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Car Audio Discussion
General Car Audio
weird noises.. I think I damaged some equipment - tl;dr
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<blockquote data-quote="alfisti" data-source="post: 8333888" data-attributes="member: 594104"><p>Hi community. Something went wrong.. again lol I am so sad and tired. (kinda long post, appreciate your help)</p><p></p><p>97 VW polo (90amp alt, big3 pending)</p><p></p><p>0ga power&amp;ground amp wire, 150a fuse</p><p></p><p>pioneer 6600bt, focal er5 RCA, dls comp (no amp)</p><p></p><p>kicker zx1500.1 - alpine type-r 10" (1000rms) - custom enclosure tuned ~36hz</p><p></p><p><strong>Problems</strong>: A low volume hiss from sub. You have to literally stick your ear to the cone to hear it. A jet turbine like noise, something pitchy like a -digital- high rpm sound. It's tone goes up and down randomly. Engine on or off, RCA's plugged in or not, it doesn't matter.. it is there. If it is harmless to equipments, I don't care. Local shops said this sound is normal from amps.. i don't think so. Plus there is a tiny pop from sub when amp powers up.</p><p></p><p>My main concern is when RCAs are plugged to amp AND engine running, sub makes a little vibration(+little noise mentioned above) Engine off &amp; rcas plugged: only humming. And it seems like sq went to sh*t gradually.. like every note is same. -Maybe this is placebo-</p><p></p><p>When gain setting with a dmm I noticed **** volts fluctuates (ex: 44.5 - 46.7 - 45.2 ...) bought a bad amp? //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif</p><p></p><p>+ and maybe installer damaged my HU rca outputs?</p><p></p><p>some extra info:</p><p></p><p>set gain conservatively with help of dmm &amp; no dimming</p><p></p><p>almost never pushed the system too hard (i hope)</p><p></p><p>50hz 0db test tone, HU %75 max volume used</p><p></p><p>signal - power wires from different sides of vehicle</p><p></p><p>amp ground is good but i will make it better</p><p></p><p>Rca cables: triple shielded, remote wire is pointlessly kinda big lol.. noise from there possible?</p><p></p><p><strong>Bad batt ground &amp; bad HU ground can cause amp to generate noise even when RCAs are unplugged?</strong></p><p></p><p>Thanks a lot!</p></blockquote><p></p>
[QUOTE="alfisti, post: 8333888, member: 594104"] Hi community. Something went wrong.. again lol I am so sad and tired. (kinda long post, appreciate your help) 97 VW polo (90amp alt, big3 pending) 0ga power&ground amp wire, 150a fuse pioneer 6600bt, focal er5 RCA, dls comp (no amp) kicker zx1500.1 - alpine type-r 10" (1000rms) - custom enclosure tuned ~36hz [B]Problems[/B]: A low volume hiss from sub. You have to literally stick your ear to the cone to hear it. A jet turbine like noise, something pitchy like a -digital- high rpm sound. It's tone goes up and down randomly. Engine on or off, RCA's plugged in or not, it doesn't matter.. it is there. If it is harmless to equipments, I don't care. Local shops said this sound is normal from amps.. i don't think so. Plus there is a tiny pop from sub when amp powers up. My main concern is when RCAs are plugged to amp AND engine running, sub makes a little vibration(+little noise mentioned above) Engine off & rcas plugged: only humming. And it seems like sq went to sh*t gradually.. like every note is same. -Maybe this is placebo- When gain setting with a dmm I noticed **** volts fluctuates (ex: 44.5 - 46.7 - 45.2 ...) bought a bad amp? [IMG]//content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif[/IMG] + and maybe installer damaged my HU rca outputs? some extra info: set gain conservatively with help of dmm & no dimming almost never pushed the system too hard (i hope) 50hz 0db test tone, HU %75 max volume used signal - power wires from different sides of vehicle amp ground is good but i will make it better Rca cables: triple shielded, remote wire is pointlessly kinda big lol.. noise from there possible? [B]Bad batt ground & bad HU ground can cause amp to generate noise even when RCAs are unplugged?[/B] Thanks a lot! [/QUOTE]
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weird noises.. I think I damaged some equipment - tl;dr
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