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202a 2-Ch Power Amplifier
Owner’s Manual
Installation Guide
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KAPPA 202A POWER AMPLIFIER The Kappa 202a is a member of Infinity’s new Kappa All Infinity Automotive Products carry a limited parts series of mobile power amplifiers. Housed within the and labor warranty (see the enclosed warranty card), so sleek, extruded aluminum frame, you’ll find the latest retain the bill of sale to protect your purchase and to aid advances in circuit topology, along with user us with any service-related questions you may have. conveniences like a wide-range input sensitiv
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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 202a remote, and input connections. for stereo, bridged-mono, and tri-mode operation. Figure 1. This wiring diagram Set Mode Switch shows a Kappa 202a amplifier To STEREO set to stereo to drive a pair of (on
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SYSTEM EXPANSION KAPPA 52a 5 1 ⁄4" Speakers - + L/R Inputs Figure 4. In this example L/R Outputs system, a Kappa 52a drives 1 (Low-Pass) a pair of 5 ⁄4" speakers. - The 102a’s stereo low-pass outputs feed a bridged- + mono Kappa 102a to drive a single 12" subwoofer. KAPPA 102a 12" Subwoofer L/R Inputs - + 1" Tweeter 4" Midrange System KAPPA 52a - + L/R Inputs 1" Tweeter Figure 5. In this expanded 4" Midrange L/R Outputs system, a Kappa 52a drives System (Low-Pass) a pair of component systems.
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PRECAUTIONS AND NOTES • The Kappa 202a has five levels of circuit protection • Always wear protective eyewear when using tools. that monitor the amplifier and will shut it down if the • The Kappa 202a uses gold-plated, industrial-grade electrical system voltage drops below 10 Vdc or ® Weco plug-in connectors for power and speaker exceeds 15.5 Vdc, temperatures are above 194° F (90° wiring. Because of precision tolerances, do not insert C), short circuits occur, or current draw exceeds the connec
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INSTALLATION The Kappa 202a is easy to install. For optimum M OUNTING T HE A MPLIFIER ... performance, we recommend using high-quality, twisted- The Kappa 202a 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.,
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INSTALLATION (continued) 3. Make sure the wires are firmly seated in each Weco S ETTING I NPUT S ENSITIVITY... 2-pin connector and that each screw is completely Initially, turn the input sensitivity GAIN control to its tightened. Insert the wired connectors into the POWER minimum (counter-clockwise) position (refer to Figure 8). sockets on the amplifier. Press each one in until it stops. 1. Reconnect the (–) negative lead to your vehicle’s 4. Using the Weco 5-pin connector, connect a blue wire
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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 202a off and on; is turning the electrical system is (i.e., 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
