Harman Kardon PA2400 Owners Manual - Page 6
Connect, follows, Setting, Speaker, Operating, Switches, Bridged, Operation, Warranty, After,
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Connect as follows: 1. Remove about 3/4 inch (20mm) of insulation from the end of each wire and twist the strands of each conductor. 2. After making sure of the correct channel and polarity, loosen the SPEAKER terminal knob and insert the conductor directly into the recess at the upper-left of the terminal. Then tighten the terminal knob, and the end of speaker wire is automatically wound around the terminal. 0 Setting the Speaker Operating Mode Switches These switches, located in the top right corner of the back panel, optimizes the amplifier for the best possible operation with your speakers. It is extremely important that you set these switches before playing your speakers. First, determine the impedance of your speakers. The impedance may be noted on the back of the speaker or in the owner's manual. If not, call the dealer or manufacturer to find out the impedance. If you are using set of 8 ohm speakers, set both of the "Speaker Operating Mode" switches to 852 position. In all other cases, use the 452 positions. If you are in doubt about the impedance of your speakers, use the 4Q positions, since the power amplifier runs cooler in this mode. Having these switches set to 8Q if you are using 4 ohm or 6 ohm speakers may result in overheating of the amplifier or failure of an internal fuse. Bridged Mono Operation This feature permits both amplifier channels to drive one 852 loudspeaker. To operate the amplifier in this way, set both of the "Speaker Operating Mode" switches to the 4Q positions, set the "Bridged Mono" switch in the "On" position and connect one channel of the preamplifier output to the amplifier's left input jack. Then connect the amplifier's Left (Mono +) speaker terminal to the loudspeaker's "+" wire and the amplifier's Right (Mono -) speaker terminal to the loudspeaker's -" wire. Please note: The amplifier is not designed to drive a 412 speaker in the Bridged Mono mode. Warranty and After-sale Service (USA Customers Only) ■ Please find the warranty card enclosed with this unit when you purchased it. ■ After filling in the required items and reading the contents of the warranty card, keep it in a safe place. ■ The warranty term is two years after date of purchase. ■ If this unit does not appear to operate normally, read this manual following the instructions carefully and operate the unit again. ■ If a problem persists even though you have done according to the manual, consult your authorized Harman Kardon service station. ■ Repair within the warranty term is made according to the conditions specified in the warranty card. 5