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The BMW Range
5 Series
E39
e39 ICE
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<blockquote data-quote="willy5" data-source="post: 186680" data-attributes="member: 2319"><p>Just to share some personal experience on subs and the e39,</p><p> </p><p>Free air installation not recommended - no matter how soild the panels are on the e39 on higher volumes there is too much vibration and rattling. The sound quality changes too much as well depending on what you have in the boot e.g. soft bags, hard case luggage, golf bags, you can't be tuning the sub everytime you put something in the boot.</p><p> </p><p>Bazooka bass tube + hole on the rear parcel shelf - if you don't make any openings in the rear parcel shelf, the bass and the rest of the music will seem somehow mismatched (timing and response) and insufficient in power delivery (remember it's only an 8"). The noise isolation of the e39 is very good and you just simply lose too much bass and I could not get the cross over frequency right as too much was being filtered off. If you are not bass crazy then this would do well.</p><p> </p><p>Sub in a box and opening the hole in the rear parcel shelf, by far I found this to be the best set up (the price between the bazooka and this set up was negligibly more in cost, I ended up with Alpine sub and amp). You do loose some boot space but if need to you can remove the sub box.</p><p> </p><p>The rear parcel shelf has 2 holes prepared, ready to be punched out (this was for the factory installed subs) so you are not really cutting the shelf and weaking the structure. You don't have to make any holes in the rear parcel shelf cover as it has vents so you don't see any changes from the inside of the car.</p><p> </p><p>Another note, is that you might want get the signals to the sub amp from the rear speakers, this way you can control the volume of the sub from the head unit by adjusting the front and rear fader, otherwise you would be running to the boot to adjust the amp frequently unless you listen to the same CD all the time or need to run another set set of wires and install a potentiometer near the driver to control the volume of the sub.</p></blockquote><p></p>
[QUOTE="willy5, post: 186680, member: 2319"] Just to share some personal experience on subs and the e39, Free air installation not recommended - no matter how soild the panels are on the e39 on higher volumes there is too much vibration and rattling. The sound quality changes too much as well depending on what you have in the boot e.g. soft bags, hard case luggage, golf bags, you can't be tuning the sub everytime you put something in the boot. Bazooka bass tube + hole on the rear parcel shelf - if you don't make any openings in the rear parcel shelf, the bass and the rest of the music will seem somehow mismatched (timing and response) and insufficient in power delivery (remember it's only an 8"). The noise isolation of the e39 is very good and you just simply lose too much bass and I could not get the cross over frequency right as too much was being filtered off. If you are not bass crazy then this would do well. Sub in a box and opening the hole in the rear parcel shelf, by far I found this to be the best set up (the price between the bazooka and this set up was negligibly more in cost, I ended up with Alpine sub and amp). You do loose some boot space but if need to you can remove the sub box. The rear parcel shelf has 2 holes prepared, ready to be punched out (this was for the factory installed subs) so you are not really cutting the shelf and weaking the structure. You don't have to make any holes in the rear parcel shelf cover as it has vents so you don't see any changes from the inside of the car. Another note, is that you might want get the signals to the sub amp from the rear speakers, this way you can control the volume of the sub from the head unit by adjusting the front and rear fader, otherwise you would be running to the boot to adjust the amp frequently unless you listen to the same CD all the time or need to run another set set of wires and install a potentiometer near the driver to control the volume of the sub. [/QUOTE]
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