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      05-23-2021, 07:00 PM   #52
530e1991
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Drives: BMW 530e 2018
Join Date: Mar 2021
Location: Norway

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Quote:
Originally Posted by mittu View Post
IM IN THE SAME BOAT

on the HK system does anyone know the underseat subwoofer wiring colours?

Im trying to tap into them from the boot where the amp is.
Would avoid needing to unscrew from seats and sub.

installing a sub and amp in the boot. My car doesnt have folding seats.
Ive read on a few forums that most of the bass wont make its way into the cabin because.

installing sub thats 300-400W RMS. will this be sufficient to compensate sound insulation of my sealed boot?
You need the technicpnp harness (just google it, they have their own website), it has all the configurations you need to get the high level wiring signal without modifying or destroying the integrated system.

I did recently install amp and sub in my 2018 530e with great success and I have somewhat high hifi standards. I have the H/K and was NOT satisfied with the bass that could not follow from 50% volume and up. The sound quality itself is OK.

I used the following parts: amp, trunk subwoofer (2x8 inch) self made specially fitted, line output converter, technicpnp harness and wiring. Everything is documented with pictures. Everything is turned on/off by signalling. Basically everything was plug and play, still have to do the work with installing though.

After successfully installing and adjusting the gain/bass/volume/balance the results were very good. And for the people that says the bass won't make it in to the cabin is generally true but to my big surprise there is just a small difference in having the center open vs closed. You wouldn't believe it. But I think it has with the design I made for the subwoofer box. The two 8 inch is firing right into the back of the back seats. I tried uploading pictures but I think the resolution was too big.

Last edited by 530e1991; 05-25-2021 at 05:35 PM.. Reason: Typo " I have the H/K and was satisfied" -> " I have the H/K and was NOT satisfied"
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