TROUBLESHOOTING

The 215PCM won’t turn on when the Power switch is operated-

•Verify AC power source is providing required voltage.

•Check each end of the power cord. The twist-lock connectors need to be fully inserted and twist-locked into place.

•If using the DataPort inputs and QSC amplifier network control applications, the amplifier could be in STANDBY mode. Check with the system operator to place the amplifiers in POWER ON mode. If required, you can check this by temporarily disconnecting the DataPort cables to each Processor; if the 215PCM powers up, then the amplifier network control was forcing the amps to be in STANDBY mode.

•Inspect the AC power cord for damage. Unplug from the AC power source and then carefully inspect the cord for damage. Replace if any damage is detected.

The 215PCM “cuts-out” when I really crank it up (intermittent operation)-

•Make sure the AC power source is rated for 120V, 30 Amps. Do not use 20 or 15 Amp AC supply circuits for the 215PCM! Use only 12 or 10 gauge heavy-duty extension cords.

•If the AC power source is “sagging” (or drooping) under heavy load, the circuit is overloaded or has other fundamen- tal problems. Use another circuit or have the circuit checked by a licensed, professional electrician.

•Do not use multiple 215PCM’s from the same AC power circuit branch. Momentary, peak current from the AC line can easily exceed 50 Amps per 215PCM. While this is well within the limits of 30 Amp (continuous) circuits, additional 215PCM’s could overload one circuit branch. Always consult a licenced, professional electrician for verification of proper AC power distribution in high-power systems.

Can I use some sort of adapter on the power cord so that I can use “regular” outlets?-

•QSC Audio Products strongly discourages ANY changes in the AC power connections. Use only NEMA L5-30, 120V, 30 Ampere twist-lock connectors. All supply circuits and AC power receptacles should be rated for 120 V., 30 Amp service.

•Unreliable and potentially dangerous conditions could result from using this product with improperly rated AC supply circuits. Always consult a licensed, professional electrician for verification of proper AC power distribution in high-power systems.

•In emergencies, 15A adaptors can be used if full operating levels are avoided.

How can I adjust the gain settings on the amplifiers? Any recommended tool for the job?-

•See page 10 for details.

•Two recommended tools: Excelite #R186 (metal, 6” blade screwdriver) or GC Electronics #8988 (fiberglass, 12” blade adjustment tool).

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QSC Audio ISIS 215SB user manual Troubleshooting, 215PCM won’t turn on when the Power switch is operated
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ISIS 215SB specifications

The QSC Audio ISIS 215SB is a powerful subwoofer designed to meet the needs of live performances, installations, and various audio applications. Engineered with excellence, the ISIS 215SB offers an impactful bass response, making it a reliable choice for professionals in the music and entertainment industry.

At the heart of the ISIS 215SB is its dual 15-inch low-frequency drivers. These drivers are specifically designed to produce deep, resonant bass tones with high efficiency. The subwoofer features a remarkable power handling capacity, allowing it to deliver robust sound levels without distortion. With an impressive peak power rating, the ISIS 215SB can easily handle complex musical passages while maintaining clarity and punch.

One of the standout technologies of the ISIS 215SB is its advanced cabinet design. Constructed from high-density plywood, the enclosure is built for durability and strength. This design minimizes unwanted resonance, ensuring that the audio output remains clean and powerful. The cabinet also features a durable finish that can withstand the rigors of touring and live events, making it an excellent investment for audio professionals.

The ISIS 215SB is also equipped with a sophisticated integrated amplifier that ensures consistent performance across a wide range of frequencies. This amplifier is engineered to work seamlessly with the drivers, providing optimal power distribution and protection from overheating. The result is a subwoofer that can perform reliably in demanding conditions, whether it’s in a concert hall, nightclub, or outdoor event.

Connectivity is another significant aspect of the ISIS 215SB. It includes multiple input options, allowing for easy integration into various audio systems. The subwoofer features speakON connectors, which provide secure and stable connections, reducing the risk of signal loss during performance. This versatility enables the ISIS 215SB to be a formidable component of any sound system.

The design of the ISIS 215SB also prioritizes portability. Weighing comparatively less than many other subwoofers in its class, it comes with built-in handles for easier transportation. This feature is especially beneficial for touring professionals who require mobility without sacrificing sound quality.

In conclusion, the QSC Audio ISIS 215SB subwoofer is a leading choice for those seeking a blend of power, durability, and versatility. Its dual 15-inch drivers, advanced cabinet construction, integrated amplifier, and connectivity options make it an excellent solution for various audio applications, delivering the high-quality low-frequency performance expected from a top-tier audio product.
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