M4: M Power with MMMMuch better Music

Doors all open for the sound upgrade

Doors all open for the sound upgrade

Focal 100KRS vs original

Focal 100KRS vs original

Looks great and sounds amazing!

Looks great and sounds amazing!

Hidden amplifiers under the rear shelf. Helix DSP used for time alignment and sound processing.

Hidden amplifiers under the rear shelf. Amplifiers driving all speakers including speakers under the driver and passenger seats. Helix DSP used for time alignment and sound processing.

Great space in the trunk for a subwoofer.

Great space in the trunk for a subwoofer.

Focal Flax subwoofer fits nice and hidden

Focal Flax subwoofer fits nice and hidden

3 Series: Simple BMW Audio Upgrade with a Much Clearer Result

BMW 335 getting an audio upgrade without modifying anything to the vehicle. Focal now makes plug and play speakers for BMW

BMW 335 getting an audio upgrade without modifying anything to the vehicle. Focal now makes plug and play speakers for BMW

Left is the new Focal speaker upgrade with a tweeter built in. (C model) Right is the original speaker.

Left is the new Focal speaker upgrade with a tweeter built in. (C model) Right is the original speaker.

Perfect fit.

Perfect fit. Made in France…Installed in Canada eh!

Separate Focal IS kit sold to replace original tweeters. Adds more clarity and better imaging.

Separate Focal IS kit sold to replace original tweeters. Adds more clarity and better imaging.

Sounds amazing and looks stock.

Sounds amazing and looks stock.

BMW: Ertefa Show Car 2014 Project

ertefa-bmw-max-ultra-auto

A speaker set for music lovers.

A speaker set for music lovers.

Holes being cut to fit new 6' speakers in the doors

Holes being cut to fit new 6′ speakers in the doors

Tweeter mount being made

Tweeter mount being made

Beryllium tweeter installed in the middle of the door.

Beryllium tweeter installed in the middle of the door.

ultra-auto-sound-bmw-e60-au

Two tone panel made for the new 6" drivers. The speaker now sits on a flat surface and does not touch any metal.

Two tone panel made for the new 6″ drivers. The speaker now sits on a flat surface and does not touch any metal.

crossovers visible in trunk layout

crossovers visible in trunk layout

JL Audio 10W6v3 H.O.

JL Audio 10W6v3 H.O.