predominantly bass notes, and the
tape
beneath the treble string
bridge will carry mainly treble notes. In all cases mount the
tapes
between the soundboard struts and start experimentation from a
position of around 18" (45cm) in from the edge of the soundboard. If
an unnatural degree of treble 'bite' is required interesting effects can
be obtained by mounting one of the
tapes
directly onto the metal harp
on the inside of the piano.
Adhesive cable clips should be used if problems are found attaching
the
tapes
securely, since the plastic moulding at the cable end of the
t
ape
must not be allowed to rattle or move and should be flat against
the soundboard. Under no circumstances should any kind of tape be
applied to the outer (brown) surface of the C-ducer
tape.
Drums & Percussion:
There is a complete range of C-ducer systems
for drums and percussion, including the C-ducer Drum Wizard which
incorporates MIDI and Trigger outputs as well as balanced and
unbalanced audio. Detailed information is available within a separate
Application Note for these uses.
Latin Percussion:
The C-
d u c e r C P S / 8 p r o d u c e s
excellent results when used on
Latin drums such as Bongos
and Congas.
Two
tape
positions are
suitable: wrapped inside the
lower rim of the drum
(particularly suited to Congas
and Timbales) or wrapped
around the outer, upper rim
(particularly recommended
f o r u s e o n B o n g o s ) .
E x p e r i m e n t a t i o n i s
recommended for optimum
performance.
6
TIMBALES
POSITION FOR CONGAS
POSITION FOR BONGOS
The C-ducer
tape
The C-ducer (
C
apacitive-trans-
ducer
) is a contact condenser
microphone. It is light in weight so as to minimize interference with
the vibration of the instrument to which it is attached, and it has a
phenomenal dynamic range (the transducer itself has a dynamic
capability of >155dB) and can handle the amplitudes
within
a bass
drum without distortion. The frequency response of the transducer is
an incredible 0.1Hz to 1MHz, although this is deliberately restricted
within the preamplifier to minimize induced noise and interference.
Two lengths of C-ducer
tape
are available, 3" (7.5cm) and 8" (20cm).
The shorter length is suitable for smaller instruments (violin, folk
harp, banjo etc), and the longer
tape
is designed for other acoustic
,
stringed instruments (double-bass, cello, acoustic guitar etc), drums
and piano.
There are two C-ducer systems for use on piano and they both use two
tapes
; one has a mono output (the CP2/8), and the other has stereo
outputs (CPS/8). The
tapes
are applied in exactly the same position on
the piano in both cases (see Page 5).
The C-ducer Preamplifier
The C-ducer CP System uses a low-noise preamplifier which has been
integrated within the XLR-type connector. The output from this
connector is suited to any standard 600 ohm balanced, microphone-
level input and is wired with:
Pin 1 - Ground
Pin 2 - Signal
Pin 3 - Return
It is also possible to connect the output from the phantom-power
supply unbalanced by using Pin 2 (live) and Pin 1 (Ground) leaving Pin
3 disconnected.
Note
: The C-ducer CP Series should not be powered with anything
other than a DIN45596 48V phantom-power supply.
1
