Sorry 500mm more. 3 1/2 to 4ft total distance from the wall
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.
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- 28 posts total
Where the heck did my last response update go? Well, good news. I took the advice here about moving the speakers closer together. I moved them about a foot each side towards the centre and about another 6” forward. Problem solved. Now there’s no difference standing or sitting. Both have the same excellent bass. Powerful, deep and clear. Wife approves! She’s a long term Hi-Fi buddy. I have them towed in towards the seating position and it’s a nice clear focus. I’ll bring another eames style chair in this room shortly. Or an exercise bike! First, thanks to those here who suggested this solution. It worked. I’m grateful. John |
Bass response is one of the craziest things in hifi. Over the years and living in different houses with varying room sizes and volumes I would stubbornly set up my stereo with the same separation distance between the speakers and distance from the front wall. I would notice that the bass would often sound better in the back of the room than in my listening chair. The real head scratcher was when I had great bass while standing and it would all disappear when I sat down. Finally, in desperation I moved my speakers closer together and Bam! I had bass again. The bass response relative to speaker position seems to be a function of bass driver size, room shape and volume. If the drivers are too far apart the nodes rise upward and outward. That is the part I did not visualize- the 3 dimensionality of the bass response until I hit on it. The good thing is, or what I found is that the bass remains the same when moving the speakers closer and closer together once at the sweet spot. So it is possible to attain the largest soundstage possible and have great bass by just finding that sweet spot for the bass. 1 inch or less movement of the speakers makes a difference. |
- 28 posts total