ENGLISH
FEATURES
LR 605 XR. It is a five channel amplifier with high musical performances. The outstanding features of its
sophisticated circuitry are : “FRONT END” stages realized by two complementary differential stages,
final stages made of transistors in Darlington connection, final transistors with in current capacity of 15
A and MOSFET PWM power supply with high energy reserve.
This device has four 50 W RMS on 4 Ohms channels and a 200 W RMS on 4 Ohms and 290 W RMS
on 2 Ohms channel, specific for SUBWOOFER. Channels are driven by a sophisticated crossover which
can be configurated at two or three ways through Mode switch; in both configurations, one way, which
has a 24dB slope, is dedicated to the SUBWOOFER, which is also supplied with FADER CONSTANT
BASS function (Subwoofer constant level when Front/Rear level is varied through Fader control).
The crossover has four independent adjustments for cut-off frequencies, three adjustments for output
levels, two preamplified output/input connectors.
Mode: Switch on F/R (Front/Rear).
It allows the realisation of a HI FI, FRONT REAR system. The FRONT section is driven by the IN
FRONT input, which handles a Lo Pass filter (50 Hz - 150 Hz) for SUBWOOFER, and a Hi Pass filter
(50 Hz - 150 Hz); each filter is supplied with a frequency and level control. The REAR section is driven
by IN REAR input, which handles a Hi Pass filter (50 Hz - 150 Hz), equal to the one of the FRONT
section, with its own frequency and level control.
Mode: Switch on MULTICH. (Multichannel).
It allows the realisation of a HI FI, two way FRONT + SUB system. The only input which can be used is
IN FRONT.
It handles a Lo Pass filter (50 Hz - 150 Hz) for SUBWOOFER, a Band Pass filter for WOOFERS
(50 Hz - 150 Hz / 150 Hz - 850 Hz) and a Hi Pass filter for MID-TW (150 Hz - 850 Hz).
The crossover frequencies between SUBWOOFER and WOOFER are handled by two independent
frequency adjusters. Cut-off frequency between WOOFER and MID-TW is controlled by a single adjuster.
Each of the three power outputs is adjusted through its own level control. The Hi Pass section of MID-
TW filter (150 Hz - 850 Hz) is repeated on the proper OUT M-TW preamplified output, and it does not
have a volume adjuster. Output level is 0dB.
Sub remote volume control.
LR 605 XR is designed in order to be used with an accessory kit for the SUB volume remote control.
This accessory is VCR01K and it is supplied separately by audison. VCR01K consist of three parts:
1) Volume control (VCR01);
2) Module to put into LR 605 XR (VCA);
3) Connecting cables between VCR01 and the proper pins on the LR 605 XR power outputs panel.
PRECAUTIONS
In order for this device to function properly it’s important that it is installed in a spot where temperature
doesn’t fall below 0°C (32°F) or rise above 55°C (131°F).
It must be installed in a dry and well ventilated spot.
Power supply voltage is 12 VCC with negative to ground.
Make sure that the caracteristics of the vehicle
electrical system are compatible with this device.
For safe driving we advise to listen to music at a volume level that won’t drown external traffic sounds.
INSTALLATION
For mounting use 4 self-threading screws and protective plastic rings provided. For a very good result
we suggest to use audison cable products to complete your installation. These include: power cables,
signal cables, speaker wires, RCA connectors and all accessories needed to complete the wiring.
WARNINGS
INPUTS: If the radio-cassette player doesn’t share the output GND with the chassis, the braided shield
of the shielded cable must be connected to the radio-cassette player chassis.
OUTPUTS: Never connect -R and -L outputs to ground or to each other. If a crossover filter is used, be
sure its two channels don’t have a common ground.
REGULATIONS:
If you hear saturation phenomena at moderate volume levels, it means that a distorted
signal is coming from the radio-cassette player. Turn radio-cassette player volume down until there’s no
longer any distortion
.Then adjust the amplifier calibration levels until you hear slight saturation
phenomena.
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