Re: [ARSCLIST] Non-RIAA preamp

[steven c <stevenc@xxxxxxxxxxxxxx>]

----- Original Message ----- 
From: "Konrad Strauss" <konrad.strauss@xxxxxxxxxxxxx>
> on 9/8/06 11:06 AM, Jeff Brown at jeffbro@xxxxxxxxxxxxxx wrote:
>
> > But no one addressed the issue of the phase shift correction needed to
> > compensate for the phase shift introduced by the original recording EQ.
With
> > an analog phono preamp the required playback phase correction is
inherently
> > applied,
>
> Hmm, interesting question. Does the analog phono preamp really correct for
> the phase shift caused by the cutting EQ or does it simply add even more
> phase shift? I would suspect the latter.
>
The "analog phone preamp"...which, one assumes, would have capacitances
and inductances in its circuitry...would (or at least in theory should)
induce phase shifts. To further confuse things, I suspect those phase
shifts would be related to the frequencies involved in the sound signal
being dealt with! However, since any listener is by definition a fixed
distance (and thus a frequency-dependant number of wavelengths, including
fractional quantities) from the sound source...and in an environment
which is NOT free from echo/reverberation (also wavelength-dependent)...
there are phase relations of ALL sorts to be considered!

Steven C. Barr