Ashly GQX-1502 Operating Manual
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Ashly GQX-1502 Operating Manual

Ashly musical instrument operating manual gqx-3102, gqx-3101, gqx-1502
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GQX Series
Model 3102
Stereo Third Octave

Graphic Equalizer

20
25
31.5
40
50
63
80
100
On
Off
Power
GQX Series
Model 3101
Third Octave
Graphic Equalizer
20
25
31.5
40
50
63
80
100
Power
Channel 1
GQX Series
Model 1502
Stereo 15 Band
Graphic Equalizer
25
40
63
100
180
250
400
630
Power
847 Holt Road
Toll-Free: (800) 828-6308 Fax: (716) 872-0739 Internet: http://www.ashly.com/
GQX-3102
GQX-3101
GQX-1502
Graphic Equalizer
Operating Manual
125
160
200
250
315
400
500
630
800
1K
1.25K 1.6K
2K
2.5K 3.15K
125
160
200
250
315
400
500
630
800
1K
1.25K 1.6K
2K
2.5K 3.15K
+15
+10
+5
0
-5
-10
-15
1K
1.8K
2.5K
4K
6.3K
10K
18K
25
40
63
100
180
250
ASHLY AUDIO INC.
Webster, NY
14580-9103 Phone: (716) 872-0010
Channel 1
+6
+15 (+6)
+6
+3
+4
+10
+2
+5
0
0
-5
-3
-12
-15
-10
-9
-18
-
-21
-15 (-6)
Gain (dB)
4K
5K
6.3K
8K
10K 12.5K 16K
20K
+6
+15 (+6)
+6
+3
+4
+10
+2
+5
0
0
-3
-5
-12
-15
-9
-10
-18
-
-15 (-6)
-21
Channel 2
+15(+6)
+6
+6
+3
+4
+10
+2
+5
0
0
-3
-5
-12
-15
-9
-10
-18
-
-15(-6)
-21
4K
5K
6.3K
8K
10K 12.5K 16K
20K
Gain
(dB)
Channel 2
Gain (dB)
+6
+15
+10
+4
+5
+2
0
0
-5
-3
-9
-10
-
-15
400
630
1K
1.8K
2.5K
4K
6.3K
10K
18K
Ch1
Clip
VU
Range
6 - 15
0
-3
EQ
In - Out
-6
-9
HPF
In - Out
50
100
25
200
Output
12
285
Level
(Hz)
VU
Clip
Range
6 - 15
0
-3
EQ
In - Out
-6
-9
HPF
In - Out
50
100
25
200
12
285
(Hz)
Clip
VU
Range
6 - 15
0
EQ
In - Out
-3
-6
-9
HPF
In - Out
50
100
25
200
Output
Level
12
285
(Hz)
Clip
EQ
In - Out
Channel 1
HPF
In - Out
(40Hz)
Clip
EQ
In - Out
Channel 2
In - Out
HPF
(40Hz)
Ch2

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Summary of Contents for Ashly GQX-1502

  • Page 1: Graphic Equalizer

    Stereo 15 Band Graphic Equalizer 1.8K 2.5K 6.3K Power ASHLY AUDIO INC. 847 Holt Road Webster, NY Toll-Free: (800) 828-6308 Fax: (716) 872-0739 Internet: http://www.ashly.com/ GQX-3102 GQX-3101 GQX-1502 +15 (+6) -15 (-6) 1.25K 1.6K 2.5K 3.15K 6.3K 10K 12.5K 16K...

  • Page 2: Table Of Contents

    Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer INTRODUCTION ............3 UNPACKING .

  • Page 3: Introduction

    UNPACKING As a part of our system of quality control, every Ashly product is carefully inspected before leaving the factory to ensure flawless appearance. After unpacking, please inspect for any physical damage. Save the shipping carton and all packing materials , as they were carefully designed to reduce to minimum the possibility of transportation damage should the unit again require packing and ship- ping.

  • Page 4: Audio Connectors And Cables

    (-) input connection MUST be tied to ground, or loss of signal level may result. Servo-Balanced Output The Ashly servo-balanced output circuit is an active balanced output. This circuit maintains a constant output level (or difference voltage) between the (+) and...

  • Page 5: Grounding

    In a rack- mount installation where the equalizer is connected to other equipment with unbalanced inputs or outputs and the rack itself provides a good electrical connection between the Ashly Audio Inc. Rochester, NY Made In USA Model GQX-3101...

  • Page 6: Controls

    Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer GQX Series Model 3101 Third Octave Graphic Equalizer Power CONTROLS Gain The gain control adjusts the overall gain of the equalizer when the EQ switch is “in”. It is generally used to compensate for level changes due to the equalization process, but can also allow the equalizer to adjust overall system level and gain structure.

  • Page 7: Feedback Control

    (all you will do is reduce system gain). The combination of a graphic equalizer for tone control and a parametric equalizer (such as the Ashly PQX-571 or PQX-572) for feedback control is highly recommended. ization for individual channels. If your console has chan- nel inserts, you can patch your graphic equalizer into a channel that’s being used for something important (like...

  • Page 8: Design Theory

    “Q” is easily set and remains con- stant, and the parts count is reasonable. there are several types of bandpass filters suitable for this job. Ashly uses a “Q” enhanced Wein-bridge filter. Because it is a “sym- metrical”...
  • Page 9 (they WILL overlap, but the response of one filter should not modify the response of another). Ashly uses an “interleaved” summing system where every other filter uses the same summing ampli- fier so that adjacent filters never share the same drive and feedback signals.

  • Page 10: Troubleshooting Tips

    Make sure you use good quality cable with connectors sol- dered firmly on the correct pin. When in doubt, get in touch with your Ashly dealer, or call the Ashly service department at 800-828-6308. 19.00 18.375...

  • Page 11: Specifications

    Dimensions ....... . 19"Lx3.5"(5.25")"Hx6"D Thank you for your expression of confidence in Ashly products. The unit you have just purchased is protected by a five-year warranty.

  • Page 12: Schematics

    Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer...
  • Page 13 Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer...
  • Page 14 Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer...
  • Page 15 Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer...
  • Page 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...

This manual is also suitable for:

Gqx-3101Gqx-3102

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