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- safety signs and mark certificates which confirm compatibility with appropriate standards
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Table of contents for the manual
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OWNER’S MANUAL CAR POWER AMPLIFIER PRINTED IN IT AL Y - Code 10125770 62018 P otenza Picena (MC) Italy T el. 0733.870870 • Fax 0733.870880 • http://www .audison.com • e -mail: com@audison.com is a division of Audison measuremen t standards (Po wer measures taken accor ding to audison standard, 1998 edition) - 12VDC and 13.8VDC; - 1 kHz or c[...]
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2 INTRODUCTION INTRODUCTION Audison thanks you f or preferring this product and compliments you on y our choice since it was designed in order to insure outstanding musical and instrumental performances. Before use instructions, please carefully read the safety norms you ha ve to respect in order to a void unpleasant inconv eniences and to enjoy th[...]
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3 C ONTENTS Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 4 In-Out panel Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]
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4 DESCRIPTION Audison LRx 4.300: F our channel car power amplifier characterised by ex cellent musical performances, small size and outstanding energy reserve. Its PWM power supply stage is made with two pairs of 70A MOSFET s; it is stabilised and oversiz e. Input stage is provided with a special circuit (LNS) which permits the system disturbanc es[...]
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PPS (Phantom P ower Supply) Po wer supply socket for audison external audio accessories. 2 IN B/OUT Lef t ( L ) and right ( R ) inputs of the amplifier B channels or amplifier HI/BYP ASS preamplified outputs (see “ Configurations table ” ). Connect only the right ( R ) channel input in order to use the amplifier in mono. 4 IN A Lef t ( L ) and [...]
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6 POWER SUPPL Y P ANEL REMO TE IN T erminal to connect Remote cable, which comes from the source and which controls the amplifier swit ching on. Applied voltage must be between 7 and 15VDC. 1 REMO TE OUT T erminal to repeat the switching on contr ol (Remote IN) coming from the source . I t is used to switch on another amplifier or device in the sys[...]
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7 7 POWER SUPPL Y P ANEL 1 - Open the transparent cov er by pushing the two teeth in its lowest corners to the dir ection indicated by the arrows. 4 - Close the transparent cov er . 3 - Check the value of the new fuse to assemble , then fix it by gradually and alternately fastening the tw o screws. This will avoid v oltage drops along the line and [...]
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8 C ONTROLS P ANEL 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 limit er) will anyway allow the amplifier to function without distortions. In case Overload Limiter gets on too[...]
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9 C ONTROLS P ANEL F1 It permits to adjust L O-P ASS filter cut-off frequency between 40 Hz and 5 kHz. 9 F2 It permits to adjust 12dB/Oct. HI-P ASS filter cut-off frequency between 40 Hz and 5 kHz. 10 F1 SL OPE It permits to choose L O-P ASS filter slope between 12dB/Oct. (stereo) and 24dB/Oct. (mono, L+R). 8 B CHANNELS (Lev el) It adjusts the ampl[...]
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SET TING P ANEL 10 It permits to reach the switches for the amplifier configuration, the resistors to set subsonic filter cut-off frequency and to inser t VCA modules for the subwoofer volume r emote control. AMPLIFIER C ONFIGURA TION A C CESSORIES 15 LRx 4.300 configuration occurs through two swit ches, IN SELECT and X-OVER , located under the set[...]
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11 SET TING P ANEL SUBSONIC FIL TER CUT-OFF FREQUENCY MODIFICA TION Replace FS1, FS2, FS3, FS4 resistors according to the v alues in the setting panel table. 10 mm 5 mm Remark: Cut the new resistors rheophores according to the size in the picture. Proc edure: VCA-V CA1D MODULES INSERTION LRx 4.300 can accept one of the three optional kits which all[...]
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Remote Out IN OUT REMOTE FUSE POWER - + Batter y VCR 01 Control Y ellow/White VCRD/V CRA VCR01 Y ellow/White Blue Black Black (250mA) Red Red (250mA) Orange Lights switch FUSE Ground Ground min max 0 FUSE 13 A C CESSORIES LRx 4.300 can accept one of the optional kits that allow the subwoofer volume r emote control. VCR01K and VCRAK are analogue and[...]