Ashly GQX-3101 user manual

User manual for the device Ashly GQX-3101

Device: Ashly GQX-3101
Category: Musical Instrument
Manufacturer: Ashly
Size: 0.16 MB
Added : 7/16/2013
Number of pages: 16
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Abstracts of contents
Summary of the content on the page No. 1

GQX-3102
GQX-3101
GQX-1502
Graphic Equalizer
Operating Manual
Channel 1
VU Clip
+15 (+6) +6 +6
+3 Range 6 - 15
+10 +4
0
+5 -3
+2 EQ In - Out
-6
0 0
-9
HPF In - Out
-5 -12
-3
GQX Series 50
-15 100
Model 3102 -10 -9
-18
Stereo Third Octave
25 200
-15 (-6) - -21
Graphic Equalizer
Output
20 25 31.5 40 50 63 80 100 125 160 200 250 315 400 500 630 800 1K 1.25K 1.6K 2K 2.5K 3.15K 4K 5K 6.3K 8K 10K 12.5K 16K 20K Gain (dB) 12 (Hz) 285
Level
VU
Clip
+15 (+6) +6 +6
+3
Range 6 - 15
+10
+4
0
+5 +2
-3
On EQ I

Summary of the content on the page No. 2

Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer Table Of Contents 1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 AUDIO CONNECTORS AND CABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3.1 Inputs . . . . . . . . . . . . . . . . . . .

Summary of the content on the page No. 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. Lower noise and distortion, greater accuracy, and additional output options are the result. We continue using “Q” enhanced Wein bridge filters and interleaved summing for constant “Q”, low ripple, and minimum filter interactio

Summary of the content on the page No. 4

Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer 3 Input is active balanced. 2 1 Output is active servo-balanced. If unbalanced connection is used be sure to ground unused path. Maximum in/out level is +22dBu. PUSH (+) (-) (-) (+) (-) (+) Inputs Outputs (Parallel) (Parallel) XLR connector, or terminal strip for an unbalanced sig- 3. AUDIO CONNECTORS AND CABLES nal, the (-) input connection MUST be tied to ground, or loss of signal level may result. Your GQX series equalizer

Summary of the content on the page No. 5

Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer 120 VAC 50-60 Hz. 24 Watts Ashly Audio Inc. Rochester, NY Made In USA Model GQX-3101 1/2 Amp CAUTION: Disconnect power cord before replacing fuse TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE ATTENTION: COVER. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. TO REDUCE Debrancher THE RISK OF FIRE REPLACE ONLY WITH SAME TYPE FUSE. TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT avant d

Summary of the content on the page No. 6

Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer GQX Series Model 3101 Third Octave Graphic Equalizer 20 25 31.5 40 50 63 80 100 125 160 200 250 315 400 500 Power 5. CONTROLS 5.4 EQ Bypass Switch This switches the Graphic Equalization and gain 5.1 Gain adjustments. This way, the effect of any equalization can The gain control adjusts the overall gain of the be compared to a “flat” response. This switch does not equalizer when the EQ switch is “in”. It is generally used de

Summary of the content on the page No. 7

Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer VU Clip +15(+6) +6 +6 Range 6 - 15 +3 +10 +4 0 +5 +2 -3 EQ In - Out -6 0 0 -9 HPF In - Out -5 -3 -12 50 100 -15 -10 -9 -18 25 200 -15(-6) - -21 Output Level 12 285 5K 6.3K 8K 10K 12.5K 16K 20K Gain (Hz) (dB) Very low bass (the “wind” in a kick drum, al- this process to avoid explosive feedback and possible sys- most felt as much as heard -40Hz-80Hz. tem and hearing damage! If you find feedback points with many equalizer bands

Summary of the content on the page No. 8

Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer 7. DESIGN THEORY VAR While most graphic equalizers look very much the same, there are several important differences in the cir- Z cuitry used to implement various designs. C Perhaps the major differences are in the filters. Some equalizers use a filter made of a capacitor, an in- ductor, and a resistor, or “RLC” filter. The advantage L here is simplicity, but the real disadvantage is the induc- tor itself. An inductor is a c

Summary of the content on the page No. 9

Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer In designing a graphic equalizer, a selection of The summing system in a graphic equalizer is filter sharpness must be made. More sharpness (higher also important. Since there are a number of filters which Q) produces less filter overlap and tighter control over an combine to produce the overall response, it is important individual band, but also causes “ripple” in the frequency that the filters not interact (they WILL overl

Summary of the content on the page No. 10

Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer 8. TROUBLESHOOTING TIPS 8.5 Excessive Hum or Noise Hum will usually be caused by a ground loop be- 8.1 No Audio Output tween components. Try using the suggested bal- Check AC power - is the pilot light on? anced input and output hook-ups if the other Check in/out connections - are they reversed? pieces of equipment used in conjunction with your Are you sure you have an input signal? equalizer have balanced inputs and outputs.

Summary of the content on the page No. 11

Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer 10. SPECIFICATIONS Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GQX1502 . . . . . . . . . . . . . . . . . . GQX3101/3102 Input Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Active Balanced . . . . . . . . . . . . . . Active Balanced Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20KΩ . . . . . . . . . . . . . . . . . . . . . . . 2

Summary of the content on the page No. 12

Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer 12 12. SCHEMATICS Figure 12.2: GQX 1502 Block Diagram

Summary of the content on the page No. 13

Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer 13 Figure 12.2: GQX 1502 Schematic Diagram

Summary of the content on the page No. 14

Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer 14 Figure 12.1: GQX 3102, GQX 3101 Block Diagram

Summary of the content on the page No. 15

Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer 15 Figure 12.1: GQX 3102, GQX 3101 Schematic Diagram

Summary of the content on the page No. 16

Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer ASHLY AUDIO INC. 847 Holt Road Webster, NY 14580-9103 Phone: (716) 872-0010 Fax: (716) 872-0739 Toll Free (800) 828-6308 Internet: http://www.ashly.com/ 1997 by Ashly Audio Corporation. All rights reserved worldwide. Printed in USA 1/97 GQX Rev 2


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