IB Home Theatre Setup - Design Ideas - AVS Forum
Forum Jump: 
 
Thread Tools
post #1 of 8 Old 06-25-2014, 07:38 PM - Thread Starter
Newbie
 
Join Date: Jun 2014
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 0
IB Home Theatre Setup - Design Ideas

Hi, I'm new here and this is my first post. Not likely to be my last considering how active and helpful everyone seems to be. Having said that, here goes....

I have a relatively large room in my basement where my home theatre is. You'll notice in the front center a section of 45deg bumpout. This currently houses my a/v equipment. (all kinda stacked up on the floor ) The house is quite new, we've only just finished building in February with much left to do but we're living here now so that's the best part.

I really want to do an IB setup for the subs and I can basically fill in the 45deg. section to do so. Bracing the wall is no problem so I am thinking of having the subs fire out into the room. My question is if I can get reasonably good results using just 2 of the Fi IB318's? I can have roughly 140cu.ft. of volume behind the wall so if I have to go with more it is possible.

When I get my wall and shelving designed I'll post some CAD renderings but for now I've posted a pic which shows the room dims.




Thanks in advance,
Scott
_WeaSiL_ is offline  
Sponsored Links
Advertisement
 
post #2 of 8 Old 06-25-2014, 11:33 PM
AVS Special Member
 
BassThatHz's Avatar
 
Join Date: Apr 2008
Location: East side of NW Cascades
Posts: 2,732
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 155 Post(s)
Liked: 330
The more subs the better; until the threshold of pain is reached. Otherwise there is no non-zero minimum or maximum.
The formula is as simple as that!
BassThatHz is offline  
post #3 of 8 Old 06-26-2014, 02:37 AM
AVS Addicted Member
 
LTD02's Avatar
 
Join Date: Oct 2003
Posts: 16,110
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 195 Post(s)
Liked: 909
in a big room, ported cabs will help a lot for the low end.


infinite baffle is limited the same way sealed subs are. all the work must be done by the driver. with enough of them, that's not a problem...but 'enough' can sometimes be a really large number. :-)

Listen. It's All Good.
LTD02 is online now  
post #4 of 8 Old 06-26-2014, 04:35 AM
AVS Special Member
 
Martycool007's Avatar
 
Join Date: Jun 2011
Posts: 3,466
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 145 Post(s)
Liked: 146
Quote:
Originally Posted by LTD02 View Post
in a big room, ported cabs will help a lot for the low end.


infinite baffle is limited the same way sealed subs are. all the work must be done by the driver. with enough of them, that's not a problem...but 'enough' can sometimes be a really large number. :-)
How would two IB3-18's in an IB configuration compare to two Dayton HO18's with each in a full sized MartySub? What about comparing those same two HO18's, each in a full sized Marty, but with four IB3-18's in an IB configuration with two manifolds of two drivers each?
Martycool007 is offline  
post #5 of 8 Old 06-26-2014, 04:48 AM
AVS Addicted Member
 
LTD02's Avatar
 
Join Date: Oct 2003
Posts: 16,110
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 195 Post(s)
Liked: 909
here you go marty. green 2x martysubs. blue 2x ib's.


doubling up the fi drivers (going from 2 to 4) would give +6db, roughly.
Attached Images
File Type: png marty.png (22.9 KB, 88 views)

Listen. It's All Good.
LTD02 is online now  
post #6 of 8 Old 06-26-2014, 12:42 PM
Senior Member
 
Stumbo's Avatar
 
Join Date: Aug 2003
Location: Bakersfield, CA
Posts: 489
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Liked: 40
In a room this size (~4500cu) I would want 4 Marty's or 6 ib318s, but I don't know what your listening style is. This should get you close to reference levels.

If I had to pick between the two, I would go IB318.
Stumbo is online now  
post #7 of 8 Old 06-26-2014, 04:21 PM - Thread Starter
Newbie
 
Join Date: Jun 2014
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 0
I really and truly wish that I could do 6 IB's. Unfortunately that just isn't the case. If I do decide to go with the two 18's and I'm getting the impression that it is a feasible option. I'm thinking of using DIYsoundgroup speakers for the rest of the system. If I pair up 4 of the Fusion-6's for surround duties, and 2 Fusion-10 Pures for LR and a Fusion-4 Quad4 for Center, would there be any large holes in the system? I have wiring in place for the 6's to hang from ceiling.


Thanks again,
Scott
_WeaSiL_ is offline  
post #8 of 8 Old 06-26-2014, 09:35 PM
AVS Special Member
 
Thomas-W's Avatar
 
Join Date: Oct 2000
Location: 5280'
Posts: 1,377
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 14
2-18"s aren't enough for a room that large unless you plan on sitting 10' from the IB.

There's a $10/driver discount available when 4 drivers are purchased at one time, that's probably your best bet if the budget is limited.

Note: don't mix ported subs with IB's, If you need additional drivers to even out in room response use low 'Q' sealed boxes with an IB

IB Subwoofer FAQ

Last edited by Thomas-W; 06-26-2014 at 09:46 PM.
Thomas-W is offline  
Reply DIY Speakers and Subs

User Tag List

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


Forum Jump: 

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