BassLink I I ® in tions ruc st Universal Interface R R E A R _ Line Level Input L R E A R Auto Turn On AUTO OFF Servo + R F R O N T F R O N T REM Phase L L R 180 Power Fuse 25A 0 Gnd Rem +Batt BassLink I I ® INTRODUCTION THANK YOU for choosing the Infinity BassLink II powered subwoofer. BassLink II has been designed to provide the kind of high-performance lowfrequency reproduction that used to require big, clumsy enclosures, large amplifiers and complex installation. To ensure maximum performance, we strongly recommend that installation be entrusted to a qualified professional. Although these instructions explain how to install the BassLink II in a general sense, they do not show the specific installation methods for your particular vehicle. If you feel you do not have the necessary tools or experience, do not attempt the installation yourself; rather, ask your authorized Infinity car audio dealer about professional installation options. ® ® CHOOSING A MOUNTING LOCATION Choose a mounting location that doesn't interfere with cargo, fold-down rear seats or the trunk lid. The best location is usually a corner of the trunk or cargo area, as shown in Figures 1 and 2. These locations, in addition to being out of the way, will provide the best sonic reproduction in the 60Hz to 100Hz range because the woofer output will be "corner loaded" against the vehicle's walls. In any case, BassLink II must not interfere with the safe operation of the vehicle. Figure 1. BassLink II in a car's trunk. MOUNTING BASSLINK II CAUTION: Make sure mounting screws will not puncture wiring harnesses, brake or fuel lines, or the vehicle's fuel tank. Some or all of these may be located behind or under the mounting surface. VERTICAL MOUNTING Position BassLink II so that the heatsink is facing down and the bottom of the unit is up. Align the mounting feet as shown in Figure 3. Secure the feet using the supplied machine screws. Place BassLink II (with its feet) so the controls are easy to adjust. Securely mount BassLink II to the mounting surface with the four enclosed selftapping screws. Figure 3. Vertical mounting of BassLink II. HORIZONTAL MOUNTING Position BassLink II so that the controls are facing down and the back of the unit is up. Align the mounting feet as shown in Figure 4. Secure the feet using the supplied machine screws. Securely mount BassLink II to the mounting surface using the four enclosed self-tapping screws. Figure 4. Horizontal mounting of BassLink II. Remember to keep this manual and your sales receipt in a safe place for future reference. HEARING WARNING! Playing loud music in a vehicle can permanently damage your hearing, as well as hinder your ability to hear traffic. We recommend using low volume levels while driving. Infinity accepts no liability for hearing loss, bodily injury or property damage resulting from the use or misuse of this product. YOUR CAR AND BASS REPRODUCTION Depending on the interior volume of your vehicle and the dimensions of the passenger compartment and cargo area, reproduced frequencies below 80Hz may be boosted by nearly 12dB per octave as frequency decreases.This effect, known as the vehicle's "transfer function" or "cabin gain, plays " an important part in shaping the overall in-car response of the BassLink II. BassLink II is designed to work with your vehicle's other speakers to reproduce frequencies below 100Hz. Moreover, depending on orientation and mounting location, BassLink II may be "in phase" or "out of phase" with those speakers. The resulting conditions, known as constructive and destructive interference, also play a role in shaping the total frequency response of your system. Fortunately, BassLink II has controls to optimize both of these conditions, and their adjustment is explained later in the manual. Figure 2. BassLink II in an SUV's cargo area. 2 POWER CONNECTIONS Make Power, Ground and Remote Turn-On connections as shown in Figure 5. Observe the following installation tips: · Use #8 AWG wire for the +BATT (+12Vdc) and GND (ground) connections. If needed, use at least a #20 AWG wire for the REM (remote) connection. · If you pass the power or remote wire through the vehicle's firewall or other metal obstruction, it must be insulated with a rubber grommet. If a factory-installed grommet