DIY Subwoofer Risers - Page 74 - Blu-ray Forum

Sinner314 · 08-19-2010, 05:02 PM

I have 2 yamaha 12 inch front firing subs I know there far from the higerend subs so I've been thinking of ways to help improve there sound quality and I'm thinking about building a riser and then stacking the subs on top of each other.. what are the opions on stacking subs ? Good? Bad? .....

kareface · 08-19-2010, 09:31 PM

Quote:

Originally Posted by Sinner314

I have 2 yamaha 12 inch front firing subs I know there far from the higerend subs so I've been thinking of ways to help improve there sound quality and I'm thinking about building a riser and then stacking the subs on top of each other.. what are the opions on stacking subs ? Good? Bad? .....

Not great, lol. The likelihood that it'll produce better results is pretty low. If you are looking to improve the subs, positioning and setting their gain with an SPL will do wonders.

BLURAYSONYES · 08-20-2010, 03:14 AM

Heres mine I made a few weeks ago.

Big Daddy · 08-20-2010, 09:37 PM

Quote:

Originally Posted by BLURAYSONYES

Heres mine I made a few weeks ago.

Congratulations.

GAWD · 08-24-2010, 05:26 PM

Finished my second one this past week :

After positioning and EQing here are my results:

kareface · 08-24-2010, 06:14 PM

What degree smoothing is that?

GAWD · 08-24-2010, 06:26 PM

I think it's 1/6th can't remember now. I know it's not 1/1

kareface · 08-24-2010, 08:33 PM

The curve is pretty clean. A little high near the rolloff point, but on the whole I'd say it's good. However, does that include the fronts? Or is that exclusively the subs? Also what do you have your crossover set to?

One thing to note, if you want to present good info about the sub, a waterfall is much better. A simply FR will only give you the initial db level, but really what you're trying to correct when you talk about LFR is decay. You can tell if there's problems with the reproduction by looking at the decay rates and the peaks.

GAWD · 08-25-2010, 04:47 PM

That does not include the fronts.
I'm going to try and get the waterfall pic over the weekend. I saved my last measurements. Subs are crossed over at 80hz. The roll off does seem a little strange.

Without EQ I had problems with dips and peaks at 30 - 40 and 50. Moving the subs around fixed some but needed the EQ in the end. The 20hz I couldn't bring down more than that.

Whether or not it looks good graphed it sounds freaking awesome. Much better than without EQing. I no longer ride the controls with big bass scenes and there is no boominess at all. Music especially heavy bass lines sound "flat" across all the notes. That to me was impressive compared to what it was before.

But I'm all for improvement :-)

kareface · 08-25-2010, 06:48 PM

That's great. Sounds like you found a good placement.

crazyBLUE · 08-28-2010, 02:14 AM

My new sub riser & it is not finished yet ~ There will be carpet under the sub along with foam underneath !

Aerodude73 · 08-28-2010, 02:29 AM

Brent - you're outta' control - that is one Massive "Riser" !!

crazyBLUE · 08-28-2010, 02:35 AM

Quote:

Originally Posted by Aerodude73

Brent - you're outta' control - that is one Massive "Riser" !!

Thanks Aero ~ Yes I am in a good way

kareface · 08-28-2010, 05:24 AM

What are you using to fill the cabinets?

tbizzle · 08-28-2010, 07:05 AM

That's a kickass riser Brent!

crazyBLUE · 08-28-2010, 11:21 AM

Quote:

Originally Posted by kareface

What are you using to fill the cabinets?

Have not decided yet , Have to build the other stand for the surround on the other side first , Then I will finish them for permanent placement .

Quote:

Originally Posted by tbizzle

That's a kickass riser Brent!

Thanks t

bz1080p · 08-28-2010, 11:29 AM

Quote:

Originally Posted by crazyBLUE

Have not decided yet , Have to build the other stand for the surround on the other side first , Then I will finish them for permanent placement .

Thanks t

Good morning Brent, I saw you risers over on the HTT, Beautiful

They really look great

crazyBLUE · 08-28-2010, 11:40 AM

Quote:

Originally Posted by bz1080p

Good morning Brent, I saw you risers over on the HTT, Beautiful

They really look great

Thank You Bill & Good Morning to you

Speed3driver · 09-03-2010, 03:06 AM

Just about done with my sub riser for my my soon to be delivered A5-350, Overall dimensions are .5" more that the actual sub all around. 3/4" MDF board with 1" thick polyfill foam board. I'm not a fan of the carpet on the top so I used some sound deadening rubberized spraypaint in black. The legs are nice sturdy fence post toppers from home depot. It sits just under 6" tall and should do nicely. Still a little painting to do but I am very happy with results so far

crazyBLUE · 09-03-2010, 03:12 AM

Quote:

Originally Posted by Speed3driver

Just about done with my sub riser for my my soon to be delivered A5-350, Overall dimensions are .5" more that the actual sub all around. 3/4" MDF board with 1" thick polyfill foam board. I'm not a fan of the carpet on the top so I used some sound deadening rubberized spraypaint in black. The legs are nice sturdy fence post toppers from home depot. It sits just under 6" tall and should do nicely. Still a little painting to do but I am very happy with results so far

It looks great speed !

