professional audio signal processing for broadcast & sound...

531E Graphic Equalizer 2



551E Five Band Parametric EQ 3

552E Dual Five Band Parametric EQ 3

9022 2x2 DSP Engine 4

Audio Workplace™ 4

565E Dual Compressor/Limiter/Expander 5

562E Windowing Expander/Gate 5

421m AGC-Leveler 6

422 Stereo AGC-Leveler 6

501 Peak-RMS Compressor/Limiter 7

571 SPL Computer 7

572 SPL Computer 7

528E Voice Processor 8

527E Voice Processor 8

628 Digital Voice Processor 8

402 Dual Output Delay 9

606 Delay F/x Machine 9

610 Broadcast Audio Delay 9

440 Foreground Audio Controller 10

450 Dual Zone Priority Mixer 10

420 Stereo Power Amplifier 11

581E Distribution Amplifier (4x4) 11

- -

301 Low Distortion Comp/Limiter 12

302 Dual Microphone Preamplifier 12

303 Interface Amplifier (Bi-directional) 12

304 Headphone Amplifier 13

305 Distribution Amplifier (1x4) 13

306 Preamp/Ducker 13

307 Dual Isolation Transformer 13

1

You have to be an individualist to be a successful sound contractor, consultant,

integrator, or engineer. Every venue, every voice, every budget, every client is different.

You need to put the pieces together in such a way that everything sounds perfect and

looks easier than it is. At Symetrix, we like to think of ourselves as being like you —

service-oriented, independent-minded, and totally obsessed with premium-quality

sound. Here’s what a few of us have to say about that.

Dane Butcher Founder and President

Symetrix actually started out as a sound system installation and service company.

That was in 1976. Since then, we’ve worked hard to retain the personal and flexible

attitude we began with, even though you can now find our units in stadiums, casinos,

airports, malls, radio stations, and studios around the world. From the start, our

mission was to create products we’d want to use ourselves.

Steve Kawasaki Director of Sales and Marketing

We weren’t the first to create an ambient-level controller, but our 571 SPL Computer

was probably the first to do it right. It was a fiendishly complex task to create a box

that listens to all the ambient sounds in an environment and makes intelligent

decisions about when to make the system quieter or louder. We were successful

because we truly understand the integration between electronics and acoustics. We

make it our job to learn the details of our customers’ sound systems.

Nathan O’Neill Design Engineer

Designing our graphic EQs was even more intense than usual. We started by doing an

exhaustive survey of existing graphics while also interviewing customers who used

them. Only when we understood how we could extend the state of the art did we

proceed. We worked objectively with extensive computer modeling, and once we had

an actual first prototype, we listened to it — a lot. After quite a few design reiterations,

our alpha and beta test sites gave us the thumbs-up. Good design takes a long time.

And that’s OK.

Julie Denton Customer Service Coordinator

We build our products to be really rugged and dependable. There’s industrial-grade

connectors and pots, surface-mount components for most products, plus full

functional computer testing of every unit. And a final human listening test. If a

product should ever fail, our repair service is a 24-hour thing. If we get a unit in the

morning, it’s almost always out of here that afternoon. It has to be.

Whatever Symetrix product you use, you can count on it for remarkable results in any

environment. After all, we built it just the way you would.

. SO DO WE.

Monaural, 31 bands, long throw 60 mm sliders, low-cut and high-

cut filters, for concert and installed sound. Flatten system response

and increase gain before feedback. Global range switch chooses

+/- 6 or +/-12 dB cut or boost. Advanced filter design delivers ultra

low noise and distortion, minimum ringing and phase shift.

- Internal power supply, gold plated XLR’s + 1/4" jacks.

- Metal shaft, grounded center detent plastic film slide pots.

- Less than .002% THD+Noise (measured with EQ in!).

EQUALIZERGRAPHIC

+12

+6

20K16K12.5K10K

0

-6

-12

16K 20K10K 12.5K

8K6.3K5K4K3.15K2K 2.5K1.25K800 1K630500400315 1.6K

6.3K 8K4K 5K3.15K2K 2.5K1.25K800 1K500315 400 630 1.6K

250160 20010063 80 1254025 31.520

+12

+6

50

200160 25010063 80 125

18KHIGH CUT

±12dB

BYPASS

42K

3K 65K

MODE 0

4025 31.5

-6

-12

20 50

22

LOW CUT

50UINPUT

5K115

6 260

8

∞- +15

CLIPE10dB

0dB

POWER

-20dB

LEVEL

531CUT FILTERS

+6

+3

-3

-6

+6

+3

±6dB

-3

-6

- Internal power supply, gold plated XLR’s and 1/4" jacks.



- Internal power supply, gold plated XLR’s + 1/4" jacks.



