QSC Audio ISIS 215SB user manual Preparation for First USE- Amplifier Gain Controls

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PREPARATION FOR FIRST USE- Amplifier Gain Controls

Adjusting the Gain Settings of the Amplifiers

Ordinarily, the Gain controls of the amplifiers are left set at full gain. This is not recommended for first-time users of freely- configurable DSP. Freely configurable DSP, while being the most flexible and desirable, will do precisely what the user configures it to do. This may not be the expected, desired result and could damage your speakers or hearing. For this reason, QSC recom- mends the initial “learning” sessions with the 215PCM be carried out with the amplifier Gain controls set at their minimum useful settings.

Each of the two cooling air exhaust vents (one on each end of the cabinet) has two small, rectangular openings for adjusting the Gain controls. The exhaust vent closest the wheels has the access holes for the Subwoofer amplifier. The exhaust vent closest the handles has the access holes for the Top Box Amplifier.

Below, the illustration shows the location of the Subwoofer amplifier’s gain adjustment access holes. The Top Box amplifier’s access holes are on the vent located on the other end of the cabinet (left, as viewed). The access holes are not labeled. This is to discourage gain tampering after the 215PCM is set up. Use a 6- inch #1 flat blade screwdriver or similar tool. Fiberglass-shaft TV adjustment tools work well, are nonconductive, and won’t scratch equipment easily. Use a flashlight to aid in locating the gain control.

Gain control adjustment access holes (Sub- woofer amplifier shown). The lower hole accesses CH1’s gain control. CH2’s gain control has no effect because the Subwoofer amplifier is configured in bridge mono mode at the factory. Access is available for CH2’s gain control for users that modify the 215PCM. Note that modifications may void warranty.

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Contents Isis 215SB Important Safety Precautions Explanation of Symbols Table of Contents Introduction 215PCM Powered Control Module HighlightsINTRODUCTION- General Overview Composilite215PCM Front INTRODUCTION- Technical Overview Technical OverviewINTRODUCTION- Block Diagram For 215SB Subwoofer Only Users Unpacking and InspectionQSC shipping box should contain For 215PCM Powered Core Module Users Adjusting the Gain Settings of the Amplifiers Preparation for First USE- Amplifier Gain ControlsAC Power Switch CONNECTIONS- AC PowerUse only heavy-duty 12 or 10 ga. extension cords RS-232 Connection 215PCM only CONNECTIONS- RS-232 Processor Configuration ConnectionTo Configure a Processor 215PCM only Important pointsCONNECTIONS- Mode Switch and Signal Routing Mode Switch 215PCM onlyAudio Connections CONNECTIONS- Audio Connections XLR InputsXLR Inputs CONNECTIONS- XLR Connection Recommendations and Pinouts XLR ConnectionsCONNECTIONS- Post Processor Outputs Terminal Block Connector PinoutsPost Processor Outputs CONNECTIONS- DataPort QSControl users only What is a DataPort?DataPort Connections CONNECTIONS- Output to Top Boxes Speakons Output to Top BoxesUSE- Cooling Air Inlet and Exhaust Vents Cooling Air Inlet and Exhaust VentsUSE- AC Power Switch and LED Indicators LED IndicatorsUSE- LED Indicators and Important User Caution Important User CautionSoftware Installation System RequirementsGeneral Use Guidelines for Freely-Configurable DSP Processor USE General Guidelines and Preset DescriptionFactory Presets Configuring the Processors PresetsHow to Save Configurations into a Processor’s Preset Processor Use Configuring the Processors Discrete Discrete 2.1 Checklist Processor Use Configuring the Processors 3-way Mono Stack Combo Mode preferred Discrete Mode optionalTroubleshooting 215PCM won’t turn on when the Power switch is operatedAudio time alignment isn’t right Troubleshooting Specifications- Isis 215SB Specifications- Isis 215SB Acoustic Performance Connector 215SB Specifications Frequency RangePower Handling4 Wiring of ConnectorSpecifications- Isis 215PCM 215PCM System Specification DescriptionSpecifications- Isis 215PCM Amplifiers Amplifier SpecificationsSpecifications- Isis 215PCM Processors Digital Signal Processor SpecificationsContact Closure Feature APPENDIX- Contact Closure Wiring DetailsWiring Diagram for Contact Closure APPENDIX- RS-232 Pinout and Pin #9 Usage Note RS-232 PinoutProduct Warranty Disclaimer

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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