Bandwidth question?


I am interested in the qualitative difference in sound betw amplifiers that have -3db roll off at 100khz vs -3db at 300khz. Thru the amps I have tried, I suspect increased bandwidth has more openness and transparency and hence a better sense of space sharing. At the same time, it is easier to screw up the sound due to noise (from components/AC/RF) or improper cartridge loading. I am not very certain of the correlation and interested in what you guys think?

In reviewing the measurement sections of stereophile, many amps with -3db at 100khz demonstrate subtle rounding of the edges when reproducing 10khz square waves. I don't listen to square wave so I don't know what that translate into.

I realize that some amps (Spectral or Soulutions) has very high bandwidth (MegaHz) to implement negative feedabck. I am not refering to that.
128x128glai

Showing 3 responses by marakanetz

Let's start with audible frequency bandwidth = 20Hz...20KHz.
Than take any full range speaker that would be less-likely designed to cover the whole audible bandwidth.
Than take onto consideration that vast majority of people wouldn't hear anything bellow 28Hz or above 16kHz.
Than let's see where 100 or 300KHz???

A square waves are usually considered as samples in digital carying or encoding frequencies that are absolutely unaudible just like DC. A sound is a continuous signal in general. As far as "rounding of the edges..." looks like heresy to me so don't listen and don't translate unlistenable.

Many amplifiers can go way beyond audible bandwidth, but last would less-likely dictate performance difference.
Ralph,
I clearly understand the statement about our ears ability, but what about speakers? Where can you place them in discussed equation? Are they identical to our ears?