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Message: <blockquote data-quote="Vanquish" data-source="post: 597" data-attributes="member: 84"><p>Quote -Recently upgrade my ICE set-up, using Alpine HU, Steg 2 channel amp and Focal comp (for the front), got a 4 inch alpine replacing the rear original speaker (run by the HU amp). Currently lack bass and I was told (I know) that I need a sub very fast. I don't like enclosure sub as it will eat up the boot space of the already small E36 boot. Thinking of free air.  Yoke,We do not have an ICE related zone but most of the ICE threads can be found in this sub-section. Now ... to answer your question -Yes - if you wanna hit the low notes, a sub is absolutely necessary. There are a a few way to do this ... some options1. A small 10 inch sub ... in a sealed 1.0 cft enclosure. Will take up some space but you will appreciate the low notes and bass extension.2. 2 x 8 or 10 inch units - free air install. Some mods to the rear parcel shelf will be needed. The stock rear speakers will go and the open cavity can be used to channel the bass into the cabin. A dedicated sub amp is a must.3. Bass tubes - saves space and still provides reasonable amount of bass. Some are self powered (active subs) while the others will need external amp. Please avoid the el cheapo China / Taiwan made tubes as they do not last long and sound boomy at times.I assume your Steg is being used to power the Focals rite ? Which model is it - QMs or AQs ? You will need a separate 2 channel amp for your sub later depending on what you pick. Brands are more of a personal choice ... and also budget dependent.Cheers.</p></blockquote><p></p>

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