Instruction/ maintenance manual of the product GQX-1502 Ashly
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GQX-3102 GQX-3101 GQX-1502 Graphic Equalizer Operating Manual ASHL Y AUDIO INC. 847 Holt Road W ebster , NY 14580-9103 Phone: (716) 872-0010 T oll-Free: (800) 828-6308 Fax: (716) 872-0739 Internet: http://www .
2 Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer T abl e Of Contents 1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 UNP ACKING . . . . . . . . . .
3 Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer 1. INTRODUCTION Congratulations on your purchase of an Ashly GQX series graphic equalizer . The GQX series equalizers are a second generation design including many refinements on our original GQ models.
4 Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer Inpu ts (P arallel) Outputs (Pa ra llel) (-) (+) (-) (+) Inpu t is active b ala nced. Out put i s act iv e serv o- bal a n ced. If u nbalanced connection is used be sure to ground unus ed p ath.
5 Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer 120 VAC 50-60 Hz. 24 W at t s Ash ly Au di o In c. Ro c h es t er, NY Ma de I n U S A Model GQX-3 101 1/2 Am p CAUT ION: Disconnect pow er cord before repla c ing fuse Debran c her avant d 'ouvr ir ATT E N TION: TO REDUCE THE RISK OF ELE CTRIC SHOCK DO NOT RE MOVE CO VER.
6 Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer 20 25 31.5 40 50 63 80 100 125 160 200 250 315 400 500 GQ X S e r ie s Model 3101 Third Octave Graphic Equal izer Power 5. CONTROLS 5.1 Gain The gain control adjusts the overall gain of the equalizer when the EQ switch is “in”.
7 Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer Range Output Lev el 5K 8K 10K 12.5K 16K 20K 6.3K Gai n +15(+6) +10 +5 0 -5 -10 -15( -6) (dB) Cli p EQ HPF +6 +3 0 -3 -6 -9 -12 -.
8 Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer - + OUT IN Figur e 7.1: Passive RLC Filter Design Figur e 7.3: W ein-Bridge Filter Design 7 . DESIGN THEOR Y While most graphic equalizers look very much the same, there are several important dif ferences in the cir- cuitry used to implement various designs.
9 Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer In designing a graphic equalizer , a selection of filter sharpness must be made.
10 Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer 8. TROUBLESHOOTING TIPS 8.1 No Audio Output Check AC power - is the pilot light on? Check in/out connections - are they reversed? Are you sure you have an input signal? 8.
11 Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer 10. SPECIFICA TIONS Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GQX1502 . . . . . . . . . . . . . . . . . . GQX3101/3102 Input T yp e . . . . . .
12 Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer Figur e 12.2: GQX 1502 Block Diagram 12. SCHEMA TICS.
13 Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer Figure 12.2: GQX 1502 Schematic Diagram.
14 Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer Figur e 12.1: GQX 3102, GQX 3101 Block Diagram.
15 Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer Figur e 12.1: GQX 3102, GQX 3101 Schematic Diagram.
Printed in USA 1/97 GQX Rev 2 Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer ASHL Y AUDIO INC. 847 Holt Road W ebster , NY 14580-9103 Phone: (716) 872-0010 Fax: (716) 872-0739 T oll Free (800) 828-6308 Internet: http://www .ashly .
An important point after buying a device Ashly GQX-1502 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Ashly GQX-1502 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 Ashly GQX-1502 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Ashly GQX-1502 you will learn all the available features of the product, as well as information on its operation. The information that you get Ashly GQX-1502 will certainly help you make a decision on the purchase.
If you already are a holder of Ashly GQX-1502, 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 Ashly GQX-1502.
However, one of the most important roles played by the user manual is to help in solving problems with Ashly GQX-1502. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Ashly GQX-1502 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
