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Multiple subs vs. bass traps
Multiple subs vs. bass traps
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Old 23rd December 2015, 03:09 PM   #1
djn is offline djn  United States
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Default Multiple subs vs. bass traps

I'm trying to think through the use of multiple subs vs. using bass traps. Do they do the same thing??? or are they addressing different issues?
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Old 23rd December 2015, 03:41 PM   #2
Thesigma is offline Thesigma  United States
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If we're talking about the same things, Bass traps are an acoustical treatment designed to absorb excess bass in a room, usually caused be room modes in small rooms. The goal being to end up with a flat listening environment, or closer to flat anyway.

What are you trying to achieve? More bass with multiple subs? Or more even response in the room?
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Old 23rd December 2015, 04:35 PM   #3
chris661 is offline chris661  United Kingdom
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By exciting the room more evenly, the multiple distributed subs approach means you ought to end up with a flat LF response anywhere in the room.

I don't know much about LF room treatment, but would guess the aim is similar. I do know that absorbers have to be huge to be effective at LF. Of the two, I'd probably go for multiple subs.

Chris
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Old 24th December 2015, 01:25 AM   #4
TMHutson is offline TMHutson  United States
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I also like the idea of multiple subs. You can do it anywhere. Bass traps can be a pain to build, and may not looks so great. But both together may work really well... I have seen people with room measurements with room treatment, and people with multiple subs. But have not really seen a study on both together.
If I had a place to put my subs and measuring equipment, I would try it...
Well, maybe in 2016 if I am lucky...

Whatever you chose to do, measure and post here.
I will, if I can in the future... Yay, data!
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Old 24th December 2015, 01:35 AM   #5
GM is offline GM  United States
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Same goal, but obviously more distributed speakers = > acoustic efficiency = less power required [active system] whereas bass traps, etc, reduces it to its mean, requiring even more acoustic efficiency, hence power, from the 'sub' system [passive system]; so you may wind up paying even more for the latter plus having a more intrusive size that isn't as easily 'hidden' as several smaller ones.

GM
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Old 24th December 2015, 09:22 PM   #6
djn is offline djn  United States
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Thanks guys. I have 4 sub's no and have absolutely no complaints. I was just wondering if traps did something else.
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Old 27th December 2015, 12:54 PM   #7
djn is offline djn  United States
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Here's a plot for speakers I just for a friend. It shows bad room interaction but they were not muddy at all.
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File Type: jpg 20151225_223322.jpg (1,007.1 KB, 670 views)
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Old 27th December 2015, 12:54 PM   #8
djn is offline djn  United States
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Would traps reduce decay time?
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Old 27th December 2015, 01:00 PM   #9
weltersys is offline weltersys  United States
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Quote:
Originally Posted by djn View Post
Would traps reduce decay time?
Yes, decay time around the frequency they are designed to absorb would be reduced.
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Old 27th December 2015, 06:50 PM   #10
djn is offline djn  United States
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So is it correct to say multiple subwoofers level sub signals around the room and traps reduce decay time?

Are the end results the same?
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