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Block diagram
VRx6.420
Optional modules
Controls panel
Functions diagram
WF - Frequency adjustment.
WB - SM24 ACTIVE (ON)/BYPASS (OFF) switch.
Controls description
VRx1 and VRx2 amplifiers can use one PRM3
module; VRx4 amplifiers can use two; VRx6
amplifiers can use three. This allows the insertion
of a parametric equalisation on each way of a
multiamplified system made with VRx amplifiers.
Warning: There is a DIP Switch to be set on
ON into PRM3.1 modules.
DIP Switch
VRx Control Extensions PRM3
Stereo parametric
equaliser
Gain: ± 9 dB
Frequencies ranges: 20Hz÷200Hz; 200Hz÷2KHz; 2 kHz÷20KHz
Controls panel
Functions diagram
Q adjustment: 1÷4
Controls description
SM24 is monophonic since it was designed in
order to be used with subwoofer.
It only acts on the Right channel of
preamplified signal, therefore:
• the amplifier it drives must be configured in
mono;
• if its output is sent to an external amplifier
(possible solution with VRx4 and VRx6), only the
Right Channel of pre output must be used.
VRx Control Extensions SM24
Mono subsonic filter
Frequency range: 14 Hz ÷ 36 Hz
24dB/oct. HI-PASS
Short guide
Short guide
One band stereo parametric equaliser with
frequency, gain and bandwidth (Q) control.
Monophonic subsonic filter for subwoofer.
JF - Frequency adjustment.
JM - Switch for activating frequency ranges multiplier.
JB - Active (ON)/BYPASS (OFF) switch.
JX - Frequency ranges switch.
JL - Level adjustment.
JQ - Q adjustment.
