Audison LRX 5.600 User Manual

OWNER’S MANUAL

CAR POWER AMPLIFIER

PRINTED IN ITALY - Code 10125780

62018 Potenza Picena (MC) Italy

Tel. [phone] • Fax [phone] • http://www.audison.com • e-mail: [e-mail]

is a division of

Audison measurement standards

(Power measures taken according to audison standard, 1998 edition)

- 12VDC and 13.8VDC;

- 1 kHz or crossover cut-off frequency;

- 0.3% THD @ nominal power; 1% THD @ continuous power;

- Tolerance: +10%; -5%;

- Continous power given by RMS Voltage measured on resistive load;

- The nominal power of the amplifier is measured upon a battery voltage of 12 Volts with
a 4 Ohm load and with all channels in function.

2

INTRODUCTION

INTRODUCTION

Audison thanks you for preferring this product and compliments you on your choice since it was

designed in order to insure outstanding musical and instrumental performances.
Before use instructions, please carefully read the safety norms you have to respect in order to avoid
unpleasant inconveniences and to enjoy this product at best.

PRECAUTIONS

- Avoid to install the amplifier where temperature is below 0°C or above 55°C and in non ventilated
places.

- The amplifier needs 12VDC power supply voltage with negative to ground. Be sure that your car electric
system is compatible with the amplifier ordinary functioning.

- For safer driving,we recommend to adjust volume not to drown external traffic sounds.

WARNING!:

While installing the amplifier, make sure that the cable coming from the battery positive pole (+)
doesn’t touch the amplifier heat sink.

The heat sink is directly connected to the battery negative pole (-) through the screws which fix it to the
vehicle chassis. Its contact with the positive pole cable would cause short circuit and,thus, possible fires
and battery damages.

Please connect power supply cables to the amplifier terminal blocks (POWER + and -) before and
to battery AFTER, to get maximum safety..

CAUTIONS

INPUTS: If the source output signal ground (PRE OUT) is not connected to the source chassis and the
system sound is not powerful enough or is distorted, try to solve the problem by connecting the output
signal cable braided shield (PRE OUT) to a point of the source chassis.

OUTPUTS: Don’t connect –L and –R power outputs to each other or to ground (car chassis). In case you
use an external crossover, make sure that channels grounds are not connected one to the other.

22

3

CONTENTS

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 4

In-Out panel

Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Power supply panel

Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Fuse replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Controls panel

Functions and controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Setting panel

Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Amplifier configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Subsonic filter cut-off frequency modification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

VCA-VCA1D modules insertion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Technical features

Size for fixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

LRx 5.600 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Accessories

VCR01K, VCRAK and VCRDK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

CLK2 - LRx Cooling Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Configurations

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Configurations table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Controls panel diagram and configuration switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Configuration examples

Front+Rear+Sub (F-R Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Multichannel+Sub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3 Channel Front+Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Installation

Logo rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Amplifier fixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Electric connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

audison cable products for electric connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

audison measurement standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

INSTALLATION

audison cable PRODUCTS FOR ELECTRIC CONNECTIONS

4

DESCRIPTION

Audison LRx 5.600:

Five 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 stages are characterised by a very linear circuitry.They have coupled differential transistors and an
A Class complementary voltage amplifier. Power sections have Darlington configuration with high gain
and SOA (Safety Operation Area) BJT TO247. Thanks to its great capacity to supply current, to the use of a
pair of BJT for every channel and of two pairs for the sub,this amplifier can easily drive even the hardest
loads and satisfy whatever power needs. It can give 60W on Front and Rear channels and 180W on sub
with 4 Ohm load, 85W on Front and Rear channels and 240W on sub at 2 Ohms in continuous mode.
Power increases up to 170Wx2 at 4 Ohms and to 240Wx1 at 2 Ohms in mono configuration (3-Ch).
Differently from what occurs with other amplifiers, LRx 5.600 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 5.600 has a bypass subsonic filter (24dB/Oct.) with adjustable frequency, pre-set at 20Hz, and three
Butterworth crossovers with independent frequencies: HI/LO-PASS (12dB/Oct.), HI-PASS (12dB/Oct.) and
LO-PASS (24dB/Oct.). Constant Bass function is also available; it permits to control the subwoofer level
whatever the head unit Fader adjustment is.
Four switches under the setting panel in the amplifier bottom allow to choose:

• functioning configuration: Front/Rear and Multichannel;

• 3/5 channel output;

• the activation of a third input dedicated to subwoofer.
They also permit to configure the preamplified output (OUT) as additional input to accept the source
output for Rear system.

