Why is there no sound coming from my JBL PRX715?
First, ensure the JBL Speaker System is properly connected to an active power source and that the circuit is on. Check that the illuminated logo is on. Try re-seating the power cable at both ends, and if possible, substitute with a power cable that you know is working. Also check if the speaker power cable is faulty or improperly connected.
What to do if my JBL PRX715 has no sound but the speaker comes on?
If your JBL Speaker System has power but no sound, check the VU meters on the source mixer. Ensure your CD/MP3 player is active. Use headphones to confirm the instrument is sending an audio signal. Disconnect and reconnect the signal cables, or try replacing the cable with one that is known to be working.
General| Bass reflex | Yes |
|---|---|
| Product color | Black |
| Recommended usage | - |
| Magnet type | Neodymium |
| Speaker type | 2-way |
| Tweeter diameter | 37.5 mm |
| Number of drivers | 2 |
| Speaker enclosure | Closed |
| Speaker placement | Floor, Tabletop/bookshelf |
| Audio output channels | 1.0 channels |
| Number of tweeter drivers | 1 |
| Woofer diameter (imperial) | 15 \ |
| Tweeter diameter (imperial) | 1.5 \ |
| Amplifier class | D |
| Amplifier output power | 1500 W |
| Impedance | - Ω |
| Frequency range | 42.9 - 19500 Hz |
| RMS rated power | - W |
| Crossover frequency | 1700 Hz |
| Amplifier input impedance | 20000 Ω |
| Number of amplifier channels | 2 channels |
| Connectivity technology | Wired |
| AC input voltage | 100 - 240 V |
| Power source type | AC |
| AC input frequency | 50 - 60 Hz |
Weight and Dimensions| Depth | 358.71 mm |
|---|---|
| Width | 445.13 mm |
| Height | 714.43 mm |
| Weight | 21600 g |
Important safety information and procedures for suspending JBL loudspeakers.
Requirements for professional engineer approval for structural attachments.
Guidelines for regular inspection and maintenance of suspension systems.
Explanation of the caution symbol indicating risk of electric shock.
Explanation of the warning symbol indicating risk of fire or electric shock from moisture.
Important caution regarding electrical safety practices and grounding.
Procedure for powering on and off the PRX700 speaker systems.
Adjustable EQ settings (Normal/Boost or Main/Monitor) for different sound profiles.
Knobs for setting the input level for CH1 and CH2.
Switch to select audio input (CH1, CH2, or MIX) for the speaker.
Switch to select audio output (CH1, CH2, or MIX) for the THRU connector.
Button to select 0° (Normal) or 180° (Inverse Polarity) for optimal bass response.
Selects FULL RANGE or HI PASS filter for the THRU connector output.
Gain knob for setting the input level of the subwoofer.
Procedure for obtaining warranty service and product repair.
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