533E Graphic Equalizer

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Table of Contents

Chapter 1 Introduction 1

Chapter 2 Operator Safety Summary 2

Chapter 3 Fast Set-Up 3

Chapter 4 Front Panel Controls 4

Chapter 5 Rear Panel Connections 7

Chapter 6 Troubleshooting 8

Chapter 7 Specifications 9

Chapter 8 Warranty and Service 10

Appendix A Flow Chart 12

Appendix B Input/Output Connections 13

Appendix C Declaration of Conformity 14

Rev A.02, 21 July 1997

Symetrix part number 53533E0A02

Subject to change at our whim and fancy without notice.

©1997, Symetrix, Inc. All right reserved.

Symetrix is a registered trademark of Symetrix, Inc.

Mention of third-party products is for informationalpurposes only and constitutes neither an endorsement nora recommendation. Symetrix assumes no responsibilitywith regard to the performance or use of these products.

Under copyright laws, no part of this manual may bereproduced or transmitted in any form or by any means,electronic or mechanical, including photcopying,scanning, recording or by any information storage andretrieval system, without permission, in writing, fromSymetrix, Inc.

6408 216th St. SWMountlake Terrace, WA 98043 USA

Tel (425) 778-7728Fax (425) 778-7727

Email symetrix@symetrixaudio.comWebsite www.symetrixaudio.com53

3E

1

533E

IntroductionChapter 1

Thank you for choosing a Symetrix GraphicEqualizer. We think you will be glad that youmade this choice because, out of the sea ofgraphic eqs that you might have purchased, the533E is one of the only affordable equalizersthat offer truly professional performance.

How did we do this? First, because our designteam believes that no one should have to settlefor �good enough�, they threw out the conven-tional design ideas and started from scratch.The result: a highly advanced filter topologythat delivers extremely low distortion andnoise, even at very high signal levels.

Second, our state-of-the-art facility gives usthe ability to build quickly, consistently, and inhigh volume, allowing us to keep our priceslow. In addition, the 533E makes extensive useof surface-mount components. This allows usto cram more circuitry onto a smaller circuitboard, further reducing costs.

In fact, the 533E is a purist�s dream - audio-phile sound quality, uncluttered controlsurface, and rugged reliability in one package.They offer thirty-one filter bands per channelon ISO 1/3rd octave centers. Through the useof a global range switch, each band deliverseither 6dB or 12dB of cut or boost. Thegrounded center detent position on each bandserves as an on/off switch that completelyremoves that band from the audio signal path.In addition, they sport 12dB per octave HighCut and Low Cut filters. Each has a sweepablecutoff frequency and a control range thatextends well into the sub/ultrasonic.

Of course, the controls and features aresecondary to the all important question: Howdoes it sound? Consider the following facts.Our proprietary filter technology delivers thelowest noise floor of any graphic equalizer in

the world, ultra-accurate summing, andminimal ringing and phase shift. The totalharmonic distortion is less than 0.002%.Translation: the 533E is clean, clear, andmusical-sounding.

To ensure the highest level of year-after-yearperformance, we build the 533E to touringstandards. Double sided, glass epoxy circuitboards, metal shaft, plastic film slide potenti-ometers, gold-plated XLR connectors, and aheavy duty all-steel chassis deliver ruggedreliability. You don�t have to treat these withkid gloves.

The details are worth noting, too. High-contrastfront panel graphics make your control settingseasy to read even in a darkened concert hall.Servo-balanced outputs remove all DC offsetfrom the 533E�s output. This eliminates theneed for DC blocking capacitors in the signalpath while improving noise, distortion, andlow-frequency performance. Of course, the533E incorporates a high-current, internalpower supply with an IEC-type detachablepower cord. No �wall warts� here!

We recommend that you read this manualcover-to-cover. You�ll find the answers to mostof your questions inside. However, if you arein a hurry, go directly to the Fast First-TimeSetup section. It will get you started quickly.Should you have any comments or questions,please do not hesitate to contact us at thenumbers/addresses below. Your calls arealways welcome.

