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11-20-2022, 02:03 PM | #1 |
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Subwoofer upgrades questions for 128i
Hi everyone, I want to add a subwoofer to my 2011 non i-drive 128i, and haven't found much info on the actual installation process.
I'll break this post into two categories: a) aftermarket subwoofer in trunk: The typical sub install. I lean towards this because I want a speaker around the 500-800 watt rms range, and those are pretty common in the 10-12" size. I don't mind loosing trunk space, I never use it anyways. My questions about this is mainly -- how to tap into the factory headunit for a speaker input? Would it be smart to tap into the existing under seat sub wiring? b) Under seat sub upgrade: This seems to be what I find the most about on this forum, however I don't really see anyone talking about the upgrade process much. I know some companies make plug and play upgrades, but those tend to be pretty pricey. Could I order any 8" shallow mount and drop it in? What about amps? Hopefully this can turn into the guide for anyone looking to do this upgrade. Thanks! |
11-20-2022, 02:38 PM | #2 |
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My HK system already had the reasonably decent 8" under the seats. Amplifying them w/ more power than stock helped a lot by itself. Adding a 10" in the trunk topped it off. I'd consider both if possible.
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11-20-2022, 02:57 PM | #3 | |
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How'd you install the trunk sub? Any videos for install? |
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11-20-2022, 05:21 PM | #4 |
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MusicarNW was the shop that sold everything, I did the install. I think if you search around you'll find more about them.
It's a JL amp installed in the left rear of the trunk. 4 channels, 1 for each 8" and the other 2 bridged for the sub. Power and ground run over near the battery, the rest of the wiring via a custom connector adapter they made. Intercepts the signals to the 8". https://musicarcertified.com/product...ass-level-one/ https://www.1addicts.com/forums/showthread.php?t=790113 |
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