IIRC the PB worked best with a stereo input to better define noise and
make the choice of switching between groove sides. Better to sum the
John Eberle wrote:
> Playing 78s through an RIAA preamp basically rolls off the highs and
> boosts the lows dramatically altering the frequency response from what it
> should be . The RIAA pre-emphasis eq curve is applied during the disc cutting
> stage of 45 and LP record mastering . 78 RPM records
> were not cut with RIAA pre-emphasis ; but rather were cut mostly
> flat with perhaps some low end roll of to control the size of the bass
> groove excursions .
> A simple and cheap way to playback 78 RPM records is to connect the
> turntable or tone arm audio out to the HI-Z microphone inputs available
> on many preamps . This will give the flat response desired for 78s and a
> little low boost will bring the lows back in to proper perspective .
> Also , most cartridges in current use for playing 78s are actually stereo
> and of course 78s are mono . It is totally weird to hear a 78 RPM disc
> being played with stereo clicks and pops . The cartridge can be wired in the
> headshell to reproduce lateral mono modulation only . This makes the record
> noise a lot less and less need for the Packburn or any other analog or digital
> transient noise reduction and better over all quality .
> If anyone would like an mp3 of one of my commercial 78s reproduced
> in this manner , just contact me off list and I will email it to you .
> John Eberle : Over 27 years disc cutting experience and over 35 years in
> Mastering !
> AMERICANA CD MASTERING
> 313 EAST COLLEGE STREET SUITE 3A
> DICKSON , TENNESSEE 37055
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