Wednesday, May 22nd, 2013



- It is currently Wed May 22, 2013 9:42 am

View unanswered posts - View active topics


Board index » Trinituner » I.C.E. / Car Audio Tech

All times are UTC - 4 hours


Jump to:  


Post new topic Reply to topic  Page 1 of 1
  [ 12 posts ] 


 
Search:

Previous topic | Next topic
Author Message
3NE_SOUNDZ
PostPosted: Sun Mar 11, 2012 12:39 pm 
Offline
Ricer

Joined: Sat Nov 22, 2008 1:47 pm
Posts: 19
Need your advice on a box build for two sundown audio SA-8 dual 2ohm. Not so good at box building so any advice will help. This is what i came up with so far.

These measurements are external.

Height - 12"
Lenght - 21.5"
Depth - 13.5"
Wood thickness - 3/4"

That works out to 1.5 cubes for the internal volume. They recommend 0.5-0.75 ft^3 @ 35hz for 1 sub ported.

For the port i came up with this and its 1 port only. Not sure if i did this right to achieve around 35Hz.

Height - 10.5"
Width - 3/4"
Lenght - 9.5"
Wood thickness - 3/4"

SUB SPECS

RE: 3.28 ohms
FS: 41.6 Hz
VAS: 3.285 L
Qes: 0.513
Qms: 6.606
Qts: 0.476
Le: 2.778 mH
BL: 17.138 N/A
Mms: 175.654 g
Sens: 78.476 dB
RMS: 400 Watts

Let me know what you guys think. Should i go with a slightly bigger box and add internal bracing? Not sure how to minus for bracing and port as well. Any box ideas will help thanks.


Share on FacebookShare on Twitter
Top
 Profile  
 
evolution7tt
PostPosted: Sun Mar 11, 2012 6:56 pm 
Offline
Chronic TriniTuner
User avatar

Joined: Tue Oct 21, 2003 12:56 pm
Posts: 657
Location: South
Try using the RE Audio Box Calculator. It's free, google it.
Top
 Profile  
 
K. Gosine Audio
PostPosted: Sun Mar 11, 2012 7:03 pm 
Offline
Trinituner Peong
User avatar

Joined: Thu Jul 30, 2009 12:01 am
Posts: 404
Location: carapichaima
With 3/4 MDF you don't need bracing also for that box the cuts would not be large as to flex.

You can google Chris Torres box calculator and download it..it's the simplest and accurate one out.

Also for port area go with 12-16 square inches of port area per Cubic foot of box volume.

Stick to the recommended .5-.75 ft per sub.

_________________
oGnOm
Top
 Profile  
 
3stagevtec
PostPosted: Mon Mar 12, 2012 1:53 am 
Offline
TriniTuner 24-7
User avatar

Joined: Wed Jul 12, 2006 1:57 pm
Posts: 8689
Location: killing two stones with one bird...
3NE_SOUNDZ wrote:
Need your advice on a box build for two sundown audio SA-8 dual 2ohm. Not so good at box building so any advice will help. This is what i came up with so far.

These measurements are external.

Height - 12"
Lenght - 21.5"
Depth - 13.5"
Wood thickness - 3/4"

That works out to 1.5 cubes for the internal volume. They recommend 0.5-0.75 ft^3 @ 35hz for 1 sub ported.

For the port i came up with this and its 1 port only. Not sure if i did this right to achieve around 35Hz.

Height - 10.5"
Width - 3/4"
Lenght - 9.5"
Wood thickness - 3/4"

SUB SPECS

RE: 3.28 ohms
FS: 41.6 Hz
VAS: 3.285 L
Qes: 0.513
Qms: 6.606
Qts: 0.476
Le: 2.778 mH
BL: 17.138 N/A
Mms: 175.654 g
Sens: 78.476 dB
RMS: 400 Watts

Let me know what you guys think. Should i go with a slightly bigger box and add internal bracing? Not sure how to minus for bracing and port as well. Any box ideas will help thanks.



http://www.jlaudio.com/header/Support/Tutorials/Enclosure+Ports/Tutorial%3A+Enclosure+Ports/656168

Quote:
Image

W / h
The ratio of W to h should not be any more than 9 to 1 to prevent tuning shifts introduced by excessive friction between the rapidly moving air and the port's surface. It should be noted that this is not a hard-and-fast rule, merely a rule of thumb to help you prevent a mis-tuning.

In short, keep the port as square as aesthetically and physically possible.


I didn't double check your calculations but once you follow Sundown's recommendations, you will be pleased.

The 12 - 16 square inches of cross sectional port area pre cubic foot of net internal box volume is good to follow as well.

_________________
It's not leaking oil, it's sweating power!
Top
 Profile  
 
3NE_SOUNDZ
PostPosted: Mon Mar 12, 2012 10:37 am 
Offline
Ricer

Joined: Sat Nov 22, 2008 1:47 pm
Posts: 19
Ok thanks guys. This is what i came up with. What you guys think?


Attachments:
SA-8 BOXX specs.jpg
SA-8 BOXX specs.jpg [ 100.73 KiB | Viewed 938 times ]
Top
 Profile  
 
3stagevtec
PostPosted: Mon Mar 12, 2012 1:38 pm 
Offline
TriniTuner 24-7
User avatar

Joined: Wed Jul 12, 2006 1:57 pm
Posts: 8689
Location: killing two stones with one bird...
Looks good..

