Audison LRX 4 300 User Manual

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.  
OWNER’S MANUAL  
CAR POWER AMPLIFIER  
is a division of  
62018 Potenza Picena (MC) Italy  
CONTENTS  
INSTALLATION  
audison cable PRODUCTS FOR ELECTRIC CONNECTIONS  
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p.  
4
5
In-Out panel  
Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Power supply panel  
Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Fuse replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
6
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 4.300 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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+Sub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18  
Front+Rear+Sub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18  
Front+Rear+Sub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
Installation  
Logo rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20  
Amplifier fixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
Electric connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
audison cable products for electric connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22  
audison measurement standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24  
3
22  
DESCRIPTION  
INSTALLATION  
Audison LRx 4.300:  
AMPLIFIER FIXING  
Four 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 permits 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, this amplifier  
can easily drive even the hardest loads and satisfy whatever power needs. It can give 65W per channel  
on 4 Ohm load and 105W per channel at 2 Ohms in continuous mode. Power increases up to 210Wx2 at  
4 Ohms in mono (bridged); it is 65Wx2 and 220Wx1 at 4 Ohms in three channel configuration (3-Ch).  
Differently from what occurs with other amplifiers, LRx 4.300 is not blocked by protection systems  
immediately below 2 Ohms. Its exclusive “Overload Limiter” circuit allows it to go on working, limiting  
output power and pointing out how hard the applied load is by theLimitLED 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 4.300 has a bypass subsonic filter (24dB/Oct.) with adjustable frequency, pre-set at 20Hz. It also has a  
HI-PASS (12dB/Oct.) and a LO-PASS (12-24dB/Oct.) Butterworth crossover with independent frequencies;  
they can be bypassed through a switch under the setting panel, in the amplifier bottom. Another switch  
under the setting panel permits to configure the preamplified output (OUT) as additional input (IN B), in  
order to accept the source second output for Rear system.  
ELECTRIC CONNECTIONS  
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”).  
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.  
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.  
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).  
LRx 4.300 FUSE: 30A  
2 - CLK2 cooling system.  
4
21  
INSTALLATION  
IN-OUT PANEL  
FUNCTIONS  
LOGO ROTATION  
1 - Remove the transparent  
cover which protects  
controls and then the 4  
screws which block the  
metal plate by using  
multispanner.  
1
CH A/HI-PASS, CH B/LO-PASS  
Power outputs of the amplifier left and right 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 electronic  
connectionsas far as their size is concerned). We  
recommend the use of audison cable products.  
Please use +L and R terminal blocks called mono in  
order to connect every channels pair in bridge and  
exploit the maximum power insured by this  
configuration.  
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.  
POWER  
IN OUT  
OTE  
2
FUSE  
PPS (Phantom Power Supply)  
Power supply socket for audison  
external audio accessories.  
2
3 - Remove the strip with  
audison logo.  
3
1
1
4 - Put the strip back again after turning it, so  
that audison logo is upside down.  
4
3
IN A  
Left (L) and right (R) inputs of the amplifier A channels. The preamplified outputs  
(PRE OUT) of a source (head unit, CD player, DAT, etc.) or of an external electronic  
crossover must be connected to them.  
Connect only the right (R) channel input in order to use the amplifier in mono.  
5 - Mount the plate  
back by fixing it  
through the screws;  
then, re-assemble the  
transparent cover  
which protects  
4
IN B/OUT  
Left (L) and right (R) inputs of the amplifier B channels or amplifier HI/BYPASS preamplified  
outputs (see Configurations table). Connect only the right (R) channel input in order to use the  
amplifier in mono.  
controls.  
20  
5
POWER SUPPLY PANEL  
CONFIGURATION EXAMPLES  
FUNCTIONS  
FRONT+REAR+SUB  
1
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.  
Pre Out  
Front  
Rear  
2
POWER  
IN OUT  
REMOTE  
LRx 4.300  
Config. 1  
LRx 1.400  
Config. 4  
3
1
FUSE  
+
+
4
+
+
5
2
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.  
Subwoofer  
Subwoofer  
Woofer  
Woofer  
3
Midrange  
Tweeter  
Tweeter  
Midrange  
VCR (optional kit)  
Terminals to connect VCR01/VCRA/VCRD adjuster included in VCR01K/VCRAK/VCRDK volume  
remote control kits.  
Rear  
4
LRx 4.300  
Config. 1  
FUSE (30A)  
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).  
+
+
Woofer  
Woofer  
5
POWER  
Midrange  
Tweeter  
Midrange  
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.  
