Great idea, Thorsten, i will try that. The shades i am using reduce treble and reflect the sound back to the main speaker so this is an acoustic delay and equalizer. I found the position and shape by using my hands to shade them. Today i set up something different. Before i publish it, i have to test more.
Here, Intensity stereophony explained with hard core math (see page 11 onwards):
http://tnw.home.tudelft.nl/fileadmin/Faculteit/TNW/Over_de_faculteit/Afdelingen/Imaging_Science_and_Technology/Research/Research_Groups/Acoustical_Imaging_and_Sound_Control/Publications/Ph.D._thesis/doc/Edwin_Verheijen_19980119.PDF
Pure amplitude differences of the stereo signal is transformed into low freq ITD at the listening position due to locally formed plane wave in the interference field where the angle of incidence being a function of the stereo channel amplitude difference.
PS. check also page 16, Time based stereophony.
- Elias
http://tnw.home.tudelft.nl/fileadmin/Faculteit/TNW/Over_de_faculteit/Afdelingen/Imaging_Science_and_Technology/Research/Research_Groups/Acoustical_Imaging_and_Sound_Control/Publications/Ph.D._thesis/doc/Edwin_Verheijen_19980119.PDF
Pure amplitude differences of the stereo signal is transformed into low freq ITD at the listening position due to locally formed plane wave in the interference field where the angle of incidence being a function of the stereo channel amplitude difference.
PS. check also page 16, Time based stereophony.
- Elias
Markus, what are the absorption/diffuser thingies you have on top of the Nathans? Are they some exotic material?
Hi,
Don't let all secrets out! ;-)
So, Geddes Nathan and some Sub's? Any comments on the Sub's? Electronics.
BTW, I do think this is not a bad approach, but vertical dis[persion is too wide...
Ciao T
Don't let all secrets out! ;-)
So, Geddes Nathan and some Sub's? Any comments on the Sub's? Electronics.
BTW, I do think this is not a bad approach, but vertical dis[persion is too wide...
Ciao T
What makes you think vertical dispersion is a problem? The ceiling reflection might be one but that's been taken care of by the absorber hat.
The subs are DIY. Two downfiring Shiva-X in 90l sealed boxes. Everything runs through an AVR with Audyssey XT32.
The subs are DIY. Two downfiring Shiva-X in 90l sealed boxes. Everything runs through an AVR with Audyssey XT32.
Guys keep it on topic please 🙂
As for the Watsons I have returned to a normal stereo at the moment, having built a 4-way dipole. All the channels and amps are used !
Strangely with normal Stereo I do not miss the Watson !?
As for the Watsons I have returned to a normal stereo at the moment, having built a 4-way dipole. All the channels and amps are used !
Strangely with normal Stereo I do not miss the Watson !?
Just when things (the paper Elias linked) got really interesting 🙂
How symmetrical is your setup?
Looks like you have a hard time accepting that others don't encounter the same perceptual problems you do.
Thorsten, i tried to turn around the Kiso Mini but that does not work as well as shadowing them. I will now make a filter at ca.2kHz.
Hi,
The Basotect Hat... 😀
So you have a vertical directivity problem... 🙂
Hmmm, I might like different Amplification, otherwise quite sensible.
Ciao T
The Basotect Hat... 😀
So you have a vertical directivity problem... 🙂
Hmmm, I might like different Amplification, otherwise quite sensible.
Ciao T
Which speaker doesn't have that "problem"? Nevertheless, I'm still waiting for Earl to build an elliptical waveguide 😉
The AVR delivers enough power for the Nathans. The subs have their own amps.
I have proposed that some of the advantage is in mitigating high-q dips, and realized something- in my rig, where the TV and speakers form an arc approximately equidistant from the couch, I've noticed a few times when watching things that the TV speakers are still on- and it sounds terrific. I wonder how much benefit could be derived from a pair of fullrangers, one per channel, placed similarly to a center channel, and run via resitors or transformers for attenuation and to prevent significant additional current demands from the amp.
I think I shall try it! Purely subjectively since I'm lazy about measurements)
I think I shall try it! Purely subjectively since I'm lazy about measurements)