BMW 1-Series Forum (F20) 135i - > Second Generation 1 Series Forum > 2012 BMW 1-Series Sporthatch (F20) Discussion > Sub woofer
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      02-03-2024, 03:29 AM   #1

Drives: bmw 1 series f21 120i
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Sub woofer

BMW subwoofer install?
Please can anyone advise/ help me.
I would like to install a small subwoofer in my 2016 F21 120i.
Can anyone advise if this is possible with the standard NBT head unit?
We’ve upgraded the fronts & rears to Harman Kardon already but just need a bit of bass.
Or should I install the Harman Kardon subs under the front seats, again any help/ advise with that would be greatly appreciated.
Is this plug and play?
Many thanks Glen.
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      03-14-2024, 06:19 PM   #2
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Hey there, have you changed the amplifier to the Harman Kardon one or at all?

I have the Harmon Kardon Sound system and it is amazing quality. I have since upgraded the amplifier to the Match Up 7BMW DSP Amp which is fully customisable and also installed a sleek sub in the boot. The car sounds incredible.
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      04-05-2024, 04:44 AM   #3
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Drives: 2014 F20 116i, 2014 F10 530d
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If you get an amp with high level inputs, you can tap into the underseat speaker wiring and use that to send signal to amplifier.

I'd recommend a mini amp as they are easy to hide behind trim panels in the boot. I use a Kicker Key 500.1 and it does the job well, but I'm in a country with limited brands.

I have Focal underseats running off a Kicker Key 200.4 amp and they add a bit of bass but not enough to justify the upgrade cost. Far better to go the subwoofer in the boot.

As a comparison, wifey's car (F10 530d) has the HK system and I find it completely underwhelming.
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