Phone 425 778 7728

Fax 425 778 7727

Email symetrix@symetrixaudio.com

+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

2

533E

The information in this summary is intendedfor persons who operate the equipment as wellas repair personnel. Specific warnings andcautions are found throughout this manualwherever they may apply; they do not appearin this summary.

The notational conventions used in this manualand on the equipment itself are described in thefollowing paragraphs.

The lightning flash with arrowhead symbolwithin an equilateral triangle is intended toalert the user of the presence of uninsulated"dangerous voltage" within the product'senclosure that may be of sufficient magnitudeto constitute a risk of electric shock to persons.

The exclamation point within an equilateraltriangle is intended to alert the user of thepresence of important operating and mainte-nance (servicing) instructions in the literatureaccompanying the product (i.e. this manual).

Caution To prevent electric shock, do notuse the polarized plug suppliedwith the unit with any extensioncord, receptacle, or other outletunless the blades can be fullyinserted.

Terms

Several notational conventions are used in thismanual. Some paragraphs may use Note,Caution, or Warning as a heading or certaintypefaces and capitalization are used toidentify certain words. These are:

Note Identifies information that needsextra emphasis. A Note generallysupplies extra information to helpyou to better use the product.

Equipment Markings

Operator Safety Summary Chapter 2

Caution Identifies information that, if notheeded, may cause damage to theSymetrix product or other equipment in your system.

Warning Identifies information that, ifignored, may be hazardous toyour health or that of others.

CAPITALS Controls, switches or othermarkings on the product'schassis.

Boldface Strong emphasis.

Power source - This product is intended tooperate from a power source that does notapply more than 255Vrms between the powersupply conductors or between either powersupply conductor and ground. A protectiveground connection, by way of the groundingconductor in the power cord, is essential forsafe operation.

Danger from loss of ground - If the pro-tective ground connection is lost, all accessibleconductive parts, including knobs and controlsthat may appear to be insulated, can render anelectric shock.

Proper power cord - Use only the power cordspecified for the product. Use only a powercord that is in good condition.

Operating location - Do not operate thisequipment under any of the following condi-tions: explosive atmospheres, in wet locations,in inclement weather, improper or unknownAC mains voltage, or if improperly fused.

Stay out of the box - To avoid personal injuryor injury to others, do not remove the productcovers or panels. Do not operate the productwithout the covers and panels properlyinstalled.

AVIS: NE PAS OUVRIR

Il ne se trouve a l’interieur aucune piece pourvant entre reparée l’usager.

SEE OWNERS MANUAL. VOIR CAHIER D’INSTRUCTIONS.

S’adresser a un reparateur compétent.

RISQUE DE CHOC ELECTRIQUE

No user serviceable parts inside. Refer servicing to qualified service personnel.

CAUTION

WARNING:TO REDUCE THE RISK OF FIRE ORELECTRIC SHOCK DO NOT EXPOSETHIS EQUIPMENT TO RAIN OR MOISTURE

DO NOT OPENRISK OF ELECTRIC SHOCK

3

533E

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Fast Set-Up

This section is for those of you who are in too much of a hurry to read the rest of the manual. It providesjust enough information to get the Graphic Equalizer hooked up and working in your sound system.

Chapter 3

Set the INPUT LEVEL control at the unitygain setting . This is noted as �U� at the12:00 position.

Set all the graphic EQ slide potentiom-eters at 0dB, center detent position.

Set LOW CUT control fully counterclock-wise and the HIGH CUT control fullyclockwise.

Set the MODE switch to +/-12dB.

Connect equalizer to AC power.

Connect the audio inputs and outputs.See chapter 5 if you need more informa-tion.

Let �er rip.

Now read the rest of this manual.�����

4

533E

Front Panel Controls

FRONT PANEL

Chapter 4

18KHIGH CUT

±12dB

BYPASS

42K

3K 65K

MODE 0

-6

22

LOW CUT

50UINPUT

5K115

6 260

8

∞- +15

CLIP

10dB

0dB

POWER

-20dB

LEVEL CUT FILTERS

±6dB

-3

Input Level control - Use this control toadjust the 533E�s input sensitivity. The rangeis -∞ (infinity) to + 15dB. You can do threeuseful things with this knob:

1) Turn the knob down completely to muteyour sound system - this can be very usefulduring troubleshooting, or if your consolelacks an output mute switch.

