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Is This Sub Powerful Enough For This Room?

I will be receiving my Velodyne DD-18 sub next week. I see a lot of people here using 2 subs. The Sub will be for home theater only. The sub has the room-correcting software and all that latest stuff.

I will be running a pair of Infinity Kappa 9 speakers full range for the rears. I will be using a pair of Infinity Kappa 7 speakers laid horizontally for the center channel.

My front speakers will be a set of Infinity IRS Beta.

Powering the front speakers will be two pair of Pass Labs X-600 monoblocs. Powering the rears and center channels will be Carver Silver 9t monoblocs for each speaker.

My processor is a Sunfire Theater Grand II.

The room is 70 ft long and 22 ft wide with a 20 foot ceiling. The speakers will be positioned on the long wall.

The front speakers have a total of eight 12" woofers and the rears have two 12" woofers each.

I have run a home theater setup in the past with the Kappa 9's as the front speakers and the Kappa 7 as the rears and no sub in this same room with good results. However in the past, I'd always feared the for the health of my woofers with the onlslaught of bass that some movies have and I don't want to submit my Betas to that kind of stress.

I'm wondering if the DD-18 has the testicular fortitude to provide enough bass for a room this size.

Click on this link to MyRoom
see my room. Click "slideshow" to view the photos.

thanks......mitch
128x128mitch4t
tafka_steve
115 posts
 
Your huge room has roughly 10 times the volume of a medium-sized room. If you need something that plays bass louder than the DD18, consider the Servodrive Contrabass (http://www.servodrive.com/contrabass.html) or bass horns like the Labhorn or Bruce Edgar's Titan.
narrod
1,064 posts
 
Well, I think you're going to need something pretty big to load that room properly. My first recommendation would be the Wilson Watchdog...maybe two.

Good luck,

Wendell
audiooracle
387 posts
 
You defiantly need two for the room volume you have. Bass output fall off 3db for every 6 feet of space away from the speakers.

Secondly you need even bigger front speakers realistically.

Thirdly you need room correction and or acoustic tunning a room this big and as apparently as empty will suffer from slap echo, and have all sorts of nulls and peaks.

Fouthly you should have someone measure your room and help you set up your system correctly, no matter how much you
ve spent on equipment the room is the dediciding factor.

I am a tweenty year industry veteran. What state do you live in? If you are close I will come and see you.
flrnlamb
508 posts
 
Yeah, what Audiooracle said...
mitch4t's avatar
mitch4t OP
1,602 posts
 
Bigger front speakers are out of the question. I think I have big enough already...the Betas are a 4-chassis system and will take up twice as much real estate in my room as what you see in the current photos.

For two channel listening, the Kappa 9's were not overwhelmed by the size of this room. They more than held their own in that regard. The Betas came available locally and I could not pass them up and now the Kappa 9's will be moved to the rear.

I will be sitting across the room approx 15 feet from the front speakers(they will be five or six feet out from the wall.) The sub can be positioned along the same wall as the front speakers just outside of the right front speaker aprox 3 feet out from the wall.

I live in Los Angeles.
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