Symetrix 562E Скачать руководство пользователя страница 18

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562E

false triggering by the hi-hat.

With the O

UTPUT

SSIGN

switch still in the G

ATE

. position, have the drummer play the snare

again, but this time with kick drum accompaniment. If the kick drum is falsely triggering the snare
gate, rotate the L

control towards the clockwise position until the kick drum no longer

triggers the gate.

Gated Reverb

You knew this was coming, didn’t you?

The obvious method to gate reverb is to feed the reverb to the input of the 562E, and to use the
internal triggering. However, if you use a H

OLD

IME

setting that is too short, you can run into

jitter problems when the reverb signal starts to decay.

To avoid this, and still be able to use a short H

OLD

IME

setting, feed a separate send of only the

dry signal to the K

of the 562E. Set the E

. K

YPASS

switch to the E

position.

Feed the reverb to the audio input of the 562E. This will give the gate a trigger with a well-defined
beginning and end.

Be sure to experiment with the W

INDOW

DVANCE

feature, especially on instrument sounds with a

sharp attack, such as drums.

Set the other controls as shown in the following illustration.

Noise Reduction and Feedback Control In Vocal Monitors

Here is one of the golden uses of the 562E - increasing gain before feedback and cleaning up the
audio in stage monitor systems. This use of the 562E requires some fine tuning of the T

HRESHOLD

and H

IGH

controls, but it can make a huge contribution towards ease of life for the

monitor mixing engineer.

First, set up the 562E, using the downward expander, with a fairly fast release time. The threshold
should be set to trigger on normal level speech.

Set the O

UTPUT

SSIGN

switch to K

ISTEN

W/F

ILTER

. If the stage setup does not include a drum

kit, you can skip the next step.

If the stage setup includes a drum kit, start turning the H

IGH

control from fully clockwise

toward counterclockwise until you have eliminated as much of the sound of the cymbals as
possible, without detracting from the vocals.

If you wish, apply some rolloff to the lows using the L

control. This will help prevent the

downward expander from triggering if the singer likes to rock the mic stand.

CHANNEL 1

TIME

GATE RANGE

EXPANDER RATIO

500ms

HOLD

TIME

ATTACK

TIME

60ms

1 Sec

RELEASE

1:3

2.5 Sec

80dB

4 Sec

300ms

50ms

30ms

(dB)

THRESHOLD

ABOVE

BELOW

HIGH CUT

WINDOW

MAX

20K

ADVANCE

REDUCTI0N

GAIN (dB)

-40

+20

OFF

40K

400Hz

MIN

AUTO

LOW CUT

OUTPUT

200Hz

15Hz

ASSIGN

20Hz

50Hz

EXT.KEY

KEY LISTEN

10Hz

GATE/EXP.

BYPASS

W/FILTER

CH1 SIDECHAIN PROCESSING

CHANNEL 1

TIME

GATE RANGE

EXPANDER RATIO

500ms

HOLD

TIME

ATTACK

TIME

60ms

1 Sec

RELEASE

1:3

2.5 Sec

80dB

4 Sec

300ms

50ms

30ms

(dB)

THRESHOLD

ABOVE

BELOW

HIGH CUT

WINDOW

MAX

20K

ADVANCE

REDUCTI0N

GAIN (dB)

-40

+20

OFF

40K

400Hz

MIN

AUTO

LOW CUT

OUTPUT

200Hz

15Hz

ASSIGN

20Hz

50Hz

EXT.KEY

KEY LISTEN

10Hz

GATE/EXP.

BYPASS

W/FILTER

CH1 SIDECHAIN PROCESSING

Содержание 562E

Страница 1: ...562E Windowing Expander Gate User s Guide 562E ...

Страница 2: ...notice 1997 Symetrix Inc All right reserved Symetrix is a registered trademark of Symetrix Inc Mention of third party products is for informational purposes only and constitutes neither an endorsement nor a recommendation Symetrix assumes no responsibility with regard to the performance or use of these products Under copyright laws no part of this manual may be reproduced or transmitted in any for...

Страница 3: ...audio waveform This reduces trigger uncertainty jitters and attack distortion AutoWindowingyieldsanenvelope that is consistent and natural sounding It also increases envelope consistency by eliminating the artificial drop off that occurs in most gates at the end of the release cycle In the 562E the signal smoothly and continuously decreases at the end of the release cycle creating a much more plea...