2) Turn it down a little to give yourself enoughheadroom to make massive boosts in the EQsection without clipping.

3) Turn the knob up a little to boost a low-level input signal - this maximizes your signalto noise ratio.

Note: This feature, like everything else onthe unit, will be bypassed if the 533Eloses power or gets disconnectedfrom AC power.

Output Level Meter - The four segment LEDmeter is designed to give you a quick, generalidea about the level of the 533E�s output. Thebottom LED at -20dBu is a �signal present�indicator. The next two LEDs, at 0dBu and+10dBu show the activity of a signal atnominal to somewhat hot line levels.

The top LED, labeled CLIP, will light when a+20 dBu signal is detected at the input bufferamp or output stage, though the 533E actuallyclips at +22dBu. Consider the CLIP LED aslightly early warning light.

Note: If the INPUT LEVEL control is turned allthe way down and you send a very hot inputsignal (greater than +20dBu) into theequalizer�s input, the CLIP LED will illuminateeven though there will be no output signal.This will occur because the input buffer amp,which is before the INPUT LEVEL control, is one

of the points at which the CLIP

LED detects excessive signallevels.

Low Cut Filter - Diagram 1illustrates the 12dB per octavelow-frequency rolloff filter. Thisfilter is good for several things. Itprotects the low-frequency driversin your sound system by removingpotentially damaging subsonic

audio material. This will also increase theefficiency of the amplifiers - why make themamplify signals that the speakers cannotreproduce? It can also clean up an overlymuddy sounding mix or improve speechintelligibility in announce systems by removingexcessive low-frequency audio material. Therange of this control is 6 Hz to 260 Hz.

High Cut Filter - Diagram 2 shows the rangeof the 12dB per octave high-frequency rollofffilter (3kHz to 65kHz). Use this control toremove unwanted noise or hiss that is greaterin frequency than the highest frequency contentof the program material you are trying toreproduce. This is especially pertinent tospeech reinforcement and paging systems.

Mode Switch - This space-saving, threeposition toggle switch controls the cut/boostrange of the faders AND functions a BYPASSwhen set in the middle position.

If you require very fine cut and boost controlfor critical system voicing, put this switch inthe +/-6dB mode. Permanent installations suchas churches or performing arts theaters wouldbe a good place to use this mode.

The +/-12dB mode is most useful for concertand club sound applications where quick (andsometimes extreme) control is desired. This, ofcourse, will reduce the resolution of the fader,but the 45mm, mid-throw faders provide morethan adequate resolution for most applications.In addition, we have adjusted the control taperso that the majority of the fader throw isdedicated to the +/- 6dB range, giving yougreater resolution in that crucial area.

5

533E

AUDIO PRECISION 531E vs 23 MAY 96 10:54:00

-20.00

-15.00

-10.00

-5.000

0.0

5.0000

10.000

15.000

20.000

AMPL(dBu)

20 100 1k 10k 20k

FREQ(Hz)AUDIO PRECISION 531E vs 23 MAY 96 10:49:15

-20.00

-15.00

-10.00

-5.000

0.0

5.0000

10.000

15.000

20.000

AMPL(dBu)

20 100 1k 10k 20k

FREQ(Hz)

The Graphic Equalizer - The 533E has 31filter bands on ISO 1/3rd octave centers perchannel. The lowest filter band is on 20hz, thehighest is 20kHz. Note the dual cut/boost scaleon the side of the fader bank - the differentscales correspond to the +/- 6dB and +/- 12dBpositions of the MODE switch.

Applied correctly, the graphic equalizer is auseful and powerful tool. It can make amediocre system sound good. It can make agood system great. However, used incorrectly,it can make even a great system sound terrible.With this in mind, we would like to offer sometips to get you started in the right direction.

