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LA Audio Electronic EQ231G-SP - page 1
Dual 31 Band Graphic Equaliser & Dy namics Processor User Manual ...
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LA Audio Electronic EQ231G-SP - page 2
User Manual Copy right © LA Audio 2004 2 Copy right Copyright 2004. A ll rights reserved. The inf ormation in t his document is subject to change without notice. Audient plc makes no warrant y of any kind with respect to the m aterial in this document and shall not be liable for er rors contained her ein or for incidental or consequential dam ages ...
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LA Audio Electronic EQ231G-SP - page 3
User Manual Thank you © LA Audio 2004 3 Thank y ou fo r buying this product. As can be found t hroughout the LA Audio range, your EQ231G-SP has been desig ned and manuf actured to the hig hest possible standar ds of perf ormance and r eliability. To make the m ost of your unit, we suggest that you take som e time to acq uaint yourself with the con ...
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LA Audio Electronic EQ231G-SP - page 4
User Manual Contents © LA Audio 2004 4 Contents IMPORTANT SAFETY INST RUCTI ONS 5 Safet y Inform ation 6 1. Intr oduction 7 2. Installat ion 8 3. Operat ing Instr uctions 11 4. Applications & T echniques 13 5. Block Diag ram & Specif ications 17 6. Repairs and W arranty 19 ...
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LA Audio Electronic EQ231G-SP - page 5
User Manual IMPORTANT SAFETY INSTRUCTIONS © LA Audio 2004 5 IMPORTA NT SA FETY INSTRUCTIONS WARNING THIS EQUI PMENT MUST BE EA RTHED. DO NO T EXPO SE TO RAIN OR MOIST URE. PLEA SE REA D A LL OF THE FOLLOWING INSTRUCTIONS A ND SA VE THEM FOR LA TER REFERENCE BEFORE A TTEMPTING TO CONNECT YOUR UNIT TO THE A C POWER SOURCE. CAUTION ATTENTION RISK OF ...
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LA Audio Electronic EQ231G-SP - page 6
User Manual Safety Inform ation © LA Audio 2004 6 Safety Information EARTH This unit is connect ed via its power cord to the mains saf ety earth. NEVER OPERAT E THE UNI T W ITH T HIS EART H CONNECTI ON REMOVED. COVERS DO NOT remove the covers. Refer servicing to qualified personnel only. VOLTAG E The EQ231G -SP is set to oper ate only at the volta ...
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LA Audio Electronic EQ231G-SP - page 7
User Manual 1. Introduction © LA Audio 2004 7 1. Introduction The EQ231G -SP is a high q uality dual 31-band 1/3 octave gr aphic equaliser including variable Hi and Lo-pass filt ers, Shelving EQ, Gate and Limit er. The G raphic Eq ualiser f eatures centre det ented, 45mm faders which give up to 12dB of cut and boost at 31 I SO centre f requencies, ...
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LA Audio Electronic EQ231G-SP - page 8
User Manual 2. Installation © LA Audio 2004 8 2. Installation It is i mport ant to read this sect i on bef ore appl ying power to the uni t. 2.1. Inspect i on and unpacki ng The EQ 231G-SP is caref ully packed at t he fact ory in a carton which is designed to withstand handling in transit . However if transit damage is evident, DO NOT discard any ...
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LA Audio Electronic EQ231G-SP - page 9
User Manual 2. Installation (contd.) © LA Audio 2004 9 2.4. External connect i ons The input and out put connectors ar e wired on female and male XLRs respectively, wired as follows: Pin 1: Ground Pin 2: Hot balanced sig nal Pin 3: Cold balanced signal 2.5. Im pedance & Terminati on Most modern audio systems have cable runs of less t han 100 m ...
