Phase Technology dcb-1.0-lr 情報ガイド

 

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takes apart the input signal electronically, and then the speaker’s drivers need to put it back together mechanically and 

acoustically, including the interface with the room itself.  

 

Now, let’s suppose you’ve found speakers you really like. You take them home and hook them up, but there’s still no 

guarantee they’ll sound good in your room.  

•  Are the vertical and horizontal dispersion characteristics of the speakers appropriate to your equipment location 

and the room’s seating?  

•  Can you get a good enveloping soundfield at more than one or two seating positions?  
•  Does the sound change as you stand up or sit down or move from side to side?  
•  Are the speakers placed so that the sound from each arrives at your ears at exactly the same instant?  
•  Do the room’s furnishings and surfaces impact each speaker’s output the same way?  
•  Are all of your speakers voiced to sound absolutely identical (necessary to provide seamless blending of both the 

front soundstage and the surround soundfield)?   

•  Are your speakers properly matched to your amplifier so they can provide proper damping to control the motion 

of the drivers?  

•  Does your amplifier have sufficient power to produce undistorted peaks in all of your speakers, regardless of the 

program material?  

•  Do your speakers have sufficient power handling to safely utilize that amplifier’s power on sudden peaks?  
•  Will the speakers handle that power without subtly overloading and compressing the peaks, yielding unrealistic 

sound?  

•  How will your subwoofer react with the room’s acoustics if you can’t place it where physics dictates is the “proper” 

location?  

•  How will your subwoofer blend with your other speakers?  

These are just some of the questions that need to be answered to produce a realistic representation of music or movies in 

the home or studio. It sounds pretty daunting, doesn’t it? 

 

If we can’t just buy excellent products and install them into a room, expecting good results, what can be done? The 

professional audio world has known for years that a big part of the solution is to use active speakers, meaning that the 

speakers are coupled with amplifiers designed and equalized to complement the response of the speakers. This results in a 

synergistic whole much greater than the sum of unknown parts. Professional recording studios, theaters and concert halls 

have long done sophisticated measuring and modeling of the room’s acoustic properties and dimensions and have then 

spent many tens or even hundreds of thousands of dollars adding treatments to precisely control reflections, reverberation 

and bass energy. How often can we do that in our homes? How often does even a dedicated media room include all of the 

treatments needed to remedy its inherent acoustic properties? Even if it is treated, which can still cost tens of thousands of 

dollars, we know speakers and amplifiers vary widely in their responses to the constantly changing program material. 

What can be done to assure hearing every detail in every soundtrack and musical recording just as the artists intended?