User manual DOD EQ

[. . . ] · The core which is colored blue must be connected to the terminal marked N or colored black. · The core which is colored brown must be connected to the terminal marked L or colored red. 2 EQ Series These units comply with the European "EMC Directive" for emissions and susceptability The power cord is terminated in a CEE7/7 plug (Continental Europe). The green/yellow wire is connected directly to the unit's chassis. If you need to change the plug, and if you are qualified to do so, refer to the table below. CONDUCTOR L N LIVE NEUTRAL WIRE COLOR Normal BROWN BLUE Alt BLACK WHITE GREEN E EARTH GND GREEN/YEL WARNING: If the ground is defeated, certain fault conditions in the unit or in the system to which it is connected can result in full line voltage between chassis and earth ground. [. . . ] So, boosting or cutting any band will affect a wider range of frequencies on the 2/3 octave equalizer. A 1/3rd octave equalizer is the most precise because you're working with a narrower frequency range per band or slider on the equalizer. To cover the entire audio range, you need 31 bands or sliders, which normally take up the entire width of a rack panel, and take some time to adjust properly. 4 EQ Series A high-resolution real time audio spectrum analyzer (such as DOD's RTA Series II) is a very useful tool when setting up a 1/3rd octave graphic equalizer to compensate for poor room acoustics, poor speaker response, or the deficiencies of an audio system. While the 2/3rds octave is not as precise as a 1/3rd, it takes far less time to equalize a signal with this unit, and allows more channels of EQ to be reached. The 2/3rds octave EQ allows you to quickly and easily modify a sound for use in music, recording, or sound reinforcement. DOD graphic equalizers offer both 1/3rd and 2/3rds octave models in stereo and 1/3 octave models in mono to meet any need. INSTALLATION Install the equalizer in a rack with the provided rack screws. Route the AC power cord to a convenient power outlet away from audio lines. Since the units draw a relatively small amount of current during idle, they can be left on continuously. DOD equalizers generate very little heat during operation and thus do not need to be specially ventilated or cooled. The units should not, however, be subjected to high temperatures for extended periods. Although the unit's chassis is shielded against radio frequency and electromagnetic interference, extremely high RF and EMI fields should be avoided. Only the 1/4" phone plug and the optional XLR connector inputs and outputs can be used for balanced or unbalanced connections. Using more than one input/output connector pair at a time can unbalance balanced lines, cause phase cancellation, short a conductor to ground, or cause damage to other equipment connected to the equalizer. EQ Series FOR BALANCED 1/4 " TSR PHONE PLUG CONNECTION - Wire the connectors as follows: Phone Plug tip ring sleeve Connection : high : low : ground 5 FOR 1/4" MONO PHONE PLUG OR RCA PHONO PLUG CONNECTION: Phone plug tip sleeve Connection : high : ground OPTIONAL XLR CONNECTORS - Optional XLR type connectors may be ordered installed in the units at the factory. These connectors allow both balanced and unbalanced connection to the equalizers, and are wired as follows: XLR Connector pin 1: pin 2: pin 3: Balanced Connection ground high low Unbalanced Connection ground high or hot ground Once the graphic equalizer has been installed and adjusted for the required equalization and level, an optional security panel can be installed to keep unauthorized persons from changing settings. 6 EQ Series APPLICATIONS DOD graphic equalizers can be used wherever modification of the frequency contour of a sound or sound system is needed. A graphic equalizer offers a solution to many common sound problems, both large and small. Also, creative experimentation on the part of the user can produce some nice results. SOUND REINFORCEMENT APPLICATIONS By routing the signal from the mixer to the main power amplifiers (or crossover), the overall frequency of the mix can be altered to do a number of things. Using a real time audio spectrum analyzer (such as DOD's RTA Series II), a calibrated microphone, and a pink noise generator, the audio system can be tuned to make the overall audio spectrum response of the sound system and the room environment flatter in frequency response. Greater gain-before-feedback characteristics can be achieved by turning up the sound system to the feedback point and attenuating the oscillating (ringing) frequency. Turn the system up to feedback again and attenuate the second oscillating frequency. Protection of amplifiers and speakers can be accomplished using the LOW CUT feature of the equalizer. Wind noise or dropped microphones can cause damage to the amps and/or speakers. However, by rolling off the extreme low frequencies, a measure of protection is added to the system without severely affecting the overall sound quality. [. . . ] The warranty registration card must be mailed within ten days after purchase date to validate this warranty. DOD warrants this product, when used solely within the U. S. , to be free from defects in material and workmanship under normal use and service. DOD Electronics liability under this warranty is limited to repairing or replacing defective materials that show evidence of defect, provided the product is returned through the original dealer, where all parts and labor will be covered up to a period of one year. The company shall not be responsible for any consequential damage as a result of the products use in any circuit or assembly. [. . . ]