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628

3

Product Tour and Operations Guide

Chapter 3

This chapter provides an overview of the connectors and controls on the 628.   We’ll explain the

operation of each as we go along.  Please read through this chapter completely first and then refer

to it when necessary as you make connections to the 628 and begin operating the unit.

Now that you’ve ripped open the box ...

Start by mounting the 628 in your equipment rack with #10-32 screws (not provided).  Use plastic or

nylon washers (also not provided) to minimize markings to the front panel.  The 628 requires no

special ventilation; just don’t mount it directly over heat generating devices (such as your 200 watt

per channel power amp or your pizza oven).  We’ll start around back.

LISTED

813 COMMERCIAL

AUDIO EQUIP. 2T38

628

PROCESSOR

DIGITAL VOICE

MANUFACTURED IN LYNNWOOD, WA, USA

15 WATTS

AC INPUT

MAXIMUM

FABRIQUÉ AUX E.-U. PAR SYMETRIX INC., LYNNWOOD, WASHINGTON.

RÉFÉREZ TOUTE RÉPARATION À UN TECHNICIEN QUALIFIÉ.

C

Plug the EIN power cord supplied with the 628 into the mains connector on the rear of the unit.

While you’re there, verify that the voltage specification on the 628 matches your local mains

voltage.  Look for the voltage specification on the adhesive tag to the right of the power

connector.  Check that the plug matches your mains receptacle.

Warning:

If the voltage specified does not match your local mains voltage, or if

the plug on the power cord is not correct for your mains receptacle, STOP! Call the

Symetrix dealer (or your country’s distributor) who supplied your unit and trade the

628 for a unit built for your mains voltage.

If everything looks consistent, you may plug the 628 into a mains receptacle.   Please verify that

the plug fits all the way into the receptacle so that none of the blades are exposed.  Once con-

nected to mains power, the 628 will power up.  There is no ON/OFF power switch on the 628.

Warning:

The 628 is intended to be electrically grounded.  It is supplied with a

three-wire grounding plug which has a grounding pin.  This plug will fit only a

grounded AC outlet.  This is a safety feature.  If you are unable to insert the plug into

the outlet, contact a licensed electrician to replace the outlet with a properly

grounded outlet.  Do not defeat the purpose of the grounding plug with an adapter.

PHANTOM

INPUT

ON
OFF

MICROPHONE

POWER

LINE

Connecting with your microphone ...

Next connect your microphone cable

to the 3 pin, female XLR connector on

the far right side of the rear panel, as

viewed from the rear of the 628.  The

628 wants to see an output from a

balanced, low-impedance professional

microphone.  If the connector on your

microphone connector does not

match the MICROPHONE INPUT

connector of the 628 have a qualified

technician replace the cable connector with a 3 pin, male XLR connector.

Caution:

Large transients (loud “pops” and “whoomphs”) may be induced when  plugging and

unplugging the microphone connector.  Transients also occur when you connect power to

the 628.  If you have connected the output of the 628 to a console input or other audio

Содержание 628 Digital Voice Processor

Страница 1: ...628 Digital Voice Processor User s Guide 628...

Страница 2: ...B June 30 1998 Symetrix part number 53628 0B00 Subject to change at our whim and fancy without notice 1998 Symetrix Inc All right reserved Symetrix is a registered trademark of Symetrix Inc Mention o...

Страница 3: ...frequencysections The equalizer bands and controls remain the same as onthe528E exceptyounowreadFREQUENCY BANDWIDTHandCUTorBOOSTonthenumeric display TheOUTPUTLEVELpottweakstheoutputgain andtheLEDheadr...

Страница 4: ...on the 628 s chassis Boldface Strong emphasis Power source Electrical power requirements for US and Canadian models are 117 VAC Nominal 105 to 125 VAC 60 Hz 20 Watts maximum UL and C UL listing appli...

Страница 5: ...plugonthepowercordisnotcorrectforyourmainsreceptacle STOP Callthe Symetrixdealer oryourcountry sdistributor whosuppliedyourunitandtradethe 628foraunitbuiltforyourmainsvoltage If everything looks consi...

Страница 6: ...sleeve plug into the TRS tip ring sleeve input jack Use the GAIN control to adjust the line level input signal Caution The 628 accepts analog inputs only There is no provision for a digital input sign...

Страница 7: ...equipment there is no 0 dBm reference point A signal passing through the 628 at a level of 4 dBfs dB full scale is 4 dB below clipping NOT at 4dBu The 628 clips at 22 dBu This means that the 4 dBfs s...

Страница 8: ...l world things aren t always this neat Some consoles only allow microphone level 50 dBu inputs for the channels providing microphone functions such as speaker muting or on air light switching Please c...

Страница 9: ...should display 1 indicating that the command from he RC 1 was received and preset 1 was loaded The LEDs on the RC 1 do not provided positive confirmation of which preset is selected on the 628 They si...

Страница 10: ...tton the MASTER display will show the flashing letters Sto Store Push the SAVE button again and the 628 will copy the selected preset program to the new location Until you press the SAVE button the se...

Страница 11: ...sample rates When the center frequency which you want to cut or boost displays in the window stop turning the FREQUENCY knob The display will flash indicating that you have made a change in fre quenc...

Страница 12: ...urning the knob further will change the cut or boost and the new value will show in the LCD display Push the SAVE button once and the MASTER display will show the flashing letters Sto Store Push the S...

Страница 13: ...isplay Save the change by pressing the SAVE button The MASTER display will show the flashing letters Sto Store Push the SAVE button again and the 628 will record the change to the preset program This...

