DriveRack™

Detailed Parameters

Section 4

more natural and will be used for most applications. When it is gentle (natural sounding or light) compression that you are looking for, the compressor offers VariKnee™. VariKnee™ gives you ten levels of OverEasy® compression to choose from (1 being almost hard knee and 10 being the most OverEasy®). This lets you choose the exact knee that is needed for the dynam- ic effect you are looking for.

Threshold -40 to +20dBu

Threshold is the signal level at which the 480, 481 and 482 DriveRack™ units start to compress the signal. If the level is set to -10 dBu, than any signal larger than -10 dBu is compressed while any signal that has a level that is lower than -10dBu is left at the same signal level. Light com- pression is where only the loudest parts of the signal go over the threshold. Very heavy com- pression can be achieved by setting the threshold low enough that almost the entire signal con- tent is over the threshold. For most signals the most natural compression is achieved when most of the signal content remains just below the threshold and only the peaks cross the threshold.

Ratio 1.0 to Inf:1

Ratio is the amount the 480, 481 and 482 DriveRack™ units reduce the signal level of the sound that is above the threshold. A 2:1 ratio means that if the incoming signal is 2dB over the thresh- old the 480, 481 and 482 DriveRack™ units will compress the signal, and outputs a signal that only goes 1dB over the threshold. For light compression choose a lower ratio, while a heavy compression requires a higher ratio. A setting of Inf:1 sets the compressor act as a limiter, and engages peakstop+ if turned on.

Gain -20 to +20 dB

This parameter is used to compensate for the gain lost during compression. By using heavy compression on a signal and then boosting the signal with the output gain, the user can create a signal that sounds much louder than it actually was.

4.8 Speaker Alignment Delay (DLY)

The 480, 481 and 482 DriveRack™ units also offer a speaker alignment delay which is ideal to use for compensating signal delay that occurs between speaker driver components such as speaker clusters or between internal speaker components such as horns, speakers and sub- woofers within speaker cabinet. The Speaker alignment delay is also ideal for compensation the difference in that high and low frequencies travel. The parameters for the Speaker Alignment Delay are as follows and are user adjustable:

Delay On/Off

Turns the Speaker Alignment delay on and off.

Units - Seconds, Feet or Meters

Selects the unit of measurement for the delay.

Length

Sets the amount of Speaker Alignment delay time. Delay times include: Seconds- 0-170.64ms, Feet- 0-192.32 and Meters - 0.0-58.5. Fine adjustments are made in 10ms increments.

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dbx Pro 480 user manual Speaker Alignment Delay DLY, Threshold -40 to +20dBu, Ratio 1.0 to Inf1, Gain -20 to +20 dB
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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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