Dual Channel 24 Bit Digital Processing Suite

PRODUCT OVERVIEW

The DPF3103 'digEQ' is a complete signal processing system available in a stand-alone 2U rack unit, or in 1U Slave units. The digEQ system may be configured as individual dual channel processors or as a multichannel network, controlled remotely. The intuitive user interface makes the digEQ system particularly appropriate to live sound use, where fast access is required, and where the system may be used by non familiar engineers. However, it is also appropriate for fixed installations, where a Slave unit can provide all the required processing in a tamper proof package, and in broadcast, recording, and post production applications.

The digEQ system combines simultaneous 24 bit equalisation and dynamics processing functions within a single product. Intuitive and easy to use, it offers dual 31 band 2/3rd Octave Graphic EQ, Parametric and Shelving EQ, with variable High and Low Pass Filters, Compressor/Limiter and Noise Gate. Optional processors include Time Delay and Real Time Analysis. The digEQ may be connected with an analogue source as standard, or fitted with a digital

I/O module for integration into digital systems. The digEQ will store complete system settings in up to 98 nameable memories. Settings may be recalled live, with no interruption of the signal, and a Compare function allows instant toggling between two settings.

The digEQ exists either as a Master unit, which can be operated as a stand-alone dual channel processor, or a Slave unit that requires external programming. Both Master and Slave units can be incorporated into a multichannel network under the control of a single Master unit, Remote Control unit, digEQ Windows software, or any external midi controller. In this way, up to 32 channels of audio processing may be controlled remotely and linked for fast program change.

MODES OF OPERATION

In Graphic mode, each of the 31 ISO centre frequencies may be accessed instantly via a dedicated frequency button, or by the data wheel. A and B channels may be varied separately or linked together for stereo operation with offsets, and pressing two frequency buttons simultaneously will allow cut and boost of a range of frequencies. A second press of the Graphic function button displays the resultant 'real curve'.

With the Parametric & Filters mode selected, highlighted buttons give direct access to the Parametric frequencies, gain and bandwidth, to the Shelving EQ frequency and gain and to the Hi-Lo filters frequency and slope.

The Dynamics button brings up the Compressor screen, and with a second push, the Noise Gate screen. The

Compressor may be configured as either Hard or Soft Knee and features variable Threshold, seven compression ratios plus LIMIT, variable Attack and Release and Make Up Gain. The Noise Gate is of the expander type and may be configured with Hard or Soft Knee with variable Threshold, six expansion ratios plus GATE, variable Attack and

Release.

The RTA button brings up the RTA menu (if the option is fitted). The RTA option is an internal plug-in module running from its own DSP and can therefore be operated without interfering with the processing of either audio channel.

Analysis is filter based to give greater accuracy at low frequencies. Analysis may be performed on internally generated Pink Noise or on Programme material, with selectable range and reference. The signal can be measured with a range of selectable time constants and may be displayed as an instantaneous or accumulated response.

The software also features compensation for different microphone responses with four storable configurations. A number of post processing functions are available including Invert, Normalise, Average and Sum.

The DELAY button brings up the Digital Delay menu (if the option is fitted). Time delay is displayed in samples, feet, metres, seconds and frames and provides up to 1.34 seconds of delay time.

A Utilities button gives access to the DigEQ's system set-up menu, allowing selection of Input or Output, Peak or VU metering, Analogue sample rate or Digital input mode, Slave address and MIDI IN and OUT channel selection.

British

Originals

In keeping with our policy of continuous improvement LA Audio reserves the right to alter specifications without prior notice.

Manufactured in the UK by LA Audio, 6-24 Southgate Road, London, N1 3JJ.

Tel: +44 (0)207 923 7447, FAX: +44 (0)207 241 3644. Web: www.laaudio.co.uk. email: [email protected]

An SCV International Group Company

SPECIFICATIONS

SYSTEM PERFORMANCE

Frequency response: 10Hz to 20kHz

±

0.5dB

Input impedance: 10k (balanced)

Output impedance:

Max input level:

<10R (balanced)

+20dBu

Max output level:

Nominal level:

Signal to Noise ratio:

THD @ +4dBu:

+20dBu

0dBu

>95dB

<0.012%, 10Hz-15kHz

<0.04% at 20kHz

GRAPHIC EQUALISER

Centre frequencies: (Hz): 20, 25, 31.5, 40, 50, 63, 80,

100, 125, 160, 200, 250, 315, 400. 500, 630, 800, 1k,

1.25k, 1.6k, 2k, 2.5k, 3.15k, 4k, 5k, 6.3k, 8k, 10k, 12.5k,

16k, 20k.

