DriveRack™

Appendix A

 

 

 

 

A.10 “Pinking” A Room

 

 

 

 

To optimize sound performance in a live application, you may wish to “Pink” a room with the Real Time Analyzer available in the 480 and 480R DriveRack™ units. Pink Noise is defined as equal loudness at all frequencies. Pinking a room gives you a good starting point for fine-tun- ing the room to your desired requirements. The built-in pink noise generator (along with the built-in RTA), will help provide an accurate reading of the outputs of your speakers. Although the 481 and 482 do not have an LCD, they also include an RTA module, which can be accessed and viewed through the GUI interface. The recommended procedure for “pinking” a room using the 480 or 481 DriveRack™ is as follows.

•Connect a measurement microphone (omni-directional with flat response) to input 3 or

4of the 480, or the RTA input of the 480R.

•Connect a measurement microphone (omni-directional with flat response) to input 3 or

4of the 480, or the RTA input of the 480R.

•On page seven of the Utility menu, make desired adjustments to the Mic pre set-up.

•From program mode, use either the OTHER or PARAMETER 2 and 3 buttons to move to the inputs which are sending signal to your speakers.

•Once you have reached the desired inputs, use the PREV PG or NEXT PG buttons to move to page 2 of the input section.

•Use the PARAMETER 1 knob to activate the pink noise generator and use the PARA- METER 2 knob to set the desired noise level.

•Using a program that utilizes an RTA, press the RTA button and use the PARAMETER

1knob to select the Input channel which uses the RTA mic (either 3 or 4).

•Once the input has been selected, the RTA display should be displaying an accurate read- ing of the pink noise being produced by the loudspeakers.

•Take notice where the frequency spectrum is either boosted or cut.

•At this point, you simply toggle between the graphic EQ and the RTA, while adjusting the graphic EQ to compensate for the boosts or cuts in the frequency spectrum.

•The RTA will display the response of the system as changes are made.

•At this point you will have completed the process of pinking the room and now you can fine-tune your system to your desired requirements.

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DriveRack™ User Manual

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dbx Pro 480 user manual Pinking a Room
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480 specifications

The dbx Pro 480 is a professional-grade dynamics processor renowned for its versatility and exceptional performance in various audio applications. Designed for both live sound and studio environments, the dbx Pro 480 stands out as an essential tool for sound engineers and musicians alike.

One of the main features of the dbx Pro 480 is its dual-channel operation, which allows users to process two audio signals simultaneously. This functionality makes it particularly advantageous for stereo mixes, providing the ability to manage dynamics across left and right channels cohesively. The unit employs patented dbx OverEasy compression technology. This unique approach to compression allows for smooth transitions between compression and limiting, preventing abrupt changes in audio levels that can disrupt the listening experience. The result is a more musical sound, making it ideal for vocals, instruments, and other dynamic sources.

Additionally, the dbx Pro 480 boasts comprehensive control options, including adjustable ratio, threshold, attack, and release parameters. This level of control enables users to tailor the dynamics processing to fit specific audio material, whether subtle shaping or more aggressive control is required. The inclusion of a high-pass filter on the sidechain input further enhances its versatility, allowing for frequency-dependent dynamics processing that can be particularly useful in managing low-end rumble or controlling sibilance in vocals.

Another notable characteristic of the dbx Pro 480 is its robust build quality, designed to withstand the rigors of both studio and live environments. The device features a rugged metal chassis that protects its internal components while providing reliable performance under various conditions. Additionally, high-quality XLR inputs and outputs ensure that audio signals remain clean and free of interference.

In terms of connectivity, the dbx Pro 480 is equipped with balanced connections to minimize noise and signal degradation, making it suitable for professional setups. Its intuitive front-panel interface includes LED metering for easy monitoring of input and output levels, facilitating prompt adjustments on the fly.

In conclusion, the dbx Pro 480 is a powerful dynamics processor that blends advanced technology with user-friendly features. Its dual-channel processing, unique compression algorithms, and robust build quality make it a top choice for audio professionals seeking to enhance their sound with precision and control. Whether in a recording studio or a live performance setting, the dbx Pro 480 continues to be an invaluable asset in the audio processing landscape.
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