DIY Subwoofer Risers

[TKNice]

Originally Posted by Big Daddy

It is up to you. I have wood floor in my house and I generally prefer to put my subs on area rug. I built 5 risers for my subwoofers and they all have carpet on top of them. The cost is so minimal that it makes sense to use it. For one of them, I bought door mats from Home Depot for $3.50 each and used it it. The mats had carpet on top and rubber in the bottom. I used spray glue to attach them.

Okay, thanks. yeah my sub is currently on thin carpet so we'll see.

Any thoughts on height? Are 2x4s + the MDF thickness good enough?

[Big Daddy]

Originally Posted by TKNice

Okay, thanks. yeah my sub is currently on thin carpet so we'll see.

Any thoughts on height? Are 2x4s + the MDF thickness good enough?

You can go from a few inches up to a couple of feet. Read post #2 for explanation.

[abc5]

can i ask you folks something... basically the idea here is that the gramma / subdude stuff doesn't have enough material for the price to raise your sub high enough off the ground?

[Big Daddy]

Originally Posted by abc5

can i ask you folks something... basically the idea here is that the gramma / subdude stuff doesn't have enough material for the price to raise your sub high enough off the ground?

Yes, you can build one yourself for a lot cheaper.

[crazyBLUE]

Originally Posted by abc5

can i ask you folks something... basically the idea here is that the gramma / subdude stuff doesn't have enough material for the price to raise your sub high enough off the ground?

I would say that is one way too look at it abc5 . I have had all my subs in different places & at different heights & the higher up the better they sound IMO.

[tbizzle]

Originally Posted by abc5

can i ask you folks something... basically the idea here is that the gramma / subdude stuff doesn't have enough material for the price to raise your sub high enough off the ground?

Well the Gramma and Subdude are more of an isolation pad than a riser. Just getting the sub off the ground is a good thing, but if they raised the sub off the ground a lot higher, than they would be much more effective in interacting with the room modes

[abc5]

Originally Posted by tbizzle

Well the Gramma and Subdude are more of an isolation pad than a riser. Just getting the sub off the ground is a good thing, but if they raised the sub off the ground a lot higher, than they would be much more effective in interacting with the room modes

ah, now i get it more, thanks for driving it specifically.

this does pose a new situation for me... i was going to get a gramma, put my Hsu on it, then slide both underneath a audio rack i was going to buy that had an open bottom, (and not install the lowest shelf)....

if i rise the sub up substantially i cant get away w/ this.

is a down firing sub to be risen differently?

[Big Daddy]

Originally Posted by abc5

ah, now i get it more, thanks for driving it specifically.

this does pose a new situation for me... i was going to get a gramma, put my Hsu on it, then slide both underneath a audio rack i was going to buy that had an open bottom, (and not install the lowest shelf)....

if i rise the sub up substantially i cant get away w/ this.

is a down firing sub to be risen differently?

Read posts #2 about the reasons for raising a sub. I have two modified down-firing subs, and 4 front-firing (3 of them are DIY) subs. I have built risers for all of them.

[abc5]

Originally Posted by Big Daddy

Read posts #2 about the reasons for raising a sub. I have two modified down-firing subs, and 4 front-firing (3 of them are DIY) subs. I have built risers for all of them.

i see... so what determines how much to rise a sub by?

[Fors*]

Originally Posted by abc5

i see... so what determines how much to rise a sub by?

Go back to post #1 from Big Daddy....he answers that question towards the bottom of the original post.

https://forum.blu-ray.com/subwoofers...er-risers.html

[abc5]

Originally Posted by Fors*

Go back to post #1 from Big Daddy....he answers that question towards the bottom of the original post.

https://forum.blu-ray.com/subwoofers...er-risers.html

thankyou, i missed this info:
How High a Riser?

Theoretically, if your ceiling is 8ft high, you can go up to 2 feet. However, when you raise it that high, you should really fill the gap under the riser with dampening foam. Take a look at these SubTraps from ASC.


darn, i have 12foot ceiling. i could raise my hsu vtf2mk3 up to 3 feet max?

[Big Daddy]

Originally Posted by abc5

thankyou, i missed this info:
How High a Riser?

Theoretically, if your ceiling is 8ft high, you can go up to 2 feet. However, when you raise it that high, you should really fill the gap under the riser with dampening foam. Take a look at these SubTraps from ASC.


darn, i have 12foot ceiling. i could raise my hsu vtf2mk3 up to 3 feet max?

Post #2 explains the theory behind raising a subwoofer.

About a foot is more than enough. You can hang your subwoofers from the ceiling, but do it at your own risk. The WAF is waiting. Don't worry, I will come visit you in the hospital.

[crazyBLUE]

Originally Posted by Big Daddy

Post #2 explains the theory behind raising a subwoofer.

About a foot is more than enough. You can hang your subwoofers from the ceiling, but do it at your own risk. The WAF is waiting. Don't worry, I will come visit you in the hospital.

Please excuse my ignorance but what is WAF

So I see you are still trying to get someone to hang their sub from the ceiling

I have one raised 14" & one at 19" & one at 28 " ~ Is that a bad thing

[Big Daddy]

Originally Posted by crazyBLUE

Please excuse my ignorance but what is WAF

So I see you are still trying to get someone to hang their sub from the ceiling

I have one raised 14" & one at 19" & one at 28 " ~ Is that a bad thing

WAF = Something you don't have to worry about. You freed yourself from WAF considerations a long time ago.

One of these days, I am going to hang a very heavy subwoofer from the ceiling. Hopefully, others will learn from my courage and follow my intiative. We can start a new thread on the benefits of hanging subwoofers from the ceiling.

