Beamer 7 series7/30/2023 ![]() However, it does make the amplifier retrofit process much easier,as the bracket holding the ASD module comes with all the mounting points for an amp, too. Its purpose is to inject fake engine noises into the cabin through the speakers, so it’s not the most desirable unit in terms of the sound experience. If it happens to be featured in the vehicle, it will be located in the trunk between the head unit and speakers. What they do deliver instead is a rather unimpressive, cardboardishly boomy kind of bass.Īnother piece of equipment that may or may not be present in the Base system is an ASD module. ![]() ![]() Apart from the higher, easier to drive impedance, the Base woofers are “lightweights” both literally and figuratively, as they weigh hardly more than the air they take up and don’t produce much bass at all. For comparison, HiFi cars have 2 Ohm woofers, as the amplifier present in these systems is able to cope with the increased load of lower impedance woofers. What’s more, since the Base woofers can only be powered by the head unit, BMW opted to use 4 Ohm woofers, easier to power by weaker sources like the iDrive system head unit. Towards the end of the volume scale you may start experiencing distortion, so you might want to refrain from going all the way up. This may result in a lack of sufficient volume, and wishing you could turn it up more than your BMW allows you. There is no dedicated amplifier either instead, the head unit itself with 4 audio output channels is responsible for the amplification, further reducing audio quality and maximum audio output. Tweeters are nowhere to be found here (which can be observed by the missing mesh tweeter grilles usually located inboard of the side mirrors or on the a-pillar covers), resulting in music that will sound dull. It’s usually composed of 4 mid-range speakers and 2 underseat woofers. That should be evidence enough that even casual music fans would be best advised to steer clear of this option.Įqualizer settings here are very limited, with the only options available being: In some countries (for example the US and Canada) it’s not available in cars produced after 2012 and is replaced by the HiFi system as the standard option. The Base system, as the name suggests, is the most basic audio option for BMWs. Relevant option codes to look out for are S674A, S676A, S677A, S688A, S6F1A, S6F2A and S752A. See what’s the best audio replacement kit for your vehicle.īut first, if you don't know which BMW sound system you have, decode your VIN and we’ll send you the full vehicle specification list. If you're up for a BMW audio system and speakers upgrade, you’re in the right place. In this guide you’ll find a comparison of the four standard factory BMW sound system options, alongside BimmerTech’s Alpha One speaker and amplifier upgrades. Wondering what the difference is between all the audio options and speakers for BMW? We’ve explained everything you need to know right here.
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