Electro-Voice CS15P User's Manual
Contents
1. a means to convert the small fluctuations in capacitance into a usable output voltage is needed The impedance converter provides this function and generally consisis of field effect transistor and its associated circuitry ARCHITECTS AND ENGINEERS SPECIFICATIONS The microphone shall be a condenser cardioid type The microphone shall have wide range uniform frequency response from 40 to 18 000 Hz Response at the front of the microphone at 600 Hz shall be nominally 25 dB greater than the response at the rear The microphone shail have an output of 45 dB 0 dB 1 10 dynes cm microphone shail have an electret diaphragm A 4 6 m 15 foot 2 conductor shielded brown rubber jacketed cable with a Switchcraft ASF connector installed in the microphone end shall be provided Low impedance connections shall be balanced line configuration The microphone shall accept a 141 dB SPL input while providing no greater than 1 THD output open circuit termination Dynamic range shall be 119 dB or greater Equivalent noise shall be less than 22 dB The case shall be machined steel Dimen sions shall be 176 mm 6 94 in long 27 mm 1 06 in diameter 19 mm 0 75 shank diameter and weight shall be 227 g 8 ounces A removable windscreen model 315A shall be provided along with a model 312A clamp Finish shall be fawn beige micomatte The Electro Voice Model CS15P condenser microphone is specified2. WARRANTY Limited Electro Voice Professional PL amp BK Series Microphones are guaranteed against malfunction from any cause for a period of two years from date of original purchase Also these microphones are guaranteed without time limit against malfunction in the acoustic system due to defects in workman ship and material Any active electronics incorporated in the microphone are guaranteed for three years from date of origina purchase for parts and labor against such malfunction If such malfunction occurs microphone will be repaired or replaced at our option without charge for materials or labor if delivered prepaid to the proper Electro Voice service facility Unit will be returned prepaid Warranty does not extend to finish appearance items cables cable connectors switches or malfunction due to abuse or operation under other than specified conditions nor does it extend to incidental or consequential damages Some states do not allow the exclusion or limitation of incidental or consequential damages so the above exclusion may not apply to you Repair by other than Electro Voice or its authorized warranty service agencies will void this guarantee A list of authorized warranty service centers is available from Electro Voice Inc 600 Cecil Street Buchanan MI 49107 AC 616 695 6831 or Electro Voice West 8234 Doe Avenue Visalia CA 93291 AC 209 651 7777 This warranty gives you specific legal rights and you may
3. also have other rights which vary from state to state Service and repair address for this product Electro Voice Inc 600 Cecil Street Buchanan Michigan 49107 Specifications subject to change without notice
4. steel case and rugged internal design enable the CS15P to withstand abuse The CS15P being a true cardioid microphone offers greatest rejection at 180 off axis directly to the rear of the microphone Like all other condenser Electro Voice a MARK IV company Model Sr kani Electret condenser Microphone cardicid microphones the CS15P is a single D cardioid Due to the proximity effect in all singie D cardigids the low frequency response of the CS15P is dependent upon the distance from the sound source to the microphone as illustrated in Figure 2 Maximum bass response is produced in close up use with the microphone one quarter inch from the sound source Figure 2A Minimum bass response is experienced at distances greater than 61 cm 24 in Figure 2C By working closer to the microphone than might otherwise be natural the human voice will sound more robust although intelligibility may be adversely affected OPERATING INSTRUCTIONS The CS15P condenser microphone requires a remote power supply in order to operate Power may obtained from a microphone input equipped with standard 48 V dc remote powering or from an accessory power supply piced in the line between the microphone and mixer input The Electro Voice AC24 power supply or the 59 battery supply are intended for this purpose See the PE15A Engineering Data Sheet for further details SPECIAL NOTE MAINTENANCE INSTRUCTIONS This elec
5. RET PRINCIPLE The generating element of a condenser microphone is a Capacitor with one of its plates being the microphone s moving diaphragm the other plate being the stationary backplate When a charge is applied to the diaphragm and changes in air pressure move the diaphragm an output voltage is generated All condenser microphones require a charge or difference of potential between diaphragm and backplate The early condenser microphones achieve this by employing an external dc power source of approximately 200 volts This system at best was awkward to use Today condenser microphones operate from voitages of 48 volts and less There are two methods of utilizing these lower voltages One method increases the input voltage by employing some sophisticated electronic circuitry Another method is to apply the 48 voits directly to the diaphragm thus making the dynamic range and sensitivity of the microphones totally dependent upon the Stability of the 48 volt supply Still other methods have been devised In recent years materials and techniques have been developed which allow placing a permanent charge on the condenser microphone capacitor element diaphragm This ability to permanently charge a material is known as the Electret Phenomenon With a permanent charge on the diaphragm the only voltage now needed is to power the impedance converter Because the output of any condenser microphone element is extremely high impedance
6. SPECIFICATIONS Element Electret condenser Frequency Response 40 18 000 Hz Poiar Pattern Cardioid Impedance 150 ohm nominal balanced Element Capacitance 27 pF Output Level 45 dB ref 0 dB 1 mW 10 dynes cm EIA Sensitivity Rating 137 dB Self Noise 1 4 uV A weighted S N Ratio 72 dB weighted Dynamic Range 119 dB 141 dB input open circuit Equivalent Noise Level Less than 22 dB re 0002 dyne crn2 weighted Maximum SPL at 1 THD 141 dB SPL Case Material Steel Dimensions 176 mm 6 94 in long 27 mm 1 06 in maximum diameter 19 mm 0 75 in snank diameter Weight 227 grams 8 oz Finish Fawn beige micomatte Cable 4 6 m 15 ft two conductor shielded brown rubber jacketed cabie with Switchcraft connector Operating Voltage 8 to 50 V de Standard 48 V remote power accepted see 15 data sheet Current Required 3 to 12 mA depending upon supply voltage Accessories Included 315A windscreen 312A stand clamp Optional Accessories AC24 power supply BS9 battery supply CA10 attenuator 307 shock mount 310A stand clamp 313A shock mount 340 security clamp DESCRIPTION AND APPLICATIONS The Electro Voice Model CS15P is a professional remotely powerable electret condenser cardioid microphone designed especially for recording broadcast and sound reinforcement applications where the smooth wide range response ot a studio microphone is desired The machined
7. tret condenser microphone shouid not be left in the open sun or other hot environments where temperatures may approach or exceed 130 degrees Fahrenheit U S Patent No 3 944 756 9 mm 27 mm 8 1 06 176 6 94 az Cea FIGURE 1 Dimensions 1 ani Boe FIGURE 2 Frequency Response ant Borr axisL LLN Keluar 5 888885 Bo 2 8 FREQUENCY HERTZ Z s SSS SN N T Buy FIGURE 3 Polar Response SEA SE N for any period of time Following this suggestion will prolong the life of the generating element and insure reliable troubie free performance over the years CS15P AND DISTORTION Many times microphones are unjustly accused of causing distortion More often than not the mixer preamp is the problem Mixer or console preamps are designed to Operate with a nominal input level of several millivolts When this nominal input level is exceeded the preamp quickly goes into clipping thus causing distortion Both Gynamic and condenser microphones are capable of delivering over one volt to the mixer input at less than 15 percent total harmonic distortion Preamps over the years traditionally have been designed with dynamic microphones in mind With condenser microphones having output levels 10 to 20 dB greater than dynamics caution should be exercised so as not to overload the mic preamp ELECT
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