RL-P15 Design And Brace Question

[Jerm357]

Im going to make a 8.5CF enclosure with a tune of 17hz for my RL-P15 D2 using a 6"port. Im thinking of making it 20 1/4" W X 20 1/4"D X 48"H which is 9.46CF. After I take out the port of 27.21" (Winisd) and the driver I get 8.79cf. Now about braces how many would you recommend? The top is going to be 1.5" and the bottom is going to be 2.25 so I can flush mount the driver without a router. I would like to get away with 3 that would put them at about 16" apart but that probly is not going to cut it 5 would be a better option at 9.6" apart, what do you think? There probly going to be a 5 circle brace with the middle one just big enuff for the port and the rest as big as I can fit with out getting to close to the edge. This is going to be down firing so over all the hight is going to be about 56" and is going to be powered with an EP1500. Please any opinions on this design would be apresheated.

Ps. Could some one please post some Winisd and Unibox graphs of a 8.5CF and a 17hz tune with the Rlp d2 so I can compair it with the ones I have done.Thanks Jeremy

[jonathanb3478]

I would like to get away with 3 that would put them at about 16" apart but that probly is not going to cut it 5 would be a better option at 9.6" apart, what do you think?

Uhhhh...

no.



3 braces would put them 11.4375" apart. That assumes you use 3/4" thick braces. 5 would be 7.375" apart with the same assumption.

_top
|11.4375
_.75" brace
|11.4375
_.75" brace
|11.4375
_.75" brace
|11.4375
_bottom

That is your internal 48"es. Unless your 48" number includes the 1.5" top and 2.25" bottom. But your 16" number seems to indicate that is not the case.

I would think 3 would work fine, but I would run a vertical stringer through the center of each vertical 20.5" side panel. Then you would have 9.875"X11.4375" unsupported panels, which seems small enough to me. I could be wrong. Anyone?

[Jerm357]

Im going to build a 20 1/4" X 20 1/4" X 48" box then add a 20 1/4" square to the top and 2 squares to the bottom 4" legs and a 1.5" bass plate. The 16" was just 48 divided 3 but I do see what your saying. It would be more like 11" apart the way I was planning to build this.
.75 top
11
.75
11
.75
11
.75
11
.75 bottom
Is 11" far enuff?