Lack of bass in one area - I am only asking why

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riffwraith
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Posts: 2
Joined: Wed, 2023-Apr-05, 19:11
Location: USA

Lack of bass in one area - I am only asking why

#1

Postby riffwraith » Thu, 2023-Apr-06, 21:13

Hi everyone :)

FPLan1b.jpg


That's the first floor of my townhouse. It's a HW floor supported by joists, and the basement is underneath. The pic is not exactly to scale, but close enough.

I have a Conrad Johnson pre, an old B&K power amp, and B&W speakers:

http://www.hifi-review.com/151906-b-w-dm605-s2.html

I have a good amount of low end from this system, which is audible everywhere in the space, including areas: X1-4, and Z1&2

When I move into the area depicted by Y1&2, the low end all but disappears. I think this is considered a null?

The Q is why does this decrease in low end happen in that area? Not that I am looking to do anything to fix it; I am not, as there is no need. I am simply curious about the science behind what is going on here.

Thanks in advance.



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gullfo
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Joined: Fri, 2021-Jun-25, 14:50
Location: Panama City Beach, FL USA

Lack of bass in one area - I am only asking why

#2

Postby gullfo » Fri, 2023-Apr-07, 13:31

two things - one, the large opening is allowing the LF energy to leave the space, and two - the two short walls are likely creating a null between them for a very small range of frequencies which are likely the LMF frequencies.



riffwraith
New Member
Posts: 2
Joined: Wed, 2023-Apr-05, 19:11
Location: USA

Lack of bass in one area - I am only asking why

#3

Postby riffwraith » Sat, 2023-Apr-08, 11:09

Cool - thx




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