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Hersteller: JBL Dateigröße: 298.77 kb Dateiname: fcd71777-484b-4b00-b6a8-fa625e210a24.pdf Unterrichtssprache:

The JBL Px600.2 amplifier is set to stereo mode to drive a pair of full-range speakers. 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. 4 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. 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. Figure 6. 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. 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. 6 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. On BPx models, set the OUTPUT MODE switch to PARALLEL. NOTE: If the nominal impedance of your subwoofer system is close to 2 ohms, try both series and parallel to determine which mode provides the highest volume. Use the I/E OPT LED according to “Setting Input Sensitivity” on the right. 6 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. On BPx models, set the OUTPUT MODE switch to PARALLEL. NOTE: If the nominal impedance of your subwoofer system is close to 2 ohms, try both series and parallel to determine which mode provides the highest volume. Use the I/E OPT LED according to “Setting Input Sensitivity” on the right. Using the 2-Channel Mode With any Power Series amplifier, you can also drive two woofers separately by connecting the speakers in the 2-channel mode (see Figure 1 on page 3). In this mode, the minimum nominal impedance is 2 ohms. On BPx models, set the OUTPUT MODE switch to 2CH/BR. SETTING THE CROSSOVER(S) IMPORTANT: If you plan to use the Px300.4 or Px600.2 to drive full-range speakers, set the X-OVER MODE switch(es) to FLAT and skip to the next section, “Setting Input Sensitivity.” 1. Initially set the X-OVER FREQ control(s) midway. Later, when listening to music (in the next section), adjust them for least- perceived distortion from midrange and high-frequency speakers, while allowing them to reproduce as much bass as possible. 2. Depending on your system plan, set the X-OVER MODE switch(es) to LP (low-pass), HP (high-pass), or FLAT. 3. For HP filters, set the X-OVER SLOPE switch(es) to 24dB to limit bass and provide increased system volume with less distortion. For LP filters, use 12dB or 24dB according to taste. However, using a 24dB slope will make bass less directional since midrange frequencies are being filtered from the woofer’s response. When choosing a low-pass filter frequency for your subwoofers, choose the highest frequency that will remove vocal information from the sound of the subwoofer. SETTING INPUT SENSITIVITY NOTE: For BPx models, you can use the supplied REMOTE LEVEL CONTROL instead of the amplifier’s INPUT LEVEL control to set input sensitivity. Connect t...

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