12" Subwoofer Box - Transmission Line Design in BLACKBURN, Victoria for sale

I have for sale a professionally designed subwoofer box to suit a 12" sub.
-Designed by an audio engineer in America this transmission line design performs very well, plays low, flat and loud.
Cost about $360 to design and build originally
-Finished in a blue fo fur (can be easily replaced if not to your taste)
-Heavy Duty Dayton Audio Binding Posts
-Supports subwoofers with single or dual voice coils
-Heavy duty 18mm mdf construction with double baffle (36mm thick)
-T-Nuts for mounting sub, these can be replaced with standard screws if necessary
-Mounting depth of 7"
-Circle Cut Out Diameter of 11.125"
Box Dimensions:
1100mm wide
35mm high
30mm deep
***I have alot of other gear available so check out my other ads.***
***Also see my mates equipment he has for sale:
http://www.Australialisted.com.au/s-ad/balwyn-north/audio-gps-car-alarms/competition-sound-system-2-x-sundown-subs-and-soundquebed-amp/1051372411