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.

21

INSTALLATION

CAUTION!
For the system safer protection, we
recommend the use of a strip fuse
on the cable that connects the
battery positive pole to the
amplifier POWER (+) terminal block.
This fuse has to be installed about
10 cm far from the battery; its value
will have to be equal or slightly
higher (+10% approx.) than
consumption @13.8 VDC, according
to the different configurations (see
“Technical features”).
It will have to be equal to the sum of
the values of all fuses in case system
consists of several amplifiers or in
case amplifiers have several fuses.

AMPLIFIER FIXING

ELECTRIC CONNECTIONS

LRx 5.600 FUSE: 50A

1

FRONT-WF/REAR-TW/SUB

Power outputs of the amplifier Front, Rear and Sub channels. Connect
the speakers cables to these outputs according to polarity. Terminal
blocks accept cables up to 9 A.W.G. max (see “audison cable products
for electric connections” as far as their size is concerned). We
recommend the use of audison cable products.
Please use FRONT-WF channels +L and –R terminal blocks called mono
for the right channel (R) and REAR-TW channels +L and –R terminal
blocks for the left channel (L) in order to connect the amplifier in mono
(3 Ch.) and to exploit the maximum power insured by this configuration.

PPS (Phantom Power Supply)

Power supply socket for audison external
audio accessories.

2

IN REAR/OUT

Left (L) and right (R) channels inputs of the amplifier REAR system. Rear preamplified outputs of a source (head unit, CD
player, DAT, etc.) or of an external electronic crossover must be connected to them. These inputs can also be configured
as amplifier HI-PASS preamplified outputs (see “Configurations table”).

4

IN SUB

Left (L) and right (R) channels inputs. They accept the possible subwoofer preamplified output coming from the source.
Since subwoofer output is mono, the two inputs are to be mixed when used together.

5

IN FRONT / 3 Ch-mono

Left (L) and right (R) channels inputs of the amplifier Front system. Front preamplified outputs of a source (head unit, CD
player, DAT, etc.) or of an external electronic crossover must be connected to them. In three channel configuration (3 ch),
the right channel (R) drives Front outputs in mono, while the left channel (L) drives Rear ones in mono. The subwoofer
can be driven by these two inputs together; if the source has the necessary, special output, it can be driven through In Sub
input, to select through the proper switch.

3

4

1

2

5

3

1

5

IN-OUT PANEL

FUNCTIONS

20

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.

6

POWER SUPPLY PANEL

REMOTE IN

Terminal to connect Remote cable, which comes from the
source and which controls the amplifier switching on. Applied
voltage must be between 7 and 15VDC.

1

REMOTE OUT

Terminal to repeat the switching on control (Remote IN) coming from the source. It is used to
switch on another amplifier or device in the system simultaneously. Available voltage is the same
as the one applied on Remote IN.

2

VCR (optional kit)

Terminals to connect VCR01/VCRA/VCRD adjuster included in sub output volume remote control
kits (VCR01K/VCRAK/VCRDK).

3

FUSE (50A)

Strip fuse. It insures the amplifier general protection. In case the fuse breaks down, please replace
it by respecting its original value.
CAUTION: If you want to protect the system even more, please put a strip fuse onto the cable
which connects the battery positive pole to the amplifier POWER (+) terminal block (see “Electric
connections”).

4

POWER

Terminal blocks for the amplifier power supply cable connection. Connect positive and
negative poles according to indicated polarities. Holes have 8mm diameter and accept cables
up to 3 A.W.G. max. In order to get the best current transfer, please use power supply cables
with as big a section as possible. audison cable catalogue offers you a complete range of such
products which can satisfy whatever demands; you can also find Maincrimp terminals in it. We
strongly recommend their use because they contain the cable non protected end and allow the
terminal block to fasten all its useful section.