+12

0

16K10K 12.5K 20K

-12

+12

16K12.5K10K 20K

-12

16K12.5K10K 20K

0

8K5K4K 6.3K3.15K2K 2.5K1.25K800 1K500400315 630 1.6K

4K 8K6.3K5K3.15K2K 2.5K

4K 8K6.3K5K3.15K2K 2.5K

1.25K1K800500400315 630

1.25K1K800500400315 630

1.6K

1.6K

25020016010063 80 1254025 31.520

0CH118K

HIGH CUT

MODE

50

250160 20010063 80 125

25020016010063 80 125

4025 31.5

BYPASS

±12dB

3K 65K

18KHIGH CUT

CH2

20

4025 31.5

±12dB

BYPASS

42K

3K 65K

MODE

20

0

50

50

42K

22 50

LOW CUTU

INPUTCLIP

CH1 LEVEL

115

6 260

8

∞ +15

LOW CUTU

INPUT

0dB

-20dBECH2 LEVEL

1155K

6 260

8

∞ +15

10dB

-20dB

0dB

POWER

22 50CLIP

EQUALIZERGRAPHIC532

5K10dB

CH1 CUT FILTERS

CH2 CUT FILTERS

+6

-6

+6

-6

±6dB

±6dB

+12

20K16K10K 12.5K

0

-12

8K5K 6.3K3.15K2K 2.5K 4K1.25K800 1K630500400315 1.6K

+12

0

-12

20K16K10K 12.5K8K5K 6.3K3.15K2K 2.5K 4K1.25K800 1K630500400315 1.6K

8K1.25K315 400 500 630 800 1K 3.15K1.6K 2.5K2K 4K 6.3K5K 20K12.5K10K 16K

250160 20010063 80 1254025 31.520

+12

50

HIGH CUT18K

MODECH1

BYPASS

±12dB42K 0

-12

65K3K

CH1 LEVEL

LOW CUT

22 50

INPUTU

5K1158

CLIP

10dB

0dB

+15-20dB

E

∞ 2606

533

CH1 CUT FILTERS

+12

18KMODECH2

±12dB

BYPASS3K 65K

42K 0

HIGH CUT

25020016010063 80 1254025 31.520

-12

50

CH2 LEVEL

22 50

INPUTU

115

6 260

8

+15

5K

CLIP

0dB

10dB

LOW CUT

EQUALIZER

POWER

∞-20dB

CH2 CUT FILTERS

20 25 31.5 40 50 63 80 100 125 160 200 250GRAPHIC

+6

-6

+6

-6

+6

±6dB

-6

+6

-6

±6dB

Two channels, 31 bands, long throw 45mm sliders, with low cut

and high cut filters for concert and installed sound. Flatten system

response and increase gain before feedback. Global range switch

chooses +/- 6 or +/-12 dB cut or boost. Advanced filter design delivers

ultra low noise and distortion, minimum ringing and phase shift.

Two channels, 31 bands, 20mm faders, with low and high cut

filters for concert and installed sound. Flatten system response and

increase gain before feedback. Global range switch chooses +/- 6 or

+/-12 dB cut or boost. Advanced filter design delivers ultra low

noise and distortion, minimum ringing and phase shift.

2

(dB)

BAND 5

(OCT)(Hz)BANDWIDTH CUT/BOOST

01.0350 850

1.5K

(dB)CUT/BOOST

BAND 4

(OCT)(Hz)FREQUENCY BANDWIDTH

0

140X1

X10

1.0350 850

1.5K140

(dB)(OCT)CUT/BOOSTFREQUENCY

(Hz)BANDWIDTH

BAND 3

01.0

X1

X10

350 850

1.5KX1

X10

140

FREQUENCY

+122.0100 2K .05

BAND 5

-20

(dB)

0

(OCT)(Hz)

1.0350 850

CUT/BOOSTBANDWIDTH

+12

1.5K

100 2K .05 2.0 -20

X0.1-20 +12.05100 2K

BAND 4

2.0

(dB)

0

(OCT)(Hz)

1.0350 850

BANDWIDTHFREQUENCY CUT/BOOST

X0.1+12.05 2.0 -202K100X0.1

BAND 3

(dB)(OCT)

01.0

(Hz)

850350

FREQUENCY BANDWIDTH CUT/BOOST

140X1

X10

X0.1-20 +12

1.5K140

2K100 .05 2.0

X1

X10.05 2.0 +12-20 X0.1

1.5KX1

X10

140

100X0.1 2K

FREQUENCY

BAND 2

(dB)(OCT)BANDWIDTH

(dB) (Hz)FREQUENCY

01.0850

1.5K

3500

140X1

X10

BAND 1

BANDWIDTH(OCT)

FREQUENCY(Hz)

HIGH CUT

1.0350 850

1.5K

18K

X1

X10

1155K 42K

140

CUT/BOOSTLOW CUTINPUTLEVEL (dB)

CHANNEL 1

22 50U

8

ACTIVEBYPASS

CUT BANDS

-20.052K 2.0

BAND 2

100-20 +12 X0.1

(dB)(OCT)

01.0850

(dB)

3500

(Hz)FREQUENCY BANDWIDTH

2.0.052K100

BAND 1

X0.13K 65K

(OCT)(Hz)

1.0850350

42K

18K

5K

HIGH CUT FREQUENCY BANDWIDTH CUT/BOOST

1.5K

-202K .05 2.0

140

X10

X1

-20 +12 X0.1 100

1.5K

100 2K 2.0.05

X1

X10

115

3K 65K X0.1

140

2606+15-15CLIP

CHANNEL 2

LEVEL (dB)

5022UACTIVEBYPASS

LOW CUTINPUTPARAMETRICEQUALIZER

DUALFIVE BAND

8

-15 +15 6 260POWER CLIP

CUT BANDS

552E

+12

CUT/BOOST

+12

CUT/BOOST

A stereo parametric EQ for concert or installed sound, recording,

or broadcast. Rock-solid construction and easy to use for creative

or corrective EQ. Sweeten vocal tracks. Tune out feedback.

