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****** Page 1 ****** gleÉ)6Fcz€ ELECTRO-VOICE, INC. BUCHANAN, MICHIGAN Model X36 Specifications and Instructions Models x6, n, x425, X825, X36, X336, X2635 Crossover Networks Electro-Voice crossover networks are high-Q low insertion loss, frequency dis- criminatory filters designed for use in systems having a characteristic impedance of 16 ohms. All E-V crossovers are of the constant-K configuration. A basic advantage of the constant-K-type filter is that identical values of components may be used in both series and shunt arms; thus, identical phase rotation and transient response are insured on either side Of the crossover frequency. E-V crossovers are designated by the 3 db down point in the network frequency response curve. For example, the high-pass section of the X8 crossover is 3 db down at 800 cps, as is also the low-pass section. Attenuation in Electro-Voice networks takes place at the rate of 12 db per octave for h•section filters and 6 db per octave for 1,4-section networks. Because high-Q air-core inductors are used in these crossover networks, filter characteristics are maintained constant despite changes in average values of program level. Electro-Voice crossovers will safely handle up to 100 RMS watts. Since the average level of program material in home listening rarely exceeds 2 watts, the safety margin inherent in the design Of these units is indeed a large one. All Electro-Voice crossover networks are housed in drawn steel cans. Finish is gray and the component parts are potted in a thermoplastic asphalts SPECIFICATIONS Model Crossover X425 400 cps 16 ohms .8 db .3 db 1/4 section 6 db/oct. 41 ho 3% 41b 600 cps 16 ohms .6 db O db h section 12 db/oct. 2700 5•Y16 51/4 51b 800 cps 16 ohms .5 db O db h section 12 db/oct. 2700 411/16 3% 47/16 41b X825 cps 16 ohms .8 db .3 db 1/4 section 6 db/oct. 1350 37/16 3% 47/16 31b X36 3500 cps 16 ohms .75 db O db 1/4 section 12 db/oct. 2700 3% 21b X336 300 cps 3500 cps 16 ohms 1.5 db/.6 db O db h section X2635 200 cps 600 cps 3500 cps 16 ohms I .5 db/.6 db O db h section o o o Frequency Impedance Insertion Loss—Lo Hi Section Attenuation Phase Rotation Dimensions—Height De pth Width Shipping Weight 1/4 section (300 cps) 14 section (200 cps) 12 db/oct. 12 db/oct. 6 db/oct.(300 cps) 6 db/oct.(200 cps) 2700 1350 (300 cps) 55hg 43/16 51/4 91b 2700 1350 (200 cps) 61/16 51/4 MODEL X425 —The X425 crossover network is designed for use with most E-V woofers or coaxial drivers in an infinite baffle when it is desired to cross over to the mid-range from the bass driver at a lower frequency. MODEL X6— The X6 crossover network is designed for use with the Electro- Voice T25A or T IOA driver units and 61–11) Hoodwin diffraction horn. MODEL X8 X8 crossover network is designed for use with the Electro- Voice T25A or T IOA driver units and 8HD Hoodwin diffraction horn. The X8 is used in both the Aristocrat II and III systems, the Regency II and III systems, and the Empire II and III systems.
****** Page 2 ****** pa—l• Fig. 1 —Typical Single Network Wiring Diagram Fig. 2 Typical Cascaded Network Wiring Diagram 17.7 MED. COY Model xe MODEL X825 —The X825 crossover network is designed for use with the Electro- Voice T IOA driver unit and SHD Hoodwin diffraction horn. The X825 is Of 1/4 section and finds application in medium efficiency systems employing E-V 12BW, SP12B and T IOA drivers such as the Aristocrat I and IA, Regency I and IA and Empire I and IA. MODEL X36—The X36 crossover network is designed for use with the Electro- Voice T35 and T 35B Super-Sonax VHF driver units. MODEL X336 —The X336 crossover network is designed for use in the Electro- Voice Georgian 4-way loudspeaker system, Model 105. Frequencies below 300 cps are fed to the 15 WK low-frequency driver, the frequencies between 300 and 3500 cycles to the 848HF compound coaxial mid-range driver, and those above 3500 cps to the T 35 Super-Sonax VHF driver. MODEL X2635 —The X2635 crossover network is designed for use in the Electro• Voice Patrician and the Residence Entertainment Center. The X2635 uses a i/csection constant-K 200 cps network with IL-section networks for the higher frequencies. Because of the inherent high-frequency cutoff of the low-frequency horns used in both the Patrician and Residence Entertainment Center, rapid attenuation is not required in the low-frequency crossover. Typical applications of Electro-Voice networks are shown in Figures 1 and 2. Figure I illustrates a single crossover used to separate frequencies radiated by a T 35 or T35B Super-Sonax VHF driver, and a low-frequency or coaxial low- range speaker. Figure 2 is typical of a cascaded application in which two crossover networks are employed. It is not important in which order the crossovers are cascaded, the purpose of such an arrangement being merely to insure a pass band fre- quency response for the treble mid-range driver. Although these crossovers have been designed for use in 16•ohm systems, they may be employed in Other situations. For instance, if a 16-ohm unit is used in a system in which both the input and output impedances are 8 ohms, no appreciable shift in crossover frequency will be experienced, although the insertion loss of the crossover will be greater. In the case of reproducers with unequal im• pedances, the crossover should be connected to a 16-ohm source. As an example, if an 8-ohm woofer is used with a 16-ohm tweeter, the reproduction of bass will be favored; however, if the tweeter was an 8-ohm unit and the woofer 16 Ohms, then treble reproduction would be relatively louder. Complete instructions and information on the assembly of E-V drivers and systems are included with the individual driver units and packed with cach E-V enclosure. Schematic Diagrams uzs 13.28 Who. Model X8 MH. 2.84 MED. X025 – 13.26 MF. – 24.9 Model X825 and Model X425 .727M*H. Model X36 CßM. COM 10 LOLO g ELECTRO.VOICE, INC. 33 Model X2635 MICHIGAN 177 1.0 COMMON Model 1336 / BUCHANAN, Part No. 53361 Printed in U.S.A.
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