Radial Engineering JDV Mk5, Руководство пользователя

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Radial Engineering Ltd.
JDV™ Mk5 Active Direct Box
True to the Music
®
9
using the Phazer
Combining two pickups or a mic with a pickup can often produce much
more realistic sounds than using a mic or pickup alone. Things really start
to shine when you combine the two sources using the BLEND function
and then introduce the PHAZER™ into the equation.
The Phazer is an analogue phase adjustment tool that is applied to
the primary source or that closest to the originating sound. This is then
‘fractionally delayed’ to time-align the fundamental frequencies so that
they play in phase.
Start by setting up two sources on a single instrument and set the relative volumes to the
same level. Keep in mind that if you use a mic, any movement or altering the distance of the
mic from the sound hole will change the relative phase and loudness. So you either have to
carefully remain in one place relative to the mic or use an instrument-mounted microphone
that will move with the instrument.
Set the phase control fully counter-clockwise. Activate the Phazer by pushing in the switch.
Now have someone rotate the control as you play. Altering the relative level between the mic
and pickup dramatically alter the tone of the instrument. Try changing the range using the
slider switch. Have fun. Note that there is no perfect setup. Phase is relative and cannot be
anticipated. Simply use your ears to fi nd the most pleasing sound.
A - Condensor Mic
B - Pick up
Night
Phase Shift
Crest
0° 90° 180° 270° 360°
Amplitude
0dB
Time
Trough
Wave Length
Wave Cycle
Phase Corrected
A
B
Night
Phase Shift
Crest
0° 90° 180° 270° 360°
Amplitude
0dB
Time
Trough
Wave Length
Wave Cycle
Phase Corrected
A
B
BLenDing The TWo ChAnneLs
The JDV is also equipped with a BLEND function on the side
panel that allows both channels to be active at the same time.
This can be used to combine a piezo and a magnetic pickup
on an acoustic guitar, a mic and a piezo on a bass or to simply
have two instruments on all the time for practicality sake. The
BLEND is activated by depressing the set & forget switch
inward. You may fi nd a slight drop in volume due to the mixing
process. Simply adjust the input level controls to compensate.