Tip #1 Always listen to the PA system with thegraphic EQ in bypass before you start fiddlingwith the sliders because many �frequencyresponse� problems are actually somethingelse entirely. If something sounds wrong,check your entire PA system for properhookup and performance BEFORE you startworking with the equalizer. For example:

m Make sure that all the speakers are

working properly. Check each driver within anenclosure separately. Large sound systems mayhave many identical drivers in an array, makingit hard to pinpoint blown, or out-of-phasedrivers by ear.m Adjust your overall system gain structureso that all of the components in the signal pathare operating at nominal levels.m Check your cabling! The vast majority ofsound system problems are related to cables.Intermittent connections, polarity reverses, badgrounds, shorts, etc. are all examples ofproblems that can manifest themselves as�frequency response� problems. For instance,if the cable feeding your stage left subwooferarray is polarity reversed, causing the leftsubwoofer array to be out-of-phase with theright subwoofer array, you will percieve this asa lack of adequate low end power. Obviously,no amount of work with the graphic equalizerwill fix this problem. Of course, the larger thesystem, the more there is to check. Be thor-ough.

-6

+6

+12

20K16K10K 12.5K

0

-12

8K5K 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

MODECH1

BYPASS

±12dB0

-12

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

-3

+3

+6

-6

+6

±6dB

-6

Diagram 1 - Low Frequency Rolloff Filter Diagram 2 - High Frequency Rolloff Filter

6

533E

Tip #2 If your sound system uses an activecrossover, as almost all concert sound systemsdo, always adjust the crossover before you tryany equalization. You will maximize theperformance of your system by preciselymatching the crossover settings to the require-ments of your loudspeaker array. This can onlybe done properly before you start working withthe graphic EQ.

Tip #3 Whether you �tune� your system usingthe pink noise/spectrum analyzer method, orby playing music and using your ears, youshould always do this at roughly the samevolume that you expect to be running thesystem during the actual show. This is impor-tant because the frequency response of thehuman ear varies with sound pressure level.This phenomenon is well documented, first byFletcher and Munson (and their eponymous�curves�) and later (and more accurately) byRobinson and Dodson.

+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

±12dB

BYPASS

MODE 0

4025 31.5

-6

-12

20 50

+6

+3

-3

-6

+6

+3

±6dB

-3

-6

Tip #4 Cut and boost only at the frequencydesired (one at a time)- do not move entiregroups of sliders indiscriminately because thisleads to: The dreaded fader creep! No, this isnot a name for the guy who stands behind themixing console. Rather, it is the situation inwhich you find yourself appyling hugeamounts of cut or boost using several (ormany) adjacent bands, yet it doesn�t seem tohelp fix the problem. A classic example of thisis the �Disco Smile�. This term refers to an eqcurve that looks like the one shown below.

The key to successful graphic equalization isto identify the frequency imbalance problemand do the absolute minimum amount of cutor boost that will correct the problem.

Diagram 3 - The “Disco Smile”

7

533E

Rear Panel ConnectionsChapter 5

REAR PANEL

20 WATTSMAXIMUM

AC INPUT

QUÉ AUX E.-U. PAR SYMETRIX INC., LYNNWOOD, WASHINGTON.RÉFÉREZ TOUTE RÉPARATION À UN TECHNICIEN QUALIFIÉ.

AC Power Cord - The IEC-type AC powersocket on the 533E�s rear panel will acceptstandard detachable power cords for the US orEurope. However, make sure you know what theoperating voltage of the unit is before you plugit in. If you are unsure of the unit�s operatingvoltage, or would like to change it, pleasecontact the factory or your nearest qualifiedservice center.

Failsafe Bypass Relay - The 533E is equippedwith a failsafe bypass relay to ensure that the units will pass audio signal in the event of powerfailure. When AC power is connected, the relay routes the audio signal through the equalizer�ssignal path. If AC power is disconnected, or if the unit�s internal power supply should happen tofail, the relay connects the output jacks directly to the input jacks. This bypasses all circuitry andensures the continued operation of your sound system, albeit without equalization.

INPUT

UNBALANCEDBALANCED/

BALANCED

Inputs - The 533E is equipped with electronically balanced,line level inputs - one XLR and one 1/4" TRS, wired inparallel. The chart on the rear panel indicates the pin/wiringconfiguration. This chart is also shown below.

