SQ box questions?
I am building a box for a CDT MS-80 8" sub. Due to tight space limitations it is being made of half inch MDF. Internal dimensions will be 13.5" wide X 8" high X 6" deep giving me 0.375 cu/ft internal volume.
The sub specs call for a box between 0.25 cu/ft and 0.45 cu/ft with no mention of whether that is raw dimensions of dimensions with sub installed.
I do not know exactly how to determine sub dispalcement volume but I guessing about 0.33 cu ft? If someone has a more exact measurement please let me know.
The box is being made fit in the passenger side footwell of a 99 Mazda Miata. It will be carpeted on the outside to match the car.
My questions are:
1-How much acoustic filling should I use for this application either by weight or by volume?
2-For maximum SQ would I be better off facing it forward towards the passenger seat or rearward towards the firewall (there is a couple inches of oddly spaced clearance back there.
3-Is there any benefit to using a hard coat of varnish inside the box or outside. I am sure this would help in sealing the box but am unsure of the effect on SQ.
4-Getting any larger size for the box is nearly impossible and still have the passenger seat usable. Shallower depth is possible. if I drop the depth to 5" internally this would leave a volume pf 0.3125 cu/ft without the sub. Are there any benefits SQ wise to this? Would SQ suffer? Would SPL be more or less?
Thanks in advance for all responses and opinions.
Eclipse CD3432 HU, Memphis ST3004 75 X 4 amp, CDT 6.5" classic components, CDT MS-80 sub, 2 Aura bass shakers...all in a 1999 Mazda Miata.
"It takes a wise man to know what he does not know."