User manual ART 310

[. . . ] Keep the 310 away from excessive moisture. 1 Stereo 2-Way and Mono 3-Way Operation A stereo 2-way sound system is typically set up as follows: Separate high frequency (horn or full range) and low frequency (bass or sub) cabinets are used for each side (left and right) of the sound system. The crossover is used to split each side of the stereo signal into two frequency bands which will feed separate power amplifiers. This arrangement accomplishes two things: it allows the proper frequencies to be routed to the proper speaker cabinets and it allows the amplifier to produce power more efficiently to the speakers it is driving. A 3-way sound system is typically set up as follows: Separate high frequency (horn), mid frequency (mid or full range) and low frequency (bass or sub) cabinets are used for each side (left and right) of the sound system. [. . . ] These controls are used to set the output levels to the next piece of equipment connected to the 310. (In most cases this would be power amplifiers. ) There is no gain associated with these controls - only attenuation. In most cases you will use the 310 with the output controls set fully clockwise (at their "0" setting. ) If you find that you are overdriving the inputs of your Input and Output Connections The XLR input and output connections are balanced and follow the AES standard for wiring: Pin 1 = Ground, Pin 2 = Hot (+), Pin 3 = Cold (-). The input and output jacks are labeled for stereo 2-way and mono 3-way use. For stereo two-way usage, follow the connections labeled one (1) and two (2). For mono three-way usage, follow the connections labeled Input, Low, Mid, High. 2 3 amplifiers, you can turn down the output levels feeding the amplifier. Additionally, you can use the output level controls to balance the level between the highs and lows in your system. Range Switch The Range switch is used to set the frequency range of the Frequency control. In its "out" (x1) position the frequency range is variable from 80Hz - 920Hz, as is printed on the panel. In its "in" (x10) position the frequency range is variable from 800Hz - 9200 kHz. When used as a 2-way crossover, the Range switch will probably be used in its "out" position. When used as a 3-way crossover the Range switch for Channel One (now the low/mid crossover point) will probably be used in its "out" position while the Range switch for Channel Two (now the mid/high crossover point) will probably be used in its "in" position. Never change the frequency range switches (from x10 to x1 position - or vice versa) with the crossover passing audio signals. Frequency Control Each channel of the 310 has a Frequency control which sets the crossover point for the high and low frequencies. All frequencies below the set frequency will be sent to the Low output and all frequencies above the set frequency will be sent to the High output. When used as a 3-way crossover the Frequency control for Channel One is used to set the low/mid frequency point. The Frequency control for Channel Two is used to set the mid/high frequency point. Operating Instructions The 310 crossover's intended use is to split the frequency of the input signal into two (when used as a 2-Way crossover) or three (when used as a 3-Way crossover) separate signals which are then sent to amplifiers in a sound system. When used as a 3-way crossover you must follow the labeling for 3-way operation of the controls. 3-way front-panel controls (reading from left to right): Channel One controlsInput Level - The mono input level control Low Mute - Low output mute Low Output Level Control - The low output level control Frequency Range Switch and Control - low/mid crossover point High Mute - not used High Output Level Control - not used Channel Two controlsInput Level - not used Low Mute - Mid output mute Low Output Level Control - The mid output level control Frequency Range Switch and Control - mid/high crossover point High Mute - High output mute High Output Level Control - High output level control Signal Flow The following is just a guideline. In most situations, the crossover is the last piece of equipment in the signal chain before the power amplifiers. Signal flow is as follows: From the output of the mixer to an equalizer (Sometimes, for system protection, a limiter is placed between the mixer outputs and the equalizer, or after the equalizer. ) From the equalizer to the crossover. Set all the levels controls to their full counter-clockwise position (off. ) 2. [. . . ] Output level: +21dBu @ <0. 05% THD 20-20kHz Maximum Gain: +4dB Frequency Response: 10Hz to 20kHz, +0/-1. 5 dB THD + Noise: <0. 05% (20Hz to 20kHz) Hum and Noise: <-95dB (20Hz to 20kHz) Av=0dB, fc=800Hz Signal to Noise Ratio: 118dB Power: Size: Weight: 95-130VAC, 50/60Hz, 3 VA 190-250VAC, 50Hz, 3 VA 1. 75"H x 19" W x 8. 5" D 4. 5lbs. (2. 5kg) Warranty and Service Information Limited Warranty Warranty service for this unit will be provided by Applied Research and Technology, Inc. (A R T) warrants to the original purchaser that this product is free from defects in workmanship and materials for a period of one year from the date of purchase. A R T will, without charge, repair or replace, at its option, defective product or component parts upon prepaid delivery to the factory service department or authorized service center, accompanied by proof of purchase date in the form of a valid sales receipt. [. . . ]