is unavailable, be sure to install a rubber grommet to protect the wires. · Connect a short ground wire from BassLink II to the nearest bare metal surface. For a good connection, sand away paint from the metal surface and use a screw with a (star) lock washer. Figure 5. Power connections for BassLink II. · Install a fuse holder with a 25A fuse within 18" of the battery + terminal (see Figure 5). · The REM connection requires +5 to +12Vdc for BassLink II to turn on remotely. Most head units with preamp outputs provide this remote voltage signal. For speaker-level applications, a remote connection is not required, since BassLink II's Auto Turn On feature will sense voltage on the speaker wires to automatically turn on BassLink II. IMPORTANT: To enable BassLink II's Auto Turn On feature, set AUTO TURN ON to the AUTO position (see Figure 15 on page 6). APPLICATIONS BassLink II is equipped with four line-level (RCA) inputs and four speaker-level inputs. Any combination of line-level and speaker-level inputs may be used to provide nonfading bass when connected to a head unit with four outputs. Figure 6. BassLink II audio connections for a head unit with two line-level or subwoofer (RCA) outputs. To help you plan your installation, we have included three system applications in Figures 6 through 8. For more system ideas, see your authorized Infinity car audio dealer. Note: The applications show the REMOTE LEVEL control, which installs under the dashboard for easy in-car bass level adjustments (see page 7). BassLink I I ® 3 APPLICATIONS (CONTINUED) Figure 7. BassLink II audio connections for a head unit equipped with four line-level (RCA) outputs. Figure 8. BassLink II audio connections for a head unit equipped with four speaker-level outputs. BassLink II (right side) BassLink II (right side) LF Speaker RF Speaker ­ + RCA Stereo Cables (not supplied) ­ + ­ + Source Unit ­ + LR Speaker RR Speaker 4 BASSLINK 4SC INSTALLATION DESCRIPTION The BassLink 4sc is a plug-and-play amplifier designed to make upgrading your system easy. The BassLink 4sc is designed to slide into an available slot in the BassLink II. Unlike an additional outboard amplifier, the BassLink 4sc doesn't require any additional space. The BassLink 4sc also includes a Phantom Center effect, which creates the illusion of a center channel even if no center speaker is installed. INSTALLATION 1. Remove the wiring cover from BassLink II. 2. Remove the eight screws that hold the AMPLIFIER DOCK cover panel in place (Figure 9). Save the screws. 3. Remove the screw that attaches the two wiring harnesses and connectors to the panel. 4. Connect the wiring harness connectors to the appropriate connectors on the BassLink 4sc's circuit board. See Figure 10. 5. Insert the amplifier and install the eight screws that were removed in Step 2. See Figure 10. 6. Install 40A fuse at the battery. Note: All four inputs on BassLink II must be used in order for the BassLink 4sc amplifier to function properly. Figure 9. CONNECTIONS Connect the front and rear speakers as shown in Figure 11. Figure 11. Left ­ Front ­ Right APPLICATION Figure 13. Typical installation using all four speakerlevel inputs from the source unit. RR LF BassLink II (right side) ­ + + RF + + LR ­ + Figure 10. Left ­ Front Right ­ Right ­ Rear Left For proper setup, please refer to the full BassLink 4sc owner's manual. Figure 12. + SETTINGS The BassLink 4sc has input level control for the front and rear speakers and PHANTOM CENTER controls. ­ + + + + ­ ­ ­ ­ BassLink I I ® 5 + + CONTROLS AND FUNCTIONS BassLink II provides several controls and indicators that simplify sonic integration with virtually any vehicle's unique acoustic properties. They are located on the front and side panels, as shown in Figures 14 and 15. Figure 14. BassLink II controls on the front panel. PHASE Control: Use this switch to reverse the phase of BassLink II's output with respect to its input. Choose the position (0° or 180°) that sounds the best. Note: Depending on BassLink II's orientation and location in a vehicle, reversing the phase may, or may not, increase or decrease the amount of upper bass being reproduced. POWER LED:This indicator will glow blue when BassLink II is operational. GAIN Control: Use this control to adjust the relative volume (loudness) of BassLink II with respect to the other speakers in the vehicle. CROSSOVER: Use this control to adjust the amount of high-frequency information present in BassLink II's output. A lower value means more of the high frequencies are filtered out. BASS BOOST: Use this control to correct any perceived peak or dip in the bass response (typically around 40Hz in most vehicles). Set the control to any value between ­6dB and +3dB, according to what sounds best. AUTO TURN ON: For speaker-level connections, use this switch to activate (or deactivate) BassLink II's automatic turn-on circuit. For most speaker-level applications, slide the switch to AUTO. However, if your system produces false turn-on signals or uses a remote (REM) connection, slide the switch to OFF . REMOTE LEVEL Control: Use this RJ11 jack to connect the REMOTE LEVEL control (see page 7). SERVO LED:This indicator glows blue when the subwoofer is at maximum excursion and the amplifier is modifying the output to maintain maximum performance. Be sure to monitor this indicator during BassLink II setup (see Tuning BassLink II). When properly tuned, the SERVO LED should light momentarily during high-level bass transients. Avoid adjustments that cause the LED to remain lit for extended periods. Figure 15. BassLink II controls on right-side panel. TUNING BASSLINK II 1. Unplug the RJ11 cable that connects the REMOTE LEVEL control to BassLink II. 2. Make sure the head unit is off and its volume control is set to minimum. 3. On BassLink II's front panel, initially set all controls to their midpoint positions, as shown in Figure 14. On BassLink II's side panel, initially set PHASE to 0° as shown , in Figure 15. 4. Turn on the head unit and play a favorite music track that has substantial bass. Set the head unit's volume control to 75 percent of the total output (approximately 3 o'clock on rotary controls). 5. Adjust the GAIN control clockwise until the SERVO LED (on BassLink II's side panel) begins to flash with each bass note but doesn't stay lit continuously. 6. Listen to your system, making a mental note of the amount of upper bass being reproduced. 7. Switch the PHASE control to 180° and listen again for upper bass content. There may be more upper bass, less upper bass, or no change at all. The position that provides the most upper bass is correct, but choose either setting according to your taste. 8. Adjust the CROSSOVER control clockwise or counterclockwise until you hear only lowfrequency information. For example, you should NOT hear any vocals coming from BassLink II when seated in the normal listening position. 9. Adjust the BASS BOOST control clockwise or counterclockwise to suit your taste. 10. Recheck the SERVO LED to make sure it's flashing in time with the bass but is not lit continuously. If it is lit continuously, adjust the GAIN control counterclockwise until the SERVO LED only flashes in time with the bass. 11. Reconnect the RJ11 cable between the REMOTE LEVEL control and BassLink II. You may then use the REMOTE LEVEL control to adjust the level of the bass to suit your taste and/or different program material. Note: In most cases, the above steps will provide satisfactory tuning. However, the actual process may require several readjustments of each control, since the settings will interact with each other. If necessary, consult your authorized Infinity car audio dealer for help in tuning your system. 6 INSTALLATION The REMOTE LEVEL control may be mounted under the dash or may be dismantled and mounted in the dash for a factory appearance. UNDER-DASH MOUNTING Select a mounting location that allows easy access to the control while driving. Using the REMOTE LEVEL control as a template, mark and drill holes in the mounting surface. Attach the REMOTE LEVEL control using the mounting screws provided (Figure 16). Figure 16. Under-dash mounting of the REMOTE LEVEL control. CONNECTING THE REMOTE LEVEL CONTROL TO BASSLINK II Route the cable behind the dash or other interior panels and under the carpet. Do not route the cable outside the vehicle. Connect the RJ11 cable between the RJ11 receptacle on the BassLink II and the receptacle on the REMOTE LEVEL control (Figure 17). Figure 17. REMOTE LEVEL control electrical connection. OPERATION The REMOTE LEVEL ...