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Browsing for All BMW's Choose Your BMW Unfortunately, Your BMW is NOT the Ultimate Sound Machine...One of the first things most BMW owners notice about their vehicles is the poor performance of the BMW audio system. There is no clear definition at any volume level. The high frequency range is muffled and distant and midrange is harsh. To address these problems, BSW developed the Stage 1 Audio Upgrade: The Stage 1 Audio Upgrade delivers striking clarity and definition, more musical detail and life, and improved bass dynamics simply and affordably.When we designed our Stage 1 Audio Upgrade, we made sure the system met several key requirements and features:
How and Why the Stage 1 Audio Upgrade WorksThe BSW Stage 1 Audio Upgrade was designed for you if you want to enhance and improve your BMW's sound system simply, effectively, and affordably - all through the simple replacement of your factory speakers with BSW's meticulously engineered, vehicle specific speakers. By carefully designing not only the highest quality speakers, but also very efficient speakers, we replace the weakest link in your vehicle's audio system, the speakers, without necessitating amplifier or head unit replacement. As a result, you get the biggest possible improvement in your BMW's audio system for the least amount of money, time, and effort.
BMW 6 series E63/E64 '04-'11 (Coupe)
BMW M Series M6 '04-'11 (Coupe) Part 1/2: X3 Stage I Speaker Upgrade Kit - Installation VideoPart 2/2: X3 Stage I Speaker Upgrade Kit - Installation Videoabsolutely everything you need is included!The BSW Stage 1 Audio Upgrade is a 100% complete kit and replaces every* speaker in your BMW! All you need is basic tools! (See "Install Info")
*Excludes subwoofer pair under front seats.
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