Страница 4: ...62E or other equipment in your system Warning Identifiesinformationthat if ignored maybehazardousto yourhealthorthatofothers CAPITALS Controls switches or other markings on the 562E s chassis Boldface Strong emphasis Power source This product is intended to operate from a power source that does not apply more than 255Vrms between the power supply conductors or between either power supply conductor...

Страница 5: ... serviceable parts inside the chassis Refer all service to qualified servicepersonnelortothefactory Make your initial switch and control settings as follows SWITCH SETTING EXT KEY BYPASS IN IN KEY LISTEN W FILTER GATE EXP GATE EXP LOW CUT CCW 10Hz HIGH CUT CW 40K WINDOW ADVANCE MAX THRESHOLD 10 ATTACK TIME AUTO HOLD TIME GATE ONLY 50ms RELEASE TIME 300ms GATE RANGE IF GATING 80dB EXPANDER RATIO IF...

Страница 6: ...ocessed by the LOW CUT and HIGH CUT filters This is helpful in fine tuning the effect of the LOW CUT and HIGH CUT filters on the key sidechain audio The GATE EXP switch position routes the gated expanded audio to the output of the 562E The GATE EXP switch position is the normal operating position for the 562E LOW CUT control Adjusts the cutoff frequency 3dB down point of a high pass filter that is...

Страница 7: ...e output signal When this control is set to twelve o clock you will not have any expander or gate action because the twelve o clock position corresponds to 0dB change for gating and to a 1 1 ratio change in input equals change in output for expansion ATTACK TIME control Determines the speed at which the expander gate reaches zero attenuation when the input signal rises above threshold The AUTO ATT...

Страница 8: ...essing device The wiring diagram for the KEY INPUT connector is repro duced on the back panel of the 562E Note Remember to set the front panel EXT KEY BYPASS IN switch to the EXT KEY position when using the KEY INPUT BALANCED UNBALANCED OUTPUT 1 4 inch tip ring sleeve TRS phone jack wired tip high ring low and sleeve ground Use this jack when you need a 1 4 inch balanced or unbalanced output The n...

Страница 9: ...ets 5 dB quieter causes a 15 dB decrease at the output In other words a small drop in the input signal level 5 dB occurring below threshold turns into a much larger drop in signal level at the output 15dB A special feature of the 562E s ratio circuitry is that the ratio automatically reverts to 1 1 when the input signal approaches 25dB below threshold For example let s say that you set the THRESHO...

Страница 10: ...elease control of a gate expander allows the user to shape the trailing edge of the sound envelope by manipulating the release time The RELEASE TIME control setting can make the transfer between sound and silence graceful or it can make the transfer abrupt Release time is the length of time required for the gain to recover to the no signal state When you are using the 562E in GATE mode release tim...

Страница 11: ...the 562E more sensitive to high frequencies in the key input signal use an equalizer graphic or parametric inserted in the key signal path after the key signal source and before the 562E to boost the high frequencies in the sidechain signal This increases the sensitivity of the control circuits to those particular frequencies so the expander gate responds more to those frequencies than any others ...

Страница 12: ...ilters on the internal sidechain audio set the EXT KEY BYPASS IN switch to the IN position and the OUTPUT ASSIGN switch to the KEY LISTEN W FILTER position Listening to the EQ d key sidechain signal allows you to hear the signal that will control the 562E and to more easily find the range that you wish to emphasize or de emphasize When you are done listening to the EQ d key sidechain signal return...

Страница 13: ...this does not predispose them to only this usage After all 1 4 inch jacks are sometimes used for loudspeakers which are anything but high impedance Therefore the presence of 3 pin XLR connectors should not be construed to mean that the input or output is low impedance or high impedance The same applies to 1 4 inch jacks So what is really important Signal level and to a much lesser degree the imped...

Страница 14: ...into 600 ohm balanced loads or 18 dBm into 600 ohm unbalanced loads Polarity Convention The 562E inputs and outputs use the international standard polarity convention of pin 2 hot Therefore if your system uses balanced inputs and outputs and uses the 562E this way then the polarity convention is unimportant If your system is both balanced and unbalanced then you must pay attention to this especial...

