User manual INFINITY 5350A

[. . . ] To replace the panel, align the fasteners and press downward gently. Amplifier's trim panel. POWER CONNECTIONS GROUND CONNECTION Connect the amplifier's ground (GND) terminal to a solid point on the vehicle's metal chassis, as close to the amplifier as possible. Refer to the chart to the right to determine minimum wiregauge size. Sand away any paint from this location; use a star-type-lock washer to secure the connection. [. . . ] Reference 1300a or 1600a amplifier with one woofer connection. NOTE: Minimum impedance of subwoofer = 2 ohms reference series 3 APPLICATIONS ­ 475a The 475a can be set up for stereo 4-channel, 3-channel or bridged 2-channel operation, as shown in Figures 5 through 8. NOTE: · Minimum speaker impedance for stereo operation is 2 ohms. Minimum speaker impedance for bridged operation is 4 ohms. · Not all possible applications are shown here; e. g. , the applications shown in Figures 5, 6 or 8 could include a separate subwoofer driven by an additional amplifier. In that case, the user should refer to Figure 6 for crossover and sub amp connection suggestions. To Head Unit Rear Output Figure 5. Note crossover and channel assignment settings. To Head Unit Front Output Front Speakers Rear Speakers To Head Unit Rear Output Figure 6. 475a connected to four satellite speakers and used in conjunction with an additional subwoofer amplifier or powered subwoofer. Note crossover and channel assignment settings. To Sub Amp To Head Unit Front Output Front Speakers Rear Speakers 4 APPLICATIONS ­ 475a To Head Unit Sub Output Figure 7. 475a connected in tri-mode to a subwoofer and a pair of satellite speakers. Note crossover and channel assignment settings. To Head Unit Front Output Front Speakers Subwoofer To Head Unit Right Figure 8. 475a connected in bridge mode to a pair of full-range speakers. Note crossover and channel assignment settings. To Head Unit Left Left Speaker Right Speaker reference series 5 APPLICATIONS ­ 5350a The 5350a can be configured for 5-channel or 3-channel operation, as shown in Figures 9 and 10. INPUT MODE SWITCH: · Use INT (internal mode) to send a signal from the front and rear inputs to the subwoofer. · Use EXT (external mode) when sending a dedicated signal to the subwoofer inputs; e. g. , if your source unit has a subwoofer output. NOTE: Minimum speaker impedance for stereo operation is 2 ohms. Minimum speaker impedance for bridged operation is 4 ohms. Minimum impedance of any subwoofer or combination of subwoofers is 2 ohms. To Head Unit Front To Head Unit Rear Figure 9. 5350a connected to four satellite speakers and a single subwoofer. Note crossover and channel assignment settings. NOTE: If head unit has only two preamp outputs, do not connect to rear, and place rear input source switch in the FRONT position. NOTE: If head unit includes a separate subwoofer output, connect it here and place switch in EXT position. Rear Speakers Subwoofer Front Speakers To Head Unit Front Output Figure 10. 5350a connected in bridge (3-channel) mode to a pair of satellite speakers and a subwoofer. Note crossover and channel assignment settings. NOTE: If head unit includes a separate subwoofer output, connect it here and place switch in EXT position. Left Speaker Right Speaker Subwoofer 6 INSTALLATION AND SETUP Refer to the illustrations on the previous pages for control location. Reconnect the (­) negative lead to the vehicle's battery. [. . . ] Amplifier may need service; see enclosed warranty card for service information. · PROBLEM: No audio (PROTECT LED glows red). CAUSE and SOLUTION: Amplifier is overheated. Make sure amplifier cooling is not blocked at mounting location; verify that speaker-system impedance is within specified limits. [. . . ]