Telex INC-8AT8 User's Manual
Contents
1. long term average or continuous level which our ears interpret as loudness but also short duration peaks which are many times higher than the average just like actual program The long term average level stresses the speaker thermally heat The instantaneous peaks test mechanical reliability cone and diaphragm excursion Note that the sine wave test signals some times used have a much less demanding peak value relative to their average level In actual use long term average levels exist from several seconds on up but we apply the long term average for eight hours adding another extra measure of reliability Specifically the INC 8A is designed to withstand the power test described in EIA Standard RS 426A The EIA test spectrum is applied for eight hours To obtain the HUM WIT huki PT T E PT 200 soo 1000 2000 s000 100009 20000 EENIA A N SPL in dB IMPEDANCE IN OHMS s 2000 5 10000 20000 20 30 so FREQUENCY IN HERTZ FREQUENCY IN HERTZ FIGURE 1 Axial Frequency Response 1 Watt 1 Meter FIGURE 2 Input Impedance vs Frequency FIGURE 3 INC 8A Polar Response in 1 5 11 Sealed Box 4V RMS of h Octave Band Limited Noise in Anechoic Environment 10 Feet on Axis 5 dB per division 8 DIRECTIVITY FACTOR Re NUMBERS INDICATE SPECIFIC Re VALUES BEAMWIDTH IN DEGRE2. power 60 watts peak of shaped white noise signal for eight hours per EIA Standard RS 426A The INC 8A4T is provided with a transformer that offers a selection of 0 5 1 2 and 4W delivered to the loudspeaker system The INC 8A8T is provided with a transformer that offers a selection of 1 2 4 and 8W delivered to the loudspeaker system DIRECTIONAL PERFORMANCE The directional characteristics of the INC 8A in a 1 5 cubic foot vented enclosure were measured by running a set of polar responses in EV s large anechoic chamber The test Elecio Voice a MARK IV company INC 8A INC 8AT4 INC 8AT8 Wide Range Coaxial Speaker signal was s octave band limited pseudo random pink noise centered at the ISO standard frequencies indicated in Figure 3 Additional typical data is provided in Figures 4 and 5 which indicate 6 dB down beamwidth versus frequency and directivity factor respectively for an INC 8A in the test enclosure POWER HANDLING TEST To our knowledge Electro Voice was the first U S manufacturer to develop and publish a power test closely related to real life condi tions First we use a random noise input signal because it contains many frequencies simultaneously just like real voice or instrument program Second our signal contains more energy at extremely high and low frequencies than typical actual program adding an extra measure of reliability Third the test signal includes not only the overall
3. the product will be repaired or replaced at our option without charge The product will be returned to the customer prepaid Exclusions and Limitations The Limited Warranty does not apply to a exterior finish or appearance b certain specific items described in the individual product line statement s below or in the individual product data sheet or owner s manual malfunction resulting from use or operation of the product other than as specified the product data sheet or owner s manual d malfunction resulting from misuse or abuse of the product or e malfunction occurring at any time after repairs have been made to the product by anyone other than Electro Voice or any of its authorized service representatives Obtaining Warranty Service To obtain warranty service a customer must deliver the product prepaid to Electro Voice or any of its authorized service representatives together with proof of purchase of the product in the form of a bill of sale receipted invoice list of authorized service representatives is available from Electro Voice at 600 Cecil Street Buchanan MI 49107 616 695 6831 and or Electro Voice West at 8234 Doe Avenue Visalia CA 93291 209 651 7777 Incidental and Consequential Damages Excluded Product repair or replacement and return to the customer are only remedies provided to the customer Electro Voice shall not be liable for any incidental or consequential damages includ
