User manual JBL PX300.4

[. . . ] Disconnect the (­) negative lead from your vehicle's battery. · Check clearances on both sides of a planned mounting surface before drilling any holes or installing any screws. Remember that the screws can extend behind the surface. · At the installation sites, locate and make a note of all fuel lines, hydraulic brake lines, vacuum lines, and electrical wiring. [. . . ] NOTE: If the nominal impedance of your speaker system is close to 2 ohms, be prepared to try both bridged and parallel configurations to determine which performs better. Set OUTPUT MODE to 2CH/BR (on input panel) CH 1 2 CHANNEL BRIDGED CH 2 NEON BPx Amplifier PARALLEL 2CH/BR PARALLEL* OUTPUT MODE (partial rear panel) SPEAKER OUTPUTS *SEE MANUAL FOR PARALLEL CONNECTION See "Setting the Crossover(s)" on page 6 to adjust X-OVER controls (on input panel) X-OVER FREQ Figure 1. The JBL Power Series subwoofer amplifier is set to 2-channel mode to drive a pair of subwoofers. 32Hz 320Hz 12dB 24dB SLOPE Subwoofer Subwoofer Set OUTPUT MODE to 2CH/BR (on input panel) CH 1 2 CHANNEL BRIDGED CH 2 NEON BPx Amplifier PARALLEL 2CH/BR PARALLEL* OUTPUT MODE (partial rear panel) SPEAKER OUTPUTS *SEE MANUAL FOR PARALLEL CONNECTION See "Setting the Crossover(s)" on page 6 to adjust X-OVER controls (on input panel) Figure 2. The JBL Power Series subwoofer amplifier is set to bridged (mono) mode to drive a single subwoofer. Use this mode only when the nominal impedance of the speaker system is 2 ohms or greater. X-OVER FREQ 32Hz 320Hz 12dB 24dB SLOPE Subwoofer (2 ohms or greater) Set OUTPUT MODE to PARALLEL (on input panel) CH 1 2 CHANNEL BRIDGED CH 2 NEON BPx Amplifier PARALLEL 2CH/BR PARALLEL* jumper SPEAKER OUTPUTS OUTPUT MODE (partial rear panel) *SEE MANUAL FOR PARALLEL CONNECTION See "Setting the Crossover(s)" on page 6 to adjust X-OVER controls (on input panel) Figure 3. The JBL Power Series subwoofer amplifier is set to parallel mode to drive a single subwoofer. Use this mode only when the nominal impedance of the speaker system is less than 2 ohms. NOTE: A jumper is added between the + terminals. X-OVER FREQ 32Hz 320Hz 12dB 24dB SLOPE Subwoofer (less than 2 ohms) 3 APPLICATIONS ­ Px600. 2 The JBL Px600. 2 amplifier can be set up for stereo or bridged-mono operation, as shown in Figures 4 and 5. NOTE: For simplicity, Figures 4 and 5 do not show power, remote and input connections. Set MODE to FLAT; INPUT MODE to ST (on input panel) X-OVER FREQ Figure 4. The JBL Px600. 2 amplifier is set to stereo mode to drive a pair of full-range speakers. GND REM BATT BRIDGED NEON STEREO R L NEON Px600. 2 POWER FUSES SPEAKER OUTPUTS Px600. 2 (rear panel) 32Hz 320Hz FLAT HP LP MODE 12dB 24dB SLOPE ST INPUT MODE MO R Speaker L Speaker FREQ and SLOPE have no effect Figure 5. The JBL Px600. 2 amplifier is set to bridged (mono) mode to drive a single subwoofer. Use this mode only when the nominal impedance of the subwoofer is 4 ohms or greater. Set MODE to LP; INPUT MODE to MO (on input panel) X-OVER FREQ GND REM BATT BRIDGED STEREO R L NEON NEON Px600. 2 POWER FUSES SPEAKER OUTPUTS Px600. 2 (rear panel) 32Hz 320Hz FLAT HP LP MODE 12dB 24dB SLOPE ST INPUT MODE MO Subwoofer (4 ohms or greater) See "Setting the Crossover(s)" on page 6 to set FREQ and SLOPE For Stereo or Mono signals, use both L/R inputs 4 APPLICATIONS ­ Px300. 4 The JBL Px300. 4 amplifier can be set up for stereo or tri-mode operation, as shown in Figures 6 and 7. NOTE: For simplicity, Figures 6 and 7 do not show power, remote and input connections. The JBL Px300. 4 amplifier is set to stereo mode to drive front and rear pairs of full-range speakers. NOTE: To limit bass sent to full-range speakers, set X-OVER MODE to HP. See page 6 to set FREQ and SLOPE. Set REAR and FRONT INPUT MODE to ST (on input panel) FRONT GND REM BATT R L BRIDGED STEREO REAR NEON NEON R L Px300. 4 POWER FUSES SPEAKER OUTPUTS SPEAKER OUTPUTS Px300. 4 (rear panel) RF Speaker + LR Speaker + - Set REAR and FRONT X-OVER MODE to FLAT (on input panel) - LF Speaker ST MO INPUT MODE FLAT HP LP MODE RR Speaker + - + - Figure 7. The JBL Px300. 4 amplifier is set to drive a stereo component system and a subwoofer with a nominal impedance of 4 ohms or greater. NOTE: To drive a pair of rear midbass speakers (instead of subwoofer), set INPUT MODE to ST, X-OVER MODE to LP, and use DBO to set HP filter. Set FRONT INPUT MODE to ST (on input panel) FRONT GND REM BATT R L BRIDGED STEREO REAR NEON NEON R L Px300. 