OWNER’S MANUAL CAR POWER AMPLIFIER
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.
CONTENTS Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 4 In-Out panel Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Power supply panel Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DESCRIPTION Audison LRx 1.400: Mono car power amplifier characterised by excellent musical performances, small size and outstanding energy reserve. Its PWM power supply stage is stabilised and oversize. Thanks to its great capacity to supply current and to the use of three 70A Mosfets pairs, this amplifier can easily drive even the hardest loads.
IN-OUT PANEL FUNCTIONS 1 SPEAKER A/B (LO-BYPASS) Amplifier power outputs. Signal is MONO. The two outputs are in parallel in order to allow the connection of one, two or more speakers. 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.
POWER SUPPLY PANEL FUNCTIONS 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. 2 POWER IN OUT REMOTE 1 3 FUSE 2 4 5 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.
POWER SUPPLY PANEL FUSE REPLACEMENT 1 - Open the transparent cover by pushing the two teeth in its lowest corners to the direction indicated by the arrows. 2 - Remove the screws which fasten the fuse to eliminate pieces of the broken one; prevent them from going into the device. 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.
CONTROLS PANEL FUNCTIONS AND CONTROLS 1 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.
CONTROLS PANEL 4 8 LO-PASS It permits to choose whether to send a full range signal (BYPASS) or a 24dB/Oct. LO-PASS signal for low frequencies (ON) to the amplifier stage. F1 Q It permits to adjust the LO-PASS filter Q, varying the filter gain at its cut-off frequency. It is useful to linearise the system response in the HI-PASS and LO-PASS crossover point.
SETTING PANEL FUNCTIONS It permits to reach the resistors to set subsonic filter cut-off frequency and to insert VCA modules for the subwoofer volume remote control. Setting panel 1 - Remove the setting panel in the amplifier bottom in order to carry out operations. 2 - Once operations have been carried out, please close the setting panel.
SETTING PANEL SUBSONIC FILTER CUT-OFF FREQUENCY MODIFICATION Subsonic filter is pre-adjusted at 20 Hz. In order to modify this value, please act according to what follows. Procedure: FS2 FS3 FS1 FS4 15K 100K 39K 33K VCA 5 mm Replace FS1, FS2, FS3, FS4 resistors according to the values in the setting panel table. 10 mm Remark: Cut the new resistors rheophores according to the size in the picture. VCA-VCA1D MODULES INSERTION LRx 1.
TECHNICAL FEATURES SIZE FOR FIXING * Drilling dimensions for fixing LRx 1.400 POWER SUPPLY Voltage: . . . . . . . . . . . . . . . . . . . . . . . . . . 11 ÷ 15 VDC Idling current:. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.9 A Idling current when off: . . . . . . . . . . . . . . . 0.02 mA Output power (RMS) @ 13.8 VDC; THD 1% - A config.: . . . . . . . . . . . . . . . . . . . 350W x 1 (4 Ohm) - B config.: . . . . . . . . . . . . . . . . . . . 650W x 1 (2 Ohm) - C config.: . . . . . . . . .
ACCESSORIES VCR01K,VCRAK and VCRDK LRx 1.400 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.
ACCESSORIES CLK2 - LRx Cooling Kit 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.
ACCESSORIES Installation: Remote First fan Second fan Remote IN Remote OUT + POWER + 12 V 15
R L L N S R OUT HI/BYPASS L IN 16 NON INDEPENDENT FREQUENCY CONTROL mute HI-PASS MIX + R INDEPENDENT FREQUENCY CONTROL Hz 12dB / stereo F2 R Channel only L Hz 24dB / mono F1 HI-PASS F1 LO-PASS Adj.
CONFIGURATIONS CONFIGURATIONS TABLE LRx 1.400 can be configured as follows: Config. 1 = Speaker A/B (Full Range); Pre Out (Full Range) Config. 2 = Speaker A/B (Full Range); Pre Out (Hi 12 dB) Config. 3 = Speaker A/B (Lo 24 dB); Pre Out (Full Range) Config.
CONFIGURATION EXAMPLES FRONT+SUBWOOFER FRONT (DUAL MONO)+SUBWOOFER 18
CONFIGURATION EXAMPLES FRONT (DUAL MONO) Pre Out Right Left LRx 1.400 Config. 1/2 LRx 1.400 Config. 1/2 + Woofer + Midrange Tweeter Woofer Left Midrange Tweeter Right FRONT + REAR + SUBWOOFER Pre Out Rear + + Tweeter Tweeter Woofer + Woofer Rear + + Tweeter Tweeter Woofer LRx2 + Front Woofer Front Config. 1/2/3/4/6 19 LRx2 Config. 2/4/6 Subwoofer Subwoofer LRx 1.400 Config.
CONFIGURATION EXAMPLES MULTICHANNEL Pre Out Left Right LRx1.400 Config. 4 LRx1.400 Config. 4 + + Subwoofer + + Subwoofer Subwoofer LRx1.400 Config. 4 Subwoofer LRx1.400 Config. 4 + + + + Woofer Woofer Woofer Woofer LRx2 LRx2 Config. 2/4/6 Config.
INSTALLATION LOGO ROTATION 1 - Remove the transparent cover which protects controls and then the 4 screws which block the metal plate by using multispanner. 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.
INSTALLATION AMPLIFIER FIXING 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”).
INSTALLATION audison cable PRODUCTS FOR ELECTRIC CONNECTIONS 23
Audison measurement standards (Power measures taken according to audison standard, 1998 edition) PRINTED IN ITALY - Code 10125750 - 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.