Get that huge drum sound. Flatten studio monitors. Create your

signature sound.

A monaural parametric EQ for concert or installed sound,

recording, or broadcast. Rock-solid construction and easy to use

for creative or corrective EQ. Sweeten vocal tracks. Tune out

feedback. Get that huge drum sound. Flatten studio monitors.

Create your signature sound.

- Five identical, full range, overlapping bands with

high & low cut filters.


- Gold plated XLR’s + 1/4" jacks, bypass relay,

internal power supply.

BAND 5

BANDWIDTH CUT/BOOSTCUT/BOOST

BAND 4

FREQUENCY BANDWIDTHCUT/BOOSTFREQUENCY BANDWIDTH

BAND 3

FREQUENCY

0850350 1.0

1.5K

2K100 .05 2.0 -20 +12

0350 850 1.0

140X1

X10

1.5K140

01.0850350

X1

X10

1.5KX1 140

X10

X0.1X0.1X0.1 2K100 .05 2.0 -20 +12 2K100 .05 2.0 -20 +12

(OCT)(OCT)(Hz) (dB) (dB)(OCT)(Hz) (Hz) (dB)

BAND 2

BANDWIDTHFREQUENCY

BAND 1

BANDWIDTHFREQUENCYHIGH CUT CUT/BOOSTLOW CUTINPUT

SYSTEM CUT BANDS

850 01.03500

1.5K140X1

X10

350 850 1.018K

1.5K42K

X15K

115

X10

140

X0.1X0.165K3K 100 2K .05 +122.0 -20 2K100 .05 2.0 -20

5022UACTIVEE

8

BYPASS

551

EQUALIZERPARAMETRICFIVE BAND

POWER CLIP-15 260+15 6

LEVEL (dB) (OCT)(Hz) (dB) (OCT)(Hz) (dB)

+12

CUT/BOOST

- Five identical, full range, overlapping bands with

high & low cut filters.


- Gold plated XLR’s + 1/4" jacks, bypass relay,

internal power supply.

3

Symetrix, Inc. • (425) 787-3222 •␣ www.symetrixaudio.com

A programmable DSP Processor for the installed sound market.

Symetrix Audio Workplace™ software provides real-time control

over multiple audio functions from a Windows 95/98 PC

environment. Use Audio Workplace™ to program presets, adjust

parameters or download new DSP code in the field.

4

- Two channel, DSP-based EQ, Hi/Low

Pass Filter, Room Delay and Multiband Limiter.

- Software control via front or rear panel RS232

connections leaves chassis tamper-proof.

- Delta-sigma 24-bit A/D and D/A conversion.

™

Audio Workplacetm

is a Windows 95/98

application that

provides complete

user control over the

9022 and its powerful

feature set. Using

Audio Workplacetm

and a host PC, system

designers and installers

can program presets,

adjust audio parameters

and download new

DSP code for permanent

nonvolatile storage.

RS-232 CONTROLSYSTEM STATUS

INPUT

CH2

CLIPCLIP

CH1

SIGNAL

BYPASS

SIGNAL

BYPASS

COMMPOWER

PRESET

21

4

6

3

5

87

ENGINE2X2 DSP9022

CH2 OUTPUT

-10 0dBu CLIP-3 -20 -12 -9 -6

CH2 COMPRESSOR

-6 -4 -2 -12 -15 -10 -8 -2 -6 -18 -12

CH2 EXPANDER

-25

CH2 LIMITER

0IN

+10-10+13 BYPASS

+20 -20

GAIN (dB)

4 +5

-36 2.5

-10 -12

-25 -25 0 +5

-12 10SLOW 1FAST

RELEASE RATIO (X:1)-40 +20SLOW

RELEASE BYPASS+10

THRESHOLD (dBu)FAST

THRESHOLD (dBu) THRESHOLD (dBu)BYPASS

CH1 OUTPUT

-10 0dBu CLIP

CH1 LIMITER

-12 -6 -9 -3 -20 -4 -6 -2 -15 -10 -12 -8 -25

CH1 COMPRESSORCH1 EXPANDER

-18 -2 -12 -6

IN

+5 0

+10-10-3 +13 BYPASS

4-10

62.5+5

+20 -20-12 BYPASS

THRESHOLD (dBu) GAIN (dB)101

RATIO (X:1)FAST-40 +20 SLOW

RELEASE

-12

-25 0

565DUAL

EXPANDER

COMPRESSOR/LIMITER/

E

SLOW BYPASS FAST

RELEASE+10

THRESHOLD (dBu) THRESHOLD (dBu)

-25

STEREO LINKSTEREO

DUAL MONO

⁄A two channel expander/gate for recording or live sound. Patch in

at channel inserts or effects returns. Eliminate microphone leakage,

headphone leakage and noise from drum, percussion and other

instrumental or vocal tracks. Tracks processed with the 562E are

much easier to mix.

