help w/ infinite baffle sub - diyAudio
Go Back   Home > Forums > Loudspeakers > Subwoofers

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
Reply
 
Thread Tools Search this Thread
Old 14th December 2005, 06:57 PM   #1
diyAudio Member
 
HIPCHECK's Avatar
 
Join Date: Jun 2004
Location: ARKANSAS
Default help w/ infinite baffle sub

saw these subs @ 4 for $100.00 at meniscus audio. i wondered if these would work out for a free air install in my car around 12-15ft3 trunk. (maybe with a aperiodic loading setup)

bg made eminence 12in woofer.

free air measure

re 3.52 fo 30.28hz sd 49.087m2 vas 87.674ltr

cms 256.238 u m/n mmd 101.560 m kg mms 107.813g

bl 11.064 tm qms 4.829 qts 0.526 spl 88.029db

i am without a home computer right now and no ability to do any simulations. if anybody could crunch these numbers and let me know what wattage they will handle before having excursion problems, and xmaxx/freq resp/and overall performance these might get it would be of great help.

i might just add a second 15" quattro sub to my car setup.
  Reply With Quote
Old 14th December 2005, 07:52 PM   #2
simon5 is offline simon5  Canada
diyAudio Member
 
Join Date: Nov 2004
Location: Québec, Québec
We can't find xmax, you have to give it to us, then with xmax, we can help you with the wattage.
__________________
DIYaudio for President !
  Reply With Quote
Old 14th December 2005, 08:35 PM   #3
diyAudio Member
 
HIPCHECK's Avatar
 
Join Date: Jun 2004
Location: ARKANSAS
Default xmaxx

well the meniscus specails page had this listed
fs 21hz
qts 1.09
vas 258ltr
xmaxx 11mm
8ohm

which made me think they could be cheap inf baffle subs for my car or dipole subs for my mini computer speakers.

the other numbers are from a email from meniscus

also had these measurements

krm 20.313m ohm erm 0.609 exm 0.802 kxm 9.972m h

dont know if they help.
  Reply With Quote
Old 14th December 2005, 11:21 PM   #4
simon5 is offline simon5  Canada
diyAudio Member
 
Join Date: Nov 2004
Location: Québec, Québec
It's 11mm xmax peak to peak or one-way?

For the price you paid them, I'd guess it's peak to peak.

BTW, the measurements in your first message are completely different from the measurements in your second message.

re 3.52 fo 30.28hz sd 49.087m2 vas 87.674ltr

cms 256.238 u m/n mmd 101.560 m kg mms 107.813g

bl 11.064 tm qms 4.829 qts 0.526 spl 88.029db

VS.

fs 21hz
qts 1.09
vas 258ltr
xmaxx 11mm
8ohm

You said it's 4 ohms, then you say it's 8 ohms, fo and fs are different, qts is different, vas is different...

Maybe they gave you another driver parameters?

Once you give me the right parameters, with the corresponding Xmax value, I'll be able to help you further.
__________________
DIYaudio for President !
  Reply With Quote
Old 15th December 2005, 01:15 PM   #5
diyAudio Member
 
HIPCHECK's Avatar
 
Join Date: Jun 2004
Location: ARKANSAS
Default ts specs

well the first message is what i was emailed after i asked for more information from them. i was sent a email with these made with LMS in free air, delta masss curve.

the second is the small blurb listed next to the speaker on the specials page. 11mm xmaxx and qts 1.09 fs 21hz 8ohm etc...

could they have measured the speaker on a baffle and gotton such total different numbers?

the high qts low fs and ok xmaxx had me interested.

i wish i had better information than this, and thank you for your interest/help with these subs.
  Reply With Quote
Old 16th December 2005, 12:19 AM   #6
diyAudio Member
 
kingdaddy's Avatar
 
Join Date: Mar 2002
Location: Fort Worth, Texas
For IB you want low Q, high x-max and as much SD as you can afford.
__________________
http://kingdaddy.linaeum.com/
  Reply With Quote

Reply


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
Infinite baffle vs Sealed enclosure IG81 Full Range 2 4th March 2009 02:47 PM
ESL in infinite baffle hugobors Planars & Exotics 9 15th March 2008 04:22 PM
Help with infinite baffle. Andrew S- Multi-Way 2 8th February 2006 03:53 PM
Infinite Baffle. Best bet if possible? Hybrid fourdoor Multi-Way 50 9th July 2004 08:52 PM


New To Site? Need Help?

All times are GMT. The time now is 03:17 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2