porting IDQ8's - diyAudio
Go Back   Home > Forums > General Interest > Car Audio
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 5th August 2008, 02:42 AM   #1
diyAudio Member
Join Date: Nov 2004
Location: ga
Default porting IDQ8's

I am looking at porting IDQ8's. I am crossing my IDQ's to my subs at 90 Hz at 24db so I am not looking for low end extension but more efficiency.

I have made and installed a box that is .35 cu ft.
If I tune the box to 70 Hz, I get a 6 db boost at 100Hz (peaked at 100Hz) over the IDQ8 in a .25 cu/ft box.
If I tune the box to 70 Hz, I get a 4 db boost at 100Hz (peaked at 95Hz) over the IDQ8 in a .25 cu/ft box.
If I tune the box to 60 Hz, I get a 4 db boost at 100Hz (peaked at 90Hz) over the IDQ8 in a .25 cu/ft box.

I am active and have eq capabilities, so I should be able to balance everything out, but it seams that I should take advantage of the extra power.
  Reply With Quote
Old 5th August 2008, 04:16 AM   #2
amc32 is offline amc32  United States
diyAudio Member
Join Date: Mar 2008
First off. Not knowing the alignment parameters of the sub and box your using to quote from.It seems that none of the examples you have given will sound good.With the x-over freq.and slope your using,that in itself will nullify what boost you may be getting.The tuning freq. is way too high to satisfy your taste for low freq.(bass).Going off from the description given you may want to try other speakers or a different alignment (sub+enclosure).With more info as to how your coming up with these cabniet designs,speaker parameters.Maximum cabniet volume your willing to sacrifice,it will be easier to help you with this project.
  Reply With Quote
Old 5th August 2008, 07:41 PM   #3
jol50 is offline jol50  United States
diyAudio Member
Join Date: Nov 2007
I see what you are trying to do, but IMHO I would shy away from too much. I think better to keep it smoother and EQ less. I would tune it lower and stay at 3db or less and not have a big hump in the response. What I would rather do myself is run 8s in front lower, say to 50 if possible and subs under them. Also I can not ever see a need for tons of 100hz, I hate 100 hz if it stands out at all but that just my .01.
  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
porting a midbass mitchyz250f Multi-Way 33 26th October 2008 02:59 AM
slot porting skooter Car Audio 10 19th November 2007 12:36 PM
speaker porting robotnation Subwoofers 12 11th January 2006 10:20 PM
box porting question offroadbum Car Audio 2 7th November 2004 12:34 AM

New To Site? Need Help?

All times are GMT. The time now is 01:24 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2