202a 2-Ch Power Amplifier Owner’s Manual Installation Guide
KAPPA 202A POWER AMPLIFIER The Kappa 202a is a member of Infinity’s new Kappa series of mobile power amplifiers. Housed within the sleek, extruded aluminum frame, you’ll find the latest advances in circuit topology, along with user conveniences like a wide-range input sensitivity control, auxiliary outputs, and a built-in electronic crossover.
APPLICATIONS For your convenience, we’ve included several application diagrams to help you plan your own system installation. Figures 1 through 3 show how to configure the Kappa 202a for stereo, bridged-mono, and tri-mode operation. Figure 1. This wiring diagram shows a Kappa 202a amplifier set to stereo to drive a pair of full-range speakers. For system expansion ideas, see the next page. NOTE: For simplicity, Figures 1 through 3 do not show power, remote, and input connections.
SYSTEM EXPANSION KAPPA 52a 5 1 ⁄4" Speakers + L/R Inputs Figure 4. In this example system, a Kappa 52a drives a pair of 5 1⁄4" speakers. The 102a’s stereo low-pass outputs feed a bridgedmono Kappa 102a to drive a single 12" subwoofer. L/R Outputs (Low-Pass) + KAPPA 102a 12" Subwoofer L/R Inputs + KAPPA 52a 1" Tweeter 4" Midrange System - L/R Inputs Figure 5. In this expanded system, a Kappa 52a drives a pair of component systems.
PRECAUTIONS AND NOTES • The Kappa 202a has five levels of circuit protection that monitor the amplifier and will shut it down if the electrical system voltage drops below 10 Vdc or exceeds 15.5 Vdc, temperatures are above 194° F (90° C), short circuits occur, or current draw exceeds product specifications. For best performance, check the intended mounting site to make sure the operating environment does not create conditions that will trigger circuit protection.
INSTALLATION The Kappa 202a is easy to install. For optimum performance, we recommend using high-quality, twistedpair shielded RCA audio cables and 14-gauge or larger speaker wire. Also, you’ll need a minimum of 12-gauge stranded copper wire (e.g., red and black jackets) for the power connections. Use 18-gauge (e.g., blue jacket) wire for remote turn-on. MOUNTING THE AMPLIFIER...
INSTALLATION (continued) 3. Make sure the wires are firmly seated in each Weco 2-pin connector and that each screw is completely tightened. Insert the wired connectors into the POWER sockets on the amplifier. Press each one in until it stops. SETTING INPUT SENSITIVITY... 4. Using the Weco 5-pin connector, connect a blue wire from the source unit’s remote connection to the REM terminal. Depending on polarity requirements (e.g.
TROUBLESHOOTING Use the following guide to identify symptoms and solve problems. Make sure the vehicle’s electrical system is working properly and power is reaching the Kappa 202a (i.e., green LEDs on the top panel are on).
