How to Interpret the Graphs

As indicated in Things you can accomplish with this application (page 3), the reverb characteristics graph can be used as reference when determining the calibration time position with the receiver’s “Advanced EQ Setup” function. It is also a valuable means for checking the effect of measures taken to improve the acoustics of the room.

The group delay characteristics graph can be used to check the group delay characteristics (before calibration) of the speakers being used and the effect of calibration with the Full Band Phase Control function. For details, refer to Reading the group delay characteristics graph (Group Delay) on page 25.

How to interpret reverb graphs (Reverb)

The graphs show changes in microphone input level along a time axis, beginning from a state of quiet at time 0, when test tones begin to be output, and continuing while a constant level of sound is output from the speakers.

•If there is absolutely no reverberation in your room, the graph will look like figure A below.

•If there is reverberation, the graph will show a gradual accumulation of acoustic power, as shown in figure B.

Note

•Due to an effect known as “group delay”, lower frequencies may take longer to be generated than higher frequencies (this is most obvious when comparing the frequencies around 0 ms).

•If a graph extends beyond the display range, or almost fills it, you can change the display by using the Z (Zoom) control on the graph adjustment bar, adjusting the display range of the Level [dB] scale so that the whole graph is visible.

•Since channel level and speaker distance settings are displayed in the graphical output, it is best to make sure these settings (made in the Auto MCACC “ALL” or “Channel Level” setup) are adjusted properly before reverb measurement.

•Even in cases where there is a great difference in the output levels of different frequencies (the frequency characteristics of the room are poor), the frequency characteristics of individual channels can be set closer to flat using the “SYMMETRY” or “ALL CH ADJUST” calibration settings in the receiver’s “Auto MCACC” function. (For details, see page 44 in the receiver’s Operating Instructions.)

•It is usually not possible to calculate the equalization values employed by the receiver’s Advanced EQ Setup function simply by viewing the graphs displayed on your PC. (This is because the automatic adjustments made by Advanced EQ Setup function take account of factors such as equalization band interference and analytical filter characteristics, to achieve the optimum characteristic profile.)

•There may be differences on the reverb characteristics graphs after measurements with the Full Auto

MCACC function as compared to after measurements with the Reverb Measurement function (Manual MCACC  “EQ Professional”) due to the standing wave control setting. With Full Auto MCACC, the reverberations are measured with standing wave controlled, so the reverb characteristics graph does not reflect the influence of the standing waves. By contrast, with Reverb Measurement, the reverberations are measured without standing wave control, so you can check the reverb characteristics including the influence of the standing waves. If you want to check the acoustics of the room (with the standing waves), we recommend using Reverb Measurement.

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SC-07 specifications

The Pioneer SC-07 is a high-end AV receiver that exemplifies the brand's commitment to exceptional sound quality and advanced technology. Designed for audiophiles and home theater enthusiasts alike, the SC-07 integrates state-of-the-art features with a user-friendly interface, making it a centerpiece for any media setup.

One of the key characteristics of the SC-07 is its robust amplification system. With a power output of 130 watts per channel into 8 ohms, this receiver ensures clear and dynamic audio performance, whether you are listening to music or watching movies. It employs Class D3 amplification, which increases efficiency while maintaining high sound fidelity. This technology minimizes heat generation, allowing for a more compact design without sacrificing performance.

The SC-07 supports a variety of audio formats, including Dolby TrueHD and DTS-HD Master Audio, enabling it to deliver an immersive surround sound experience. It features a 9.2-channel configuration, meaning it can provide sound for up to nine speakers and two subwoofers, ensuring a full and engaging home theater experience. The advanced Audyssey MultEQ XT room calibration technology helps optimize sound performance based on your room's acoustics, allowing for a tailored listening experience.

Connectivity options on the SC-07 are abundant, with multiple HDMI inputs and outputs, enabling easy integration of various devices like Blu-ray players and gaming consoles. The receiver supports 4K video pass-through and scaling, ensuring that your visuals remain sharp and detailed. Additionally, it features internet connectivity for streaming services and firmware updates, as well as support for Wi-Fi and Bluetooth, increasing its versatility.

The user-friendly interface provides easy access to all functions, including a customizable GUI that allows users to organize their favorite settings and presets. The SC-07 also includes a dedicated app for smartphones, making it simple to control the receiver remotely.

In conclusion, the Pioneer SC-07 AV receiver stands out for its blend of innovative technologies, robust performance, and expansive connectivity options. Its commitment to delivering a premium audio-visual experience makes it a desirable choice for anyone looking to enhance their home theater setup. Whether you're an audiophile or a casual listener, the SC-07 promises to elevate your entertainment experience with its impressive capabilities.