4 POWER FUSES SPEAKER OUTPUTS SPEAKER OUTPUTS Px300. 4 (rear panel) Set REAR INPUT MODE to MO (on input panel) RF System + - Subwoofer ST MO INPUT MODE ST MO INPUT MODE + - Set FRONT X-OVER MODE to HP (on input panel) Set REAR X-OVER MODE to LP (on input panel) FLAT HP LP MODE FLAT HP LP MODE See "Setting the Crossover(s)" on page 6 to set FREQ and SLOPE - LF System + 5 INSTALLATION AND SETUP SETTING THE OUTPUT MODE Setting an output mode depends on your choice of system configuration and the nominal impedace of your speaker system. JBL Power Series BPx amplifiers provide rated power into any impedance between 1 and 4 ohms. The BPx500. 1, BPx1100. 1 and BPx2200. 1 amplifiers can be configured to provide high voltage to loads of 2 ohms or greater, or high current for loads below 2 ohms. Using the Bridge Mode If your speaker system has a nominal impedance of 2 ohms or greater, bridge the amplifier's two channels to drive the speaker(s). On BPx models, set the OUTPUT MODE switch to 2CH/BR (see Figure 2 on page 3). Using the Parallel Mode (BPx Models Only) If the nominal speaker-system impedance is less than 2 ohms, connect the two amplifier channels in parallel to drive the speaker(s), as shown in Figure 3 on page 3. [. . . ] Finish the installation of the neon tubes as instructed in their owner's manual. TROUBLESHOOTING SYMPTOM No audio (POWER LED is off) No audio (PROTECT LED flashes every 4 sec. ) No audio (PROTECT LED is on) LIKELY CAUSE No voltage at BATT+ or REM terminals, or bad or no ground connection DC voltage on amplifier output SOLUTION Check voltages at amplifier terminals with VOM Amplifier may need service; see enclosed warranty card for service information Make sure amplifier cooling is not blocked at mounting location; verify speaker-system impedance is within specified limits (see "Specifications" on the next page) Check vehicle charging system for defective voltage regulator Check INPUT LEVEL setting; see previous page Check vehicle charging system for defective voltage Check INPUT LEVEL setting; or check speaker wires for shorts or grounds Remove speaker leads one at a time to locate shorted speaker or wire, then repair Check speaker connections for proper polarity Amplifier is overheated No audio (PROTECT and POWER LEDs flash) I-E/OPT LED is on all times (not flashing) No audio (PROTECT LED is on) Distorted audio Voltage less than 9V on BATT+ connection Amplifier is being overdriven Voltage more than 16V or less than 8. 5V on BATT+ connection regulator Input sensitivity is not set properly, or amplifier or source unit is defective Short circuit in speaker or wire Lip NEON Neon Tube Neon Tube and Clip To Neon Power Supply BRIDGED Clip FUSES Installing A Clip On Extrusion Lip (side view) Clip Clip STEREO Distorted audio and PROTECT LED flashes Music lacks "punch" L SPEAKER OUTPUTS R PROTECT POWER I-E OPT GND NEON Px600. 2 Amplifier (top view with clear cover off) Output/Power End Panel Figure 9. Installing neon tubes in a JBL Px600. 2 amplifier. Installation is similar for other models. Px600. 2 POWER Installed Neon Tube Under Extrusion Lip To Neon Power Supply Speakers are not connected properly REM BATT 7 SPECIFICATIONS Px300. 4 · 123. 5W RMS x 4 channels at 4 ohms and <1% THD + N · Signal-to-noise ratio: 76. 64dBA (reference 1W into 4 ohms) · 358W RMS x 2 channels at 4 ohms, 14. 4V supply and <1% THD + N · 169W RMS x 4 channels at 2 ohms, 14. 4V supply and <1% THD + N · Dynamic power: 385W at 4 ohms x 2 channels · Effective damping factor: 6. 383 at 4 ohms · Frequency response: 16. 6Hz ­ 500kHz (­3dB) · Maximum input signal: 5. 9V · Maximum sensitivity: 250mV · Output regulation: . 39dB at 4 ohms · Dimensions (L x W x H): 12-1/4" x 17" x 2-9/16" BPx1 100. 1 · 334W RMS x 2 channels at 4 ohms and <1% THD + N · Signal-to-noise ratio: 63dBA (reference 1W into 4 ohms) · 1141W RMS x 1 channel at 4 ohms, 14. 4V supply and <1% THD + N · 1022W RMS x 1 channel at 1 ohm, 14. 4V supply and <1% THD + N · Dynamic power: 1312W at 4 ohms x 1 channel · Effective damping factor: 6. 179 at 4 ohms · Frequency response: 21Hz ­ 320Hz (­3dB) · Maximum input signal: 7V · Maximum sensitivity: 264mV · Output regulation: . 25dB at 4 ohms · Dimensions (L x W x H): 12-1/4" x 17" x 2-9/16" Features, specifications and appearance are subject to change without notice. [. . . ]