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Old 16-01-2020, 20:09   #1
Raigmore
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Subwoofer placement

I am basing a home cinema system based around the Sony HT ZF9 soundbar plus optional rear speakers got the master bedroom. The subwoofer is front ported and at present I aim to place it on a slot with 50 mm or more breathing space all around and the front surface open and unobstructed. But as there are walls around 3 sides, will this affect its functionality?
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Old 17-01-2020, 07:53   #2
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It's sure to affect the sound, but not necessarily in a bad way. Plus of course you can adjust the crossover and volume to your liking.

There are lots of online guides - The Art of Subwoofer Placement seems good, and if you're really keen to experiment (and have long leads) it includes the 'crawl' technique of testing the sub in your choice of listening position/s ...

Bottom line is to try it.

With my modest setup, I'm set for 5.1 film-watching, but if I use DPL2 or simulated 5.1 with a stereo 2.0 source, the bass output usually needs manually dialling back. (Make sure you can easily access any controls located on the sub itself). I've also read that placing the sub on a rubber (yoga) mat reduces the level of 'boominess' when placed close to walls, but I've not tried that yet.
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Old 18-01-2020, 18:07   #3
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I have been through many on-line subwoofer placement guides and there are times where different experts seem to contradict one another, making the exercise more confusing. About the only thing everyone agrees on is not to place it inside a cabinet.

In my setup, the ported front surface is completely exposed to the room and I can avoid pushing the sub too deep into the cavity so that a bit of the front part is exposed on all sides.
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Old 18-01-2020, 18:38   #4
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That's why you've just got to try it in various positions. Or more simply, place it best for the aesthetics of the room, and adjust everything else accordingly.

With each model of sub being different, and paired with different kit, and every room unique, it's not possible to have give definitive advice.

As an aside, I watched 'Joker' last night - superb film, with an excellent non-flashy soundtrack and a perfectly balanced musical score that seamlessly engaged with the sub.
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Old 19-01-2020, 12:06   #5
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I thought bass was non-directional and it didn't matter where it goes?

I have a small sub with my soundbar and it just sits under the desk with the port facing out.

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Old 19-01-2020, 18:49   #6
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Quote:
Originally Posted by The Bear View Post
I thought bass was non-directional and it didn't matter where it goes?
Yes, but I understand that if there are too many obstructions around it, the bouncing around effect can create a partial bass null.
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Old 19-01-2020, 20:03   #7
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I have it covered on 3 sides, and it makes no difference. Still loud and clear.
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Old 20-01-2020, 07:33   #8
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Yep, mine is covered on 3 sides too - 1 brick wall, 1 plasterboard wall, 1 TV unit.

It even faces the 'wrong' way, cos I don't want kids sticking anything inside the port!
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Old 12-04-2020, 16:25   #9
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Just noticed this thread and am interested in the points raised as am still looking to replace my current, fully wired 5.1 Yamaha system.

The Vizio 5.1.2 recently caught my eye as, despite the rears being wired to the sub some of the YouTube reviews had the sub behind you meaning the wires were easier to hide [ plus the added bonus to 2 up firing speakers ].

Anyone know if rear sub woofer placement is either good or bad? My current sub is directly under the TV but encased in 2 sides but open at the front and back.

Last edited by AdamBrunt; 12-04-2020 at 16:26.
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Old 12-04-2020, 22:06   #10
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Mine is sat behind my TV to the left alongside a chimney breast. So it's covered by two sides. As long as you can't actually detect exactly where the bass is coming from it should be ok. Then it's just a matter of adjusting the volume to your preference.
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Last edited by Bish; 12-04-2020 at 22:08.
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Old 13-04-2020, 08:32   #11
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The "old way" always used to be, put the subwoofer as close to your seating position as possible, then run a repeat of a bass scene you liked (way back when I used to go for Terminator 2 on Laserdisc and either the "skull crunch" or the shot gun firing / reload at the biker bar) and then move around the room, on all fours, until that scene sounds "best"

Then move subwoofer to that location

Over the years since had first "proper" sub (Rel Q100e, so probably 20+ years) I did this a fair few times, however it almost always ended up being to left of TV as I looked at it, just by the speaker, slightly out from the corner, so thats where I now just place them - lifes too short

These days most amps and soundbars have calibrations with microphones, audessey etc. and these are designed to try and make placement as easy as possible

My advice would be, unless it is a dedicated AV room then put it where it is easiest and see how get on

Last edited by dunkle; 13-04-2020 at 11:45.
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