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mcbuggin
06-27-2008, 10:30 AM
want to do the port up and don't know if I should do sub up or forward for spl. any help would be nice.
Thanks mel

NissanKicker
06-27-2008, 10:37 AM
Hmm... I'm assuming you have the hatchback.
...
1) I'd do Subs up, port forward
- probably the most infamous style ( CRX Style ).

bumpin buick
06-27-2008, 10:41 AM
wall it

NissanKicker
06-27-2008, 10:55 AM
^^^^^ That always works too!

NissanKicker
06-27-2008, 10:55 AM
^^^^^ That always work too!

mcbuggin
06-27-2008, 11:02 AM
a wall might be in the futcher but not now I already have it in a crx style but want to change it up since I didn't get the numbers I was hopeing for

NissanKicker
06-27-2008, 11:04 AM
Hmm... Turn the box facing the front!
... What's the tuning of your enclosure?

mcbuggin
06-27-2008, 11:12 AM
it's tuned to around 40hz and use it for street beat with 2 15's and a 40.1 I can only get 147.2 out of it in my bug I was doing a 151

NissanKicker
06-27-2008, 11:30 AM
Hmm, maybe tune lower ( CRXs usually are tuned higher... as of my knowledge - might be wrong )
... More port area ( bigger port.... different style port )
Instead of L shape, slot, square... use a 6" - 8" circle .....
... just don't limit yourself, or get disappointed cause it didnt do what it did before.

Just cause it hit a 151 in that car, don't mean it'll be the same in another. ( The bug could have peaked @ at 49 ... this car might peak @ 54...

mcbuggin
06-27-2008, 11:48 AM
ya i know i have 5 4" psp ports now but think i'll go with a slot port tuned to around 37hz sub and port up box will be 33x37.5x16.75 outside dimentions will start building this afternoon unless someone knows that haveing the subs forward gives a better reading on the mic. Thanks for the help everyone

NissanKicker
06-27-2008, 12:49 PM
Well... make it like this!
* My story *

I had the Superbass ported probox for 12s facing the trunk - 139.6 ( Nissan Sentra )
I turned the box around, facing the cabin - 140.7 ( Nissan Sentra )
Bought the Superbass ported probox for L7s ( Modded it for circles - facing the trunk ) - 142.3
I turned the box around, facing the cabin - 144.2
* both were tuned @ ~50hz ... Same style box, just different size *
... Well, I finally built a box - Instead of the port right down the middle, port is on the side, subs facing the trunk. Tuned @ ~48.39 - 146.5

Point - You just gotta play around.
.... I put this setup in my honda ( 146.9 ). and then in my 4 runner ( 145.8 ) * And I thought it was gonna be louder in the SUV... sike

SethPhillips
06-27-2008, 03:12 PM
this is what mcbuggin has right now..............


first question...
8 cu ft net, supposed to have 128 sq inches of port area...

have a 136 inches of port area, is that too mutch

3 8'' areo ports

looking to tune it to 37 hz...

sub's forward, port's back.

in a 88 honda civic hatchback

two 15'' AQ hdc3's

wanting more allong the spl.

secound question...
allso in a 88 civic hatchback, goal here is pure spl.
what do you think the box design should be?
port's forward, out the rear? up?
sub's up, back, forward??

NissanKicker
06-27-2008, 03:22 PM
IMO - Question 1: More port area....
IMO - Question 2: You won't know until you do each one with each one....
* subs forward - port up/forward/back/side
* subs up - port up/forward/back/side
* subs back - port up/forward/back side
** I've seen this ** subs side - port foward/back

Draw each one up...
... See which one you like the most
Post pictures, ask for comments on design
... Take whatever comments or advice ( only yours really counts )
Then apply

SethPhillips
06-27-2008, 04:04 PM
i know it's more port area...

SethPhillips
06-27-2008, 04:05 PM
what need's to be done is finding th resonent freq of the car. and tuneing the sub to that.

NissanKicker
06-27-2008, 04:57 PM
( that's what I was getting at when I was tellin' my story )
.... lol! Couldn't think on the word.