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Terminals: installation of TRM4 and TRM6
1
1
2 3 4
How to put logo in the right way in case the amplifier is mounted upside down
Plate mounting with hidden fixing screws
TRM4: mounting into VRx
A - Self-tapping screws
(Ø 4.8 mm) at sight.
- Remove the
wooden strip
1
- Remove the
wooden strip
2
1 3 4
- 23 -
5 6 7
C- MA4 screws at sight.
2
A - Self-tapping screws
(Ø 4.8 mm) at sight.
2
B - Hidden MA4 screws.
2
C- MA4 screws at sight.
2
B - Hidden MA4 screws.
2
Note: Please use the special multispanner supplied with the devices in order to carry out these operations.
TRM6: mounting into VRx
2
Controls and functions
Controls under
wooden strip
Short guide
K1 - Bal/Unbal inputs switch.
K2 - LNS circuit ON/OFF switch for line noise
suppression.
K3 - Mono/Stereo switch. In mono, the amplifier
input is the one which is commonly used for right
channel (R).
K4 - It selects sensitivity range.
LR, LL - Input sensitivities adjustment of right and
left channel respectively. When the amplifier is in
mono, adjustment is made through LR.
ON - Green led
It indicates the amplifier is on.
SAFETY - Red led
It indicates protection intervention: excessively high
temperature or output anomalies (direct current,
short circuit or dangerously low load impedance).
Protection intervention stops the amplifier
functioning. Switch the amplifier off; when anomaly is
eliminated, switch the amplifier on again.
PEAK L - R - Orange leds
They are on when one or more VRx amplifiers are
about to reach distortion threshold. They are useful to
adjust inputs sensitivity.
Controls description
Leds
Warning - When SM24, mono subsonic filter for
SUB, is employed, the amplifier cannot be used in
stereo. K3 has to be set on Mono.
Note: In case of installations with more amplifiers
connected in cascade, we recommend to put K2
onto ON in the first device (i.e. the one which
receives the signal from the head unit), leaving it
onto OFF in the others.
If disturbance persists, you can activate LNS anti-
noise circuit also in the other amplifiers.
- 46 -
VRx2.150 - VRx2.250 - VRx2.400
25


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