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      01-21-2021, 04:54 AM   #1
timmay77
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Earthquake X84SWS 8 inch woofers direct fit for F30

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Selling my car, putting back to stock.

2014 328i Msport with HK sound.

Replaced my factory under seat subs with these. Significant improvement. You will have to trim some plastic off of the subwoofer mounts for the magnets to fit. They will fit in other models. There is a lot of information about these online. Google......

Only installed for about 8 months. Like new.

Price lowered
$150 shipped.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

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Last edited by timmay77; 02-03-2021 at 04:09 AM..
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      01-23-2021, 09:12 PM   #2
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2 ohm version? Are they still available?
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      01-24-2021, 09:10 AM   #3
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2 ohm version? Are they still available?
4ohm. Still available.
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      01-30-2021, 10:13 AM   #4
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Bump
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      02-03-2021, 04:09 AM   #5
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Bump $150 shipped.
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      04-22-2021, 11:48 PM   #6
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Quote:
Originally Posted by timmay77 View Post
Bump $150 shipped.
do you still have these? iím interested
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      04-23-2021, 07:06 AM   #7
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Quote:
Originally Posted by smokeywokey View Post
Quote:
Originally Posted by timmay77 View Post
Bump $150 shipped.
do you still have these? i’m interested
These are absolutely the best underseat subwoofers replacements. You need the Earthquake SWS-8Xi (2-ohm version) which are about $119 each at Walmart Online, Amazon and ECS.

For a plug and play installation get spacer rings with OEM wiring connectors from technicpnp website. About $65/pair and well worth it.

The Earthquakes sound best with 150 watts each into 2-ohms of power.

With a base BMW stereo, (only available outside the US), the replacement amp to get is a Audiotec Fischer Match 7DSP (you'll also need two AF cables to make it plug and play). It adds a great DSP system to the car.

With a midrange BMW HiFi System, the replacement amplifier to get is the Audiotec Fischer Match 7BMW. It's a complete swap of the stock amplifier and adds better DSP than the HK system.

Both of the Audiotec Fischer Match amplifiers above put a perfect amount of power to the two Earthquake underseat subwoofers.

With the BMW Top Hifi HK system, its best to install a secondary amplifier that just powers the two underseat Earthquake subwoofers. The best one by far is the AudioControl ACM-2.300 combination LOC/Amplifier. It interfaces correctly with the stock HK amp, its small and it puts the perfect amount of power to the Earthquakes. For plug and play, no cutting/splicing get a $50 adapter harness from Technicpnp website.

Hope this helps!
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