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Low Voltage Trigger Question
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09-01-2008, 07:11 PM | #1 |
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Low Voltage Trigger Question
Can someone please explain to me the reason for using a low voltage trigger with an amp install? I've never used one of these in the past and just curious why so many are using it on our cars. I'm not sure of how it helps. Thanks
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08' E92 328i coupe
07' Audi A4 Quattro S-Line 04' BMW 325Ci |
09-01-2008, 11:34 PM | #2 |
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I used a low voltage trigger because there is no 12v remote power wire on the factory amplifier. Some people have used the cigarette lighter as the remote wire connection, but the cigarette lighter only powers up when the car is running. The low voltage trigger can use a speaker signal to switch it on, so my subwoofer amp turns on when my stereo is on. There are probably some good ignition switched remote power wire sources at the front of the car, but I wanted to limit the install to the trunk area, so a low voltage trigger was the best solution for me. Let me know if you still need more explanation.
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2008 Monaco Blue E90 335i 6MT.
Mods: 19" ITC Euro SD's, E46 ZHP shift knob, Matte black grills, Black Lines, 12" Infinity sub. |
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09-02-2008, 04:32 PM | #3 | |
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Quote:
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08' E92 328i coupe
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09-02-2008, 05:16 PM | #4 |
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The power wire on the factory amp is always live, so your sub amp would stay on at all times. The factory amp remote power wire is only ~5v, so it will not turn your sub amp on. I only wanted to limit the entire install to the trunk area. You could find a good source somewhere else in the car, but I just didn't feel like taking my interior apart to hunt for it.
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2008 Monaco Blue E90 335i 6MT.
Mods: 19" ITC Euro SD's, E46 ZHP shift knob, Matte black grills, Black Lines, 12" Infinity sub. |
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09-02-2008, 05:19 PM | #5 |
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You would need a relay to use that OEM remote wire as a full 12V trigger for aftermarket components, as it is not rated at 12V as cassey stated.
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