Страница 15: ...than the balanced output FROM BALANCED OUT TO UNBALANCED IN FROM ELECTRONIC NON TRANSFORMER BALANCED OUTPUT TYPICAL OF SYMETRIX PRODUCTS TO UNBALANCED INPUTS FROM BALANCED OUT FROM UNBALANCED OUT FROM BALANCED OUT FROM BALANCED OUT FEMALE XLR PIN 1 GROUND PIN 2 HIGH PIN 3 LOW MALE XLR PIN 1 GROUND PIN 2 HIGH PIN 3 LOW MALE TS PLUG TIP HIGH SLEEVE GROUND LOW MALE RCA PLUG TIP HIGH SLEEVE GROUND LOW...

Страница 16: ...ry whisper in its vicinity or going into feedback Setup for these applications is easy With no signal and the GATE RANGE EXPANDER RATIO control either clockwise for expanding or counterclockwise for gating adjust the THRESHOLD control counterclockwise until you begin to see gain reduction on the LED display Continue until you hear the degree of expansion gating that you want When the signal is pre...

Страница 17: ...are drum is false triggering This is most often caused by audio leakage into the snare mic from the hi hat and or kick drum The 562E s LOW CUT and HIGH CUT filters are designed to eliminate just such a problem First and foremost employ good mic technique to reject as much of the sound that is causing the false triggering as possible Start with the 562E s LOW CUT knob in the full counterclockwise p...

Страница 18: ...g of the THRESHOLD LOW CUT and HIGH CUT controls but it can make a huge contribution towards ease of life for the monitormixingengineer First set up the 562E using the downward expander with a fairly fast release time The threshold should be set to trigger on normal level speech Set the OUTPUT ASSIGN switch to KEY LISTEN W FILTER If the stage setup does not include a drum kit you can skip the next...

Страница 19: ...EY BYPASS IN switch to EXT KEY set the OUTPUT ASSIGN switch to GATE EXP and set the WINDOW ADVANCE switch to MAX Set the THRESHOLD control counterclockwise set the ATTACK TIME and RELEASE TIME controls to a medium setting set the HOLD TIME counterclockwise and set the GATE RANGE control counterclockwise Begin rotating the THRESHOLD control clockwise until gating occurs Then fine tune the THRESH OL...

Страница 20: ...se downward expansion When using the 562E on the subgroup outputs of the console use gating for the outputs carrying a fast transient signal for example drums or percussion For subgroup outputs dedicated to signal sources with gentler dynamics such as vocals use slower ATTACK TIME RELEASE TIME and HOLD TIME settings when gating or use downward expansion CHANNEL 1 TIME GATE RANGE EXPANDER RATIO 500...

Страница 21: ...el 10 dBu or greater Make sure that the signal you are feeding to the 562E is a line level signal not mic level Check gain settings on downstream equipment The system gain structure should be such that the 562E operates at or near unity gain Is the input signal already noisy No gating or expansion Did you connect the output cable to the KEY IN jack instead of the OUTPUT jack Is the EXT KEY BYPASS ...

Страница 22: ...oise 1kHz Signal Noise Dynamic range Frequency response Attacktime Attenuation Chassis size AC requirements Power consumption 2 XLR and 1 4 TRS 22 dBu 22 dBu 20K Balanced 10K Unbalanced 600 ohms Balanced 03 4 dBu 94 dB 112 dB 0 3dBm 10 Hz to 40 kHz Program Dependent to 300 milliseconds 80 dB max adjustable 1 75 H x 19 W x 4 25 D 117V ac nominal 230V ac nominal 18 watts maximum In the interest of c...

Страница 23: ...e arising out of con nected with or resulting from the manufac ture sale delivery resale repair replace ment or use of any product will not exceed the price allocable to the product or any part thereof which gives rise to the claim In no event will Symetrix be liable for any inciden expresslydisclaimsanyIMPLIEDwarran ties including fitness for a particular purpose or merchantability Symetrix s war...

Страница 24: ...ts Just do these five things and repairs made in warranty will cost you only one way freight charges We ll prepay the return surface freight If you choose to send us your product in some sort of flimsy packaging we ll have to charge you for proper shipping materials If you don t have the factory packaging materials then do yourself a favor by using an oversize carton wrap the unit in a plastic bag...

Страница 25: ...sion 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 methods of measurement of radio interference characteristics of information technology equipment Thetechnicalconstructionfileismaintainedat Symetrix Inc 6408 216th St SW Mountlake Terrace WA 98043 USA ...

Страница 26: ...562E 24 Symetrix Inc 6408 216th St SW Mountlake Terrace WA 98043 USA Tel 425 778 7728 Fax 425 778 7727 Website http www symetrixaudio com Email symetrix symetrixaudio com ...

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