"IMD is is the result of two or more signals of different frequencies being mixed together (as in a stereo speaker set up where the signals are not always equal in frequency), forming additional signals at frequencies that are not, in general, at harmonic frequencies (integer multiples) of either." (Wikipedia)
"A comb filter adds a delayed version of a signal to itself, causing constructive and destructive interference. The frequency response of a comb filter consists of a series of regularly-spaced spikes, giving the appearance of a comb." (Wikipedia)
I think that both exist in our speaker systems. Prior to experiencing the Sumiko Master Set I dealt with these issues by moving my speakers six-plus feet out into my room. This sacrificed bass performance and still could leave female voices "shouty" or "hooty" and trumpets hardedged and harsh, rather than brilliant.
The Master Set minimizes these negative effects, rendering the system much more transparent and detailed, while removing stress and harshness. It's like a major upgrade in equipment when you experience it.
Dave
"A comb filter adds a delayed version of a signal to itself, causing constructive and destructive interference. The frequency response of a comb filter consists of a series of regularly-spaced spikes, giving the appearance of a comb." (Wikipedia)
I think that both exist in our speaker systems. Prior to experiencing the Sumiko Master Set I dealt with these issues by moving my speakers six-plus feet out into my room. This sacrificed bass performance and still could leave female voices "shouty" or "hooty" and trumpets hardedged and harsh, rather than brilliant.
The Master Set minimizes these negative effects, rendering the system much more transparent and detailed, while removing stress and harshness. It's like a major upgrade in equipment when you experience it.
Dave