[Aerodude73]

Originally Posted by crazyBLUE

Please excuse my ignorance but what is WAF

So I see you are still trying to get someone to hang their sub from the ceiling

I have one raised 14" & one at 19" & one at 28 " ~ Is that a bad thing

WAF - Wife Approval Factor.

[HAMP]

Originally Posted by crazyBLUE

Please excuse my ignorance but what is WAF

Did someone

Originally Posted by Big Daddy

WAF = Something you don't have to worry about. You freed yourself from WAF considerations a long time ago.

OMG!!!

Originally Posted by Aerodude73

WAF - Wife Approval Factor.

The answer

[Big Daddy]

Originally Posted by Aerodude73

WAF - Wife Approval Factor.

I disagree with you. crazyBlue is from Portland, OR. The only WAF that applies to him is World Action Foundation.

• WAF: We Are Family
• WAF: Weekend A Firenze
• WAF: Wife Acceptance Factor (stereos/gadgets)
• WAF: We Are the Future
• WAF: Wife Approval Factor
• WAF: Water Accommodated Fraction
• WAF: Weapons Analysis Facility
• WAF: World Apostolate of Fatima (Catholic organization)
• WAF: With All Faults
• WAF: Workfolder Application Facility
• WAF: Women's Acceptance Factor
• WAF: Wall Attenuation Factor (wireless signal strength)
• WAF: World Allergy Forum
• WAF: World Action Foundation (Portland, OR)
• WAF: Wireless Adaptation Framework
• WAF: Windows Access Facility
• WAF: Wesleyan Annual Fund
• WAF: What a Freak (Internet slang)
• WAF: Western Advertising Federation
• WAF: Wavelet Analysis Filter
• WAF: Watershed Assessment Framework (various organizations)
• WAF: Werkhuizen August Firlefyn (Kruibeke, Belgium)
• WAF: Work Authorization Form
• WAF: World Agricultural Forum
• WAF: World AIDS Foundation
• WAF: Wireless Application Framework
• WAF: Women Against Fundamentalism
• WAF: Women in the Air Force (USAF; obsolete)
• WAF: Women's Action Forum
• WAF: Women's Addiction Foundation
• WAF: Women's Aid Federation of England (UK)
• WAF: Warendorf
• WAF: Weather and Forecasting
• WAF: Web and Film (festival)
• WAF: Web Application Firewall (IT security)
• WAF: Web Application Framework
• WAF: Welsh Automotive Forum
• WAF: What A Friend (We Have in Jesus)
• WAF: Wide Area File

EDIT:
Aerodude73 & HAMP,

I guess you missed the whole point of crazyBlue's post. He knows the meaning of WAF. He was just being funny and sarcastic. So I gave him a funny and sarcastic response. He has been playing the WAF joke on me before.

[crazyBLUE]

Originally Posted by Big Daddy

I disagree with you. crazyBlue is from Portland, OR. The only WAF that applies to him is World Action Foundation.

• WAF: We Are Family
• WAF: Weekend A Firenze
• WAF: Wife Acceptance Factor (stereos/gadgets)
• WAF: We Are the Future
• WAF: Wife Approval Factor
• WAF: Water Accommodated Fraction
• WAF: Weapons Analysis Facility
• WAF: World Apostolate of Fatima (Catholic organization)
• WAF: With All Faults
• WAF: Workfolder Application Facility
• WAF: Women's Acceptance Factor
• WAF: Wall Attenuation Factor (wireless signal strength)
• WAF: World Allergy Forum
• WAF: World Action Foundation (Portland, OR)
• WAF: Wireless Adaptation Framework
• WAF: Windows Access Facility
• WAF: Wesleyan Annual Fund
• WAF: What a Freak (Internet slang)
• WAF: Western Advertising Federation
• WAF: Wavelet Analysis Filter
• WAF: Watershed Assessment Framework (various organizations)
• WAF: Werkhuizen August Firlefyn (Kruibeke, Belgium)
• WAF: Work Authorization Form
• WAF: World Agricultural Forum
• WAF: World AIDS Foundation
• WAF: Wireless Application Framework
• WAF: Women Against Fundamentalism
• WAF: Women in the Air Force (USAF; obsolete)
• WAF: Women's Action Forum
• WAF: Women's Addiction Foundation
• WAF: Women's Aid Federation of England (UK)
• WAF: Warendorf
• WAF: Weather and Forecasting
• WAF: Web and Film (festival)
• WAF: Web Application Firewall (IT security)
• WAF: Web Application Framework
• WAF: Welsh Automotive Forum
• WAF: What A Friend (We Have in Jesus)
• WAF: Wide Area File

EDIT:
Aerodude73 & HAMP,

I guess you missed the whole point of crazyBlue's post. He knows the meaning of WAF. He was just being funny and sarcastic. So I gave him a funny and sarcastic response. He has been playing the WAF joke on me before.

Never

That is a lot of WAF

[abc5]

so back to the questions

does a riser platform need to be built, or just find 4 posts that can serve as 4 legs as long as they can be screwed into the bottom of the sub, acting like 4 long spikes? i'm seeing pics of a custom riser, plus long pegs on the sub replacing standard spikes...are both necessary?

[abc5]

Originally Posted by Big Daddy

DK,

Buy some foam from Wal-Mart and attach it with spray glue under the riser and cover it with carpet. It will dampen the riser better. For the ED sub, if you attack longer legs to the subwoofer, you may get better results. Look at the 4 inch legs I attached to my round Hsu subwoofers in Post #2. The difference in sound quality was noticeable.

i have a question about this... if some foam or acoustic foam will help the riser due better dampening, would the foam be better off instead of being underneath the mdf/plywood platform as i've seen, be placed on top of the platform, then carpeted or whatever....

it would make the top more spongy, but they sell high density foam that's really firm... and you can put those coins at the bottom of each of your sub spikes so the spikes dont punch through over time.