5

IN OUT

REMOTE

FUSE

POWER

1

2

3

4

5

FUNCTIONS

19

CONFIGURATION EXAMPLES

Front Rear

+

+

LRx 2

Config. 3

Rear

Tweeter

Woofer

Tweeter

Woofer

Subwoofer

LRx 5.600

Config. 3

Tweeter

Woofer

Front L

Front R

+

+

Tweeter

Woofer

+

Pre Out

3 CHANNEL FRONT+REAR

77

POWER SUPPLY PANEL

1 - Open the transparent cover by pushing the two teeth in

its lowest corners to the direction indicated by the arrows.

4 - Close the transparent cover.

3 - Check the value of the new fuse to assemble, then fix it by

gradually and alternately fastening the two screws. This will
avoid voltage drops along the line and will make the device
perfect functioning easier.

2 - Remove the screws which fasten the fuse to eliminate
pieces of the broken one; prevent them from going into the
device.

FUSE REPLACEMENT

18

CONFIGURATION EXAMPLES

FRONT+REAR+SUB (F-R MODE)

MULTICHANNEL+SUB

Rear

LRx 5.600

Config. 2

+

+

Woofer

Tweeter

Woofer

Tweeter

Rear L

Front L

Pre Out

Sub

+

Subwoofer

Pre Out

Front

Woofer

Tweeter

Rear R

+

+

Tweeter

Woofer

Front R

LRx 5.600

Config. 4

+

Woofer

Midrange

Front L

+

Tweeter

+

Subwoofer

Front

Tweeter

+

Midrange

Front R

+

Woofer

8

CONTROLS PANEL

LIMIT (orange LED)

It indicates the Overload Limiter circuit is on.

Caution:

When this led is on (although sporadically), it means the applied load is a hard one. The activation
of Overload Limiter circuit (output power limiter) will anyway allow the amplifier to function
without distortions. In case Overload Limiter gets on too frequently (at every power peak), you will
need to check if there are any failures or a too hard load (that’s to say impedance is about 50%
lower than the minimum recommended one). The amplifier can go on functioning in these
conditions but power will inevitably decrease.

1

ON (green LED)

It indicates the amplifier is on.

2

1

2

3

4

5

10

9

8

6

7

11

FUNCTIONS AND CONTROLS

17

CONFIGURATIONS

FRONT/WF REAR/TWEETER

SUB

IN-REAR

PRE-OUT

IN-SELECT

MIXED SUB*

IN-SUB

MODE

CH SELECT

PRE IN

1

1IN/SUB

F3

F1

3

*

SUB

FR

MC

FR

3 CH

1IN/SUB

F1

BRIDGED

F2

BRIDGED

F2

NOT USED

2

*

SUB

FR

MC

FR

2IN/SUB

F1

F2

F3

4

F3

*

SUB

FR

MC

FR

5 CH

1IN/SUB

F1

F2

F4

5

*

SUB

FR

MC

FR

F1

1 IN

F2

(RIGHT)

(LEFT)

BRIDGED

F2 (RIGHT)

F4

F4

BRIDGED

F2 (LEFT)

F4

F3

1 IN

3 CH

NOT USED

IN REAR

NOT USED

2 IN

5 CH

*

MIXED SUB (F+R)/IN SUB switch can be set as follows:

- MIXED SUB (F+R): sub is driven by Front and Rear signals together

- IN SUB: sub is driven by the special input.

1IN/SUB

CONFIG.

12dB

12dB

24dB

24dB

24dB

24dB

24dB

12dB

12dB

12dB

12dB

12dB12dB

12dB

12dB

12dB

12dB

1 IN

MC

FR

5 CH

*

SUB

FR

CONFIGURATIONS TABLE

CONTROLS PANEL DIAGRAM AND CONFIGURATION SWITCHES

LRx 5.600 can be configured as follows:

Config.1 = 5 Ch.: Front (Hi 12dB) + Rear (Hi 12dB) + Sub (Lo 24dB); IN Front (1 IN);Input Sub (IN Sub/IN Front)
Config.2 = 5 Ch.: Front (Hi 12 dB) + Rear (Hi 12dB) + Sub (Lo 24dB); IN Front/Rear (2 IN);Input Sub (IN Sub/IN

Front + Rear)

