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Want to add more life and energy to your music WITHOUT
giving up your trunk? Add a BSW subwoofer system!
Designed as a 100% complete, easy to install
BMW subwoofer upgrade kit, our ib108 BMW E36 Subwoofer System
provides a simple, easy way to add a subwoofer (or replace your existing
subwoofer) and dramatically enhance the impact, liveliness, and energy
of your audio system without having to change any other components
in your BMW -- because our ib108 subwoofer system is engineered specifically
for your exact BMW.
ib108 delivers stealth design, absolutely no loss of trunk space,
incredible output, and unparalleled accuracy |
 | 100%
Stealth
Hidden from view to keep your BMW safe -- but when exposed,
its handsome design and finish insure a cohesive aesthetic. |
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 | No
Space Sacrifice
Provides revolutionary performance without bulky equipment overtaking
any of the already limited trunk space. |
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 | Tight,
Articulate Bass
Rigid aluminum cone 8" subwoofer virtually eliminates distortion,
yielding accuracy, realism, and musical reproduction that is unprecedented
from a free air subwoofer system. |
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 | Astonishing,
Authoritative Output
Combines extremely efficient subwoofer design with stout amplification.
Result: a deep, astounding bass foundation that extends effortlessly
to frequencies most subs never reach. |
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 | True
Fidelity
State of the art amplification and signal chain insures totally
transparent link from source unit to subwoofer for unmatched purity,
precision, clarity, and openness. |
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 | No
Rattles
Utilization of pre-existing mounting holes and specific bracket
design for a direct subwoofer to chassis mount eliminates all chance
of rattles. |
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 | Extremely
Low Weight
Sub-25lb. weight for entire system. You won't notice it's
there. |
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 | Do-It-Yourself
Installation
Includes step-by-step instructions with photos. Requires
only 7 wire connections. An afternoon with your BMW and basic tools
is all you'll need. |
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 | 100%
Complete System
Includes absolutely everything you need: amp, subwoofer,
installation hardware, wiring. Just buy and install. |
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 | Performance
Guaranteed
Unconditionally guaranteed to exceed all your expectations or your money back. You get 30
days to try our products, and if you're not totally happy, send
them back for a refund. |
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the how and why of bass in your BMW
Fully 1/3rd of all recorded music is below 80Hz (this is called bass!) Almost
no interior component speaker can reproduce sound below 80Hz without
high levels of distortion (some CAN reach to around 60Hz, but that's really
the lower limit). The cheap paper drivers BMW uses in their audio systems are
certainly no exception to this rule.
Why? High output bass production requires that a speaker physically
moves a great deal of air relative to what's required for higher frequencies.
This air movement is accomplished in either or both of the following two ways:
- High Excursion: Excursion refers to how far a speaker can
move in or out from its resting state. The smaller the speaker, the larger
the amount of excursion required to produce bass output -- and vice versa.
However, a small driver with high excursion is far less efficient than a larger
driver with lower excursion (require TONS of power from the amplifier) and
is very impractical in a car audio situation due to the space required in
front of such a driver to accomodate the movement. (It's also difficult to
design a very high excursion driver that remains accurate at the limits of
its movement).
- Large Cone Surface: As the cone surface area of a speaker
increases, the more air the driver can move -- and the more efficient a driver
becomes relative to a speaker with smaller cone surface area. However, the
additional mass of such a driver requires more power and a more stout motor
structure (the components that control the speakers) to keep the driver controlled
and accurate.
Both solutions do require substantial power output from the amplifier
driving them, but power can be expensive. For cost savings reasons,
manufacturers will produce a larger coned driver out of lightweight material
(i.e. paper) to minimize power requirements. Unfortunately, the resulting lightweight
subwoofer is flimsy, and when combined with low power yields muddy, fuzzy bass
at moderate volumes and distortion at high volumes. This is PRECISELY the case
in BMW's Harman Kardon systems.
And if you don't have Harman Kardon, because your stock amp and speakers (and
even high quality component speakers and an aftermarket amp) are small in size,
share the same lightweight construction, and are low in power, you'll get the
same fuzzy bass, just less of it.
And so, an effective, high power subwoofer solution is needed. But
with the BSW ib108, it doesn't have to come with sacrifices.
BMW 3 Series E36 '92-'99 (Convertible)
BMW M Series M3 E36 '95-'99 (Convertible)
Installation Instructions
Simply click the link(s) below to download installation instructions. Instructions
are in PDF format. To view them, you'll need to download Adobe's Acrobat Reader
(available at www.adobe.com)
if it isn't already installed on your computer. Estimated Install Time: 3 Hour(s)
 | 5,049 Kb This guide walks you step by step through the installation process of the BSW ib108 Subwoofer System for 93-99 BMW 3 Series, M3 Convertibles.
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