User manual ELECTRO-VOICE BB6 DATASHEET

[. . . ] The cardioid polar pattern is precisely controlled and is highly effective in suppressing feedback without coloration of sound. Power for the RE90H is obtained from any phantom source supplying 9 to 52 volts. The RE90H is furnished with 25 feet of black (RE90H) or white (RE90WH) miniature braided shielded cable. The design of the cable ensures the microphone's horizontal position will be held stable without the need for fish-line tethering. [. . . ] The design of the cable ensures the microphone's horizontal position will be held stable without the need for fish-line tethering. The RE90H is easily aimed at the performance with the supplied steel wire hanger and holding nut. The wire hanger attached to the microphone element and cable can be bent to aim the microphone in the vertical plane. To position the microphone on the horizontal plane, loosen the holding nut on the back of the microphone and slightly twist the microphone on the wire holder (clockwise rotation rotates the RE90H to the left; counterclockwise rotation rotates the RE90H to the right). Secure this position by tightening the holding nut. Note: For fixed installations, allow the microphone cable to hang for at least 24 hours so the cable can completely relax and establish a set. This allows the microphone to be accurately positioned over a choir, stage or orchestra. Application Notes When hanging one or more microphones to provide coverage for a choir, instrumental or theater group, the best microphone position for optimum sound quality and feedback control depends on many factors­sound system characteristics, construction of the au- ditorium or theater, and the size and nature of the performing group. Two general rules to observe for the best sound coverage are (1) microphone position and (2) the "3-to-1 rule. " The first rule is to suspend the microphone approximately two to three feet in front of the first row of performers and two to three feet higher than the heads of the last row of performers. The microphones are usually aimed to point at the last row of performers (see Figure 3). Any and all active electronics incorporated in these microphones are guaranteed against malfunction due to defects in materials or workmanship for a period of three (3) years from the date of original purchase. The Limited Warranty does not extend to cables, cable connectors, or switches. Additional details are included in the Uniform Limited Warranty statement. For warranty repair, service information, or a listing of the repair facilities nearest you, contact the service repair department at: 616/ 695-6831 or 800/685-2606. For technical assistance, contact Technical Support at 800/234-6831 or 616/695-6831, M-F, 8:00 a. m. Specifications subject to change without notice. RE90H/RE90WH Condenser Cardioid Hanging Microphone The microphone shall be a back-electret condenser type with a frequency response of 75 Hz to 15 kHz. The microphone shall have a cardioid polar pattern with a rear response which is typically 15 dB below the front response at 1. 0 kHz. The microphone shall have an output power level of -30. 4 dB, where 0 dB = 1 milliwatt per pascal, and output shall not be appreciably affected by the following temperature and humidity extremes: -29° to 74°C (-20° to 165°F) when the relative humidity is 0-50%; -29° to 57°C (-20° to 135°F) when relative humidity is 0-95%. The microphone shall have a nominal, balanced output impedance of 200 ohms when connected to its electronics module. The microphone shall have a low-gloss black finish (RE90H) or a low-gloss white finish (RE90WH). [. . . ] The microphone shall have an output power level of -30. 4 dB, where 0 dB = 1 milliwatt per pascal, and output shall not be appreciably affected by the following temperature and humidity extremes: -29° to 74°C (-20° to 165°F) when the relative humidity is 0-50%; -29° to 57°C (-20° to 135°F) when relative humidity is 0-95%. The microphone shall have a nominal, balanced output impedance of 200 ohms when connected to its electronics module. The microphone shall have a low-gloss black finish (RE90H) or a low-gloss white finish (RE90WH). The cable color shall match the transducer. [. . . ]