Config.3 = 3 Ch.: Front L + R (Hi 12dB) + Sub (Lo 24dB); IN Front (1 IN);Input Sub (IN Sub/IN Front + Rear)
Config.4 = 5 Ch. Multichannel: Woofer (Hi/Lo 12dB) + Tweeter (Hi 12dB) + Sub (Lo 24dB); IN Front (1 IN); Pre

Out: (Hi 12dB)
Config.5 = 3 Ch. Multichannel:Woofer L + R (Hi/Lo 12dB) + Sub (Lo 24dB);IN Front (1 IN); Pre Out:(Hi 12dB)

9

CONTROLS PANEL

F4

It permits to adjust the woofer 12dB/Oct.
LO-PASS filter and the Mid-Tweeter
12dB/Oct. HI-PASS filter crossover
frequencies between 150 Hz and 5 kHz. It
works only in Multichannel configuration.

9

F2

It permits to adjust the 12dB/Oct. HI-PASS
filter cut-off frequency between 40 and
150 Hz; this filter is for woofer in
Multichannel configurations and for Front
system in Front-Rear configurations.

10

F3

It permits to adjust the Rear system
12dB/Oct. HI-PASS filter cut-off frequency
between 40 Hz and 150 Hz. It works only in
Front-Rear configuration.

8

F1

It permits to adjust the subwoofer
24dB/Oct. LO-PASS filter cut-off frequency
between 40 Hz and 150 Hz.

7

SAFETY (red LED)

It indicates that the amplifier protection
circuits are on. In order for the amplifier to
work again, you need to switch the system
off and then on after 10 seconds at least.
We recommend to check all connections
before switching the amplifier on again.

If LED stays on, please contact Audison
authorised after sale centres.

11

REAR M-TW (Level)

It adjusts the amplifier Rear channels input
sensitivity and sets its output level.
In multichannel configuration, the
adjustment concerns the channels for the
high frequencies HI-PASS filter (M-Tw).

5

FRONT WF (Level)

It adjusts the amplifier Front channels input
sensitivity and sets its output level.
In multichannel configuration, the
adjustment concerns the channels for the
woofer BAND-PASS filter (Wf).

6

SUB (Level)

It adjusts the amplifier Sub channel input
sensitivity and sets its output level.

4

SUBSONIC

It permits to eliminate subsonic
frequencies; these sounds cannot be
heard by human ears but cause useless
and damaging stress to amplifier and
speakers.
Subsonic filter can be bypassed
(BYPASS) and it is pre-set at 20 Hz. Its
cut-off frequency can be adjusted
between 16 and 32 Hz through 4 Hz
steps; this occurs by replacing the special
resistors located into a socket which can
be reached through the setting panel in
the amplifier bottom.

3

16

CONFIGURATIONS

BLOCK DIAGRAM

REAR

FRONT

RIGHT

LEFT

3 CH

FR-RIGHT

L

L

f

V

L
E

t/W

V

n
E
L

ro

F

T
N

F

O

W

Hz

FR

2

12dB / Oct.

F

MULT

E
D
O
M

F/ R

LO

-TW

Hz

M

4
F

F
W

12dB / Oct.

HI

FRONT-AMP

R

5
÷

.2
0

R

L
E
V
E
L

T
C

LE
E

S
H
C

5 Ch

0
5
1
÷
0
4

R
EA

mute

K
5
÷
0
5
1

R

3
F

T
C
E
L
E
S

IN

L

L

S

S

N

N

L

L

IN FRONT

S

N

R

IN REAR/OUT

REAR

L

w

-T

r/M
a
e
R

2 IN

EETER
TW

SUB

FRONT

3 CH

FR-LEFT

STEREO SIGNAL

REAR-AMP

R

SUB AMP

INVERTED

AMPLIFIER

L

R

V

3 Ch

5
÷

.2
0

V

L
E
V
E
L

5

b

÷

u

.2

S

0

l
a

le

n

A

u
d

C

tio

o

V

p

BYP12

m

o

module

BY - PASS

IC

ON

N

by-pass

SO
B

SU

ic
n

so
b

su

R

Hz

R

24dB / mono

2
3
÷
6
1

0

Hz

5
1
÷
0
4

12dB / Oct.

