3db
Audioholic Slumlord
Please don't shoot the messenger of this post, me!!! I've just read in another forum that raising the sub 25% of ceiling height improves bass SQ to reduce reflections off the ceilings. Is there any truth to this?
I can see the obit now:I've never experimented with trying to build risers for my 100# Subs.
Brother, it just went from rabbit hole to worm hole!!!!!I've seen this mentioned in several places, too. It is absolutely about where the source of the wavefront is located and the interaction with the different room modes.
As to efficacy, I've never experimented with trying to build risers for my 100# Subs.
Based on my intermediate understanding of room acoustics, it passes the sniff test IMO. (Compared to things like replacing power cables and cr@p like that. )
Anyway, one YT video I stumbled on had the guy advocating for three subs at different heights and room locations in a reasonably spaced HT build. *shrugs
Might be fun to try. But consider how much difficulty people have setting up just 2 Subs in 2-dimmensional space! Add that vertical dimmension and watch the Rabbit Hole really deepen!
I am seeing IB in your future..... hopefully not ICU lol!!!I found it!
One of the sources I had seen, at least.
Some of his stuff is interesting. I like that he won't consult on a room unless it has something like 14' ceilings. Everything else is too low for decent acoustics, according to him. *shrugsIdeal Subwoofer Placement & Pressurization – Acoustic Fields
Today we're going to talk about subwoofer placement and pressurization because a subwoofer is really a pressurization device...www.acousticfields.com
Anyway... I'm intrigued, and believe me when I say I have thought about the logistical feet of getting a 100# sub up into the loft in my room... but no. Now maybe if I switch these out and put DIY subs in my room... *scratches chin thoughtfully
Anyway.... Two subs on the floor. Sloped Clerestory Ceiling helps with some of those modes! That's it.
If this were true, you would see folks like Dr Hsu, Rythmik Brian, Danny Richie, etc ask you to suspend their subs in mid air eh? I haven't heard such things from any of those guysPlease don't shoot the messenger of this post, me!!! I've just read in another forum that raising the sub 25% of ceiling height improves bass SQ to reduce reflections off the ceilings. Is there any truth to this?
The best smoothve can only be obtained from a 15 inch sub if you raise it off the floor, seat it kindly on your lap and look directly into it. There is a undescribable smoothve (nirvana) in such a optimized listening scenario....smoothve bass...smoothve bass....smoothvee...it starts to sound even smoothver if you pat that sub gently.I can see the obit now:
"He was a kind person, a generous person, and one who enjoyed high quality music reproduction. Alas, it was his pursuit of smooth modal response that brought about his demise when he was tragically crushed while trying to mount a large subwoofer 4' off the floor..."
That they do not, does not make the concept any less valid as a hypothesis for treating In-Room Low Frequency Acoustics.If this were true, you would see folks like Dr Hsu, Rythmik Brian, Danny Richie, etc ask you to suspend their subs in mid air eh? I haven't heard such things from any of those guys
I wonder what would happen if you were to design a room with IB subs mounted at a Golden Mean point on each surface, perhaps excluding the floor....I am seeing IB in your future..... hopefully not ICU lol!!!
True. But I think the point wasHowever, you can see what stacked subs have done in the AH setup as well as various setups by Mark Seaton and others....
That may qualify you for Audioholic Jedi. But only if you do it through force of will alone. Bungee cables don't count.Do i need to suspend subs in mid air?
I was thinking more of vertical room modes vs horizontal room modes from sub positioning....True. But I think the point was
co-location more than raising one off the floor.