0

TIMERELEASE

TIME

1 Sec 500ms

EXPANDER RATIOGATE RANGE

1:3802.5 Sec4 Sec 30ms

CHANNEL 2CH2 SIDECHAIN PROCESSING

TIME(dB)ATTACK

0 60ms

GAIN (dB)REDUCTI0N

ABOVEBELOW30

MAX12

3

THRESHOLD

300ms+20 AUTO60OFF -40MIN

HIGH CUT

20K 200Hz

1K

50Hz 4KOUTPUT

15HzKEY LISTEN

ASSIGN 20Hz

LOW CUT

40K1K 400HzIN GATE/EXP. 10HzW/FILTER

WINDOWADVANCE

50ms

HOLD

CHANNEL 1

TIMEGATE RANGE

EXPANDER RATIO

500ms 0

HOLDTIME

ATTACK TIME

60ms 1 Sec

RELEASE

1:32.5 Sec 80dB4 Sec300ms 50ms 30ms

(dB)THRESHOLD

ABOVEBELOW

0

HIGH CUT

WINDOW

30MAX

1220K

4K ADVANCE 3

REDUCTI0NGAIN (dB)

-40 +2060OFF40K400HzMIN

AUTO

LOW CUT

OUTPUT

200Hz15Hz

ASSIGN 20Hz 50Hz

EXT.KEY

EKEY LISTEN

1K10HzIN GATE/EXP.

BYPASS W/FILTER

562WINDOWINGEXPANDER/GATE

CH1 SIDECHAIN PROCESSING

1K

BYPASS

EXT.KEY

⁄ ⁄An extremely flexible, low distortion, high performance multi

dynamics processor for recording, live, or installed sound.

Two channels, each with simultaneous downward expander,

compressor, and peak limiter. Add impact and fullness to any

audio source. Control levels, reduce noise, prevent loudspeaker

and tape overload.

5


- Dynamics Squared™ circuitry reduces distortion during

gain reduction for better-sounding compression.

- Dual mono, or stereo operation. Balanced XLR

and unbalanced 1/4" connectors.

- Individual LED meters for each processing

section and output.

- Window Advance function delivers ultra fast attack

without clicks or pops.

- Key filters ensure precise triggering in noisy

environments.

- Auto Windowing feature creates smooth and

natural release cycle (decay).

-An automatic gain controller that makes quiet sounds louder and

loud sounds quieter by creating constant output levels. Increases

intelligibility in public address and paging systems. Operation is

automatic, precise, and completely transparent – no pumping,

breathing, or other side effects.

-Stereo automatic gain controller creates constant level audio.

Processes music, dialog or effects mastered at different levels and

outputs predictable, intelligible signals. Use for foreground and

background music installations, satellite, cable video, radio & TV

broadcast, and tape duplication.

OUTPUT LEVEL

SYSTEMSPEECH CURVEOUTPUT LIMITERAGC-LEVELERDOWNWARD EXPANDER (NR)

421mAGC-LEVELER

AUTO

BYPASS

RECOVERYAUTO-RELEASE

BYPASS

BYPASSIN IN

125Hz 6kHzLEVEL RATE

2:1

-54

-54 CLIP

INCREASEDECREASE

-48 -42 -36 -30 -6 -12 -18 -24 +12 +6 0VU

FASTSLOW

INBYPASS

ACTIVE

BYPASSSTEREO LINK0

BYPASS-15

THRESHOLD (Vu)

-8 +15

LIMIT

SLAVEMASTER

EXPAND

0VU +6 +12 -24 -18 -12 -6 -30 -36 -42 -48

-45-20

BYPASS

INPUT LEVEL

INBYPASS

TARGET OUTPUT LEVEL

HIGHLOW 4:1

RATIO

SLOWFAST

RELEASETHRESHOLD (Vu)

-35

OUTPUT LEVEL

+12 +6 0VU-6 -12 -18 -24 -30 -36 -42 -48 -54

0VU +6 +12 -24 -18 -12 -6 -30 -36 -42 -48 -54

INPUT LEVEL

CLIP

BYP

SYSTEMPEAK LIMITTARGET LEVELRATIODETECTOR

AGC/LEVELER

422STEREO

THRESHOLD (Vu) INPUT : OUTPUT OUTPUT LEVEL THRESHOLD (Vu)

+15

BYPASS

+5

-5

2.5 : 1

-15 INCREASE5 : 1 DECREASE BYPASS-20-45

LIMIT

IN

INBYPASS

BYPASS

- Line level or mic level input with phantom power.

- Output peak limiter positively prevents system overload.

- Speech Curve filters help prevent system feedback.

- Target Level control makes setup simple & quick.

- Peak Limiter prevents sound system overload

or tape distortion.

- Parallel input/output LED meters show display

gain status.

6

- Separate inputs for page mic, house feed, music.

- Page over music control (ducking).

- For stereo applications links to optional 571S SPL Slave.

POWEROUTPUT

ACTIVEACTIVE

CLIP

IN

BYPASS

CONNECT

BYPASS

STEREO

MONO

IN

BYPASS

AUTOMATIC

MANUALATTACK/RELEASE

LIMITERCOMPRESSOR/PEAK-RMS501

PEAK LIMITER

GAIN REDUCTION (dB)

+65.5+8+2

-124 3 212 10 8 6

+12

25 20 15

-12

-10+20-10 +20

THRESHOLD (dBM) OUTPUT GAIN (dB)

+14-4

RMS COMPRESSOR/LIMITER

5.5 SLAVESTEREO

1212 2.2

301.5

60.4

-10-20

3

∞1.4300 5.25

RATIO (X:1)ATTACK (dB/mSEC) RELEASE (dB/SEC)

-40 +10

THRESHOLD (dBm)

12

0-30

SIDECHAIN

Microprocessor based gain controller maximizes intelligibility by

automatically changing sound system gain in response to ambient

noise changes. A microphone (not supplied) is used to sense noise

level changes. Thousands installed in factories, transportation

terminals, sports arenas, casinos, museums, restaurants, and

night clubs.

