bracing ?

[aimone 4]

so i used the re calculator and designed a new box for my r.f. power hx2 15. now what im wondering is when i add bracing will that affect my tuning? and how should i do the bracing?

[Duran 387]

The bracing will change tuning because it occupies airspace. It can be done a lot of ways, wooden dowels, window bracing, and threaded rods are the most common.

Check your enclosure with this calculator, as it used the correct formulas and is right if the vent has a bend in it, the RE Calculator does not calculate port bends correctly.

[Duran 387]

A lot of people here would love to double check the numbers for you, I'll be out of town for a while so I cannot.

[aimone 4]

thanx duran, ok so im gonna build a new box same general size of my current one just tuned higher......my box now is h=20" w=35.75" d=15" slot port w=3" port wall1=10.5" portwall2= 17" ...which is tuned at 30hz no double baffle or bracing......

so i want to tune the next one about 37hz with bracing(all thread) and double baffle can anyone help me

[antonmiller 8]

thanx duran, ok so im gonna build a new box same general size of my current one just tuned higher......my box now is h=20" w=35.75" d=15" slot port w=3" port wall1=10.5" portwall2= 17" ...which is tuned at 30hz no double baffle or bracing......

so i want to tune the next one about 37hz with bracing(all thread) and double baffle can anyone help me

whats the internal air space you require? and are those dims internal or external? which way is the port and sub? ex: sub up port back.

oh, and whats the vehicle and amount of power?

[aimone 4]

alton designed it for me and he said"this is 3.5cuft net, including the sub and port displacment the box is 4.66 cuft. The best use of space I could come up with is 20" H x 15" D x 35.750" W with a 3" port width and total length of 31" for 30hz tuning" and its outter dims...

its mounted in the backseat well replacing my backseat of a 76 chevy caprice. sub and port facing windshield also sub is centered aiming between the front seats with port on passenger side. right now its powered by a monoblock bazooka 500w rms(supposedly) but i got a saz1500 fixin to be sent out for repair while i build a new box........i used the backseat because the trunk would take WAAYYYY to much time and money to seal off due to rust and stop rattles