Termpro Audio Forum Post New Topic  Post A Reply
my profile | directory login | register | faq | forum home

  next oldest topic   next newest topic
» Termpro Audio Forum » Component Specific Topics » Subs and Enclosures » 4th order question

 - UBBFriend: Email this page to someone!    
Author Topic: 4th order question
pr-festiva
Member
Member # 20856

Icon 1 posted      Profile for pr-festiva   Email pr-festiva   Send New Private Message       Edit/Delete Post   Reply With Quote 
Wondering if i need a peak at 61Hz where should i tune the front chamber approx.?
Posts: 109 | From: murry NY | Registered: Aug 2007  |  IP: Logged | Report this post to a Moderator
Master Yoda
Member
Member # 21871

Icon 1 posted      Profile for Master Yoda   Author's Homepage   Email Master Yoda   Send New Private Message       Edit/Delete Post   Reply With Quote 
well that is a good question!! I think a little more infromation would be helpful? please post all the details of the setup! car, subs, box setup? (wall or box) what are the goals of the setup?

--------------------
TEAM DB UNIT (Master Yoda)
2006 Competition Only Hardcore Points Champion
2006 Competition Only Trunk Stock Points Champion
2007 Competition Only Trunk Stock Points Champion
2008 Competition Only Overall Points Champion http://www.competitiononly.com/
Authorized Second Skin Dealer
www.secondskinaudio.com
 -
[IMG]

Authorized Cactus Dealer
http://www.team-cactus.com/
 -
[IMG]
 -
 -

Posts: 426 | From: Sumter, SC | Registered: Nov 2007  |  IP: Logged | Report this post to a Moderator
pr-festiva
Member
Member # 20856

Icon 1 posted      Profile for pr-festiva   Email pr-festiva   Send New Private Message       Edit/Delete Post   Reply With Quote 
the sub is a custom built one from tim roy so i dont know any specifics about it.Its not a wall set up since i have to stay in the cargo area per the rules of the org.the car is a 93 festiva and the only purpose of the box would be to get as big a peak as possible at 61Hz.I was just wondering where 4th orders usealy peak.At tuneing,ten hertz below tuning or what
Posts: 109 | From: murry NY | Registered: Aug 2007  |  IP: Logged | Report this post to a Moderator
Master Yoda
Member
Member # 21871

Icon 1 posted      Profile for Master Yoda   Author's Homepage   Email Master Yoda   Send New Private Message       Edit/Delete Post   Reply With Quote 
It all depends on the specks of the box! you can tune a 4th order to peak at 61hz it takes some test and trial and error to get it just right most people start with a larger rear chamber and the front chamber tunned at 100Hz then stArt working the box to get it to peak where they want it. the size of the rear chamber is going to depend on the how many and what size subs you are using.

--------------------
TEAM DB UNIT (Master Yoda)
2006 Competition Only Hardcore Points Champion
2006 Competition Only Trunk Stock Points Champion
2007 Competition Only Trunk Stock Points Champion
2008 Competition Only Overall Points Champion http://www.competitiononly.com/
Authorized Second Skin Dealer
www.secondskinaudio.com
 -
[IMG]

Authorized Cactus Dealer
http://www.team-cactus.com/
 -
[IMG]
 -
 -

Posts: 426 | From: Sumter, SC | Registered: Nov 2007  |  IP: Logged | Report this post to a Moderator
pr-festiva
Member
Member # 20856

Icon 1 posted      Profile for pr-festiva   Email pr-festiva   Send New Private Message       Edit/Delete Post   Reply With Quote 
single 12" ,i was going to try 1-1.25 sealed and use the rest of the space ported. thanks for the help just wanting as much info as possible before i start cutting sheets of mdf.
Posts: 109 | From: murry NY | Registered: Aug 2007  |  IP: Logged | Report this post to a Moderator
MrCrowley
Senior Member
Member # 13734

Icon 1 posted      Profile for MrCrowley   Author's Homepage   Email MrCrowley   Send New Private Message       Edit/Delete Post   Reply With Quote 
Do you know what the motor on the sub might be?

--------------------
http://s1.bitefight.org/c.php?uid=175990

Posts: 1233 | From: Paoli IN | Registered: Oct 2003  |  IP: Logged | Report this post to a Moderator
pr-festiva
Member
Member # 20856

Icon 1 posted      Profile for pr-festiva   Email pr-festiva   Send New Private Message       Edit/Delete Post   Reply With Quote 
nope sorry,its a triple slug with a 4" coil a pic. of one is my avatar on the caraudio.com forum.
Posts: 109 | From: murry NY | Registered: Aug 2007  |  IP: Logged | Report this post to a Moderator
80INCHES
Senior Member
Member # 17015

Icon 1 posted      Profile for 80INCHES   Author's Homepage   Email 80INCHES   Send New Private Message       Edit/Delete Post   Reply With Quote 
quote:
Originally posted by pr-festiva:
single 12" ,i was going to try 1-1.25 sealed and use the rest of the space ported. thanks for the help just wanting as much info as possible before i start cutting sheets of mdf.

too big
u need more less .4 cubes sealed..and ur ported chamber make that as big as u can...with the biggest port possible tuned to 61hz

80

--------------------
140+DB CLUB

Posts: 1162 | From: WESTCHESTER NY AND BROOKLYN NY | Registered: Mar 2005  |  IP: Logged | Report this post to a Moderator
pr-festiva
Member
Member # 20856

Icon 1 posted      Profile for pr-festiva   Email pr-festiva   Send New Private Message       Edit/Delete Post   Reply With Quote 
so i tune the port of a 4th order where i need it to peak at?
Posts: 109 | From: murry NY | Registered: Aug 2007  |  IP: Logged | Report this post to a Moderator
   

Quick Reply
Message:

HTML is not enabled.
UBB Code™ is enabled.

Instant Graemlins
   


Post New Topic  Post A Reply Close Topic   Feature Topic   Move Topic   Delete Topic next oldest topic   next newest topic
 - Printer-friendly view of this topic
Hop To:


(c) 1996-2007 WHE Inc, Carson City Nevada, USA

Powered by Infopop Corporation
UBB.classic™ 6.7.2