Though it is theoretically possible to use both inputs at once,we strongly recommend that you do not unless it is a direemergency. (and we mean dire...) It will not damage the533E, but we cannot say the same for the other units in-volved. See appendix B for examples of adapter wiring.

OUTPUT

BALANCED/UNBALANCED

BALANCED

Outputs - The 533E is equipped with servo-balanced, line-level outputs - one XLR and one 1/4" TRS per channel, wiredin parallel. The chart on the rear panel indicates the pin/wiring configuration. This chart is also shown below.

Unlike the input jacks, you can use both output jacks simulta-neously. The only caveat is that if you use one of the outputjacks unbalanced and the other balanced, make sure that theunbalanced connection does not short either of the signal-

carrying leads to ground. If you use a standard 1/4" TS unbalanced plug in the 533E�s 1/4" output,it will also unbalance the XLR output connector. To avoid this situation, use a TRS plug in the 1/4"output and make sure that the Ring is left unconnected (see appendix B for examples of adapterwiring.).

TIPRING

SLEEVE

2

3

1

INPUT

21

3

TIP = HIGH(+) = PIN 2RING = LOW(-) = PIN 3SLEEVE = GND = PIN 1

TYPICAL BALANCED CONNECTIONS

OUTPUT

This chart (which isscreened on the rear panelnext to the INPUT andOUTPUT connectors) indi-cates the pin/wiring configu-ration for the INPUT andOUTPUT connectors.

8

533E

Troubleshooting Chapter 6

There is no output signal.

Check input and output cables andconnections.

Determine that there really is a signalcoming from the source, and that it isgetting to the 533E.

Distortion in the output signal.

Put 533E into BYPASS. If a problemremains, unplug unit to enagage thefail-safe bypass relay. If problem stillremains, check the audio source.

Check the level of the input signal. Isit overdriving the 533E�s input? If so,reduce the incoming signal level.

Is the 533E�s clip indicator lit?

Is the incoming signal already dis-torted?

Listen �up stream� from the 533E todetermine that you are feeding it aclean signal.

Are you using an EQ band or bands toapply a lot of boost? If so, you may berunning out of headroom. Fix this bylowering the input level control, orreducing the amount of boost.

Buzz in the output.

Check input and output connectorwiring.

Check for ground loops betweeninterconnected system equipment.

Are all system components on thesame

AC ground?

Noise (hiss).

Unplug the 533E to engage thefail-safe bypass relay. If problemremains, check your signal source.

Check input signal levels and inputlevel control settings. The input signalmay be too low in level. If so, boostthe incoming signal (if possible).

Solutions toCommon Problems

Is the input signal already noisy?

Listen �up stream� from the 533E todetermine that you are feeding it aclean signal.

Controls don�t seem to have any effect.

Is AC power connected to the unit?Since the 533E uses automatic,fail-safe bypass relays, they will stillpass audio even when power isturned off, though the controls willhave no effect.

Is the Mode switch in the correctposition?

The 533E does not power up or does notrespond properly.

Consult a qualified service technicianor the Symetrix factory.

The 533E is not plugged in, but works greatanyway.

Ok, you stumped us.

9

533E

SpecificationsChapter 7

The Graphic Equalizer (EQ) shall be a dualchannel unit that provides 31 filter bands perchannel, on ISO 1/3rd octave centers. Thelowest band shall be centered on 20Hz, thehighest on 20kHz. There shall be a front panelmode switch which selects the cut/boost rangeof the eq band faders, and acts as a bypass.The eq band controls shall be 45mm metalshaft faders. There shall also be separate,sweepable-frequency high-pass and low-passfilters on each channel. The unit shall occupythree rack spaces (3U).

The high-pass filter shall have a 12dB/octaveslope with a user-adjustable cutoff frequencyrange of 6Hz to 260 Hz, The low-pass filtershall also have a 12dB/oct slope with a user-adjustable cutoff frequency range from 3kHzto 65 kHz. A front panel input level control

shall provide -∞ (infinity)dB to +15dB of gainadjustment. When the unit is rendered inopera-tive by loss of power, the inputs and outputswill be wired together by a fail-safe bypassrelay.