Post pics and a lil review when you done..

_________________
It's not leaking oil, it's sweating power!
Top
 Profile  
 
black start
PostPosted: Sun Mar 18, 2012 11:57 am 
Offline
3ne2nr Toppa Toppa
User avatar

Joined: Thu Feb 25, 2010 10:42 am
Posts: 5010
Location: conquering the pothole solodex
real good info inside here

_________________
devrat wrote:
You noticed
S_2NR wrote:
boots? really? :lol:



S"undar" 2NR......i am disappoint.
Top
 Profile  
 
3NE_SOUNDZ
PostPosted: Thu Mar 22, 2012 8:08 pm 
Offline
Ricer

Joined: Sat Nov 22, 2008 1:47 pm
Posts: 19
Couple pics for you guys.


Attachments:
BOX 3.jpg
BOX 3.jpg [ 411.02 KiB | Viewed 763 times ]
BOX 2.jpg
BOX 2.jpg [ 245.77 KiB | Viewed 763 times ]
Box 1.jpg
Box 1.jpg [ 152.81 KiB | Viewed 763 times ]
Port.jpg
Port.jpg [ 106.63 KiB | Viewed 763 times ]
SA-8 1.jpg
SA-8 1.jpg [ 410.8 KiB | Viewed 763 times ]
Top
 Profile  
 
kurpal_v2
PostPosted: Thu Mar 22, 2012 10:27 pm 
Offline
TriniTuner 24-7
User avatar

Joined: Fri Dec 28, 2007 9:17 pm
Posts: 10172
Location: Chilling with Akeem
nice work man.


How does it sound?

_________________
Duane 3NE 2NR wrote:
S_2NR wrote:
firetruck that. i love my dark tint and my privacy.
if you like privacy then stay home 8-)
Top
 Profile  
 
wanted
PostPosted: Thu Mar 22, 2012 11:59 pm 
Offline
Street 2NR

Joined: Sun Jun 12, 2011 12:39 am
Posts: 66
I'll try to come down to Rienzi on Sunday and give you guys a demo of a Sundown 8.
Top
 Profile  
 
3NE_SOUNDZ
PostPosted: Sun Apr 01, 2012 5:50 pm 
Offline
Ricer

Joined: Sat Nov 22, 2008 1:47 pm
Posts: 19
Here is a lil video for you guys.

http://www.youtube.com/watch?v=Zf0QyOZj ... e=youtu.be
Top
 Profile  
 
nervewrecker
PostPosted: Sun Apr 01, 2012 7:04 pm 
Offline
TriniTuner 24-7
User avatar

Joined: Tue Jul 31, 2007 2:27 pm
Posts: 12843
Location: Poor Towelie, Leroy wrap living sausage with him. :(
Damn, those subs moving!
Vid looks good too, what did yo make it with?

_________________
proline sounds wrote:
i is ah man does deal up in line arrays i must know about zebra

Misc stuff for sale and for free
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 12 posts ] 

Board index » Trinituner » I.C.E. / Car Audio Tech

All times are UTC - 4 hours


Who is online

Registered users: *Phoenix*, -Roach-, 0001, 13 GHOST, 2 d Max Auto, akabirdman, alleykat2020, Anthony_Pain, anthonybatson, Anton, archangel2011, besham, Bing [Bot], blacktriple_s, bonzo.specb, cake, candyman, cherrypopper, civir, cookiemonstar, Crackpot, danmad, danOntheRun, Darweshi, de_syco, DM117, dok_tec, DRS2442, Dwain GTM, evolve-x, Freak, gallantpan, garthstephens, Google [Bot], Google Adsense [Bot], Google Feedfetcher, Groundcontrol, GT RACING, Hance Rampersad, hayden6025, Hook, hustle, intelMAX, jblCROWN, jessekhan, jmccomie, Kaizen Autosound, Krakkle, LOUD AND CLEAR AUDIO, macoy, malikxj9, mamoo_pagal, mansing_12, Marlon..., mboi123, metalgear2095, mojoe, moving, MSN [Bot], MSNbot Media, Musa, Narindra, neocyst, New_SPECIES, nick69, Nopiston, paw pa, pete, PS3 Game Trader, Rai777, ravinh, ray786, rcm25, realjitsu, reeLpACE, RIPEBREDFRUIT, ryo3303, searchingone, selectar69, sello, SHABA, shocksub, Shogun11, shortbo$$ ( mark ), sick, SKYFALL, Smurfy1, speedmelter, spoilchild181, STARGATE, stev, SUPERMAN2, Sweet Angel 2008, Talisman, techie007, teems1, TEMPO, Tinkerbell2012, TM MAD, TOIZ WIT NOIZ, Tonio2000, Top Gear, TRAE, tramp, transporter001, Trini Hookah, triniwhiteboi, turbo tercel, turboconch2, turbonator, turbosingh, ultimatefan, unmannerly, vipervega, virtualspeedster, wankle, wiked, Xecutive

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group
3NE-2NR