Related Manuals for Ashly DPX-100
Summary of Contents for Ashly DPX-100
- Page 1 DPX-100 Graphic Equalizer Compressor/Limiter Operating Manual ASHLY AUDIO INC. 847 Holt Road Webster, NY 14580-9103 Phone: (585) 872-0010 Toll-Free: (800) 828-6308 Fax: (585) 872-0739 Internet: www.ashly.com...
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Page 2: Table Of Contents
Operating Manual - DPX-100 Graphic Equalizer - Compressor/Limiter INTRODUCTION ............3 UNPACKING . -
Page 3: Introduction
Operating Manual - DPX-100 Graphic Equalizer - Compressor/Limiter 1. INTRODUCTION The Ashly DPX-100 combines a 15 band graphic equalizer and full function peak compressor/limiter in a single rack space product. Both equalizer and compres- sor/limiter can be used as stand-alone processors, or can be automatically chained together with a back panel switch. -
Page 4: Mechanical Installation
An oval head or flat head screw with a plastic countersink washer is pre- ferred to protect the finish of the DPX-100 under the screw. This unit is housed in a rugged steel case and will tolerate moderate abuse. -
Page 5: Compressor/Limiter Controls
Operating Manual - DPX-100 Graphic Equalizer - Compressor/Limiter 6. COMPRESSOR/LIMITER CONTROLS 6.1 GAIN The Gain control is used to adjust incoming sig- nal level to the VCA circuit. It is always active, so switching out the limiter function has no effect on this control. -
Page 6: Output Level
Operating Manual - DPX-100 Graphic Equalizer - Compressor/Limiter the double time constant, release from gain reduction af- ter a brief transient is always fast, with a slower release after a sustained overdrive. 6.6 OUTPUT LEVEL Output level control is provided to fully cut or restore up to 18 dB of system gain. -
Page 7: Inputs And Outputs
70 volt distributed system pro- cessor, mixing console channel insert, and frequency sen- sitive limiting, to name a few. In most cases, the DPX-100 should be the last device before the power amp or cross- over, or right before a recording device or transmitter. -
Page 8: Compressor/Limiter Applications
Operating Manual - DPX-100 Graphic Equalizer - Compressor/Limiter equalizer effectively, you need to translate your idea of the tone you want to produce into a range of numerical frequencies. This is simple after a little practise. Here are a few references which are useful for starting points: - Very low bass (the “wind”... -
Page 9: Special Effects
The Ashly DPX-100 can turn this procedure into a fast, painless job, eliminating loud feedback levels and the possibility of speaker or ear damage. - Page 10 The solution is frequency-dependent limiting, which is easily accomplished with the DPX-100. By in- serting an equalizer into the Detector Patch point and boosting the equalizer at high frequencies in the vicinity of the sibilant, the limiter’s detector circuit becomes more...
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Page 11: Design Theory
“Q” is easily set and remains constant, and the parts count is reasonable. there are sev- eral types of bandpass filters suitable for this job. Ashly uses a “Q” enhanced Wein-bridge filter. Because it is a symmetrical design using matched tuning components, the “Q”... - Page 12 Operating Manual - DPX-100 Graphic Equalizer - Compressor/Limiter out of an audio system, you have to keep your standard operating level as high as possible without risking distor- tion. GAIN RIDING One solution to the noise vs. distortion trade-off is to keep your hand on the level control and manually adjust gain to suit the program.
- Page 13 Operating Manual - DPX-100 Graphic Equalizer - Compressor/Limiter signal before the gain control FET and then amplify it again. Of course this results in less than ideal noise per- formance and imposes a frustrating trade-off: less noise = more distortion.
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Page 14: Block Diagram
Operating Manual - DPX-100 Graphic Equalizer - Compressor/Limiter 10. BLOCK DIAGRAM INPUT GAIN 15 BAND EQ HPF In/Out CHAIN LIMITER INPUT INPUT/OUTPUT METERS GAIN GAIN REDUCTION DISPLAY RATIO DETECTOR ATTACK CIRCUIT RELEASE 11. Equalizer Troubleshooting Tips No Audio Output Check AC power - is the pilot light on? -
Page 15: Warranty Information
12. WARRANTY INFORMATION Thank you for your expression of confidence in Ashly products. The unit you have just purchased is pro- tected by a five-year warranty. To establish the warranty, be sure to fill out and mail the warranty card attached to your product. -
Page 16: Dimensions
Operating Manual - DPX-100 Graphic Equalizer - Compressor/Limiter 14. DIMENSIONS Dimensional Drawing for DPX-100... - Page 17 847 Holt Road Webster, NY 14580-9103 Phone: (716) 872-0010 Fax: (716) 872-0739 Drawn By 11:44:50 Size Print Date Sheet # James B Franks A->B @ 157% TO EVEN 3-May-2002 S:\Engineering\CLIENT98\1551\10s1551c-1.Sch DPX-100 MINI-EQ + COMPRESSOR/LIMITER APPROVED: Dwg # 10S1551 47P3151 Rev.
- Page 18 $VKO\ $XGLR ,QF 847 Holt Road Webster, NY 14580-9103 JP39/2 Phone: (716) 872-0010 Fax: (716) 872-0739 Drawn By 11:43:56 Size Print Date Sheet # James B Franks A->B @ 157% 3-May-2002 S:\Engineering\CLIENT98\1551\10s1551c-2.SCH DPX-100 MINI-EQ + COMPRESSOR/LIMITER APPROVED: Dwg # 10S1551 JP24 Rev.
- Page 19 847 Holt Road Webster, NY 14580-9103 Phone: (716) 872-0010 Fax: (716) 872-0739 Drawn By 11:42:28 Size Sheet # Print Date James B Franks A->B @ 157% 3-May-2002 S:\Engineering\CLIENT98\1551\10s1551c-3.SCH DPX-100 MINI-EQ + COMPRESSOR/LIMITER APPROVED: Dwg # 10S1551 +6(Y) SIG(G) -20dBu Rev.
- Page 20 Operating Manual - DPX-100 Graphic Equalizer - Compressor/Limiter ASHLY AUDIO INC. 847 Holt Road Webster, NY 14580-9103 Phone: (585) 872-0010 Fax: (585 872-0739 Toll Free (800) 828-6308 Internet: www.ashly.com 2002 by Ashly Audio Corporation. All rights reserved worldwide. Printed in USA 05/02...