Microprocessor based gain controller maximizes intelligibility by

automatically changing sound system gain in response to ambient

noise level changes. Uses existing system speaker(s) to sense noise

changes. Thousands installed in factories, transportation terminals,

sports arenas, casinos, restaurants, and museums.

- ⁄A mono comp/limiter for installed sound, recording or live

performance. A ‘legendary’ choice for bass players and club sound

engineers looking for fat, full sounds while protecting amps and

speakers from peak audio spikes. Rock solid construction for years

of reliable use.

- Separate inputs for page mic, house feed, music.

- Page over music control (ducking).

- For stereo applications links to optional 571S SPL Slave.

CALIBRATE

SENSE INPUTERRORINPUT ERROR

SPL COMPUTER571

POWER

10

15

MAX200

MODE

-10

-5

0

-15

-2030 4020159 26

GAIN (dB)

MIN

LEVEL SET (dB)

5

+5

52

+10

TUP

-5

TUO:ESNERATIO (dB)

1:1

-101:22:1

0GAIN TRIM (dBr)

OUTPUT

BYPASS

S7

MUSIC (dB)PAGE OVER

140

TIME

32

1.5

AVERAGING

4

5

MIN

1.2

60

30

SEC

SENSE SENSE1 2

PAGEMIC

PAGE/MUSIC

OPTIONS

NORMBYPASS

LOWHIGH

SAMPLEINTERVAL (MIN)

0 14

PAGE OVERMUSIC (dB)

2:1 1:2

S TT POUE:ENSRATIO (dB)

UGAIN (dB)

BYPASS

40309 15 20 262 5

PAGE/MUSICINPUT ERROR

10

15

200

MAX

MODE

-10

-5

0

-15

-20

MIN

5

LEVEL SET (dB)

CALIBRATE

SPL COMPUTER572 A B C D

1 2 3 4

PAGEMIC

GAIN

BYPASS SENSEGAIN

SENSE MUSIC/PAGE

5

10 15

20

1 26


7

- RMS and Peak response, auto and manual attack

and release.

- Balanced and unbalanced connectors, stereo linkable.

- Peak limiter catches fastest transients with

2000 dB/millisecond attack.

An evolution of Symetrix studio voice processing design to

meet the demands of engineered sound systems. Features high

gain mic preamp with phantom power, high and low cut filters,

compressor/limiter, downward expander, and three-band

parametric EQ. Compressor and EQ maximize intelligibility

while downward expander and high/low cut filters keep

feedback in check.

-1 -2 -3 -6 -9 -12

MASTER

HIGHMIDLOW

PARAMETRIC EQ

SAVELOAD

NUMBERPRESET

HEADROOM (dB)

LEVELOUTPUT

(dB)(Oct)CUT/BOOST

(kHz)FREQUENCY BANDWIDTH

4(680-20kHz)(20-500Hz) (160-6300Hz) ACTIVE 2028 24 1216 8 CLIP

COMPRESSOREXPANDER/GATEDE-ESSER

MIC

PRE-AMP

(Sec)RELEASE

(dBFS)THRESHOLD

(X:1)RATIORELEASE

(Sec)RATIO(X:1)

THRESHOLD(dBFS)(kHz)

FREQUENCY

75

-15dB PADNORM

15

GAIN(dB)

628DIGITAL VOICEPROCESSOR

(dBFS)THRESHOLD

PHANTOMCLIP ACTIVE -12 -18 -15 -6 -9 -3 ACTIVE -3 -9 -12 -6 -1 -2 ACTIVELINE

+20-12

A programmable digital processor for voice work in broadcast and

recording. Features high gain direct coupled mic preamp with

phantom power, compressor/limiter, expander/gate, de-esser, and

parametric EQ. Create custom processing programs tailored for the

unique sound of each voice talent, and store the results in the 128

user presets.

- Microphone and line level inputs, 20 bit A/D & D/A.

- AES/EBU & S/PDIF digital output, analog line out.

- MIDI in/out. Optional remote preset controller is available.

+15

POWER

0

dB

-15

1.5

OCT

HIGH EQ

.3 4

BANDWIDTH CUT/BOOSTHz6.8K

FREQUENCY

22K680

0

dB

+15

1.5

OCT

4.36.3K

BANDWIDTHMID EQ

-15

CUT/BOOST

160

0

(dB)

-15 +15

CUT/BOOST

1.5

(OCT)

LOW EQ

4.3

(Hz)160

FREQUENCY

50016

BANDWIDTHHz2.5K

FREQUENCY

18K

9K

32K

4K5

50

FILTERS

3K260

115

HI CUT (Hz)

22

6

8

GAIN

0

+15

FILTERSEQ/

EXP/COMP

INBYPASS

BYPASS

LO CUT (Hz)

0

CLIP

-15 -20

-10

10

RATIO

2

X:1

1

-10

6

3

-40 12

9

0

BYPASS

GR

+20

THRESHOLD

COMPRESSOR OUTPUT

6

3GR

20

12

LINE

INPUT

MIC60

MUTE

MIX(dB)

CLIP

20

E

MIC GAIN

VOICE527

PROCESSOR-25

THRESHOLD

EXPANDER

- Microphone and line level I/O via Euroblock and

XLR connectors for easy interface with any audio system.

