Originally Posted by warpdrive
project was curtailed due to skyrocketing cost of neo magnets
I have a question regarding this for those who may have some experience with building subs, particularly in regards to costs and weight. I recognize that a Neo magnet 16" driver would weigh a bunch less, making it more feasible for shipping.
But what about changing the box materials from 1" MDF with a 1.5" to 2" face to a 3/4" Baltic birch with a 1" Baltic birch face. Just doing a quick back of the envelope calculation, it almost looks like the weight difference is a wash. Comparing the TC Sounds LMS5400 18" driver (86.2 pounds) to the TC Sounds 5100 Neo 18" driver (53.4 pounds) there is a difference of ~38% or 32.8 lbs.
Baltic birch is approximately 70 lb's for a 48*96 sheet, and MDF is at least 96 lb's per sheet (based off of a quick internet search, but I'm sure their is a more complex variance between the two based off of material quality, brand, etc). So BB weighs ~ 73% of MDF, is less toxic, and is thinner (giving a tiny edge up in interior volume for the same exterior dimensions).
Couldn't a box of the size and bracing of say, a current gen PB13U make up the weight difference with the material swap? Sure BB costs more, but the price difference would be less than the cost of Neo.
Or am I missing something obvious here?