E90 3-series sedan subwoofers
Musicar BMW subwoofers are available for the E90 sedan in various configurations:
- Plug-and-play Add-a-Trunk-Subwoofer kits for Premium Sound systems – plugs into Logic 7, harman/kardon, and Enhanced Premium cars (all you need is hand tools!)
- Add-a-Trunk-Subwoofer kits for HiFi systems (these require four speaker-wire connections – not plug-and-play)
- Preloaded, tested subwoofers (using woofers we’ve validated as performing optimally in our enclosures)
- Unloaded enclosures (this product does not carry the Musicar Performance Guarantee)
E90 Level One Premium Sound Add-a-Trunk-Subwoofer kits
These kits are for Premium Sound-equipped 3-series sedans (Logic 7, harman/kardon, and Enhanced Premium), and include everything you need except hand tools:
- Plug-and-play interface harness
- 250-watt, fan-cooled micro-sized amplifier
- 10″ high-performance subwoofer optimized for small sealed enclosures
- The E90 OE-Look corner-loaded enclosure with acoustic polyfill
- Musicar OE-look grille
- Amplifier power harness and speaker harness with disconnect
This package is $995 installed here at our shop, and $895 not installed. Please contact us for details. Please let us know model year, model, and whether you have Sirius satellite radio, thanks. (NOTE – for M3 Enhanced Premium vehicles, an additional active interface is required – please add $125.)
Please contact us to place an order.
E90 Level One Full-Bass Upgrade kits
Bass isn’t just sub-bass notes – the bass range extends from 300 cycles all the way to 20 cycles per second. BMW’s underseat speakers are responsible for playing all of the “middle bass” too – the notes we hear from acoustic drum kits, bass guitars, and even the male voice. Trunk subs don’t help with mid-bass sound quality. Our Level One Full-Bass upgrade uses a new multichannel amplifier to power both our trunk subwoofer and the upgraded underseat woofers we include. The woofers bolt in and plug in, under the stock factory grilles. We use active crossover filtering to attenuate the lowest sub-bass from the underseat woofers – which they can’t play with authority anyway – but after we filter that sub-bass out of their signal, they can play the middle bass notes more cleanly and more loudly. The amplifier in this package has 300 watts of continuous power to the subwoofer, and 75 watts of continuous power to each of the underseat woofers.
The Level One Full-Bass upgrade is $1650 installed at our shop, and $1395 not installed. (NOTE – For M3 vehicles with Enhanced Premium sound, an additional active interface is needed – please add $125.) Please contact us to place an order.
E90 Level Two and Level Three Full-Bass Upgrade kits
This package uses DSP-enabled amplifiers to optimize the acoustic performance in the cabin, as well as correcting some speaker-specific acoustic processing performed by the Premium Sound system. This processing is intended to compensate for some of the performance weaknesses of the Premium Audio woofers, and that processing isn’t appropriate for our upgraded speakers.
Level Two uses the same speaker drivers as Level One, and similar power output, but with DSP tuning.
Level Three upgrades the underseat speakers and the trunk subwoofer. We use a higher-output, carbon-fiber-cone 10″ woofer with an oversize voice-coil-motor winding and a neodymium-hybrid magnet, and German-made high-performance underseat woofers. This is a favorite of M3 owners, since it improves the Enhanced Premium bass-region quality and quantity.
Please contact us to place an order.
E90 Level Two Full-Bass upgrade package is $2995 installed at our shop, and $2195 not installed. (NOTE: subtract $150 for 325/330/328 vehicles, add $125 for M3 vehicles with Enhanced Premium Sound.) Please contact us to place an order.
E90 Level Three Full-Bass upgrade is $3500 installed at our shop, and $2750 not installed. (Subtract $150 for 325/330/328 vehicles, add $125 for M vehicles with Enhanced Premium Sound). Please contact us to place an order.
E90 Level One HiFi Add-a-Trunk-Subwoofer kits
This package is identical to the above Top HiFi package, but lacks the plug-and-play harness (instead, a pigtail harness is included). The installer will need to connect to the two speaker-wire pairs for the underseat woofers. (NOTE: We recommend that you upgrade the HiFi cabin amp-and-speaker system rather than simply add a subwoofer to the existing HiFi cabin system, due to the low performance of the HiFi system. We do not have Level Two or Level Three subwoofer kits for HiFi systems – the result would be unbalanced performance. Please see our full-system upgrade page for Level Two and Level Three performance).
This package is $995 installed at our shop, and $850 not installed. Please contact us to place an order.
E90 Level One Subwoofer
This is our Level One 10″ subwoofer in our E90 OE-Look enclosure. Rated for 250 watts of continuous power handling, it is a stellar sound-quality performer.
This module is $495 not installed, with OE-Look grille and speaker-wire harness with quick disconnect. Specify 2-ohm or 4-ohm load when ordering (also tell us your amplifier brand and model number). Please contact us to place an order.
E90 Musicar OE-Look unloaded enclosure
$395 unloaded, prewired, for a 10″ standard-frame woofer, without a grille. Please contact us with fitment questions or to place an order.
FAQ
Why just one woofer?
Well, our cars have 8″ midbass under the seat. For good, musical sound, we only need one subwoofer. One subwoofer lets us corner-load, which gets us extra output.
But I want lots of bass!
Then we may not be the solution. We can provide lots of bass, but our target is something more difficult to achieve – accurate, articulate, detailed sub-bass that integrates with the mid-bass from the underseat woofers.
Why do you have a 10″ woofer with the E90 sedan and the E82 coupe, but a 12″ woofer for the E92 coupe?
Well, the E90 sedan was first. We knew that we wouldn’t take away any cargo-floor area, nor would we block any of the trunk opening. With those parameters, the amount of volume available atop the battery cover is limited. We modeled it up and determined that we could use certain small-volume-optimized woofers and the results should be good. We tested, and had better results than we hoped for.
The E92 was next. We measured, and could not find a way to get an above-the-battery-cover enclosure with as much internal volume in the E92 as we did in the E90. We already felt that enclosures with less internal volume than the E90 would have performance limits. We already had some requests for a 12″ from some customers, so we modeled a 12″ enclosure replacing the battery door, rather than sitting atop it. It turned out that we were able to hit the dead center optimal volume for some very high-performance 12″ drivers.
The E82 enclosure was limited by height and by how far we wanted to protrude into the cargo area (as in, not at all). Again, a 10″ driver was optimal for the volume available.
Why do you say your subwoofer is corner-loaded? Aren’t all in-car subwoofers corner-loaded due to the cabin gain?
Yes, technically, they are – but as someone once said, “All in-car subwoofers are corner-loaded at some frequency, but the frequencies change with speaker position”. The response of this design works very, very well at the frequencies we
