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Input Modules RS5507/RS5508
Input Stage
1
The sensitivity of both the XLR and HIGH IMPEDANCE (HI-Zjack) inputs is
adjusted by the SENS control. Both inputs are electronically balanced. The XLR
sensitivity is -2dBu to -70dBu and+ I0dBu to -20dBu (switched range). The High
Impedance input sensitivity is+ IOdBu to -20dBu.
2
The 48V switch enables 48V phantom power to be fed to the m1c input.
Modules may be optionally fitted with transfom1er coupling - refer to your dealer
for suitable transformers.
3
When the RNGE (Range) switch is depressed to lower sensitivity range of the
input is selected to allow line level signals to
be
used. The signal is taken from the
input XLR, unless a jack is inserted into the Hl-Z socket, when the signal from the
jack is used instead. Note that when the RNGE switch is released, the HI-Z input
socket cannot be used.
4
The Phase 0 switch reverses the phase of the selected input to compensate for
conflicting microphone position or for crossed wiring. This switch should normally
be released.
5
The High-pass Filter control is swept 20Hz - 400Hz.
It
has an OFF switch at
the ACW end of its rotation to switch the filter out of circuit.
Frequency Response Curves of the Hi-pass Filter
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10
Insert Point
100
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10k
The insert point is normally configured as pre-EQ, and is permanently in circuit.
Separate Send and return jacks are provided at a nominal level of -2dBu: the send
is ground compensated; the return is electronically balanced. Internal links allow
the insert to be configured as post-EQ.
Equaliser
6
The Equaliser has four swept bands and is placed in circuit by pressing the EQ
switch. When switched out of circuit, its input is grounded.
All 4 bands have
+/-15dB of cut and boost.
The HF section has a 20: I frequency range ratio covering )kHz to 20kHz. The
Q
is fixed at about I. Cut and boost is by a centre detented control. The response is
normally shelving, but can be switched to peak/dip by the BELL switch.
Input Module
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