Bandwidth:

Gain:

2/3rd Octave

±

15dB, 0.5dB steps

PARAMETRIC EQUALISER

Number of bands: Up to 3 per channel

Frequency range:

Gain:

Bandwidth (Q):

20Hz to 20kHz with 1/18th

Octave resolution

-40dB to +15dB, 0.5dB steps

1/32 to 2 Octaves

HIGH & LOW PASS FILTERS

High Pass filter: 16Hz to 2kHz with 1/18th

Octave resolution

Low Pass filter:

Response:

160Hz to 20kHz with 1/18th

Octave resolution

2nd Order Bessel

2nd Order Butterworth

4th Order Linkwitz-Riley

SHELVING EQUALISER

LF frequency:

HF frequency:

Gain:

16Hz to 2kHz with 1/18th

Octave resolution

160Hz to 20kHz with 1/18th

Octave resolution

±

8dB, 0.5dB steps

COMPRESSOR/LIMITER

Knee type: Soft or hard knee

Threshold: 0dB to -40dB, 0.5dB steps

Ratio:

Attack time:

Release time:

1.4:1, 2:1, 3:1, 4:1, 6:1, 8:1,

16:1 and LIMIT

10

µ s to 100ms

20ms to 5s

EXPANDER/GATE

Knee type:

Threshold:

Ratio:

Attack time:

Release time:

Soft or hard knee

0dB to -80dB, 1.0dB steps

1:2, 1:3, 1:4, 1:6, 1:8, 1:16, and GATE

10

µ s to 100ms

20ms to 5s

INTERFACES

Midi:

Computer:

Digital:

POWER

Power requirement:

Voltage:

CONNECTORS

Analogue input:

Analogue output:

Digital I/O option:

Midi in/out/thru:

Computer Midi I/F in/out:

PHYSICAL

Dimensions:

Weight:

RTA option

Spectrum analysis:

Standard:

Units of display:

Display Scales:

Source:

Microphone input:

Sensitivity:

Phantom Power:

Calibration:

31 band 1/3rd octave,

EN-61260, Peak or Vu dB SPL or dBu

30dB, 60dB

External Microphone digEQ input digEQ output

Balanced female 3 pin XLR

Adjustable

+15V

4 Programmable response memories

Noise Generator:

EQ interaction:

RTA Curve memories:

Adjustable level Pink Noise

Semi automatic and automatic equalisation

50 memories

DIGITAL DELAY option

Units:

Resolution:

Range:

Seconds, Metres, Feet,

Samples, Frames (24fr/s,

25fr/s, 30fr/s, 30 Drop Frame)

0.1mS, 0.01m, 0.1ft, 1 sample

1.3ms to 1.36s

0.45m to 470m

1.5ft to 1,540ft

Temperature Compensation:

0.03 fr to 32fr.

0

∞

C - 40

∞

C (32F - 104F)

Program change & SysEx

MIDI

AES/EBU, S/P-DIF (option)

30VA

90-240VAC 50-60Hz auto switching

3 pin female XLR (pin 2 hot)

3 pin male XLR (pin 2 hot)

AES/EBU on XLR

S/PDIF on Phono (RCA)

Word Clock-in on BNC

5 pin DIN

5 pin DIN

483mm (19") W

230mm (9") D

89mm (3.5") H

4.3Kg (9.5lbs)

British

Originals

In keeping with our policy of continuous improvement LA Audio reserves the right to alter specifications without prior notice.

Manufactured in the UK by LA Audio, 6-24 Southgate Road, London, N1 3JJ.

Tel: +44 (0)207 923 7447, FAX: +44 (0)207 241 3644. Web: www.laaudio.co.uk. email: [email protected]

An SCV International Group Company

DIMENSIONS

A U D I O

STORE

COMPARE

RECALL

ACCESS

UTILITY

GRAPHIC

PARAMETRIC

& FILTERS

DYNAMICS

RTA

GAIN

REF

FLAT

DELAY

RANGE

BYPASS

20 31.5

50 80 125 200 315 500 800 1k25 2k 3k15 5k 8k 12k5 20k

25 40 63 100 160 250 400 630 1k 1k6 2k5 4k 6k3 10k 16k

DATA

PARAMETER

PRESS TO SELECT

ENTER

PARAMETER

ESCAPE

DISPLAY

POWER

483.0

88.0

230.0

DPF 3103

No user servicable parts inside

Disconnect from mains before removing cover

WARNING: This equipment must be earthed

SERIAL NUMBER

230V 50Hz

T1A

Panel for Expansion options

Output Input

DIGITAL

S/P DIF

Out

Word Clk

In

Output

MIDI 1

Thru Input

Panel for RTA option

Output B Output A

ANALOGUE

Input B Input A

British

Originals

In keeping with our policy of continuous improvement LA Audio reserves the right to alter specifications without prior notice.

Manufactured in the UK by LA Audio, 6-24 Southgate Road, London, N1 3JJ.

Tel: +44 (0)207 923 7447, FAX: +44 (0)207 241 3644. Web: www.laaudio.co.uk. email: [email protected]

An SCV International Group Company