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<blockquote data-quote="datguy_dev" data-source="post: 8701645" data-attributes="member: 679349">Greetings,&nbsp; &nbsp; &nbsp; I have a 1999&#039; Ford Escort ZX2 with an aftermarket sound system. (Listed below) I went from a standard head unit to a wired tablet. Then I tried bluetooth from the tablet trying to get rid of the clutter. I don&#039;t need the tablet. But whenever I try to use bluetooth for the audio input, there is a constant &quot;hiss&quot; or noise sound that loudly plays over the speakers. (<a href="https://youtu.be/pEm9vhE0_rA" target="_blank">Example of the hiss</a>) If I use an AUX cable, 3.5mm to RCA, there is no such sound. There is no engine whine or surging. Just a constant &quot;shhhhhhhhhhhhhhhh!&quot; At first, I called the sound &quot;noise.&quot; So I&#039;ve tried all the usual suggestions for reducing noise like ground loop isolators, cleaning all the grounds and the &quot;big three.&quot; But they have had no effect, which is quite the bummer... I even tried stacking ground loop isolators! I have tried three bluetooth audio module/boards as of now with the same results. It kind of feels like the front amp is outputting like 200% volume. It doesn&#039;t play like 200%, but if you would turn up a home stereo&#039;s volume like that. It tends to have that sort of hiss.&nbsp; &nbsp;&nbsp; The only thing I can&#039;t think to do at this point is to replace the speaker amplifier? I can&#039;t finely adjust the gain on it. It only has two position switch. If you have any other ideas or suggestions I am all ears? Thanks!Speaker Amp: Clarion xc1410Speakers: Component set. Crossovers and Tweeters are Soundstream. Front speakers are not Soundstream. I forget as it has been awhile. Kenwood KFC-C680 in the rear.Sub Amp: Alpine MRV-M500Sub: Alpine S-W10D2 10&quot; (I believe)[ATTACH=full]21206[/ATTACH]</blockquote>

[QUOTE="datguy_dev, post: 8701645, member: 679349"] Greetings, I have a 1999' Ford Escort ZX2 with an aftermarket sound system. (Listed below) I went from a standard head unit to a wired tablet. Then I tried bluetooth from the tablet trying to get rid of the clutter. I don't need the tablet. But whenever I try to use bluetooth for the audio input, there is a constant "hiss" or noise sound that loudly plays over the speakers. ([URL='https://youtu.be/pEm9vhE0_rA'][B]Example of the hiss[/B][/URL]) If I use an AUX cable, 3.5mm to RCA, there is no such sound. There is no engine whine or surging. Just a constant "shhhhhhhhhhhhhhhh!" At first, I called the sound "noise." So I've tried all the usual suggestions for reducing noise like ground loop isolators, cleaning all the grounds and the "big three." But they have had no effect, which is quite the bummer... I even tried stacking ground loop isolators! I have tried three bluetooth audio module/boards as of now with the same results. It kind of feels like the front amp is outputting like 200% volume. It doesn't play like 200%, but if you would turn up a home stereo's volume like that. It tends to have that sort of hiss. The only thing I can't think to do at this point is to replace the speaker amplifier? I can't finely adjust the gain on it. It only has two position switch. If you have any other ideas or suggestions I am all ears? Thanks! Speaker Amp: Clarion xc1410 Speakers: Component set. Crossovers and Tweeters are Soundstream. Front speakers are not Soundstream. I forget as it has been awhile. Kenwood KFC-C680 in the rear. Sub Amp: Alpine MRV-M500 Sub: Alpine S-W10D2 10" (I believe) [ATTACH type="full" alt="21206"]21206[/ATTACH] [/QUOTE]

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