dbx Pro 481 DriveRack Inputs, Outputs, System Performance, Pre EQ, Notch Filters, Pre Delay

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Inputs

 

Inputs:

4

Connectors:

Euroblock

Type:

Electronically balanced/RF filtered

Impedance:

>40kΩ

Max Input Level:

Hardware selectable for +30, +22, +14, dBu

CMRR:

>40 dB typical, >55 dB at 1kHz

Outputs

 

Outputs:

8

Connectors:

Euroblock

Type:

Electronically balanced, RF filtered

Impedance:

120Ω

Max Output

 

Level:

+25.5 dBu into 1kΩ

 

+22dBu into 600Ω

A/D Performance

 

Type:

dbx Type IV™ Conversion System

Dynamic

 

Range line:

>112 dB unweighted, 115 dB A-weighted

Type IV™

 

dynamic range:

127 dB with transient material,A-weighted, 22kHz BW 125 dB with transient

 

material, unweighted, 22kHz BW 119 dB typical with program material,

 

A-weighted, 22kHz BW

Sample Rate:

48kHz

A/D Wordlength:

24 bits

D/A Performance

 

Dynamic Range:

112 dB unweighted, 115 dB A-weighted

Sample Rate:

48kHz

D/A Wordlength:

24 bits

System Performance

 

Internal Wordlength:

48 bits

THD + Noise:

0.003% typical at +4dBu, 1kHz, 0dB input gain

Frequency Response:

20Hz- 20kHz, +/-0.5dB

Interchannel Crosstalk:

<-85dB at 1kHz, 0dB input gain

Pre EQ

 

Type:

One 31-band Graphic EQ per input channel, or

 

9 band Parametric EQ per input channel

 

RTA can be substituted for EQ in channels 3 and 4

Range:

+/-12 dB range

Notch Filters

 

Number:

1-5 per input channel not to exceed 10 for all input channels

Pre Delay

 

Length:

680ms/channel

Crossover

 

Type:

1x2, 1x3, 1x4, 1x5, 1x6 2x3, 2x4, 2x5, 2x6, 2x7, 2x8,

 

3x4, 3x5, 3x6, 3x7, 3x8, 4x6, 4x8

Filter Type:

Butterworth, Bessel, or Linkwitz-Riley

Slope:

6, 12, 18 or 24 dB/octave for Butterworth or Bessel filters

 

12, 24, 36 or 48 dB/octave for Linkwitz-Riley filters

Post EQ

 

Type:

Parametric

Number:

4 EQ bands per output channel

Range:

+/-15 dB range

Dynamics

 

Type:

Compressor/Limiter with PeakStopPlus™

Attack/Release:

Program Dependent

Linking:

All 8 bands are linkable

Post Delay (Driver Alignment)

 

Length:

170 ms per output channel

Pink Noise Generator

 

Position:

Pink noise inserted on selected input(s)

Phase Compensation

 

Number:

One per output channel

Amount:

0-180 degrees phase shift

Output Polarity:

Reversible

Miscellaneous

 

Output Transformers:

Optional

Network:

Proprietary RS-485 Backbone

GUI:

RS-232 interface for computer display and

configuration

 

Remote:

Optional dbx 480R

RTA Microphone:

Optional

ROM Upgrade:

Flash upgradeable through RS-232

Power Requirements

 

Watts:

100-240V - 50/60 Hz

 

35 Watts

Dimensions

 

Dimensions:

Height- 1.75” X Width- 19” X Depth 7.90”

Weight

8 lbs.

Shipping Weight:

9.5 lbs.

dbx engineers are constantly working to improve the quality of our products. Specifications are, therefore subject to change without notice.

FOR MORE INFORMATION CONTACT: dbx Professional Products 8760 S. Sandy Pkwy. Sandy, Utah 84070 Phone (801) 568-7660 Fax (801) 568-7662 customer@dbxpro.com http://www.dbxpro.com

The Professional’s Choice In Signal Processing

A Harman International Company

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Contents Harman International Company Phase Compensation Pre DelayPost Delay Driver Alignment Power Requirements

481 DriveRack specifications

The dbx Pro 481 DriveRack is a powerful audio processing tool designed for professional sound engineers and musicians seeking to enhance their live sound and recording setups. This versatile device serves multiple purposes, including equalization, dynamics processing, and feedback elimination, making it an essential component for both live performance and studio applications.

One of the standout features of the dbx Pro 481 is its advanced automatic feedback suppression technology. This feature uses sophisticated algorithms to detect and eliminate feedback before it becomes a problem, allowing for a smooth and uninterrupted audio experience. This capability is invaluable in live settings where feedback can disrupt performances.

The DriveRack also includes a comprehensive equalization system, providing users with up to 31-band graphic EQ capabilities. The equalizer allows for precise control over frequency response, enabling sound engineers to tailor the audio output to fit the acoustic characteristics of the space. With its intuitive interface, users can easily adjust the EQ settings to ensure that the sound meets their desired specifications.

Another notable characteristic of the dbx Pro 481 is its digital signal processing (DSP) capabilities. The built-in DSP allows for high-quality signal manipulation with low latency, ensuring that the audio remains clear and natural. This feature is particularly beneficial when applying compression, limiting, and other dynamic processing techniques, as it eliminates the sonic artifacts often associated with lower-quality processors.

Additionally, the dbx Pro 481 features a user-friendly LCD screen that provides real-time feedback on various parameters, making it easy to monitor and adjust settings on the fly. The intuitive layout allows users to navigate through its various functions seamlessly, ensuring that they can focus on their performance rather than the equipment.

The device also offers multiple input and output options, facilitating integration with various audio systems. This flexibility ensures that it can be used in a wide range of applications, from small venues to large-scale events.

In summary, the dbx Pro 481 DriveRack integrates advanced feedback suppression, comprehensive equalization, powerful DSP capabilities, and a user-friendly interface into a single device. Its versatility and performance make it a go-to choice for audio professionals aiming to achieve top-notch sound quality in any environment.
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