4. ES DIRECTIVITY INDEX Di dB 1 500 2000 5000 10000 20000 FREQUENCY 600 1000 5000 10077 FREQUENCY Hz FIGURE 4 INC 8A Beamwidth vs Frequency FIGURE 5 INC 8A Directivity Factor and in 1 5 ft Sealed Box Directivity Index vs Frequency 1 5 ft Sealed Box LINE VOLTAGE 25V 70 7V TABLE 1 Rating of Secondary Taps spectrum the output of a white noise generator white noise is a particular type of random noise with equal energy per band width in Hz is fed to a shaping filter with 6 dB per octave slopes below 40 Hz and above 318 Hz When measured with the usual constant percentage bandwidth analyzer one third octave this shaping filter produces a spectrum whose 3 dB down points are at 100 Hz and 1200 Hz with a 3 dB per octave slope above 1200 Hz This shaped signal is sent to the power amplifier with the continu ous power set at 15 watts into the EIA equivalent impedance 10 0 volts true RMS Amplifier clipping sets instantaneous peaks at 6 dB above the continuous power or 60 watts peak 20 0 volts peak This procedure provides a rigorous test of both thermal and mechanical failure modes RECOMMENDED CONNECTIONS The INC 8A is a nominal 8 ohm impedance loudspeaker with a 15 watt input capability However it is also available with transformer inputs for both low and high power applica tions The INC 8AT4 utilizes the TM4 4 watt 25 70 7 100 volt univ
5. SPECIFICATIONS Frequency Response 85 18 000 Hz 5dB See Figure 1 Power Handling 15 watts EIA RS 426A impedance Nominal 8 ohms Minimum 6 ohms 8 kHz Sound Pressure Level at 1 Meter 1 Watt Input 200 4 000Hz Average 96 dB Voice Coil Diameter 2 54 cm 1 00 in Magnet Weight 0 32 kg 0 72 Ib Magnet Material Barium ferrite Flux Density 1 2 Tesla Speaker Frame 22 ga stamped steel Color Frame Black Dimensions INC 8 series Diameter 20 6 cm 8 1 in Height 7 1 cm 2 8 in Net Weight INC 8A 1 3 kg 2 8 Ibs INC 8A4T 1 4 kg 3 1 Ibs INC 8A8T 1 8 kg 4 0 Ibs Shipping Weight INC 8A 1 5 kg 3 3 Ibs INC 8A4T 1 6 kg 3 6 Ibs INC 8A8T 2 0 kg 4 5 165 Transformer Input INC 8A4T and INC 25 70 7 100 voit line DESCRIPTION The Electro Voice INC 8A INC 8A4T and INC 8A8T loudspeaker systems are high quality 8 inch full range coaxial loudspeakers for distributed sound systems The dual magnet construction allows each speaker to be structurally magnetically electrically and mechanically independent of the other The INC 8 series utilize a single section crossover network centered at 3kHz and providing 6dB of attenuation for the tweeter They provide wide dispersion high efficiency ease of installation and wide range reproduction of music or voice To insure long term reliability in installations the INC 8 series are designed to handle 15 watts continuous
6. ersal line matching transformer with power taps ranging from 0 5 to 4 watts The power taps are indicated in Table 1 The INC 8AT8 utilizes the TM8 8 watt 70 vOH transformer with power taps ranging from 1 to 8 watts ARCHITECT S AND ENGINEER S SPECIFICATIONS INC 8 SERIES COAXIAL LOUDSPEAKERS The loudspeaker shall be a coaxial type with a 8 inch low frequency cone and a high temperature voice coil assembly coaxially mounted with a wide dispersion cone tweeter The coaxial loudspeaker shall meet the following criteria EIA power rating shall be 15 watts of band limited pink noise 85 Hz to 18 kHz 6 dB crest factor Frequency response uniform from 85 Hz to 18 kHz Pressure sensitivity 96 dB SPL at 1 meter 94 dB at 4 feet on axis with one watt of band limited pink noise from 500 Hz to 3 kHz ref 20 uPa Minimum impedance 6 0 ohms The loudspeaker shall be 8 13 in 20 65 cm in diameter and _in _ cm deep and shall weigh Ibs _kg The coaxial loudspeakers shall be the Electro Voice models INC 8A INC 8A4T with 4W transformer and INC 8A8T with 8W trans former WARRANTY Limited Electro Voice products are guaranteed against malfunction dus to defects in materials or workmanship for a specified period as noted in the individual product line statement s below or in the individual product data sheet or owner s manual beginning with the date of original purchase If such malfunction occurs during the specified period
7. ing without limitation injury to persons or property or loss of use Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you Other Rights This warranty gives you specific legal rights and you may also have other rights which vary from state to state Electro Voice Speakers and Speaker Systems are guaranteed against malfunction due to defects in materials or workmanship for a period of five 5 years from the date of original purchase The Limited Warranty does not apply to burned voice coils or malfunc tions such as cone and or coil damage resulting from improperly designed enclo sures Electro Voice active electronics associated with the speaker systems are guaranteed for three 3 years from the date of original purchase Additional details are included in the Uniform Limited Warranty statement Service and repair address for this product Electro Voice Inc 600 Cecil Street Buchanan Michigan 49107 Specifications subject to change without notice
Download Pdf Manuals
Related Search