Worth it to Install new floating sub floor solely for tactical Sub Bass feeling? - AVS Forum
Forum Jump: 
 
Thread Tools
post #1 of 8 Old 06-06-2007, 09:52 AM - Thread Starter
AVS Special Member
 
John Ballentine's Avatar
 
Join Date: Nov 2003
Location: Los Angeles, Ca.
Posts: 5,084
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I'm thinking of removing my carpet/pad (over concrete floor) and installing a floating plywood sub floor. This would be solely for the purpose of possibly obtaining back that tactical sub-bass feeling I had previously when my theater was located in an upstairs room where the floor was ¾" plywood on joists.

Problem:
I only have 1" height to work with. I'm thinking of using ¼" rubber isolation pads and one layer of ¾" T&G AC plywood. With the carpet reinstalled on top.

Or would I be better off using 2 sheets of 3/8" AC plywood ? I could use construction adhesive and 5/8" drywall screws to sandwich the sheets together - staggering the joints w/ the second layer. But would this "feel" stable under foot? Would it generate the effect I'm looking for?

Any other ideas?

Thank you for your time!
John Ballentine is offline  
Sponsored Links
Advertisement
 
post #2 of 8 Old 06-06-2007, 09:55 AM
Advanced Member
 
drin's Avatar
 
Join Date: Aug 2006
Posts: 527
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Why not just put buttkickers in your chairs? Nice tactile feeling, FAR less work...

-drin

Resident curmudgeon
drin is offline  
post #3 of 8 Old 06-06-2007, 10:05 AM - Thread Starter
AVS Special Member
 
John Ballentine's Avatar
 
Join Date: Nov 2003
Location: Los Angeles, Ca.
Posts: 5,084
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by drin View Post

Why not just put buttkickers in your chairs? Nice tactile feeling, FAR less work...

-drin

I do have buttkickers in each of my chairs (Berkline 090). They work great - but they just don't give me the "feeling" I'm looking for. Hard to describe.

But your right - adding a sub-floor is a tremendous amount of work and expense. And I want to make darn sure it will work out for me before I proceed.
John Ballentine is offline  
post #4 of 8 Old 06-06-2007, 10:14 AM
AVS Special Member
 
Plasma George's Avatar
 
Join Date: Dec 2002
Location: Fighting City of Philadelphia
Posts: 1,719
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
You have 1" or 1' ? to work with ?

Search "Thunder Deck", and you'll see my thread...(I'm going to update it soon cause I drywalled) I did a 2x10 subfloor for just this reason, a 10" and a 12" enclosure built between the studs to perfect volumes.
I can't wait to hear the Millenium Falcon flying overhead !

"Welcome To The Thunder Deck" our $6k theater/media room, 100% DIY

There are 2 types of people in this world - home theater enthusiasts and idiots
Plasma George is offline  
post #5 of 8 Old 06-06-2007, 10:40 AM
AVS Special Member
 
McCall's Avatar
 
Join Date: Jul 2006
Posts: 3,084
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 12
Do you have a riser? I read a thread here somewhere about putting a second sub on the riser for that purpose and I tried it. And it is fantastic. That would probably be a good way to go, though. I have Bass shakers also in the riser and on the mounting plate of the front row which is mounted to a board to which the front row seats are mounted on the floor. Actual Floor is concrete covered with underlayment.

McCall
-----------------------------------------------------------------
Yup that really IS me in the avatar.
http://www.avsforum.com/avs-vb/showt...he+Mickelodeon
McCall is offline  
post #6 of 8 Old 06-07-2007, 11:17 AM - Thread Starter
AVS Special Member
 
John Ballentine's Avatar
 
Join Date: Nov 2003
Location: Los Angeles, Ca.
Posts: 5,084
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Yes - I may bolt a second sub to the riser to help out row #2. But that will do nothing for my first row. So I'm gonna plan to go ahead and do the double 3/8" plywood on 1/4" isolation pads. (Even though my wife is gonna think I've lost it when she sees me tearing up the freshly laid carpet!)
John Ballentine is offline  
post #7 of 8 Old 06-07-2007, 11:36 AM
AVS Special Member
 
Plasma George's Avatar
 
Join Date: Dec 2002
Location: Fighting City of Philadelphia
Posts: 1,719
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I don't see you getting much improvement with a 1" space between the new floor and concrete.
I'm doing 2x10s, so what vibration you feel in the explosions is big volumes created by the joist spacing....you're not going to have that.

You're gonna get a rumbling effect of a 1" deep enclusure ???

"Welcome To The Thunder Deck" our $6k theater/media room, 100% DIY

There are 2 types of people in this world - home theater enthusiasts and idiots
Plasma George is offline  
post #8 of 8 Old 06-08-2007, 10:02 AM - Thread Starter
AVS Special Member
 
John Ballentine's Avatar
 
Join Date: Nov 2003
Location: Los Angeles, Ca.
Posts: 5,084
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I'm thinking the Bass frequencies will travel through the plywood energizing the chairs that are sitting on top. The floating floor will also isolate the floor from the walls. Subs will be putting all their Bass energy into the new plywood floor/chairs - instead of into the concrete floor/walls. Has nothing to do w/ volumes created by joist spacing. But I know what you are saying. I may do a mock-up test and place some (sandwiched double 3/8") plywood on top of my carpet w/ the sub sitting on one end and a chair sitting on the other end - and see what I see. Before going to the trouble of tearing out my carpet. (or am I thinking like a crazy man?)
John Ballentine is offline  
Reply Dedicated Theater Design & Construction

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