B
SU

1
F

Hz

24dB / mono

0
5
1
÷
0
4

1 IN

B

IN-SUB

U
S

IN

F+R

MIX

MIX

L

R

L

S

N

R

L

IN SUB

L

R

NON INVERTED

AMPLIFIER

BAND-PASSLO-PASS

HI-PASS

INDEPENDENT

FREQUENCY

CONTROL

NON INDEPENDENT

FREQUENCY

CONTROL

SETTING PANEL

10

It permits to reach the switches for the amplifier configuration, the resistors to set subsonic filter cut-off
frequency and to insert VCA modules for the subwoofer volume remote control.

AMPLIFIER CONFIGURATION

LRx 5.600 is configured through IN SELECT, Ch. SELECT, MODE and IN SUB/MIXED SUB (F+R) switches,
located under the setting panel.

• IN SELECT (1 IN – 2 IN)
It permits to use OUT preamplified output as additional input for the head unit Rear preamplified
output, if available (2 IN). This configuration also activates Constant Bass function.
If this switch is on 1 IN, you will be able to make a Front+Rear+Sub system by using only the Front input.

• Ch. SELECT (5 Ch.– 3 Ch. mono)
It configures the amplifier output as 3 or 5 channels. If switch is on 5 Ch., you will be able to make a
Front+Rear+Sub system;if it is on 3 Ch. mono,you will be able to have a Front+Sub system.

• MODE
It permits to choose the amplifier functioning configuration between
Front-Rear and Multichannel. If switch is on Front-Rear, Hi-Pass filters for
Front (F2) and Rear (F3) system are activated. If it is on Multich., Hi-Pass
filters for Woofer (F2) and for Woofer/Mid-Tweeter (F4) are activated.

• IN SUB/MIXED SUB (F+R)
It activates IN SUB input to accept the source third preamplified output
for subwoofer (IN SUB).
In case source doesn’t have it, it is possible to drive the subwoofer by
taking the necessary signal from IN Front and IN Rear inputs (MIXED SUB
F+R).

2 - Once operations have
been carried out, please
close the setting panel.

1 - Remove the setting panel in the
amplifier bottom in order to carry out
operations.

ACCESSORIES

15

FUNCTIONS

Installation:

First fan

Second fan

Battery

12 V

+

Ground

Remote

IN

Remote

OUT

Remote

+

POWER

Setting panel

11

SETTING PANELACCESSORIES

14

SW1

S1

C1

C1

S2

FS1

FS2

FS3

FS4

39K

33K

100K

15K

JFS1

SUBSONIC FILTER CUT-OFF FREQUENCY MODIFICATION

Replace FS1, FS2, FS3, FS4 resistors according to
the values in the setting panel table.

10 mm

5 mm

Remark: Cut the new resistors

rheophores according to the
size in the picture.

Procedure:

VCA-VCA1D MODULES INSERTION

LRx 5.600 can accept one of the three optional kits which allow the subwoofer volume remote control:
VCR01K,VCRAK or VCRDK.
These kits have a specific module,VCA or VCA1D, to insert into the amplifier through the setting panel.

Installation:

1 - Remove BYP12 bridge.

2 - Insert VCA/VCA1D module.

- Insertion key. It prevents the module from
being inserted in the wrong way.

This cooling system is specially designed to provide LRx amplifiers with the right working
temperature.
CLK2 should be used when LRx amplifiers work in extremely hard conditions (very low loads) or in
installations where space is too narrow and heat sink cooling is not enough. It consists of two units to
apply onto the amplifier sides; each of them is provided with an electronically controlled fan. Its
intervention depends on a thermal sensor that starts the system as soon as LRx heat sink reaches
45°C. The same sensor is connected to a special circuit which controls the two fans speed progressive
increase when temperature increases,too.
Air flux constant control allows the amplifier very good thermal stabilization and limits noise.

CLK2 - LRx Cooling Kit

Subsonic filter is pre-adjusted at 20 Hz. In order to modify this value, please act according to what
follows.

