Ver. 2.0 - ©Phædrus Audio Ltd. 2015 All rights reserved.
That said, the headroom on the
PHILTER is considerable, and no
noticeable distortion is evident when
operating the equipment at standard
recording industry levels of
+4dBu=0VU, or even higher. There is
thus considerable scope for
experimentation with over driving
this vintage circuitry to explore its character in gradual overload. For
example, peaks may be allowed to reach +18dB above alignment
level without clipping. The Phædrus Audio PHAB and the PHAME
preamplifiers and the PHILTER equaliser may thus be used directly
to feed modern A to D conversion equipment aligned to EBU or
SMPTE standards following the recommendations illustrated (right).
Equaliser performance
Equaliser performance is best defined graphically and that is how it is presented below.
Control extremes