EQ Screen

Output Equalizers

Select 1-8 on the top of the EQ screen.

Filter:

Select any of the five independent filters to use.

Type:

Choices are: Parametric, Notch, Allpass1, Allpass2, Horn EQ, LPF-6, LPF-12, HPF-6, HPF-12, Low Shelf, High Shelf and Bandpass. Depending on the filter selected various options for adjustment are presented in the window.

Parametric: Frequency, BW (in oct), Level

Notch: Frequency, BW (in oct). Notch has a fixed attenuation on minus infinity and the BW is defined 3 dB from unity.

All Pass1: Frequency

All Pass2: Frequency and Bandwidth

Horn EQ: Turnover Frequency and Level

LPF6 and HPF6: Frequency

LPF12 and HPF12: Frequency and Q

Low and High Shelf: Frequency and Level

Bandpass: Center Frequency and Bandwidth

Dynamics

DYNAMICS:

Inputs A B C & D or outputs 1-8 should be selected on the top of the screen. While on the top of the screen push the data wheel and an arrow appears. Rotate the wheel to select which input or output you wish to adjust and press the data wheel. Dynamics in the input channels may be linked in pairs for stereo tracking on the Input pages on the Setup/Configuration screen. Most users should use the dynamics on the outputs as Limiters to protect speakers and amplifiers and as compressors on the inputs should this type of tonal modification be necessary.

Threshold:

The threshold is adjustable in .5 dB steps from –76 dBu to

+24 dBu. This control determines the minimum level when the compressor begins to limit the dynamic range. The compressor has no affect on the signal as long as the signal strength is below the threshold point. Once it passes the threshold point, the compressor begins to limit the dynamic range of the output according to the value set by the Ratio control.

Ratio:

The ratio determines how strong the limiting becomes once the threshold is crossed. Values of 1:1 (no compression) to 20:1 are possible. Ratios of 10:1 and above should be selected for speaker protection.

Attack:

The attack function sets the amount of time for the compressor to respond once the threshold has been crossed. Specifying this value allows the user to determine whether the compressor responds as a peak or RMS unit as very short attack times consider only peaks while times above 50 ms average these peaks and result in RMS response. We recommend attack times of between 50 ms - 100 ms be used when setting the limiters to protect the speakers from being overdriven by the power amps. It is the average power long term that causes speaker burn out. The transient peaks usually cause little damage if kept inside the speaker’s band limits.

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Peavey VSX 48 manual Dynamics
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VSX 48 specifications

The Peavey VSX 48 is a sophisticated digital loudspeaker management system designed for professional audio applications, blending advanced features with user-friendly functionality. With the ability to manage and optimize sound across various environments, the VSX 48 stands out as a powerful tool for sound engineers and audio professionals.

One of the main features of the VSX 48 is its high-bandwidth digital signal processing capabilities. Operating at a 48 kHz sample rate, it ensures pristine audio quality and minimal latency. The system boasts 4 input channels and 8 output channels, allowing for extensive routing and configuration possibilities. Each channel is equipped with a 24-bit AD/DA converter, ensuring that the audio signal remains transparent and true to the original source.

The VSX 48 is built around a comprehensive set of processing tools, including parametric equalizers, crossover filters, and delay options. The 8-band parametric equalizers for each output channel allow users to fine-tune frequencies with precision, helping to eliminate feedback and enhance sound quality. The crossover filters support various configurations, enabling the separation of audio signals into different frequency bands for optimized performance of amplifiers and loudspeakers.

Another distinctive technology is the integrated feedback suppression system. This feature actively identifies and reduces feedback in real-time, allowing for a cleaner and more professional sound. The delay functionality is particularly useful for time-alignment of multiple speaker arrays, ensuring that sound reaches the audience in a coherent and unified manner.

The device also features an intuitive user interface, accessible via both its front-panel controls and a computer-based software application. This allows users to monitor performance and make adjustments easily, whether on-site or remotely. The MIDI compatibility of the VSX 48 also enables external control and integration into complex audio setups, increasing its versatility.

Durability is a key characteristic of the VSX 48, designed to withstand the rigors of touring and live sound environments. With its sturdy chassis and reliable components, it is built for longevity, making it an ideal investment for any audio professional.

In summary, the Peavey VSX 48 is a robust and flexible loudspeaker management system that combines advanced digital processing technologies with user-friendly operation. Its comprehensive features make it a valuable asset for achieving optimal sound quality in various audio environments. Whether for live performances, installations, or sound reinforcement, the VSX 48 stands out as a reliable choice for audio excellence.
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