TROUBLESHOOTING

Unable to “talk” to processor from Signal Manager software (OFFLINE status indicated)-

•Check that the serial cable is a normal serial data cable. Null-modem type cables will not work.

•Make sure that the serial cable is properly connected on both ends and that the retaining screws are snug (finger tight).

•Verify AC power to the 215PCM is ON and the POWER LEDs on the Processors are illuminated.

•Check that the COM Port (COM1, COM2, etc...) you are using on your PC and the software’s Options/DSP menu COM Port setting are the same. See example of Options/DSP settings, below.

COM Port setting (COM1 - COM4) must be the same as the COM port number your are using to connect the serial cable from the 215PCM’s proces- sors

I’m using both my COM Ports and two serial cables to connect to the 215PCM. Every time I try to switch COM Port setting in the Options/DSP menu, Signal Manger confuses my Presets-

•If you want to connect to both Processors on the 215PCM using RS-232 and two COM Ports from your PC, the following procedure must be followed:

1- Configure the DSP currently active in Signal Manager (could be the one on COM1 or COM2, etc...).

2- Apply you configuration and save it.

3- Select Tools/Options from the menu and click the DSP tab. Select the COM Port you want to use next. 4- Close the Signal Manger program.

5- Start the Signal Manager program; it will build a new configuration database.

6- Continue as usual.

-Remember, all you need to do is switch the COM Port setting and then restart Signal Manager.

•Consider upgrading to QSC’s amplifier network products. With QSControl, the Processor’s DSP is set up using the DataPort connections. No RS-232 connections are required and amplifier operating status can be monitored and logged.

The audio time alignment isn’t right-

•Each Processor adds 1.00 milliseconds of delay. This is “throughput” delay and can not be changed.

•Check your configurations for Limiter and Compressor objects that have Predictive Delay enabled. Predictive delay can add significant delay and must be accounted for in order to achieve proper system time-alignment. See software Help system for detailed information regarding Predictive Delay.

•Check your configurations for any Delay objects that may have been set to undesired delay values.

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QSC Audio ISIS 215PCM user manual Audio time alignment isn’t right
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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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