Tweeter  
Front  
6
19  
CONFIGURATION EXAMPLES  
POWER SUPPLY PANEL  
FRONT+SUB  
FUSE REPLACEMENT  
Pre Out  
LRx 4.300  
Config. 1  
1 - Open the transparent cover by pushing the two teeth in  
its lowest corners to the direction indicated by the arrows.  
B Ch: mono (  
)
+
+
+
Subwoofer  
Tweeter  
Woofer  
Woofer  
Tweeter  
2 - Remove the screws which fasten the fuse to eliminate  
pieces of the broken one; prevent them from going into the  
device.  
Front R  
Front L  
FRONT + REAR + SUB  
Pre Out  
Rear  
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.  
Sub  
Front  
LRx 4.300  
Config. 2  
B Ch: mono (  
LRx 2  
Config. 3  
)
+
+
+
+
+
Tweeter  
Tweeter  
Subwoofer  
Woofer  
Woofer  
Rear  
Tweeter  
Woofer  
Woofer  
4 - Close the transparent cover.  
Tweeter  
Front R  
Front L  
7
18  
CONTROLS PANEL  
CONFIGURATIONS  
FUNCTIONS AND CONTROLS  
CONFIGURATIONS TABLE  
LRx 4.300 can be configured as follows:  
1
Config. 1 = Front (Hi 12 dB) + Sub: (Lo 12/24 dB); IN A (1 IN) Pre Out (Hi 12 dB)  
Config. 2 = Front (Hi 12 dB) + Sub: (Lo 12/24 dB) ; IN A-B (2 IN) Ch. B mono (Lo 12/24 dB)  
Config. 3 = Ch. A (Full Range) + Ch. B (Full Range); IN A (1 IN); Pre Out (Full Range)  
Config. 4 = Ch. A (Full Range) + Ch. B (Full Range); IN A+B (2 IN); Pre Out (Full Range)  
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 (thats 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.  
CONFIG.  
CH A-HI  
CH B-LO  
IN B/ PRE OUT  
X-OVER  
OFF  
IN-SELECT  
PRE  
OUT  
ON  
ON  
ON  
ON  
1IN  
1IN  
1IN  
1IN  
2IN  
2IN  
2IN  
2IN  
F1  
24dB  
12dB  
12dB  
F2  
12dB  
1
F2  
12dB  
12dB  
F1 Slope  
IN B  
OFF  
OFF  
OFF  
F1  
24dB  
2
3
4
F2  
F1 Slope  
1
PRE  
OUT  
2
11  
IN B  
CONTROLS PANEL DIAGRAM AND CONFIGURATION SWITCHES  
3
4
5
6
10  
9
8
7
2
ON (green LED)  
It indicates the  
amplifier is on.  
3
A CHANNELS (Level)  
It adjusts the amplifier A channels input sensitivity and sets its output level.  
8
17  
CONTROLS PANEL  
CONFIGURATIONS  
BLOCK DIAGRAM  
4
8
B CHANNELS (Level)  
F1 SLOPE  
It adjusts the amplifier B channels input  
sensitivity and sets its output level.  
It permits to choose LO-PASS filter slope  
between 12dB/Oct. (stereo) and 24dB/Oct.  
(mono, L+R).  
5
9
A CHANNELS (Stereo/Mono)  
It permits to configure A channels outputs  
signal as stereo or mono.  
F1  
It permits to adjust LO-PASS filter cut-off  
frequency between 40 Hz and 5 kHz.  
6
10  
B CHANNELS (Stereo/Mono)  
It permits to configure B channels outputs  
signal as stereo or mono.  
F2  
It permits to adjust 12dB/Oct. HI-PASS  
filter cut-off frequency between 40 Hz and  
5 kHz.  
7
SUBSONIC  
11  
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  
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.  
into  
a
socket which can be reached  
If LED stays on, please contact Audison  
authorised after sale centres.  
through the setting panel in the amplifier  
bottom.  
9
16  
SETTING PANEL  
ACCESSORIES  
Installation:  
FUNCTIONS  
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.  
Setting panel  
Remote  
First fan  
Second fan  
1 - Remove the setting panel in the  
amplifier bottom in order to carry out  
operations.  
Remote  
IN  
Remote  
OUT  
2 - Once operations have  
been carried out, please  
close the setting panel.  
+
POWER  
AMPLIFIER CONFIGURATION  
LRx 4.300 configuration occurs through two switches, IN SELECT and X-OVER, located under the setting  
panel.  
