481 Complete Equalizaton & Loudspeaker Management System

Inputs

Number of Inputs:

4

Connectors:

Euroblock

Type:

Electronically balanced/RF filtered

Impedance:

>40k ohm

Maximum Input Level:

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

CMRR:

>40 dB typical, >55 dB at 1kHz

Outputs

Number of Outputs:

8

Connectors:

Euroblock

Type:

Electronically balanced, RF filtered

Impedance:

120ohm

Max Output Level:

+25.5 dBu into 1k ohm
+22dBu into 600 ohm

A/D Performance

Type:

dbx Type IV™ Conversion System

Dynamic Range line:

>112 dB unweighted, 115 dB A-weighted Type IV®

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:

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

Weight:

8 lbs.

Shipping Weight:

9.5 lbs.