User manual KENWOOD KAC-HQR8400

[. . . ] When the protection function is triggered, the PROTECTION indicator lights and the amplifier stops operating. • When a speaker wire may be short-circuited. • When a speaker output contacts ground. • When the unit malfunctions and a DC signal is sent to the speaker output. NOTE • If you experience problems during installation, consult your Kenwood dealer. [. . . ] • Be sure to install a protective fuse in the power cord near the battery. The protective fuse should be the same capacity as the unit’s fuse capacity or somewhat larger. • For the power cord and ground, use a vehicle type (fireproof ) power wring cord with a current capacity greater than the unit’s fuse capacity. (Use a power wiring cord with the range of 14 mm2 (AWG 6) to 21 mm2 (AWG 4). • When more than one power amplifier are going to be used, use a power supply wiring wire and protective fuse of greater current-handling capacity than the total maximum current drawn by each amplifier. Wiring Speaker Selection • The rated input power of the speakers that are going to be connected should be greater than the maximum output power (in Watts) of the amplifier. Use of speakers having input power ratings that are less than the output power of the amplifier will cause smoke to be emitted as well as damage. • Use speakers that have an impedance of 1Ω or greater. When more than one set of speakers are going to be used, calculate the combined impedance of the speakers and then connect suitable speakers to the amplifier. 4Ω 4Ω 4Ω 4Ω 8Ω 4Ω 4Ω 4Ω 4Ω 4Ω 8Ω 2Ω 4Ω Combined impedance 4Ω 4Ω 2Ω 4Ω 4Ω 4Ω 4Ω 4Ω 4Ω 4Ω 4Ω  English KAC-HQR8400_M_1English. indd 2 08. 10. 21 3:57:09 PM Installation Accessories 380 mm 320 mm Part name Self-tapping screws (ø5 × 18 mm) Hexagon Wrench (Large) Hexagon Wrench (Small) Terminal cover (Power terminal) Remote cable (6. 0 m) Remote controller Mounting bracket Self-tapping screws (ø2. 6 × 12 mm) Hexagon socket head cap screw (M4 × 8 mm) Hexagon Wrench (Small) External View Number of Items 4 1 1 1 1 1 1 2 ø6 286 mm 272 mm Dressing cover Since there are large variety of settings and connections possible according to applications, read the instruction manual well to select the proper setting and connection. 1. Remove the ignition key and disconnect the negative · terminal of the battery to prevent short circuits. 2. Set the unit according to the intended usage. 4. Connect the input and output wires of the units. (≥4Ω) WARNING To prevent fire caused by a short in the wiring, connect a fusible link or breaker nearby the battery’s positive terminal. Battery Ground wire* Dual voice coil subwoofer (4Ω + 4Ω) (2Ω + 2Ω) SPEAKER OUTPUT SPEAKER OUTPUT About the Lead Terminals 1. Wire Thicknesses You can use wires with the following thicknesses: Battery wire and ground wire AWG 4 – AWG 6 Speaker wire AWG 8 – AWG 12 Make a cut in the wire sheath (insulator made from vinyl, etc. ) at the position 10-13 mm away from the end of the wire, and then remove the unnecessary portion of the sheath by twisting it. Loosen the screw using the supplied hexagon wrench. Insert the conductor of the wire in the terminal hole, and then tighten the screw. 10 - 13 mm (3/8" - 1/2") Hexagon Wrench (Large) Hexagon Wrench (Small) 2. Strip the wire 3. Install the wire  English KAC-HQR8400_M_1English. indd 4 08. 10. 21 3:57:13 PM ■ Remote cable connection Remote cable (6. 0 m : 19. 7 ft) CAUTION • Before connecting the remote controller cables, always turn the Bass boost level knob all the way to the left. BATT. GND REMOTE L R FUSE [30Ax3] P. CON SPEAKER OUTPUT LINE IN LINE OUT Remote controller Remote cable ■ Multi Amplifier with Remote cable connection You can control the Bass boost level of the second and subsequent Slave amplifiers simultaneously from the Master amplifier. The volume level of each amplifier is determined by the setting of the Master amplifier (INPUT SENSITIVITY, boost level of the remote controller). CENTER UNIT (CD receiver, etc. ) Power control wire* Master amplifier Remote controller RCA cable* LINE OUT FILTER ON 1 2 3 4 0. 5 0. 3 5 0. 2 [MAX] [MIN] INPUT SENSITIVITY[V] OFF Setting the Master amplifier 1. Adjust the INPUT SENSIVITY to the output of the center unit to be connected. 1. Turn the LINE OUT FILTER switch OFF. • To adjust the Slave amplifier to the same volume as the Master amplifier, adjust the INPUT SENSIVITY to 0. 2 V (max. ). CAUTION BATT. GND REMOTE L R FUSE [30Ax3] P. CON SPEAKER OUTPUT LINE IN LINE OUT Setting the Slave amplifier RCA cable* Extension wire* LINE OUT FILTER ON 1 2 3 4 0. 5 0. 3 5 0. 2 [MAX] [MIN] INPUT SENSITIVITY[V] OFF • Before connecting the remote controller cables, always turn the Bass boost level knob all the way to the left. * Commercially available parts Slave amplifier BATT. GND REMOTE L R FUSE [30Ax3] P. CON SPEAKER OUTPUT LINE IN LINE OUT LINE OUT FILTER ON 1 2 3 4 0. 5 0. 3 5 0. 2 [MAX] [MIN] INPUT SENSITIVITY[V] OFF Slave amplifier Hexagon Wrench (Small) FUSE [30Ax3] BATT. GND REMOTE L R P. CON SPEAKER OUTPUT LINE IN LINE OUT Use the attached Hexagon Wrench. English  KAC-HQR8400_M_1English. indd 5 08. 10. 21 3:57:15 PM Controls 150 100 70 50 200 20 25 30 35 2 3 4 1 0. 5 0. 3 0. 2 [MAX] 15 40 [MIN] 5 LPF ISF FREQUENCY[Hz] FREQUENCY[Hz] INPUT SENSITIVITY[V] LINE OUT FILTER ON OFF NOTE The control panel locates under the front side cover. Remove the cover to access to its controls for adjustment. (See page 3) Remote controller THERMAL MANAGEMENT PROTECTION BATT. GND REMOTE L R FUSE [30Ax3] P. CON SPEAKER OUTPUT LINE IN LINE OUT 1 Fuse (30 A × 3) NOTE @ LPF(Low-Pass Filter) FREQUENCY control # ISF (infrasonic filter) control This control adjusts the frequency band output from this unit. [. . . ] Use the Remote cable of the accessory. For the pre-output level, refer to the <Specifications> in the instruction manual of the center unit. % LINE OUT FILTER switch ON position: Changing over the audio signal output to the LINE OUT terminal. The audio signal adjusted when setting LPF, INPUT SENSIVITY control and Bass boost (optional accessory) is output to the LINE OUT terminal. 7 LINE IN terminal 8 LINE OUT terminal The audio signal set with the LINE OUT FILTER switch will be output. Sets the level by which the low frequency range should be boosted. OFF position: 9 BOOST LEVEL (Bass boost level) control The audio signal input from the LINE IN terminal is output to the LINE OUT terminal (through output). CAUTION 0 Power indicator - FREQUENCY (Bass boost frequency) control = THERMAL MANAGEMENT indicator ~ PROTECTION indicator ! Power indicator Sets the center frequency around which the low frequency range should be boosted. Lights this indicator when the internal temperature is high. [. . . ]