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Focal Inside ISUBBMW4 Replacement 4-Ohm Underseat 8-inch Subwoofers (Each) - Compatible with Select BMW

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Open Box - Focal Inside ISUBBMW4 Replacement 4-Ohm Underseat 8-inch Subwoofers (Each) - Compatible with Select BMW

OUR PRICE:

$724.00 $471.00

Key Features:

- Open Box / Used for Photography
- Never seen amplifier power
- No Returns on Open Box Products
- Dedicated manufacturer BMW Plug & Play connector
- Quick and easy to install with no modifications to the vehicle required
- Can be used with factory stereo system or amplified aftermarket upgrade
- High-fidelity sound and excellent power handling
- 4-Ohm Impedance

Quantity

Subtotal: $471.00

Quantity must be 1 or more

SKU: ISUBBMW4

Description
Fitment

Description

ISUB BMW 4 is a subwoofer that delivers powerful bass thanks to its neodymium engine, a high performing Focal technology. With ISUB BMW 4, the sound is neutral and the install is quick thanks to the spacer integrated in the chassis that allows perfect integration into the original location. With its 4 Ohms impedance, it is ideal with your original amplification.

KEY POINTS:

Quick installation
No wire to cut, no modification
100% compatible with your vehicle
Sound quality superior compared to the original one
Mounting accessories included

Fitment

Works great plug and play

A 2024 f250 XLT premium with the eight speaker BNO system and it worked flawlessly had no tuning required and sounds great

Amazing product

Amazing well built product . Don’t hesitate to buy these and put them in a high end install .

Best product I have bought

It fits perfect. The quality and fit are impressive. Easy to install. One of the best products I’ve ever bought.

Exactly what I was Looking For

I have a 2024 Lariat 502a with B&O Unleashed speakers. The speakers themselves are really good, however it severely lacked in bass compared to other B&O systems I’ve had (2014 5 Series).

As I’ve looked across multiple forums, I found a post that recommended the Kicker KeyLOC from SoundsGoodStereo. I’ve never done any upgrades to car audio, so I gave them a call and they explained how the KeyLOC would work and how it would fix the factory bass roll off. Pulled the trigger on this during their Black Friday sale and recently got it installed with Skar Downward Facing under rear seat subwoofer box with 2 10 inch subwoofers.

All I can say is that it changes the experience immensely. Listening to music is enjoyable and especially if you like listening to music at louder volumes fixing the factory bass roll off is a game changer.

If you are looking to add bass to your truck, this pre-tuned Line Output Converter is the way to go. If you have any questions, give them a call. The person I spoke to on the phone gave some amazing tips as well which helped with the install (Running ground and power to the battery).

Plug and play, add power. Really that simple. I made zero adjustments used an Epic amp from Audiocontrol that has a pigtail used for an epicenter to power this. Perfect pairing

It is a shirt. It's good.

Hopefully it makes my car sound good.

Great part

Harness made my install super simple. Everything was plug and play. Made everything seamless. Top tier

Nice Tool

Great tool that is well made and works great. Makes popping off panels eazy pezy, without braking anything.

Hassle Free Plug and Play Harness 20 Silverado LT Trail Boss W/ Bose

This is a great and easy way to add some BASS to your truck, without having to cut and splice,. Super clean and well made. SG for the WIN again.

Excellent!!!!!

These fit my 2025 Audi q3 perfectly for a 8" midwoofer the factory used on my front doors!!!( These also fit my 2021 a4, b9 platform, but may need mod. if trying to use an 8? Maybe stick with the 6.5" for that model?!) The brackets arrived safely, and very quickly. They were packaged professionally with their ten87 design, vaccum sealed!!! Everything in the picture is included as well. These look, and feel superior to even what the factory can produce. Thank you Sage, and all the crew at Sounds Good for making your products available to out of State consumers. Do not be surprised if I order a back up, and 6.5 set in the near future.:-) thank you, Christian.

Open Box - Focal Inside ISUBBMW4 Replacement 4-Ohm Underseat 8-inch Subwoofers (Each) - Compatible with Select BMW

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Open Box - Focal Inside ISUBBMW4 Replacement 4-Ohm Underseat 8-inch Subwoofers (Each) - Compatible with Select BMW

Customer Reviews

KEY POINTS:

Customer Reviews

Recently Viewed Products

Free Shipping

Financing Available

AUTHORIZED ONLINE RETAILER

IN-HOUSE TECH SUPPORT

Your cart

Let customers speak for us