370Z Sub Box Feeler

sceptre155

So like others I wanted to keep weight down. I used a 3/4 chunk of birch plywood for the plate. The amp is mounted on bracket cut from the same material and bolted to the two 7/16 bolts coming up through the floor. Smack dab in the middle of the space. So right now With the 3/4 bracket and the height of the amp I only have 1/2 between the subs and the amp. I may make another bracket from some thinner material, or I may just make the sub enclosures out of some epoxy fiberglass I have left over from working on my scarab. So as of right now they are all running free air. I've been keeping it turned down till I get time to enclose the subs. I'll leave the 6'5 running free air I imagine. If I remember right, I'm not sending anything lower then 80 hertz to them. Unless someone tells me they sound better then they already do enclosed. 105 bucks is cheaper then I thought it would have been. I have 15 bucks in material and 20 minutes in time on the one i made. So not all bad. I just need to finish the edges.

37Z

Is the sub plate paint finished? My sub box is only 1/2" thick (two 1/4" basa-core (coremat) sandwich constructed with fiberglass cloth on both sides with a fiberglass middle core). It is strong enough to support one 8" or two 8" subs and and amp. The sub box and plate weighs in at 6 lbs. I do not think most here know of the construction technique I am referring to in my sub box.

Off-topic: Is your boat a 38 foot Wellcraft Scarab? I had one myself with twin supercharged 540 big block engines back in the day. Nice offshore boat. :tup:

sceptre155

I was going to weigh the plate before I mounted the speakers but forgot. The plate is done for the most part. All I did was wrap it in the same felt I made the truck mat from. I want to say the plate weighed right around 5 pounds.. The bracket for the amp, maybe 2 pounds. I went with the 3/4 plate to give me just a tad more room for the amp and so that I could keep the 6'5 speakers out towards the outer edges. The speaker grills made them just a tad to big to fit.



Monster boat man... Mines only a 32ft with twin 454 magnums. Crushing waves is the best... ok maybe more like skipping across the top heheeh. I recently sold my Raptor, and the scarab is next. I love boating.... But man... gas prices are melting a hole in my pocket. A guy down the road as a 44ft with triple 502's... I can't even imagine... But if you have a 150k+ boat you probably don't care.

37Z

In regards to the sub bracket; you may want to fab a sub box in order to get the best punch from those speakers. The is little room (width) so I found it best to fab the sub box from fiberglass so the speakers will fit as flush to the existing rear hatch floor.

Sold the boat years ago due to having little time to enjoy it.