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LA Audio Electronic EQ231G-SP - page 10
User Manual 2. Installation (contd.) © LA Audio 2004 10 2.6. Sig nal lev els The unit is desig ned to accept an input sig nal level of up to +20dBu (dB refer red to 0.775Vrms) . Above this, clipping ( distortion) of t he signal will occur. It should be not ed that the f ilter amplifier s may be driven into distort ion by ex cessive boost in the un ...
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LA Audio Electronic EQ231G-SP - page 11
User Manual 3. Operating Instr uctions © LA Audio 2004 11 3. Operating Instructions 3.1. Control s 1. EQ faders allow high-r esolution cont rol over EQ gain at 31 ISO f requencies. The f requency is indicated on the f ront panel, as are the amount s of cut and boost, between –12 and +12 dB. Each f ader has a centre det ent, which allows you to q ...
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LA Audio Electronic EQ231G-SP - page 12
User Manual 3. Operating Instr uctions (c ontd.) © LA Audio 2004 12 5. Shelving Filter Bypass sw itch allows the f ilter t o be taken out of circ uit. This allows you to hear its eff ects when compared to the unf ilter ed sound, and also to allow low frequencies to pass unaf f ected. 6. Shelving Filter Frequency rotary potentiomet ers enable contr ...
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LA Audio Electronic EQ231G-SP - page 13
User Manual 3. Operating Instr uctions (c ontd.) © LA Audio 2004 13 ...
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LA Audio Electronic EQ231G-SP - page 14
User Manual 4. Applications & T echniques © LA Audio 2004 14 4. A pplications & Techniques A graphic eq ualiser may be used in numerous sit uations, in many diff erent ways. It is impossible to document every implementation, but we hope that the f ollowing examples will serve as a useful starting point. 4.1. Some Examples a) Room equalisat ...
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LA Audio Electronic EQ231G-SP - page 15
User Manual 4. Applications & T echniques ( contd.) © LA Audio 2004 15 technique is q uite common in r ecording or pr oduction studios to t ailor a sound for its eventual reproduction medium . c) Elimina tion of "sib ilance" Sibilance is t he noise which occurs when someone is speaking who either has a "hissy" voice or who ...
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LA Audio Electronic EQ231G-SP - page 16
User Manual 4. Applications & T echniques ( contd.) © LA Audio 2004 16 Another useful eff ect t hat can be created with a graphic EQ is a ‘Comb Over’. T o give a mono source some int erest in a stereo m ix, the graphic eq ualiser can be used to create variances in each side of the stereo sig nal, thereby widening the sound. Route the m ono ...
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LA Audio Electronic EQ231G-SP - page 17
User Manual 4. Applications & T echniques ( contd.) © LA Audio 2004 17 compressor or limiter. Placing the gr aphic equaliser af ter dynamics could cause the compressor or limiter to r eact to f requencies not audible in the output, creating unusual undulations in volume not associated with the prog ram m aterial. The second reason f or placing ...
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LA Audio Electronic EQ231G-SP - page 18
User Manual 5. Block Diagram & Specific ations © LA Audio 2004 18 5. Block Diagram & Specificat ions 5.1 Block Diagram ...
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LA Audio Electronic EQ231G-SP - page 19
User Manual 5. Block Diagram & Specific ations (contd.) © LA Audio 2004 19 5.2 Specifi cat i ons Frequency Response 20 Hz - 20 kHz, -1dB Signal to Noise Rat io @ +4dBu output -96dB Input impedance 20 k Ω balanced Output im pedance 100 Ω balanced Max imum O utput Level (into 600 Ω Load, 1 k Hz, 600 Ohms Load) +20dBu Total Har monic Distor ...
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LA Audio Electronic EQ231G-SP - page 20
User Manual 6. Repairs and warranty © LA Audio 2004 20 6. Repairs and w a rranty The EQ 231G-SP is a rug gedly construct ed solid-state unit that req uires no preventative or routine m aintenance. The unit is constr ucted fr om the highest quality components, which are selected to provide consistent, long- lasting perf ormance. Each unit is ‘soa ...
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