Infinity BassLink4SC free download

File name Infinity-Basslink4SC caractsub.pdf

BassLink 4sc Amplifier Expansion Module SERVICE MANUAL Infinity Systems, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev0 12/2005 Amplifier Expansion Module BassLink 4sc - CONTENTS SPECIFICATIONS ...1 CONNECTIONS...2 CONTROLS AND FUNCTIONS...3 SETTING LEVELS/PHANTOM CENTER CHANNEL...4 BASIC TROUBLESHOOTING...6 AMPLIFIER BLOCK DIAGRAM...7 ELECTRICAL PARTS LIST ... ..8 P.C.B. DRAWINGS...12 IC/TRANSISTOR PINOUTS... 16 SCHEMATICS...17 BassLink 4sc Specifications Amplifier Power: 35W x 4 channels at 4 ohms 50W x 4 channels at 2 ohms Frequency Response: Fuse: Input Sensitivity: 90Hz to 47kHz 30A 100mV to 6V line-level input 1V to 16V universal interface Crossover Frequency: Crossover Slope: Channel Separation DC Offset Operating Voltages Current Fixed 80Hz high-pass 12dB per octave >50dB <30mV 8 - 16 VDC Remote <3.5mA Quiescent <800mA 4 ohm @ rated power 19 Amps 2 ohm @ rated power 34 Amps Infinity continually strives to update and improve existing products, as well as create new ones. The specifications and details in this and related JBL publications are therefore subject to change without notice. 1 Amplifier Expansion Module BassLink 4sc CONNECTIONS Note: In order for the Phantom Center circuit to operate properly, the speakers and input wires MUST be connected in proper polarity! SPEAKER CONNECTIONS Connect the speakers to the FRONT and REAR screw terminals, observing proper polarity (Figure 3). Figure 3. INPUT CONNECTIONS You must connect full-range signal to all four inputs on BassLink II (if you are using the 4sc). Do not connect a subwoofer output to any of the inputs if you are using the 4sc. Connect the input signal wires according to Figures 3a through 3d. If your source unit provides only speaker-level output wires, connect those wires to the Universal Interface connections as shown in Figures 3a or 3b. If your source unit provides line-level outputs with RCA-type connectors, connect the signal cables to the FRONT and REAR LINE LEVEL inputs as shown in Figure 3c or 3d. Note: If your source unit provides two line-level outputs and two speaker-level outputs, you may connect the line-level output to the appropriate (front or rear) RCA-type input and the speakerlevel outputs to the other (front or rear) Universal Interface connector. 3a. RR LR 3c. Rear Remote Level Control Front 4-Channel Speaker Outputs (from Source Unit) Remote Level Control 4-Channel Line-Level Outputs (from Source Unit) 3b. 3d. BassLink II Remote Level Control Source Unit Remote Level Control 2-Channel Speaker Outputs (from Source Unit) Remote Level Control LF RF BassLink 4sc 2-Channel Line-Lev