- Mic muting port for “cough switch” control.

- Mic/Line Input Mix control accommodates local and

global announce sources.

8

PROCESSORVOICE528

NORM-15 PAD

dBOCTHzdBOCTHzOCTHz dB

POWER

COMPRESSOR (-dB)

3916 12 620

MID EQ

VOICESYMMETRY

IN

OUT

OUTPUT LEVEL (VU)

GAIN (dB)OUT

INCUT/BOOSTBANDWIDTHFREQUENCYCUT/BOOSTBANDWIDTHFREQUENCYCUT/BOOSTBANDWIDTHFREQUENCY

LOW EQ HIGH EQ

COMP RATIOCOMP THRESEXP THRES IN

OUT

DOWNWARD EXPANDER (-dB)

THRESHOLDFREQUENCYOUT

IN

PHANTOMLINEMIC

MIC GAIN(dB)

MIC PRE-AMP

0 3 CLIP

0

-15 -20 -10 -6 -3

-15 +15

01.56.8K01.52.5K0

+15 -15 4.322K6804 -15 .3160+15 6.3K +15

EQ

1.51602

6 3

-10 -25

1620 12

-15

12 9 6 4 2 9

4500 .3

EXP/COMP

16101+20 0 -40

DE-ESS

BYPASS0

3K

CLIP 15

8K60 80020

DE-ESS (-dB)

-30 -15

Our industry-leading analog multi processor for voice work in

recording, broadcast and sound reinforcement. Create an

audience pleasing, articulated sound using high gain mic

preamp with phantom power, comp/limiter, expander/gate,

de-esser, and parametric EQ.

- Microphone & line level inputs, line or mic level output.

- Voice symmetry feature corrects excessive positive

or negative signal peaks.

- Minimum components in signal path, resulting in

very low noise, natural sound.

A high performance one input, two output digital delay for acoustical

alignment of distant speaker systems in installed and touring sound

systems. Also used for resynchronization of audio to video in

broadcast and video post production applications. User interface

is simple and intuitive.

- Each output delayed up to 885 milliseconds

in 1 ms. increments.

- 20 bit delta sigma A/D & D/A converters.

- Delay adjustable in milliseconds, meters, feet, or frames.

DELAY SETTINGSOUTPUTS

DUAL OUTPUTDELAY

402

INPUT

DELAYINCREASEDECREASE

DELAYFEETMsec

FRAMESDISPLAY UNITSDELAY

DELAY 1

SELECT

METERSDELAY 2

DELAY 2LEVEL

DELAY 1LEVEL

CLIP-1 -2 -12 -6 -3

INPUTLEVEL

SYSTEMSTATUS

-18 -24 -36 -30 -48 -42

INBYPASS HEADROOM

606

GLOBAL

MODULATION OUTPUT LEVEL

DELAY LINE 2DELAY LINE 1

RATE

TIMEMIX

RATE

FEEDBACKTIME MODULATION FEEDBACK

PROGRAMMING

SELECTMODE

MIDI

DUAL

CLOCK

COUPLED

MONO

PRESET LOAD SAVE

INPUT

CH2CH1

-18dB

-6dB

CLIP

LEVEL

MAXMINSIGNAL

DELAY F/xMACHINE

MIX

ROOM SIZE

MIDI CLK SYNC

PARAM SELECT

PARAM ADJUSTFILTER Q

OSCILLATOR RATE

FILTER FREQ.

DIFFUSION 1 MODEL

DIFFUSION AMOUNT

MOD DESTINATION

FILTER Q

MOD SOURCE

MIDI CLK SYNC

MOD LEVEL DIFFUSION 2 MODEL

DIFFUSION AMOUNTFILTER FREQ.

MOD SELECT

⁄ Unique and powerful delay effects processor for recording and live

performance. Two separate delays for stereo, dual mono or series

mode processing. True stereo chorusing, flanging, echo, filtering,

diffusion, phase shifting, room simulation, widening, doubling and

fattening. Use on voice, instrument or special effects tracks.

- Rotary control knobs, 20-bit converters, internal

power supply.

- Maximum delay 2.6 seconds (each channel),

resolution down to 1 millisecond.

- Six independent modulation sources, MIDI

& tap tempo control.

INACTIVE ACTIVE

BYPASSOPERATE

AUDIO DELAYBROADCAST

016

DELAY TIME (SECONDS)COUGH DUMP PROFANITY

7.576.55.554.53.5 42.5 321.51.50 6

START DELAYEXIT DELAYINPUT HEADROOM (dB)STATUS

036912151824 2130 27DELAYDELAY

33

Delays stereo audio program by 3.5 or 7.5 seconds to prevent the

broadcast of unwanted profanities or comments from telephone

callers. Dump profanity button instantly erases unwanted caller

audio. Cough button digitally edits unwanted studio audio.

- Simple, foolproof controls. Easy to operate.

- Automatic relay bypass when not in use.

- Stereo, 14 kHz bandwidth. All functions may

be remotely controlled.

9


Mixes mics and mono/stereo line inputs and assigns them to

a mono output, a stereo output or both. Ideal for multi-zone

paging in restaurants, bars, conference rooms, and public facilities.

Priority feature lets selected inputs mute or duck other inputs

assigned to the same zone.

- Two mono mic/line inputs with +48 volt

phantom power; four stereo inputs.

- Mic inputs have 20dB pads to prevent overload

& low cut filters to reduce popping.

