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Manual Audison LRx 6.SR Car Amplifier

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Manual

DESCRIPTION

Audison LRx 6.SR:

Six channel car power amplifier characterised by excellent musical performances, small size and

outstanding energy reserve.

Its PWM power supply stage is made with two pairs of 70A MOSFETs; it is stabilised and oversize.

Input stage is provided with a special circuit (LNS) which allows the system disturbances rejection,

reducing noise that is usually due to the vehicle electric parts (alternator, electronic injection, etc.),

without altering musical signal quality.

Driver stage is characterised by a very linear circuitry; it has coupled differential transistors and an A

Class complementary voltage amplifier. Power section has Darlington configuration with high gain and

SOA (Safety Operation Area) BJT TO247. Thanks to its great capacity to supply current, this amplifier can

easily drive even the hardest loads and satisfy whatever power needs. It can give 55W on Front, Rear and

Center channels and 150W on sub with 4 Ohm load, 80W on Front, Rear and Center channels and 220W

on sub at 2 Ohms in continuous mode. Differently from what occurs with other amplifiers, LRx 6.SR is not

blocked by protection systems immediately below these load values. Its exclusive “Overload Limiter”

circuit allows it to go on working, limiting output power and pointing out how hard the applied load is

by the “Limit” LED blinking.

Its big power reserve, its constant control at low frequencies and its exquisite timbre qualities make it an

ideal amplifier to realise systems designed to attain outstanding musical features and very high sound

pressures (SPL).

LRx 6.SR has a bypass subsonic filter (24dB/Oct.) with adjustable frequency, pre-set at 20Hz, and four

Butterworth crossovers with independent frequencies; three are HI-PASS (12dB/Oct.), the fourth is

LO-PASS (24dB/Oct.).

In case LRx amplifiers are used in extremely difficult conditions (very low loads) or in installations where

space is too narrow and their heat sink cooling is not enough, they can be employed together with

CLK2 cooling system (optional). It is a system made of two units to apply onto the amplifier sides; each

of them is provided with an electronically controlled fan that allows the amplifier thermal stabilisation

(see “CLK2 – LRx Cooling Kit”).

Protection includes:

• RGP (Resettable Ground Protection) circuit; in case a short circuit occurs between loudspeakers outputs

and car chassis, it detects a high current flow in the pre-input ground and acts by putting the amplifier in

stand-by, protecting its circuitry;

• a device against short circuits and against DC in the outputs, to protect loudspeakers;

• a device that detects the amplifier temperature excessive increase and stops its functioning until

optimal conditions occur again.

Once the causes which implied protection circuits intervention have been checked and solved, the

amplifier is reset by switching it off and on again.

The amplifier is also provided with another general protection which is insured by an internal strip fuse,

very easy to reach.

Optional:

The following devices are available upon request:

1 - Three kits for subwoofer volume remote control:

• VCR01 and VCRAK (analogue and specific for subwoofer);

• VCRDK (digital; it can be used for master volume control or for level control of any ways in a

multichannel system).

2 - CLK2 cooling system.

INSTALLATION

LOGO ROTATION

1 - Remove the transparent

cover which protects

controls and then the 4

screws which block the

metal plate by using

multispanner.

FUSE

POWER

IN OUT

REMOTE

2 - Remove the plate without damaging the

silkscreen printed panel which will have to

stay on. We suggest that you seize both plate

grips with your hands and pull them by

blocking the silkscreen printed panel with

your fingers against the amplifier chassis at

the same time. This will permit to remove the

plate from the panel without damages.

3 - Remove the strip with

audison logo.

5 - Mount the plate

back by fixing it

through the screws;

then, re-assemble the

transparent cover

which protects

controls.

4 - Put the strip back again after turning it, so

that audison logo is upside down.

Download manual in English (PDF, 4.44 MB)

(Consider the environment and only print this manual if it is really necessary)

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