CONNECTIONS- Output to Top Boxes (Speakons™)

Output to Top Boxes

At the right side of the rear panel are the output connections to the top box speakers. Note the color coding scheme of the text labels for each Speakon connector. The color coding corresponds with the colors of the Mode Switch labels (Combination Mode or Discrete Mode).

The upper Speakon is labeled MONO BIAMP OR CH1 and DISCRETE CH1 in two text colors indicating that the function of the Speakon relies upon the position of the Mode Selector Switch (see chart, below). The upper Speakon has all four terminals wired and is thus suitable for biamp use. Both CH1 and CH2 outputs are wired to the top Speakon. Do not use the lower Speakon when using the upper Speakon for biamp use.

The lower Speakon is labeled CH2 and DISCRETE CH2 in two different text colors indicating the same functional reliance on the Mode Switch position. In either Mode, this Speakon is wired to the Top Box amplifier’s CH2 output. CH2’s output is also wired to the upper Speakon’s 2+ and 2- terminals for biamp applications. Do not use the lower speakon if using the upper Speakon in biamp connection.

Each Speakon has a wiring chart (pinout) printed next to it for easy reference. The pin numbers (1+, 1-, etc...) correspond to the pin numbers marked on the Speakon.

To connect a Speakon, insert the keyed plug into the receptacle and twist counterclockwise to lock in place.

When the Speakon locks into place, an audible “click” confirms connection.

Speakons provide a clean appearance, reliable electrical connection and positive locking mechanism. To remove a Speakon, pull the thumb-latch back and twist counterclockwise 1/8th turn.

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QSC Audio ISIS 215PCM user manual CONNECTIONS- Output to Top Boxes Speakons
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ISIS 215PCM specifications

The QSC Audio ISIS 215PCM is a powerful loudspeaker designed to meet the demands of professional audio applications. Known for its exceptional sound quality and robust construction, the ISIS 215PCM is engineered to deliver a superior listening experience in various settings, including live events, concerts, and installations.

One of the main features of the ISIS 215PCM is its dual 15-inch low-frequency drivers, which provide deep, resonant bass and a wide dynamic range. This design allows for high SPL (Sound Pressure Level), making it suitable for large venues. The enclosure is strategically designed to enhance performance by minimizing distortion, thus ensuring clear audio reproduction even at high volumes.

The ISIS 215PCM is equipped with a high-frequency compression driver coupled with a wide dispersion horn. This combination yields excellent high-frequency response and seamless integration with the low-frequency drivers. The dispersion pattern has been meticulously engineered, enabling consistent sound coverage throughout the audience area, which is essential in live sound applications.

In terms of technology, the ISIS 215PCM features advanced acoustic design principles that optimize both performance and durability. The enclosure is constructed from high-grade plywood and reinforced to withstand the rigors of touring and installation, while the dual ports facilitate enhanced airflow and reduced turbulence, resulting in accurate sound reproduction.

Additionally, the loudspeaker employs a sophisticated passive crossover network that effectively separates frequencies, allowing each driver to operate within its optimal range. This technology minimizes phase issues and ensures that the transitions between the low and high frequencies are smooth and natural.

Portability is another significant characteristic of the ISIS 215PCM. It includes robust handles for easy transport and installation, making it a great choice for sound engineers and technicians who need to set up and break down equipment regularly. The professional-grade connections further enhance convenience and reliability in diverse applications.

Ultimately, the QSC Audio ISIS 215PCM is a remarkable loudspeaker that combines innovative technologies, premium materials, and thoughtful design. It is ideal for audio professionals seeking a reliable solution that delivers exceptional sound quality and performance. With its versatility and robust features, the ISIS 215PCM stands out as a formidable choice for both live sound and permanent installations.
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