The box was cut to-the-millimetre using 18mm MDF and cost under $40 including 100 x 8G/45mm wood screws and a tube of liquid nails.

With all that in mind, I set to work in Excel and spun up a template where I could tweak values to get the right size (also taking into account the subs are 390mm high) and once I got it close enough to 2cuft - I took the final measurements down to Mitre10 and told them to cut it using their wall-saw (much more accurate than my circular saw abilities ). 2cuft of actual air) - and if you own a Sportswagon you'll know the boot isn't exactly teaming with space, there's only about 330mm from the rear of the back seats to where the inside panels narrow significantly - also there's about 390mm from the floor to where the horizontal 'boot cover' bar comes across immediately behind the top of the back seats, and within that whole area there's about 1220mm of width to play with. Now the manufacturer wants 2cuft NET (Meaning it's 2cuft inside the box, minus the volume the sub takes up as well ie. So with boot space and SQ in mind - I decided to sacrifice some SPL and went for a sealed enclosure firstly because a sealed box is inherently smaller than a ported one and secondly the response curve is a little smoother (but drops off sharper down low).

Boot room (And I don't want to take up the whole boot).SQ (But I should at least make an effort in retaining some SQ).My main aim when installing this system was to balance the following: Dual battery (System will be in the 2,000-3,000W range)Īt the time of this thread's creation, I've built and installed the custom sub box, power wiring for 1 battery and the LOM for testing, but I'll continue to update as the work progresses to the final stage of installation.

Sourced using a Soundstream iCQ4 Line-Out Module (which will convert the existing Holden IQ speaker outputs into line-out RCAs).TL DR - If you have a VE Sportswagon you can find pictures, schematics and box designs here. Hopefully it helps someone along the way. I'll be detailing my system build in my (recently purchased) 2012 SSV Redline Sportswagon.

Soundstream icq 4