Test di ascolto e check fase diffusori

[Not_Only_Tube]

There is a fundamental test of a pair of speakers' ability to produce a well-defined image that owes nothing to any real musical event, whether acoustic, electrical, classical, rock, or jazz. For a while forget about "soundstaging," image depth, and other such subjective buzzwords. All you need do is play monophonic pink noise through both speakers simultaneously—many test CDs have a suitable track, the only important point being that the output from both speakers be identical—and listen carefully to where the phantom image of that mono noise seems to come from. All you need to know is that a perfect pair of loudspeakers would produce an infinitely thin point of noise, with every frequency component of that noise positioned at the same place in space.

Real, rather than perfect, speakers will depart from that paradigm in two ways: first, that phantom image will acquire size; second, at some frequencies the sound will appear to come from somewhere else altogether, the image often "splashing" to the sides, or even behind you if one of the speakers has a drive-unit inadvertently wired with the wrong polarity. Careful adjustment of speaker and listening position, making sure that there are no acoustic obstacles to the sides of the speakers, should minimize any such image splashing.

If your speakers can produce a narrow mono image at all frequencies, then they will allow your ears to accurately decode the information present in two-channel recordings and synthesize a stereo image, a soundstage between and behind the loudspeakers—maybe even above them! Contrariwise, if your speakers are unable to produce this narrow mono phantom image at all, then no matter how spacious the sound on music recordings, that spaciousness will be an added function of the hardware, not anything intrinsic in the recording—it will be inaccurate, and even pleasant inaccuracy is not what this magazine is about!


Tratto da: AUDIOPHILE SOUND

[F.Calabrese]

Ho spostato qui, alla maggiore attenzione, questo prezioso consiglio.

Ho però lasciato il Link nell'altra sezione.

Grazie !
F.C.

[Tiromancino]

facciamola pure questa prova con il rumore rosa ,

ma regoliamo il volume con parsimonia

ne ho visti troppi di TW fumare

[Not_Only_Tube]

considerazioni e/o approfondimenti sul test??

[F.Calabrese]

considerazioni e/o approfondimenti sul test??

Quasi quasi domani faccio un poco di prove... e vi riferisco.

Saluti
F.C.