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<blockquote data-quote="hanyoung" data-source="post: 8100890" data-attributes="member: 654627"><p>Help! My ears are bleeding!</p><p></p><p>I got the car back today from the car audio shop. I went with the JL Audio 360x4 channel amp, 4Ga wiring kit, and Pioneer flat subwoofer. Remember that this is off of my Stock HU (due to Nav, BT, and Rear view camera). The shop explained to me that they would use the speaker outs of the amp, and from what I understand have wires from Ch 1-2 to my front speakers via the stock HU (and therefore not have to go into the front doors and directly wire. I asked, "a loop?" and they said yes. Another option was to use a line out converter (they quoted me $100), but they didn't think it would improve the quality of the sound coming from the HU.</p><p></p><p>Channels 3-4 are bridged to my subwoofer (this they did use direct speaker wire).</p><p></p><p>On the receipt they noted "small alternator whine." What! It is literally making my ears bleed, a very high pitched noise that increases with acceleration and may not be noticeable with the volume cranked but drives me crazy when the stereo is off. I did some research, and followed the amp power line (4Ga through the firewall and to my positive battery terminal), and the ground (short distance, to a drilled hole in exposed sheet metal of the driver kick plate). The speaker wire to the subwoofer also does go along this kick plate. One thing I should mention is that I also have a HID kit that is powered by the positive terminal of the battery. I replaced the ground to a bolt of the sheetmetal on the kick plate, still same problem.</p><p></p><p>When the car is on (but engine off), very minimal background sound. When the engine is on, even if the audio is off, the whine is unbearable. I took it back immediately, and they recommended adding a LOC, and then a filter to block out the sound. My question is:</p><p></p><p>1. Will this eliminate the whine?</p><p></p><p>2. Anything else I should check? I think the car is grounded properly.</p><p></p><p>3. Could my HID power source affect the whine given that the terminals are in contact?</p><p></p><p>4. I've noticed that when I start my engine, the initial engine turn sound and alternator starting are significantly louder.</p><p></p><p>5. Please help, I'm going crazy. Should I just install a LOC? This loop with the speaker out is very confusing to me.</p></blockquote><p></p>
[QUOTE="hanyoung, post: 8100890, member: 654627"] Help! My ears are bleeding! I got the car back today from the car audio shop. I went with the JL Audio 360x4 channel amp, 4Ga wiring kit, and Pioneer flat subwoofer. Remember that this is off of my Stock HU (due to Nav, BT, and Rear view camera). The shop explained to me that they would use the speaker outs of the amp, and from what I understand have wires from Ch 1-2 to my front speakers via the stock HU (and therefore not have to go into the front doors and directly wire. I asked, "a loop?" and they said yes. Another option was to use a line out converter (they quoted me $100), but they didn't think it would improve the quality of the sound coming from the HU. Channels 3-4 are bridged to my subwoofer (this they did use direct speaker wire). On the receipt they noted "small alternator whine." What! It is literally making my ears bleed, a very high pitched noise that increases with acceleration and may not be noticeable with the volume cranked but drives me crazy when the stereo is off. I did some research, and followed the amp power line (4Ga through the firewall and to my positive battery terminal), and the ground (short distance, to a drilled hole in exposed sheet metal of the driver kick plate). The speaker wire to the subwoofer also does go along this kick plate. One thing I should mention is that I also have a HID kit that is powered by the positive terminal of the battery. I replaced the ground to a bolt of the sheetmetal on the kick plate, still same problem. When the car is on (but engine off), very minimal background sound. When the engine is on, even if the audio is off, the whine is unbearable. I took it back immediately, and they recommended adding a LOC, and then a filter to block out the sound. My question is: 1. Will this eliminate the whine? 2. Anything else I should check? I think the car is grounded properly. 3. Could my HID power source affect the whine given that the terminals are in contact? 4. I've noticed that when I start my engine, the initial engine turn sound and alternator starting are significantly louder. 5. Please help, I'm going crazy. Should I just install a LOC? This loop with the speaker out is very confusing to me. [/QUOTE]
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