IN SELECT switch (1 IN - 2 IN) permits to use the preamplified output (OUT) as additional input (IN B). In  
this case, you will be able to realise a Front + Sub system, where IN A input drives Front, while IN B input  
accepts the possible subwoofer output, to be filtered at 24dB through F1 Slope switch in the controls  
panel and to be adjusted through the head unit Fader. IN B input can also  
+
Ground  
be used to make a full range, Front-Rear system, which will be driven by  
two full range signals by bypassing crossovers (X-OVER on OFF). These  
signals will have to be suitably filtered through external crossovers.  
Battery  
12 V  
X-OVER switch activates (ON) the two Lo-Pass and Hi-Pass filters,  
indicated by F1 and F2 respectively in the controls panel. When F1 and F2  
crossovers are off (X-OVER on OFF), you have full range signals on the  
amplifier power outputs.  
10  
15  
SETTING PANEL  
ACCESSORIES  
SUBSONIC FILTER CUT-OFF FREQUENCY MODIFICATION  
CLK2 LRx Cooling Kit  
This cooling system is specially designed to provide LRx amplifiers with the right working  
temperature.  
Subsonic filter is pre-adjusted at 20 Hz. In order to modify this value, please act according to what  
follows.  
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.  
Procedure:  
Air flux constant control allows the amplifier very good thermal stabilization and limits noise.  
Replace FS1, FS2, FS3, FS4 resistors  
according to the values in the setting  
panel table.  
Remark: Cut the new resistors  
rheophores according to the  
size in the picture.  
10 mm  
VCA-VCA1D MODULES INSERTION  
LRx 4.300 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.  
REMARK: Sub volume remote control function is on only when X-OVER switch, in the setting panel, is ON.  
Installation:  
1 - Remove BYP12 bridge.  
2 - Insert VCA/VCA1D module.  
- Insertion key. It prevents the module  
from being inserted in the wrong way.  
11  
14  
ACCESSORIES  
TECHNICAL FEATURES  
VCR01K,VCRAK and VCRDK  
SIZE FOR FIXING  
LRx 4.300 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);  
375 mm  
342 mm  
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.  
POWER  
IN OUT  
REMOTE  
Drilling dimensions for fixing  
*
FUSE  
Remote Out  
LRx 4.300  
Yellow/White  
Yellow/White  
POWER SUPPLY  
Output power (RMS) @ 13.8 VDC;THD 1%  
Blue  
- A config.: . . . . . . . . . . . . . . . . . . . . 65W x 4 (4 Ohms)  
- B config.: . . . . . . . . . . . . . . . . . . . 105W x 4 (2 Ohms)  
- C config.: . . . . . . . . . . . . . . . . . . . 210W x 2 (4 Ohms)  
- D config. (3Ch.): . . . . . 65Wx2 (4 Ohms) + 220Wx1  
(4 Ohms)  
Voltage: . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 ÷ 15 VDC  
Idling current: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.7 A  
Idling current when off: . . . . . . . . . . . . . . . . 0.02 mA  
VCR 01  
0
Consumption @ 13.8 VDC  
(Max Musical Power):  
FILTERS/INPUTS  
IN A (Front):  
Control  
min  
max  
- A config. (see Output Power): . . . . . . . . . . . 16.5 A  
- B config. (see Output Power): . . . . . . . . . . . . 32.5 A  
- C/D config. (see Output Power): . . . . . . . . . . . 28 A  
Bypass/ 12dB/Oct. Hi-Pass  
(40 ÷ 5000 Hz)  
Bypass/ 12-24dB/Oct. Lo-Pass  
(40 ÷ 5000 Hz)  
VCR01  
VCRD/VCRA  
IN B (Sub):  
Black  
Black  
Red  
FUSE  
Subsonic:  
Bypass/ 24dB/Oct. Hi-Pass, 16÷32 Hz  
(pre-set at 20 Hz)  
AMPLIFIER STAGE  
(250mA)  
Ground  
FUSE  
Red  
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:  
Pre Out (IN A):  
Inputs: . . . . . . . . . . IN A (Front) - IN B (Sub/Pre Out)  
12dB/Oct. Hi-Pass (40 ÷ 5000 Hz)  
(250mA)  
Orange  
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: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 A  
Lights  
switch  
Ground  
- 4 Ch. stereo: . . . . . . . . . . . . . . . . . . . . . . . 4 – 2 Ohms  
- 2 Ch. mono in bridge: . . . . . . . . . . . . . . . . . 4 Ohms  
+
-
Nominal output power (RMS)  
NP@ 12VDC;THD 0.3%: . . . . . . . . 60W x 4 (4 Ohms)  
Battery  
MAX SIZE (L x H x D): . . . . . . . . . 176 x 56 x 375 mm  
WEIGHT: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.6 kg  
13  
12  

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