Troubleshooting (Continued)

The receiver causes a malfunction when it is connected to the PC with an RS-232C cable

Cause:

When the receiver is connected to your PC with an RS-232C cable, the power of the receiver may be automatically switched on when you operate the PC.

Unplug the cable when not in use.

EQ response in the graph (following calibration) does not appear flat

Cause 1:

The slope of the graph indicates the reverb characteristics. The reverb characteristics of the room itself cannot be corrected by equalization alone, so the angle of the graphs’ slope is the same before and after calibration.

Through calibration, the graphs for the different frequencies move horizontally by the amount of the equalization. For the results of calibration, you can check that the graphs line up at a specific point on the time axis.

The reverb characteristics themselves (the shape of the graph) do not change unless the listening environment is improved.

(See pages 18 to 20.)

Cause 2:

For various reasons, the frequency characteristic graphs may not become flat even when equalization is performed with the “SYMMETRY” or “ALL CH ADJ” functions.

With MCACC, calibration is performed automatically to achieve the optimum sound quality, but without any unreasonable calibration.

Adjustments made with the “Manual MCACC” setup do not change the graph

Cause:

Despite level adjustments being made, the filters used for analysis may not display these adjustments in the graphical output.

However, these adjustments are taken this into account by the filters dedicated to overall system calibration.

Lower frequencies do not seem to have been calibrated for SMALL speakers

Cause:

Low frequency calibration with the equalizer is not performed for speakers that are set to “SMALL”, but the reverb characteristics display shows the pure characteristics of the sound output from the speakers, so it indicates the characteristics with no low frequency calibration.

With MCACC, optimum calibration is performed in function of the speakers’ sound reproduction capacities, so there is no problem for low frequency calibration of speakers that are set to “SMALL”.

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Pioneer VSX-9040TXH, VSX-21TXH, VSX-23TXH, VSX-9140TXH manual Unplug the cable when not in use
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VSX-9140TXH, VSX-9040TXH, VSX-23TXH, VSX-21TXH specifications

Pioneer has long been a frontrunner in the audio visual receiver market, and its VSX series is a testament to the brand's commitment to delivering high-quality home theater experiences. The VSX-21TXH, VSX-9040TXH, VSX-23TXH, and VSX-9140TXH are standout models that offer an impressive array of features, technologies, and characteristics.

Starting with the VSX-21TXH, this receiver showcases Pioneer’s ability to produce powerful, immersive sound. It provides a robust 7.1-channel surround sound configuration, which allows for full-bodied audio staging, making it perfect for both movies and music. The device is equipped with Dolby TrueHD and DTS-HD Master Audio technologies, ensuring high-definition sound quality. One of its notable features is the Integrated HDMI circuitry, which allows support for multiple HD sources while maintaining an elegant and clean setup.

Moving on to the VSX-9040TXH, this model elevates the audio experience with its advanced Class D3 amplification technology. This innovative design delivers high efficiency while minimizing power consumption. The VSX-9040TXH supports both wired and wireless surround sound setups, featuring built-in Wi-Fi and Bluetooth connectivity. This model is particularly user-friendly, boasting an intuitive GUI that enables easy navigation and setup.

The VSX-23TXH adds further functionality with its inclusion of multi-zone audio capabilities, allowing users to enjoy different audio sources in separate rooms simultaneously. This model also features advanced sound optimization technology, such as MCACC (Multi-Channel Acoustic Calibration System), which automatically calibrates audio settings based on the room’s acoustics to deliver the best sound quality.

Lastly, the VSX-9140TXH represents the pinnacle of the VSX series with its 9.2 channel surround sound. This receiver is designed for true audiophiles, delivering exceptional sound clarity and richness in all audio formats. It offers support for the latest surround formats, including Dolby Atmos and DTS:X, which enable immersive three-dimensional sound experiences. Additionally, the receiver features a high-resolution audio playback feature, supporting formats such as FLAC and DSD for those who crave studio-quality sound.

In summary, the Pioneer VSX-21TXH, VSX-9040TXH, VSX-23TXH, and VSX-9140TXH are remarkable audio video receivers, each capitalizing on cutting-edge technology and innovative features. They cater to various audio needs, making them ideal choices for anyone looking to enhance their home cinema or music environments. These models not only promise superior sound and user experience but also stand as a reflection of Pioneer’s dedication to audio excellence.
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