Instruction/ maintenance manual of the product EQ231G-SP LA Audio Electronic
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Dual 31 Band Graphic Equaliser & Dy namics Processor User Manual.
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.
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.
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.
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.
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.
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.
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 .
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.
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.
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.
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.
User Manual 3. Operating Instr uctions (c ontd.) © LA Audio 2004 13.
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.
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 .
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.
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.
User Manual 5. Block Diagram & Specific ations © LA Audio 2004 18 5. Block Diagram & Specificat ions 5.1 Block Diagram.
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 impedanc.
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.
An important point after buying a device LA Audio Electronic EQ231G-SP (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought LA Audio Electronic EQ231G-SP yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data LA Audio Electronic EQ231G-SP - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, LA Audio Electronic EQ231G-SP you will learn all the available features of the product, as well as information on its operation. The information that you get LA Audio Electronic EQ231G-SP will certainly help you make a decision on the purchase.
If you already are a holder of LA Audio Electronic EQ231G-SP, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime LA Audio Electronic EQ231G-SP.
However, one of the most important roles played by the user manual is to help in solving problems with LA Audio Electronic EQ231G-SP. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device LA Audio Electronic EQ231G-SP along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
