john253a

Didn't see the 1700wrms bit Idd drop the box size down to 3cuft net at 33-35hz or lower port size to 14sqin @3.5 net

Idd say it's pretty dam fine idd add another 1-2" on port length to allow for cnr bracing and you'll be fine

after much reading im seeing may people running 23sq in per ft due to the high xmas of this sub what are peoples thoughts on this? is it too excessive? as im looking to redo my current box 1.2cuft net 17sq in port (8.5x2) @ 35hz (14.2 sq in per ft) on 375-400 ea @2ohm (kicker zx750.1) will be in the trunk of a hsv r8

bigger company's have bigger overheads,

The only way I can see 2 15 fitting is port rear into cab and free the front in rest of trunk It will take a lot of calculations to correctly work out volume and a sum of good sound deading A local shop near me done 3 JL15"s this way in a WRX Edit It's not the best way to do it but may work for you

That happens with an iPhone when you try to edit The smallest 2 15 4th order I've done were 3sealed 7ported (type-r's) The norm is 4-8 or 4-9 I'm not saying 12sealed 18ported I'm saying 12 to 18 all up

That's right the only good amp Ask them how long it been working for and test it output now There are heaps better products out that will produce better sq and last longel for a small amount more

2 x15 in 4order at 1:2 Will be around 12-18cuft net depending on subs That's 16-24cuft gross You really think you have that much space I don't thing so And then to suggest an 18 Your got low 8's in cuft That a single 15 4th order or maybe 2x12"

you got 2600, want well rounded, and you must use use one of the cheapest amps on the market, idd just do 2x 15" ported in 3cuft each a good set or 2 of comps up front, with a good HU you sill way under 2

32x36x15=8.22gross 9x9.5= 85.5sq in 9x9.5x38= 2.5 0.22 sub displacement 1 common wall =5.4 net 15.7 per ft @ 29hz its not what illd build for the app but as i said before more power or more space i prefer close to 20 per ft for this app

take the a/c of recirc and switch to fresh

unless he can fit a bigger box or add more power there isnt much more port that can be added without lowering the net to much

are you dreaming its 15.7 per ft

7.3cuftnet @ 36hz and 76" port if you ask me port is too small and tune is to high idd look at something 36x32x15(h) 9x9.5x38" port

I prefer to to have them but you don't need them The easiest way to do it is set the saw at 45deg and cut L1 (you can do after cut sheet is done As long as you don't shorten L1) And the small price you cut off put it in cnr. Or if you have a router, cut that cnr. of L1 and get some edging (this is what I prefer) Most of the edging at my local has a flat on the 90deg side witch allows me to fill it with silicon then apply edging and nail inplace for a perfict seal.

I'll draw it up for u with hz Around 33-34

few questions what sub? how much poewer? front or back firing? and max box specs?

20x30x18(h) in 3/4mdf 16.5x3.5x30(l) port 5cuft gross 3.5net 34hz

im getting 38hz @ 1.48cuft net each

what subs and amp do you have and what are the max dimensions the measurements you have are around 6cutf @25hz

with an fs 40.4hz and you want to port it to 25hz that is a straight out spl sub idd choise another sub or tune that box abit higher and on another note youll neet about 26cuft gross to get 230sq in of port @ 25hz and have 14cuft net

I normally use this style if 2 or more amps are use I only use common chambers if all on same amp And on large boxes to elimate unnessery bracing and cost This may suit you as no bracing is require

1.5" all round, no extra bracing required and you should be able to through close to full power at it