The frequency response with all filter bandsflat, EQ in, high-pass and low-pass set to the

Architects and Engineers Specifications for the 533E

Specifications for the 533E

Input/OutputNumber of Audio Channels TwoMaximum Input Level +21 dBu BalancedMaximum Output Level +21 dBu Balanced, +17 dBu UnbalancedInput Impedance 10k Ohms Balanced, 5k Ohms UnbalancedOutput Impedance 400 Ohms Balanced, 200 Ohms Unbalanced

Performance DataFrequency Response 10 Hz - 38 kHz (+0 dB, -1 dB)Dynamic Range >112 dBSignal to Noise Ratio >94 dB

(unweighted,ref to +4 dBu,eq in, all bands flat)

THD+Noise (1 kHz - +4 dBu) <0.002%(10 Hz to 30 kHz measured bw,

eq in, all bands flat)

outside extremes of their ranges, shall be 10Hzto 38kHz (+0dB, -1dB). The total harmonicdistortion plus noise shall be less than 0.002%(10Hz - 30kHz, EQ in, all bands flat). Thedynamic range shall be greater than 112 dB.The EQ shall accept a maximum input signal of+21 dBu and have a maximum output level of+21 dBu. There shall be a four-segment LEDlevel meter.

The inputs shall be direct-coupled, activebalanced designs terminated with 3-pin XLR(AES/IEC standard wiring), and ¼" TRS. Theinput circuitry shall incorporate RFI filters.There shall be a servo-balanced, direct-coupledoutput that shall terminate in 3-pin XLR (AES/IEC standard wiring) and ¼" TRS.

The EQ shall be capable of operating by meansof its built-in power supply connected to 117Vnominal AC, 105-130V, 50-60 Hz (230Vnominal AC, 207-253V, 50 Hz where appli-cable). Power consumption shall be 20 wattsmaximum. There shall be a rear panel recep-tacle for an IEC-type detachable power cord.The EQ shall be UL and CE approved.

The unit shall be a Symetrix Incorporatedmodel 533E Graphic Equalizer.

Graphic EQ ControlsFrequency Control Range 20 Hz - 20 kHz

(31 bands, ISO 1/3rd octave centers)Cut/Boost Range ±12 dB (Mode switch up),

±6 dB (Mode switch down)Cut FiltersLow Cut Filter Slope 12 dB/octaveCutoff Frequency Range 6 Hz - 260 HzHigh Cut Filter Slope 12 dB/octaveCutoff Frequency Range 3 kHz - 65 kHz

PhysicalSize (hwd) 5.22 x 19 x 8.25 inches,

13.26 x 48.26 x 20.955 centimetersWeight 10.2 lbs net

ElectricalPower requirements 117V nominal, 105 to 130V AC,

50 to 60 Hz, 20 watts230V nominal, 207 to 253V AC,

50 Hz, 20 watts

10

533E

Warranty and Service Chapter 8

Symetrix, Inc. expressly warrants that theproduct will be free from defects in materialand workmanship for one (1) year. Symetrix'sobligations under this warranty will be limitedto repairing or replacing, at Symetrix's option,the part or parts of the product which provedefective in material or workmanship withinone (1) year from date of purchase, providedthat the Buyer gives Symetrix prompt notice ofany defect or failure and satisfactory proofthereof. Products may be returned by Buyeronly after a Return Authorization number (RA)has been obtained from Symetrix. Buyer willprepay all freight charges to return the productto the Symetrix factory. Symetrix reserves theright to inspect any products which may be thesubject of any warranty claim before repair orreplacement is carried out. Symetrix may, at itsoption, require proof of the original date ofpurchase (dated copy of original retail dealer'sinvoice). Final determination of warrantycoverage lies solely with Symetrix. Productsrepaired under warranty will be returnedfreight prepaid by Symetrix via United ParcelService (surface), to any location within theContinental United States. At Buyer's requestthe shipment may be returned via airfreight atBuyer's expense. Outside the ContinentalUnited States, products will be returned freightcollect.