- Outputs have adjustable ‘ducking’ or muting

& remote volume control inputs.

Stereo controller for installations that combine voice paging with

foreground or background audio. Ideal for high performance sound

systems in restaurants, bars, conference rooms and public facilities.

Transformer-isolated Music-on-Hold output feeds the music-

on-hold input of a telephone system.

- Bass and Treble tone controls.

- One mic/line input for paging sources; three switch-selectable

line inputs for CD, radio, tape or TV audio sources.

- Optional remote control selects line input source

and adjusts master output volume.

10

LEVEL

OUTPUT

MUSIC ONTREBLE (dB)

REMOTE

POWER

CLIP

OFFOFF MAX MAX

MONOSTEREO

0

-6 +6

+12 -12

ACTIVE

8KHz HOLDBASS (dB)TRIM 3 (dB)TRIM 2 (dB)TRIM 1 (dB)RANGE (dB)

DUCKER

PGM SELECT

PROGRAM INPUTS

MIX

PAGE INPUT

0

+6 -6

+12 -12

0

+6 -6

0

+6 -6

+12 -12 +12 -12

0

+6

2 3

-6

-12 +12

1

-15 -30

0-60 LINEMIC

440

AUDIO CONTROLLERFOREGROUND

DUCK

100Hz

TONE

OVERRIDEPRIORITY

ZONE 2 OUT (STEREO)ZONE 1 OUT (MONO)LINE IN 9-10LINE IN 7-8LINE IN 5-6LINE IN 3-4 (PRIORITY 3)MIC/LINE IN 2 (PRIORITY 2)MIC/LINE IN 1 (PRIORITY 1)

450DUAL ZONEPRIORITY MIXER

UUUUUUUU

+15dB+15dB+15dB+15dB+15dB+15dB+15dB+15dB ∞∞LOW BYPASS

MASTERMASTER

+15

0

-30

-15

+15

0

-15

-30

ZONE ASSIGNZONE ASSIGNZONE ASSIGNZONE ASSIGN

∞

GAIN

∞

GAIN

∞

GAIN

∞

GAIN

∞

GAINZONE ASSIGN

∞POWER

PRIORITYOVERRIDE

BYPASSLOW

ZONE 1

ZONE 2

ZONE 1

ZONE 2

ZONE 1

ZONE 2

ZONE 1

ZONE 2

ZONE 1

HIGH PASSZONE 2

RL

GAIN

HIGH PASSZONE 2

ZONE ASSIGN

ZONE 1

OUTPUT 4C OUTPUT 4D

POWER

CHANNEL 3

CLIP

OUTPUT 4A

+10

0

INPUT 4OUTPUT 3D

-10

OUTPUT 3B

CLIP

INPUT 3

+10

0

OUTPUT 3A

-10

OUTPUT 3C

CHANNEL 4

OUTPUT 4B

CHANNEL 2

OUTPUT 2DOUTPUT 2COUTPUT 2BOUTPUT 2A

0

INPUT 2OUTPUT 1C OUTPUT 1D

-10

+10

CLIPCLIP

OUTPUT 1A

+10

0

EINPUT 1

-10

581

AMPLIFIER (4x4)DISTRIBUTION

CHANNEL 1

OUTPUT 1B

POWERMONITORMODECHANNEL 2CHANNEL 1

420AMPLIFIERSTEREO POWER

MUTED

SPEAKER

ACTIVE

STEREO

MONO

STEREO

654

GAIN

8

910

2

10

3 7

HEADPHONESCONTROLS

DUAL TRACKING

GAIN

INDEPENDENT

64

GAIN

5

91100

CLIP2

73

8CLIP

One rack space, 20 watts per channel amp for powering near field

monitors, headphones, or small paging speakers in broadcast and

installed sound applications. Thousands of units in service in

recording studios, video suites, remote trucks, and radio control

and production rooms.

⁽⁾A four input, sixteen output distribution amplifier. Each 1 input/

4 output module operates independently. Simple rewiring creates

2x8 and 1x16 configurations. Internal power supply via toroidal

transformer results in a very low noise, high performance product.

- Euro-style detachable terminal blocks for

quick rack installation.

- Precision circuitry yields THD+Noise less than .009%.

- Four LED input level meters, individual trim pots for

input and output volume attenuation.

- 20 watts/channel into 8 ohms, 20 watts

mono bridged mode.

- Front panel headphone jack & speaker mute switch.

- Low transformer field emissions allow mounting

next to video monitors.

11


+7.5

PWR

0

-7.5

-3dB

GR

-6dB

-12dB CLIP

-15 -18dB

4

RATIO (X:1)

82 Sec 2.5

104 Sec BYPASS +15

GAIN (dB)

OUTPUT

.25 Sec70mS

AUTOMATICMANUAL

ATTACK/RELEASEAUTOMATIC

50mS

50mS

ATTACK-10

+5 25mS

+20 500uS 100mS

-25301LOW DISTORTIONCOMP/LIMITER

THRESHOLD (dBu)

-40

COMPRESSOR/LIMITER

RELEASE.5 Sec

PWR

OFFON

POLARITY

0°180°

15dB PAD

OUTIN

40

GAIN (dB)

60

MICROPHONE 2 PHANTOM POWER

CLIP

0°180°

POLARITYIN

40

GAIN (dB)

20 60

OUT

15dB PAD

302DUAL MICROPHONEPREAMPLIFIER CLIP

MICROPHONE 1

20

PWR

(BI-DIRECTIONAL)INTERFACE AMP303

⁄A mono comp/limiter that delivers extremely clean compression

for installed sound and broadcast applications. Unique circuitry

eliminates secondary causes of distortion during compression,

allowing use of shorter release times. PY-3 accessory Y power cord

permits two 301’s to share a single power supply.