Vary nice & original ~ Great idea with the fence post tops !

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08-19-2010, 05:02 PM	#1461
Sinner314 Junior Member Member since:Jul 2010 Location:St. louis MO Blu-ray collection:19	I have 2 yamaha 12 inch front firing subs I know there far from the higerend subs so I've been thinking of ways to help improve there sound quality and I'm thinking about building a riser and then stacking the subs on top of each other.. what are the opions on stacking subs ? Good? Bad? .....

08-20-2010, 03:14 AM	#1463
BLURAYSONYES Banned Member since:May 2007 Location:Irvine, CA Blu-ray collection:157	Heres mine I made a few weeks ago.

08-24-2010, 05:26 PM	#1465
GAWD Special Member Member since:Oct 2009 Location:Canada Trading Score:16	Finished my second one this past week : After positioning and EQing here are my results:

08-24-2010, 06:14 PM	#1466
kareface Senior Member Top ranked HT gallery Member since:Jul 2009 Location:Seattle, Wa Home Theater Gallery:159 Trading Score:1	What degree smoothing is that?

08-24-2010, 06:26 PM	#1467
GAWD Special Member Member since:Oct 2009 Location:Canada Trading Score:16	I think it's 1/6th can't remember now. I know it's not 1/1

08-24-2010, 08:33 PM	#1468
kareface Senior Member Top ranked HT gallery Member since:Jul 2009 Location:Seattle, Wa Home Theater Gallery:159 Trading Score:1	The curve is pretty clean. A little high near the rolloff point, but on the whole I'd say it's good. However, does that include the fronts? Or is that exclusively the subs? Also what do you have your crossover set to? One thing to note, if you want to present good info about the sub, a waterfall is much better. A simply FR will only give you the initial db level, but really what you're trying to correct when you talk about LFR is decay. You can tell if there's problems with the reproduction by looking at the decay rates and the peaks.

08-25-2010, 04:47 PM	#1469
GAWD Special Member Member since:Oct 2009 Location:Canada Trading Score:16	That does not include the fronts. I'm going to try and get the waterfall pic over the weekend. I saved my last measurements. Subs are crossed over at 80hz. The roll off does seem a little strange. Without EQ I had problems with dips and peaks at 30 - 40 and 50. Moving the subs around fixed some but needed the EQ in the end. The 20hz I couldn't bring down more than that. Whether or not it looks good graphed it sounds freaking awesome. Much better than without EQing. I no longer ride the controls with big bass scenes and there is no boominess at all. Music especially heavy bass lines sound "flat" across all the notes. That to me was impressive compared to what it was before. But I'm all for improvement :-)

08-25-2010, 06:48 PM	#1470
kareface Senior Member Top ranked HT gallery Member since:Jul 2009 Location:Seattle, Wa Home Theater Gallery:159 Trading Score:1	That's great. Sounds like you found a good placement.

08-28-2010, 02:14 AM	#1471
crazyBLUE Moderator Top ranked HT gallery Top contributor Member since:Aug 2008 Location:Pacific Northwest Home Theater Gallery:89 Blu-ray collection:479 DVD collection:1 Blu-ray reviews: 38 Trading Score:30	My new sub riser & it is not finished yet ~ There will be carpet under the sub along with foam underneath !

08-28-2010, 02:29 AM	#1472
Aerodude73 Blu-ray Archduke Member since:Oct 2008 Location:Middletown, RI (MEMBER OF THE "ECPP")™ Home Theater Gallery:134 4K collection:428 Blu-ray collection:2499 DVD collection:7 Digital collection:3 Blu-ray reviews:9 Trading Score:31	Brent - you're outta' control - that is one Massive "Riser" !!

08-28-2010, 05:24 AM	#1474
kareface Senior Member Top ranked HT gallery Member since:Jul 2009 Location:Seattle, Wa Home Theater Gallery:159 Trading Score:1	What are you using to fill the cabinets?

08-28-2010, 07:05 AM	#1475
tbizzle Blu-ray Ninja Top ranked HT gallery Member since:Oct 2008 Location:Folsom, CA Home Theater Gallery:61 4K collection:47 Blu-ray collection:571 Trading Score:55	That's a kickass riser Brent!

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