response effect which is sometimes partly characterised
as "quacking"
Increase Presence CW to thicken treble, increase punch
and increase bias to top 2-3 strings
N.B. Pro Audio or dictionary defined "Presence" as used
by Headway should NOT be confused with the controls
sometimes listed on Electric Guitar combo amps which
use the term to denote high treble
v)
TREBLE
CONTROL: +/- 13dB Centred broadly @
10.5 kHz with shelving
HIGH allows control of treble at higher end of the audio
spectrum which offers you increased brightness on
turning CW or a jazzy mellow sound on turning ACW.
Treble overlaps mainly into Presence area. However, low
strings will also produce high tones or harmonics
Cut Treble ACW to reduce high end feedback,
harshness, externally generated hiss, squeaks from new
strings or to compensate for over-bright pickups or hard
reflective rooms.
Increase Treble CW to compensate for old, dull strings,
weak top strings, mellow pickups or dull, boxy rooms and
P.A's
Use Treble control to fine tune the effect of the
Harmonic Enhancer Control.
For Piezos, try applying a
treble cut, while the H.E Pot control is placed about
halfway CW or full ON to the right
P.33