Страница 14: ...f a higher ratio 10 1 is used a 1 dBu drop in the input signal will result in a 10 dBu drop at the 628 s output This resembles the function of a gate which turns off the signal when it falls below the...

Страница 15: ...resets you can disable the 628 s front panel controls After you lock out the front panel controls the announcers can switch between presets but when they turn other knobs the 628 ignores them Front Pa...

Страница 16: ...the dynamic range of signals below a threshold Limiters can be thought of as very high ratio compressors and gates can be thought of as very high ratio expanders In addition to their roles as remedial...

Страница 17: ...or limiter we could increase the amount of change at the lower end of the dynamic range with a downward expander or gate In practice we throw away some of the low level audio down near the noise floor...

Страница 18: ...u want to stop Release timing is best expressed as decibels of compression per second A release time of 10 dB Sec allows the compressor to release compression at a rate of 10 decibels every second The...

Страница 19: ...se it operates dynamically a de esser removes only sounds that are disproportionately loud and only those falling within the selected control range De essers include knobs that allow the operator to c...

Страница 20: ...oo low using the equalizer for boost may increase noise to unacceptable levels If your source signal levels are too low increase the preamp gain if you use the microphone input You may need to raise t...

Страница 21: ...ncy Description 75 200Hz Rumble fullness 200 300Hz Bass bigness 400 600Hz Chesty warmth 600 1000Hz Volume 2 4kHz Clarity 3 5kHz Nasal yell presence 5 8kHz Enunciation intimacy 10kHzup Air mouth noises...

Страница 22: ...tch in the proper position It must reflect the sample rate of the digital recorder workstation etc 8 Do you have the digital output of the 628 connected to a digital input Hum or buzz in the audio 1 V...

Страница 23: ...trying to modify one of the factory presets Presets 120 127 are read only you must move the program to another location before you can modify it Check Chapter 3 for instruction on moving presets to ne...

Страница 24: ...The DSP is not responding to the host E22 DSP host vector error The DSP is not answering a host command vector BAT Your memory backup battery is failing Oh T Skiptothere initializationprocedurebelow...

Страница 25: ...Express We will return your repair using premium freight at no additional charge If you return you unit by parcel post or UPS surface please don t ask us to return it to you via overnight or second d...

Страница 26: ...e or merchantability Symetrix s warranty obligation and buyer s remedies hereunder are SOLELY and exclusively as stated herein This Symetrix product is designed and manufactured for use in professiona...

Страница 27: ...Bands 20 Hz to 500 Hz 160 Hz to 6300 Hz 680 Hz to 20 kHz Bandwidth Range 3 to 4 Octaves Maximum Cut Boost 15 dB Analog Output Type Balanced Transformerless Output Level at 0dBFS 22 dBu Balanced Jumper...

Страница 28: ...ntrol operating through the range of 1 1 to 15 1 A front panel threshold control shall have a range of 0 dBFS to 60 dBFS The compressor release time shall be adjustable in the range from 250 milliseco...

Страница 29: ...e settings also work well for AM talk show hosts Preset126 SusieSweetheart On The Airhereoften Features light expander operation medium processing in the compressor The EQ is set for a bass boost and...

Страница 30: ...id Band Mid Band High Band High Band Frequency Frequency Threshold Threshold Threshold Threshold Frequency Frequency Frequency Frequency Frequency Frequency Threshold Threshold Ratio Ratio Ratio Ratio...

Страница 31: ...d the chassis XLR connectors find black pin jumpers J6 and J7 or J10 and J11 depending on which XLR output you want to convert to microphone level 5 Move both jumpers next to the output connector whic...

Страница 32: ...U11 C31 C25 D1 C32 R41 BP14 C35 BP18 R43 J10 J9 J7 J5 J4 J12 G 1 3 2 G 1 3 2 J11 J13 U24 D3 C66 C61 L14 R82 R81 C65 R83 C64 R79 BP28 R85 C63 R78 R70 J8 R77 R71 U19 R68 C58 L10 C39 L9 J6 C50 R59 R60 R...

Страница 33: ...ture provided on the RC 1 If you accidentally hit one of the buttons you will accidentally change the processing preset on the 628 The RC 1 connects to the Symetrix 628 with a 25 foot 7 pin DIN cable...

Страница 34: ...628 in its permanent position you may connect the RC 1 Position the RC 1 Remote Control in a convenient but secure location Route the 25 foot cable between the two devices Secure the cable so that it...

Страница 35: ...to pin 2 etc Symetrix does not offer extension cables or cables of different lengths Troubleshooting The LEDs on the RC 1 do not light after a button is pushed 1 The RC 1 is not receiving power Are th...

Страница 36: ...PLUG TIP HIGH RING LOW SLEEVE GROUND MALE TRS PLUG TIP HIGH RING NOT USED SLEEVE GROUND LOW MALE TS PLUG TIP HIGH SLEEVE GROUND LOW MALE RCA PLUG TIP HIGH SLEEVE GROUND LOW MALE TS PLUG TIP HIGH SLEE...

Страница 37: ...ssion standard Part 1 Residential commercial and light industry EN 50082 1 Electromagnetic compatibility Generic immunity standard Part 1 Residential commercial and light industry EN 55022 Limits and...

Страница 38: ...628 36 Symetrix Inc 14926 35th Ave West Lynnwood WA 98037 2303 USA Tel 425 787 3222 Fax 425 787 3211 Website http www symetrixaudio com Email symetrix symetrixaudio com...

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