TROUBLESHOOTING

My Inputs are hooked up to the 215PCM, and the Top Boxes sound great. But, the subwoofer doesn’t seem to be working-

•Check the MODE SWITCH position. In COMBINATION MODE, inputs for CH1 and CH2 are summed and routed to the Subwoofer Processor. If set to DISCRETE MODE, the Subwoofer Processor is disconnected from CH1 and CH2 inputs, and connected to INPUT 3. And if Input 3 has no input signal connected to it, then the Subwoofer will have no signal.

•If operating in DISCRETE MODE, make sure the Subwoofer input signal is connected to Input 3.

•Verify the Processor configuration loaded in the Subwoofer Processor is as desired.

I am using the 215PCM setup for biamp operation, but my mid- and high-frequency sound seems to be gone-

•Make sure the Mode Switch is in the correct position for your intended application.

•Be sure you are using only the upper Speakon for 4-wire biamp connection.

•If using 2-wire Speakon cables to connect to your biamp cabinet, use the upper Speakon for HF and the lower Speakon for MF.

•Verify the Processor configuration loaded in the Top Box Processor is as desired.

I’m trying to biamp two separate top boxes and it doesn’t seem to be working-

•There are only two channels of amplification available to the Top Boxes. You can not run two biamp devices, as this would require four channels of amplification. The 215PCM supports two channels of amplification for Top Boxes.

•QSC 8 ohm top boxes have dual-, feed-through Speakons that allow 1 or 2 additional top boxes to be daisy- chained.

I used my 215PCM with another PC that had a later version of Signal Manager running on it. Now my other PC (with the older Signal Manager version) won’t recognize my configurations-

•When a configuration is opened by a newer version of Signal Manager software than the one used to create it, the configuration is “updated” to be compatible with the newer version.

•You will have to keep the version of the Signal Manager software the same for all PC’s used to configure the 215PCM. This will ensure reliable, predictable results when using multiple PCs to configure the Processors.

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QSC Audio ISIS 215SB user manual Troubleshooting
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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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