13

ACCESSORIES

LRx 5.600 can accept one of the optional kits that allow the subwoofer volume remote control.
VCR01K and VCRAK are analogue and special for sub; VCRDK is digital and can be used for master
volume control or for level control of any ways in a multichannel system.
These kits are available as accessories and consist of three elements:

1) Volume adjuster (VCR01/VCRA/VCRD);

2) VCA/VCA1D module to put inside the amplifiers;

3) Wire to connect VCR01/VCRA/VCRD adjusters to the proper sockets in the amplifier rear panel
and to the car lights switch, in order to light it up.
Install VCR01/VCRA/VCRD adjusters in a place you can easily and comfortably reach, according to
the following connection diagram.

VCR01K,VCRAK and VCRDK

Remote Out

IN OUT

REMOTE

FUSE

POWER

-

+

Battery

VCR 01

Control

Yellow/White

VCRD/VCRA

VCR01

Yellow/White

Blue

Black

Black

(250mA)

Red

Red

(250mA)

Orange

Lights
switch

FUSE

Ground

Ground

min max

0

FUSE

TECHNICAL FEATURES

12

119 mm

412 mm

445 mm

176 mm

POWER SUPPLY

Voltage:. . . . . . . . . . . . . . . . . . . . . . . . . . . 11 ÷ 15 VDC

Idling current: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 A

Idling current when off: . . . . . . . . . . . . . . . 0.02 mA

Consumption @ 13.8 VDC
(Max Musical Power):

- A config.(see Output Power): . . . . . . . . . . . . 33 A

- B/C config.(see Output Power):. . . . . . . . . 48.9 A

AMPLIFIER STAGE

Distortion – THD (1kHz): . . . . . . . . . . . . . . . 0.009 %

Bandwidth (-3dB): . . . . . . . . . . . . . . . . 4 Hz ÷ 85 kHz

S/N ratio(A weighed @ 1V): . . . . . . . . . . . . . . 105 dB

Damping factor (1 kHz, 4 Ohms): . . . . . . . . . . . 240

Input sensitivity: . . . . . . . . . . . . . . . . . . 0.2 ÷ 5 VRMS

Input impedance: . . . . . . . . . . . . . . . . . . . . 15kOhms

Load impedance:

- Front/Rear (4 Ch.stereo): . . . . . . . . . . . . 4-2 Ohms

- Front/Rear (2 Ch.mono in bridge): . . . . 4 Ohms

- Sub: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 2 Ohms

Nominal output power (RMS)

NP @ 12VDC; THD 0.3%: . . . . . . . . . . . . . . . . . . . . . . .

60W x 4 (4 Ohms) + 180W x 1 (4 Ohms)

Output power (RMS) @ 13.8 VDC;THD 1%

- A config.: 60W x 4 (4 Ohms) + 180W x 1 (4 Ohms)

- B config.: 85W x 4 (2 Ohms) + 240W x 1 (2 Ohms)

- C config.(3 Ch.): 170W x 2 (4 Ohms) + 240W x 1 (2 Ohms)

FILTERS/INPUTS

Front-Rear/Front 3 Ch.:

12dB/Oct. Hi-Pass (40 ÷ 150 Hz)

Multichannel:

- Woofer: 12dB/Oct. Band-Pass

(40 ÷ 150 Hz/150 ÷ 5000 Hz)

- Mid/Tweeter: 12dB/Oct. Hi-Pass (150 ÷ 5000 Hz)
SUB (IN F-R: Constant Bass):

24dB/Oct. Lo-Pass (40 ÷ 150 Hz)

Subsonic: Bypass/ 24dB/Oct. Hi-Pass,16÷32 Hz

(pre-set at 20 Hz)

Pre Out (IN Front): 12dB/Oct. Hi-Pass (40 ÷ 150 Hz)

Inputs: . . . . . . . IN Front - IN Rear (Pre Out) - IN Sub

OTHER FUNCTIONS

Remote IN: . . . . . . . . . . . . . . . . . . 7 ÷ 15 VDC – 1 mA

Remote OUT:. . . . . . . . . . . . . . . . . . . 12 VDC – 10 mA

Auxiliary power supply (PPS):. ±12 VDC – 300 mA
IN VCR (SUB volume) VCA/VCA1D attenuation: 100 dB

Fuse: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 A

MAX SIZE (L x H x D): 176 x 56 x 445 mm

WEIGHT: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.9 kg

Drilling dimensions for fixing

*

SIZE FOR FIXING

LRx 5.600