, which will make a normal 4 channel radio run into problems where it would be fixed, with adding more wires? I can't get a normal channel when i go 4 channels.the plugin harness is clearly missing a couple of grounds. Strangely the front speakers only work with the corresponding rear speakers ground, and I can not hook up another channels ground (the rear speakers).All the positives are there, just like a schematic I found. It works with 2 only.All the wires are there doing what subaru did with them.Somewhere in that mess of wires is a merge for some speakers, where is it at? And what is that combining doing? Should i run All new wiring? ty for replies. This site literally helped me keep my favorite subaru out of a junk yard! Link to comment Share on other sites More sharing options...
samo Posted June 22, 2005 Share Posted June 22, 2005 From what I gather, you've got a '93 Loyale, like me. It looks like you checked out my writeup, which really should answer most of these questions. Granted, it's for stereo installation, but check out the sections relating to fixing the common-ground problem. Should point you in the right direction. http://www.ultimatesubaru.org/forum/article.php?a=57 Link to comment Share on other sites More sharing options...
bgd73 Posted June 23, 2005 Author Share Posted June 23, 2005 Thanks again. Rewiring it is then.... I'd still like to know the mystery of common ground that doesnt even come back to radio normally, and still be able to balance, fade individual speakers. Better off with true four channels, upon taking old subaru radio out, the harness on back of radio wasnt exactly the same as the car's. I bet i would have gone through subaru radio #3 (at least)..... I managed to hack in a delco from a 96 corsica....just have to get the "dimmer" wire for the panel lights working.... Link to comment Share on other sites More sharing options...
Phizinza Posted June 23, 2005 Share Posted June 23, 2005 I think the engine static you hear over the speakers is being radiated into the air by the ignition wires, picked up by the antenna, and amplified by the stereo. I really doubt much of it comes from the 12v side, and if it did the mere fact that you can hear it with the stereo on means it is still there, and not filtered out by the stereo. - James Brauer Most of the noise come from the power... Good stereos filter it out. Bad ones need filters, you can get these at electronic and auto stores. What is this "static" suppose to do bad? Link to comment Share on other sites More sharing options...
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