Fi IB318 or Ultimax 18-22 - Home Theater Forum and Systems - HomeTheaterShack.com

 1Likes
  • 1 Post By ryker
 
Thread Tools
post #1 of 4 Old 06-13-17, 04:19 AM Thread Starter
New Member
 
Join Date: Mar 2008
Posts: 1
Fi IB318 or Ultimax 18-22

I currently have a pair of adire audio tempest for my IB. I want to upgrade to the either the ib318 or the um18-22. I see the FI is quite popular but what about the ultimax? Pricewise I can get a pair of the ultimax for $100 less than the ib318. Any suggestions?
carlthess40 likes this.
ryker is offline  
Sponsored Links
Advertisement
 
post #2 of 4 Old 06-13-17, 06:52 PM
Senior Shackster
 
Join Date: Sep 2015
Location: Las Vegas
Posts: 431
My System
Re: Fi IB318 or Ultimax 18-22

At least in theory, the higher Qts parameter of the Fi IB3 18 means will function better in an infinite baffle situation, and the lower Qts of the UM18-22 is happier in a box... BUT, the UM18-22's Qts isn't so low that it couldn't be in and IB setup, and the IB3 18's isn't so high that it couldn't be boxed. If you have at least 36ft^3 of space behind your baffle, either one works on paper.

The big difference is the IB3 18 will displace a lot more air... it has a 50% larger Xmax and a marginally smaller piston area. This will translate to a lower system f3, meaning more bottom end. And since that's what IBs are all about, that's the direction I'd go.

Last edited by DqMcClain; 06-13-17 at 07:07 PM.
DqMcClain is offline  
post #3 of 4 Old 08-18-18, 03:26 AM
Shackster
 
Join Date: Mar 2012
Posts: 29
Re: Fi IB318 or Ultimax 18-22

I know the um18 and 15 work great in a tuba box and will put out some amazing sound levels with very low power
I've made these boxes using the 12" and the box was 22 wide 26" high and 36"deep and came in at 200lbs. Give or take 20lbs
And I ran a Yamaha p5000s in mono and I could get 132db and the green Signal lights barrel would blink and had the volume control of the amp about 2/3 way up and the marantz sub Perot set at O



Sent from my iPad using Tapatalk
carlthess40 is offline  
 
post #4 of 4 Old 08-19-18, 09:54 PM
Elite Shackster
 
RTS100x5's Avatar
RTS100x5
 
Join Date: Sep 2009
Location: Plano, Tx.
Posts: 1,205
Re: Fi IB318 or Ultimax 18-22

If you can check into the IB24's at Stereo Integrity - he still makes them even though they are not listed...the output below 20hz is flat out rediculous - I only have 1 and I don't even bother turning on my UM15's anymore
RTS100x5 is offline  
Reply

Bookmarks

Tags
1822 , fi , ib318 , ultimax

Quick Reply
Message:
Options

Register Now




PLEASE COMPLETE ALL REQUIRED FIELDS BELOW... THANKS!

REQUIRED FIELDS ON THIS PAGE
YOU MUST COMPLETE ALL OF THESE

Username
Password
Confirm Password
Email Address
Confirm Email Address
Random Question
Random Question #2




User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
PLEASE READ BELOW PRIOR TO ENTERING AN EMAIL ADDRESS!

ATTENTION!

YOU MUST ACTIVATE YOUR ACCOUNT!

Activation requires you reply to an email we will send you after you register... if you do not reply to this email, you will not be able to view certain areas of the forum or certain images... nor will you be able download software.

AN INVALID EMAIL ADDRESS WILL CAUSE YOUR ACCOUNT TO BE DELETED!

See our banned email list here: Banned Email List

We DO NOT respond to spamcop, boxtrapper and spamblocker emails... please add @hometheatershack DOT com to your whitelist prior to registering or you will get nowhere on your registration.


Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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 is not allowed!
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 


For the best viewing experience please update your browser to Google Chrome