The foregoing warranties are in lieu of allother warranties, whether oral, written,express, implied or statutory. Symetrix, Inc.expressly disclaims any IMPLIED warran-ties, including fitness for a particularpurpose or merchantability. Symetrix'swarranty obligation and buyer's remedieshereunder are SOLELY and exclusively asstated herein.

This Symetrix product is designed andmanufactured for use in professional andstudio audio systems and is not intended forother usage. With respect to products pur-chased by consumers for personal, family, orhousehold use, Symetrix expressly disclaimsall implied warranties, including but notlimited to warranties of merchantabilityand fitness for a particular purpose.

This limited warranty, with all terms, condi-tions and disclaimers set forth herein, shallextend to the original purchaser and anyonewho purchases the product within the specifiedwarranty period.

Warranty Registration must be completed andmailed to Symetrix within thirty (30) days ofthe date of purchase.

Symetrix does not authorize any third party,including any dealer or sales representative, toassume any liability or make any additionalwarranties or representation regarding thisproduct information on behalf of Symetrix.

This limited warranty gives the buyer certainrights. You may have additional rights pro-vided by applicable law.

Limitation of Liability

The total liability of Symetrix on any claim,whether in contract, tort (including negligence)or otherwise arising out of, connected with, orresulting from the manufacture, sale, delivery,resale, repair, replacement or use of anyproduct will not exceed the price allocable tothe product or any part thereof which gives riseto the claim. In no event will Symetrix beliable for any incidental or consequentialdamages including but not limited to damagefor loss of revenue, cost of capital, claims ofcustomers for service interruptions or failure tosupply, and costs and expenses incurred inconnection with labor, overhead, transporta-tion, installation or removal of products orsubstitute facilities or supply houses.

533ELimited Warranty

11

533E

If you have determined that your 533Erequires repair services and you live outside ofthe United States please contact your localSymetrix dealer or distributor for instructionson how to obtain service. If you reside in theU.S. then proceed as follows:

Return authorization

At the Symetrix factory, Symetrix will performin-warranty or out-of-warranty service on anyproduct it has manufactured for a period offive years from date of manufacture.

Before sending anything to Symetrix, contactour Customer Service Department for a returnauthorization (RA) number. The telephonenumber is (425) 778-7728, Monday throughFriday, 8AM (800 hours) though 4:30 PM(1630 hours), Pacific Time.

In-warranty repairs

To get your 533E repaired under the terms ofthe warranty:

1. Call us for an RA number.

2. Pack the unit in its original packagingmaterials.

3. Include your name, address, daytimetelephone number, and a brief statement ofthe problem.

4. Write the RA number on the outside of thebox.

5. Ship the unit to Symetrix, freight prepaid.We do not accept freight collect shipments.

Just do these five things, and repairs made in-warranty will cost you only one-way freightcharges. We'll prepay the return (surface)freight.

Servicing the533E

If you choose to send us your product in somesort of flimsy packaging, we'll have to chargeyou for proper shipping materials. If you don'thave the factory packaging materials, then doyourself a favor by using an oversize carton,wrap the unit in a plastic bag, and surround itwith bubble-wrap. Pack the box full ofStyrofoam peanuts. Be sure there is enoughclearance in the carton to protect the rack ears(you wouldn't believe how many units arereturned with bent ears). We won't return theunit in anything but Symetrix packaging forwhich we will have to charge you. Of course, ifthe problem turns out to be operator inflicted,you'll have to pay for both parts and labor. Inany event, if there are charges for the repaircosts, you will pay for the return freight. Allcharges will be COD unless you have madeother arrangements (prepaid, Visa orMastercard).

Out-of-warranty repairs

If the warranty period has passed, you'll bebilled for all necessary parts, labor, packagingmaterials, and freight charges. Please remem-ber, you must call for an RA number beforesending the unit to Symetrix.

