2. speakers
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Bass only when I stand up…

Weird experience.

Wired up my system and sit down in my office chair. The bass disappeared. Stand up, and alakazam, the bass is back full and wonderful. It’s like swimming in the sea, there are horizontal layers of different temperatures. Quite distinct.

Ok, system info:

Speakers - PMC MB2SE

Power amp - Marantz 8807

Preamp - Marantz 8005

Sources - Pioneer LX800 or N70ae

Room - carpeted, 4.27x5.5x2.75m, acoustic insulated plasterboard and timber frame

Shape? Left side where door is, has duct risers that create 800mm boxes either side of the door. I’ve tried attaching a photo but didn’t work. Try here: link

Speakers placed 600mm out from the 4.27 wall, with the opposite wall being a library and office desk.

Tried? Raising front and rear speaker stands 1” to point speakers up or down slightly with no effect.

I welcome ideas 💡 yet realize there are constraints here too.

128x128johnread57
terry9
2,333 posts
 

I had the same issue, but solved it with 2 auxiliary bass panels, DWM from Magnepan. YMMV

mofojo
2,291 posts
 

Bass is more non directional. When you stand up the mids and highs are going to be potentially much less. Think that could have anything to do with less perceived bass from standing? 

timlub
2,039 posts
 

The quickest way, not the only way. Some of the suggestions will help. First pull your speakers out from the wall. At least 500mm, next add subwoofers. If it's not in the budget pick up 2 used woofers for the time being. As you know bass is non directional, adding more fills the nodes in the room and helps equalize the bass in the entire room. It isn't about getting more bass,  you are simply filling the nodes in the room. You may have to turn them very low to help from disrupting your main speakers, but it will work. Good luck, Tim

 

timlub
2,039 posts
 

Sorry 500mm more. 3 1/2 to 4ft total distance from the wall

riie
219 posts
 

Just get a booster chair 

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