Instruction/ maintenance manual of the product HD 131 Art
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HD131 SINGLE CHANNEL 31 BAND 1/3 OCTAVE GRAPHIC EQUALIZER HD215 DUAL CHANNEL 15 BAND 2/3 OCTAVE GRAPHIC EQUALIZER HD231 DUAL CHANNEL 31 BAND 1/3 OCTAVE GRAPHIC EQUALIZER.
2 IMPORTANT SAFETY INSTRUCTION – READ FIRST This symbol, whenever it appears, This symbol, wherever it appears, alerts you alerts you to the presence of uninsulated to important operating and maintenance dangerous voltage inside the enclosure-voltage instructions in the accompanying literature.
3 The new ART HD-Series of Precision Graphic Equalizers have been designed and engineered to exceed extremely high standards for audio performance and functionality.
4 GENERAL INFORMATION Congratulations on the purchase of y our new ART equalizer. This profe ssional equalizer is perfect for virtually any audio application wher e frequency tailoring is needed.
5 EUROBLOCK CONNECTIONS Insert the wires, and then snug down with the set screw. The entire barrier strip can be removed for quick service without disconnec ting the individual wires. SIGNAL LEVELS Signal levels from -10dBu to +4dBu are cons idered normal with maximum levels of approximately +22dBu balanced or +16dBu unbalanced.
6 OPERATING INSTRUCTIONS Before starting to equalize your sound system there is some information you should know and proce- dures you should follow. Your equalizer is equipp ed with a bypass switch.
7 FRONT PANEL CONTROLS 1. POWER SWITCH To turn the equalizer ON or OFF, press the upper or lower portion of this button. CAUTION: Always turn on your equalizer BEFORE your power amplifie rs are turned on, and always turn off your equal- izer AFTER your power amp lifiers have been turned off.
8 Clip Indicator: - This red LED illuminates if any secti on of the equalizer is near clipping. Oc- casional flickering of this LED is acceptable, but if it remains on more than intermittently you sho.
9 REAR PANEL CONNECTORS & CONTROLS 8. POWER CORD This cord is used to connect the AC power source to your equalizer. CAUTION: Equipment for USA installation includes a power cord with a thre e pin polarized plug. DO NOT REMOVE THE CENTER GROUNDING PIN.
10 11. INPUT/OUTPUT CONNECTORS 1/4 TRS The TRS (Tip Ring Sleeve) connector is balanced and wired as Tip = High (+), Ring = Low (-), and Sleeve = Ground. XLR The XLR input connector is balanced and wired as Pi n 2=High (+), Pin 3=Low (-), and Pin 1=Ground.
11 APPLICATIONS Graphic equalizers may be used wherever modification of the frequency contour of a sound system is needed. A graphic equalizer is a solution to any number of sound problems or creative urges.
12 WARRANTY INFORMATION Limited Warranty Applied Research and Technology will provide warranty and service for this unit in accordance with the following warrants: Applied Research and Technology, (A .
13 SERVICE The following information is provided in the unlik ely event that your unit requires service. 1) Be sure that the unit is the cause of the problem. Check to make su re the unit has power supplied, all cables are connecte d correctly, and the cables them selves are in working condi- tion.
14 SPECIFICATIONS: EQUALIZER Bands 2 x 15, 2/ 3 Octave, ISO Spacing (HD215) 1 x 31, 1/3 Octave, ISO Spacing (HD131) 2 x 31, 1/3 Octave, ISO Spacing (HD231) Type / Accuracy Constant Q, 3% Center Freque.
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16 APPLIED RESEARCH & TECHNOLOGY 215 TREMONT STREET ROCHESTER, NEW YORK 14608 USA (585) 436-2720 – Voice (585) 436-3942 – Fax www.artproaudio.com E-mail: cserve@artproaudio.
An important point after buying a device Art HD 131 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Art HD 131 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 Art HD 131 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Art HD 131 you will learn all the available features of the product, as well as information on its operation. The information that you get Art HD 131 will certainly help you make a decision on the purchase.
If you already are a holder of Art HD 131, 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 Art HD 131.
However, one of the most important roles played by the user manual is to help in solving problems with Art HD 131. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Art HD 131 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