12

533E

Flow Chart Appendix A

BA

LA

NC

ED

INPU

T

BA

LA

NC

ED

OU

TPU

T

INPU

TLO

WC

UT

FIL

TER

HIG

HC

UT

FIL

TER

MO

DE

SW

ITC

H±

12

dB

±6

dB

BYP

ASS

+V

-20

dB

0d

B

10

dB

CLI

P

-V

10

OH

MS

.01

mFd

FU

SE

PO

WER

BA

LA

NC

ED

/U

NBA

LA

NC

ED

INPU

T

BA

LA

NC

ED

/U

NBA

LA

NC

ED

OU

TPU

T

BYPA

SS

RELAY

POW

ERSU

PPLY

31 T

HIR

D O

CTA

VE

FILT

ER B

AN

DS

LEV

ELRFI

FIL

TER

13

533E

Input/Output Connections Appendix B

FROM BALANCED OUT(TO UNBALANCED IN)

FROM ELECTRONIC, NON-TRANSFORMERBALANCED OUTPUT (TYPICAL OF SYMETRIX PRODUCTS)

TO UNBALANCED INPUTS

FROM BALANCED OUT

FROM UNBALANCED OUT

FROM BALANCED OUT

FROM BALANCED OUT

FEMALE XLRPIN 1 = GROUND

PIN 2 = HIGHPIN 3 = LOW

MALE XLRPIN 1 = GROUNDPIN 2 = HIGHPIN 3 = LOW

MALE TS PLUGTIP = HIGHSLEEVE = GROUND +

LOW

MALE RCA PLUGTIP = HIGHSLEEVE = GROUND +

LOW

MALE TRS PLUGTIP = HIGHRING = LOWSLEEVE = GROUND

MALE TRS PLUGTIP = HIGH

RING = LOWSLEEVE = GROUND

MALE TRS PLUGTIP = HIGH

RING = NOT USEDSLEEVE = GROUND+

LOW

MALE TS PLUGTIP = HIGH

SLEEVE = GROUND +LOW

MALE RCA PLUGTIP = HIGH

SLEEVE = GROUND +LOW

MALE TS PLUGTIP = HIGHSLEEVE = GROUND +

LOW

MALE RCA PLUGTIP = HIGHSLEEVE = GROUND +

LOW

TERMINAL STRIP(+) = HIGH(-) = LOW

= GROUND

TERMINAL STRIP(+) = HIGH(-) = LOW

= GROUND

TERMINAL STRIP(+) = HIGH(-) = UNUSED

= GROUND

TERMINAL STRIP(+) = HIGH

(-) = NOT USED= GROUND

FEMALE XLRPIN 1 = GROUND + LOW

PIN 2 = HIGHPIN 3 = NOT USED

2

2

23

3

31

1

1

RINGRING

RING

SLEEVESLEEVE

SLEEVE

TO BALANCED IN

TO BALANCED IN

TO BALANCED IN(FROM UNBALANCED OUT)

TO UNBALANCED IN

TIPTIP

TIP

TO UNBALANCED IN FROMTRANSFORMER COUPLED ORFLOATING BALANCED OUTPUT

TO BALANCED IN

14

533E

Declaration of ConformityAppendix C

Declaration of Conformity

We, Symetrix Incorporated, 6408 216th St. SW, Mountlake Terrace, Washington, USA,declare under our sole responsibility that the product:

533E Graphic Equalizers

to which this declaration relates, is in conformity with the following standards:

EN 60065Safety requirements for mains operated electronic and related

apparatus for household and similar general use.

EN 50081-1Electromagnetic compatibility - Generic emission standard

Part 1: Residential, commercial, and light industry.

EN 50082-1Electromagnetic compatibility - Generic immunity standard

Part 1: Residential, commercial, and light industry.

The technical construction file is maintained at:

Symetrix, Inc.6408 216th St. SW

Mountlake Terrace, WA, 98043USA

The authorized representative located within the European Community is:

World Marketing AssociatesP.O. Box 34

Newquay, Cornwall, TR7 1TU, U.K.

Date of issue: 1 December 1996

Place of issue:Mountlake Terrace, Washington, USA

Authorized signature:

Dane Butcher, President, Symetrix Incorporated.

15

533E

16

533E 6408 216th St. SW

Mountlake Terrace, WA 98043 USATel (425) 778-7728Fax (425) 778-7727

Email symetrix@symetrixaudio.comWebsite www.symetrixaudio.com