Re: Thoughts on multiple subwoofer placement
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Joined: Oct 2006
Posts: 280
local
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local
Joined: Oct 2006
Posts: 280 |
Hi CV,
I was skeptical about having two subs providing a better FR across the different seats in our HT room. That skepticism quickly disappeared when my second EP500 arrived. I placed both subs under the projector screen, on either side of the center channel and about the same distance from it as from the M80s (same look as in dllewel's room that is on the main Axiom page). I simply used the frequency sweep from the SMS-1 and it was immediately obvious that the peaks and troughs were much less pronounced compared to the situation with the single sub. The FR curve looks virtually flat with this placement in our rectangular attic room with insloping side walls. I just kept this arrangement rather than moving the subs to mid walls. I think this is also Jason's advise above; simply place them where they seem to be conveniently placed and start from there. In my situation, it worked out very well. Good luck.
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Re: Thoughts on multiple subwoofer placement
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Joined: Jul 2006
Posts: 12,077 Likes: 7
Founder, Axiom Upgrade Club shareholder in the making
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OP
Founder, Axiom Upgrade Club shareholder in the making
Joined: Jul 2006
Posts: 12,077 Likes: 7 |
I appreciate the feedback, guys. Mid-wall on the sides is actually very convenient. The side walls are where I have space to play with. I don't think I can actually fit one on the front or rear wall.
I'll have to see about REW. I don't have a laptop, but my computer is in the next room. Would it be possible to use it that way, going back and forth between rooms?
I'm not sure how much effort I want to go to in my current room, but it would be nice to get my feet wet for when I do move my system.
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Re: Thoughts on multiple subwoofer placement
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Joined: Dec 2003
Posts: 10,420
shareholder in the making
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shareholder in the making
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The computer in the other isn't a problem. I am doing the same thing, you just need long enough RCA cables to reach the receiver from your PC for the signals to be sent; if you want to use the signal generator in REW, which is the most convenient way with the PC in another room. I have found my onboard sound card is very lacking in the lower frequencies as well as the higher ones, it drops off substantially below 70 and above 12khz. I have just bought this external card so I can use our laptop and take it along with me to help set up other Ht systems as well. I will let you know how it works out, hopefully later tonight.
Jason M80 v2 VP160 v3 QS8 v2 PB13 Ultra Denon 3808 Samsung 85" Q70
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Re: Thoughts on multiple subwoofer placement
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Joined: Jul 2006
Posts: 12,077 Likes: 7
Founder, Axiom Upgrade Club shareholder in the making
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OP
Founder, Axiom Upgrade Club shareholder in the making
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Posts: 12,077 Likes: 7 |
That would be great. It looks like it could be a decent, affordable solution.
I'm not sure if I have two RCA cables that long or not. I know I have at least one.
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Re: Thoughts on multiple subwoofer placement
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Joined: Dec 2003
Posts: 10,420
shareholder in the making
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shareholder in the making
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You only need one then a Y splitter to feed the left and right as it is a mono signal any way.
Jason M80 v2 VP160 v3 QS8 v2 PB13 Ultra Denon 3808 Samsung 85" Q70
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Re: Thoughts on multiple subwoofer placement
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Joined: Jan 2008
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devotee
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devotee
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Re: Thoughts on multiple subwoofer placement
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Joined: May 2002
Posts: 10,654
shareholder in the making
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shareholder in the making
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Charles, since you have Dr. Toole's new book you'll probably get more good info from that, especially Chapter 13, "Delivering Good Bass in Small Rooms" from about pp.222-236, than we can offer. Yes, as he points out, the positioning of two or more subs at opposite mid-wall locations is most effective in rectangular rooms without large openings to other connecting areas. In other situations he emphasizes that taking measurements and then following with corrective electronic room equalization will give better total results than simply following basic placement suggestions automatically as a complete solution. So, those who have either separate room equalization equipment or built-in processing such as Audyssey MultEQ which equalizes subs should also experiment with that, using various sub locations.
-----------------------------------
Enjoy the music, not the equipment.
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Re: Thoughts on multiple subwoofer placement
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Joined: Jul 2006
Posts: 12,077 Likes: 7
Founder, Axiom Upgrade Club shareholder in the making
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OP
Founder, Axiom Upgrade Club shareholder in the making
Joined: Jul 2006
Posts: 12,077 Likes: 7 |
You remembered that I have the book. Now if only I had remembered. I will definitely have to get some use out of it. I'll have to throw Audyssey back into the mix when I'm playing around with everything. Thanks, John.
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Re: Thoughts on multiple subwoofer placement
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Joined: May 2003
Posts: 18,044
shareholder in the making
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shareholder in the making
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Those things are freaky as hell. I hate those ads. Wait, I hate all ads. Praise be to TiVo!
I am the Doctor, and THIS... is my SPOON!
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Re: Thoughts on multiple subwoofer placement
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Joined: Oct 2008
Posts: 44
buff
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buff
Joined: Oct 2008
Posts: 44 |
That would be great. It looks like it could be a decent, affordable solution.
I'm not sure if I have two RCA cables that long or not. I know I have at least one. I had the cable problem until I bought these. http://www.hsuresearch.com/products/uls15dualdrive.htmlWireless subs. They sound awesome. I only have 2 but you could add as many as you want.
One day your life may flash before your eyes, try to make it worth watching
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