⁽-⁾A stereo level matching amplifier that accepts balanced or unbalanced

inputs and converts them to balanced or unbalanced outputs. Use the

303 to interface a consumer DAT, cassette recorder or computer sound

card to a professional recording console or to other +4dBu nominal

level equipment.

Designed for broadcast, sound reinforcement, and digital and analog

recording. Offering substantial sonic improvements over stock mixers

or console preamps, the 302 has solid stereo imaging, excellent

transient response, very low noise, and almost undetectable distortion.

- - 12

- Automatic Attack/Release button for quick preset setup.

- 115dB Dynamic Range. Ultra-low THD+Noise of less than .008%

at any gain reduction level.

- XLR and Euroblock input & output connections.

- Polarity reversal switches and 15dB pads on both channels.

- +48 volt phantom power.

- Gain variable from 20-60dB, works with virtually any

professional microphone.

- Simple, affordable conversion of consumer audio to pro audio

without loss of information.

- Stereo XLR and RCA input and output jacks.

- External power supply ensures low noise operation.

LEVEL 4

10

PWR

LEVEL 3

100100100

LEVEL 1 LEVEL 2

0

HEADPHONE LEVEL

OUTPUT 3

MODE

MONOSTEREO

OUTPUT 1 OUTPUT 2

LEVEL+12

+25∞HEADPHONEAMPLIFIER

304

INPUT HEADPHONE OUT

OUTPUT 4

PWR

DCB

OUTPUTS

A

INPUT

0

+10

-10

CLIP305

AMPLIFIER (1x4)DISTRIBUTION

CHANNEL 2

GROUNDGROUND

CHANNEL 2CHANNEL 1

GROUND

CHANNEL 1

GROUND

CONNECTLIFT

CONNECTLIFT307

DUAL ISOLATIONTRANSFORMERDUAL ISOLATIONTRANSFORMER

307

⁽⁾A one input/four output mono distribution amplifier. Use the 305

to route your most critical audio to four separate outputs. Sound

contractors will find the 305 essential for feeding multiple power

amps. Broadcast engineers can easily and inexpensively distribute

satellite audio around their station with the 305.

Stereo in, four output amp drives headphones of any impedance. Used

in broadcast, installed sound, and recording applications. High voltage

technology provides 6dB volume increase over most competing units.

Compact half rack chassis permits 8 channels in one rack space.

OUTPUT

PWR

0

GAIN (dB)

-20

CLIP

PROGRAMPAGE

RELEASE2 Sec

.5 Sec 4 Sec

MIX

+20

DUCKER

HOLD2 Sec

4 SecBYPASS .25 Sec-600

-20

-40

THRESHOLD (dBv) DEPTH (dB)-30

PREAMP/DUCKER

306

DUCK

A two input/two output isolation box for use in installed sound and

broadcast audio systems. Isolates ground, positive and negative

audio paths to break up ground loops and improve overall system

performance. Interfaces balanced and unbalanced devices. Increases

resistance to RF interference.

⁄ A streamlined paging/foreground music front-end with comprehensive

ducking controls. Separate Threshold, Depth, Hold and Release

adjustments allow precise ducking control of program material in the

presence of a page. Mix control varies the proportion of paging and

program feeding the outputs.

13

- -


- Individual volume controls for each output, master input volume.

- Stereo or mono operation, balanced or unbalanced input.

- Pass Thru jacks permit daisy-chaining of multiple units.

- Euroblock terminal connectors for quick installation.

- Precision circuitry yields THD+Noise less than .009%.

- Four-segment LED input level meter. Individual trim

pots for input and output volume attenuation.

- Euroblock terminal connectors for quick installation.

- Two high-performance audio transformers.

- Flexible grounding options.

- XLR Mic/Line input for paging systems with switchable

phantom power for condenser mics.

- Stereo RCA Line input for foreground music and

program sources.

- Output gain adjustable over a +/-20dB range.

Symetrix professional audio

products are distributed

worldwide. Please contact

our corporate headquarters

for the name of the Symetrix

distributor in your country.

Corporate Headquarters

Symetrix, Inc.

14926 35th Avenue West

Lynnwood, WA 98037 USA

☎ (425) 787-3222

Fax (425) 787-3211

www.symetrixaudio.com

Asian & South American

Representation

International Sales

3233 Lucinda Street

San Diego, CA 92106

☎ (619) 224-9429

Fax (619) 224-9439

European Representation

World Marketing Associates

PO Box 100

St. Austell, Cornwall

England PL26 6YU

☎ +44(0)1726 844440/1

Fax +44(0)1726 844443

Canadian Distribution

SF Marketing

6161 Cypihot

St-Laurent, Quebec

Canada H4S 1R3

☎ (514) 856-1919

Fax (514) 856-1920

Note:

In keeping with our policy of continuous innovation and improvement, Symetrix reserves the right to alter specifications without further notice.

All Symetrix products are designed, developed and manufactured in the USA. © Symetrix, Inc. 1999. Printed in USA.

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