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54a 4-Ch Power Amplifier
Owner’s Manual
Installation Guide
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KAPPA 54A POWER AMPLIFIER The Kappa 54a is a member of Infinity’s new Kappa series A BOUT T HIS M ANUAL ... of mobile power amplifiers. Housed within the sleek, To attain maximum amplifier performance, we encourage extruded aluminum frame, you’ll find the latest advances in you to read the remaining pages before installing and circuit topology, along with user conveniences like a wide- operating your new Infinity Kappa Power Amplifier. range input sensitivity control, auxiliary outputs, and a Es
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APPLICATIONS For your convenience, we’ve included several application For system expansion ideas, see the next page. diagrams to help you plan your own system installation. NOTE: For simplicity, Figures 1 through 3 do not show power, Figures 1 through 3 show how to configure the Kappa 54a remote, and input connections. for stereo, bridged-mono, and tri-mode operation. Figure 1. This wiring Set Front Mode Set Rear Mode diagram shows a To STEREO To STEREO Kappa 54a amplifier (on top panel) (on
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SYSTEM EXPANSION 5 1 ⁄4" Speakers KAPPA 54a (Hi-Pass, F & R) - - + + L/R Inputs Figure 4. In this example system, a L/R Outputs Kappa 54a drives (F+R Sum) front and rear pairs of Front - - 5 1⁄4" speakers. The 54a’s stereo front and + + rear outputs are summed to feed a Rear KAPPA 202a bridged-mono Kappa 202a that drives a 12" Subwoofer single 12" subwoofer. L/R Inputs - + Front (Hi-Pass) 5 1 ⁄4" Speakers Rear (Hi-Pass) 1" Twt. 4" Mid. KAPPA 54a Systems - - + + L/R Inputs Figure 5. In this L/
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PRECAUTIONS AND NOTES • The Kappa 54a has five levels of circuit protection that • Always wear protective eyewear when using tools. monitor the amplifier and will shut it down if the • The Kappa 54a uses gold-plated, industrial-grade Weco® electrical system voltage drops below 10 Vdc or exceeds plug-in connectors for power and speaker wiring. Because 15.5 Vdc, temperatures are above 194° F (90° C), short of precision tolerances, do not insert the connectors into circuits occur, or current draw e
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INSTALLATION The Kappa 54a is easy to install. For optimum M OUNTING T HE A MPLIFIER ... performance, we recommend using high-quality, twisted- The Kappa 54a can be mounted in virtually any location pair shielded RCA audio cables and 14-gauge or larger inside the vehicle. However, make sure to keep the speaker wire. Also, you’ll need a minimum of 12-gauge amplifier away from heater vents or ducts. stranded copper wire (e.g., red and black jackets) for the power connections. Use 18-gauge (e.g., b
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INSTALLATION (continued) 3. Make sure the wires are firmly seated in the Weco 2-pin S ETTING I NPUT S ENSITIVITY ... connector and that each screw is completely tightened. Initially, turn the front and rear input sensitivity GAIN Insert the wired connector into the POWER socket on the controls to their minimum (counter-clockwise) positions amplifier. Press it in until it stops. (refer to Figure 8). 4. Using the Weco 5-pin connector, connect a blue wire from 1. Reconnect the (–) negative lead t
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TROUBLESHOOTING Use the following guide to identify symptoms and solve SYMPTOM LIKELY CAUSE SOLUTION problems. Make sure the vehicle’s electrical system is Audio cycles A protection circuit Verify the following– working properly and power is reaching the Kappa 54a (i.e., off and on; is turning the electrical system is green LEDs on the top panel are on). Amber protec- amplifier off and on between 10 ~ 15.5 Vdc; tion LEDs (on temperature is not SYMPTOM LIKELY CAUSE SOLUTION top panel) are on o
