Electro-Voice HP9040 User's Manual
Contents
1. Qo 9 48 ON AXIS 5 10 ie Se s i Lu 20 o DD L 5 ra ig 20 6 EI 0 Z PES Oe D Hg 30 Ecke din g 5 ani RA 5 a aoe o 400 o 1509 55 FREQUENCY IN HZ HORIZONTAL O VERTICAL A s 60 FIGURE 4 6 dB Down Beamwidth versus Frequency B 8 5683883 of FFF g FIGURE 2 Horizontal Off Axis Response NUMBERS INDICATE SPECIFIC R VALUES 0 0 dB 100 ON AXIS 5 5 20 0 Q a 4 109 TON Z E S10 10 So gt 20 5 O W W c T a 1 o 2 B 8 8883883 B FIR g F 30 o FREQUENCY IN HERTZ FIGURE 5 Directivity versus Frequency 3 8 583887 F TOR gg F FIGURE 3 Vertical Off Axis Response D dB 1kHz 800Hz 2 5kHz 2kHz 6 3kHz 5kHz 16kHz 12 5kHz HORIZONTAL VERTICAL Er ui 8 DRE T WRS j J 630Hz 1 6kHz 4kHz SE pue mg LIX 7 1 25kHz 3 15kHz 500HZ A 419 SEP SA b P FIGURE 6 Polars 10kHz 8kHz Scale is 5dB per division frequency The horizontal beamwidth is main tained at 90 20 20 over the range 400 Hz to 20 kHz Vertical beamwidth is maintained at 40 209 10 over the range 500 Hz to 20 kHz FREQUENCY RESPONSE ON AND OFF AXIS The one third octave frequency response of the HP9040 at various on and off axis angles was derived from the accompanying polars and i2. constant directivity horn It offers economy of space where its geometry is just big enough for the job The horizontal angle s controlled over a frequency range of 400 Hz to 20 kHz and the vertical angle is controlled from 500 Hz to 20 kHz both with unusual precision and adherence to the intended angle Furthermore excellent loading is maintained to a low frequency of 500 Hz The HP horns represents the latest development in CD horn design employing the same principles which EV engineers developed and used to design the world s first true constant directivity horns in 1974 The flat front design makes the HP9040 suitable for all modern boxed and clustered systems A unique lightweight integral fiberglass and zinc construction gives acoustical and mechanical advantages see Construction section Lastly a special vaned waveguide throat detail gives the HP9040 unusually good high frequency control vertically when compared to similar 2 inch throat horn designs 1 Patent pending 66 04 cm 47 63 cm 28 00 10 12 holes 714 cm 281 in diameter 18 75 in 3 81 cm 9 37 in c 79 38 cm 31 25 in 5c Q 26 oN am 60 46 cm 24 00 in Re a ine 67 95 cm 80 82 cm 26 75 in 31 82 in FIGURE 1 Dimensions p o E 4 holes 714 cm 281 in diameter on 10 16 cm 4 00 in diameter bolt circle 81 28 cm 32 00 in 12 70 cm 5 00 in
3. SPECIFICATIONS The following specifications are in accordance with or exceed the AES Recom mended Practice for Specification of Loudspeaker Components Used in Profes sional and Audio Sound Reinforcement AES2 1984 ANSI 84 26 1984 Horizontal Beamwidth 909 4 209 20 6 dB 400 Hz to 20 kHz Vertical Beamwidth 409 4209 109 6 dB 500 Hz to 20 kHz Directivity Factor R Q 12 1 average 500 Hz to 20 kHz Directivity Index D 10 8 dB 4 1 4 1 6 10 log Ry average 500 Hz to 20 kHz Usable Lower Frequency Limit 500 Hz Construction Polyester resin and glass fiber laminate integrally molded to a die cast zinc throat section This hybrid construction assures a rigid driver mount accurate loss free throat wave transmission and low total weight compared to horns of similar size Mechanical Connection of Driver Bolt on standard 2 diameter throat 5 diameter mounting flange and four clearance holes for 44 bolts on a 4 diameter bolt circle Hecommended Drivers DH1 DH2 Dimensions 67 9 cm 26 8 in 81 3 cm 82 0 in 80 6 cm 31 8 in Weight 9 1 kg 20 0 Ib Shipping Weight 14 1 kg 31 0 Ib R and D vs Frequency one third octave bandwidths Freq Hz Rs D dB Freq Hz Ro D dB Eleciro Voice a MARK IV company DESCRIPTION The Electro Voice model HP9040 is a wide range flat front high frequency
4. s displayed in Figure 2 and Figure 3 All curves are referenced to the on axis level These responses illustrate the curves one would get with a real time spectrum analyzer at the different angles if the horn driver were equalized flat on axis in an anechoic environment POLAR RESPONSE The directional characteristics of the HP9040 with driver attached were measured by running a set of horizontal vertical polar responses in EV s large anechoic chamber at each one third octave center frequency The test signal was one third octave pseudo random pink noise 1 0 Hz repetition rate and the bottom angle is the vertical beamwidth ARCHITECTS AND ENGINEERS SPECIFICATIONS The horn shall be of the constant directivity type It shall produce a horizontal beamwidth 6 dB down angle of 90 degrees deviating no more than 10 degrees from this angle over the frequency range 400 to 2 000 Hz It shall produce a vertical beamwidth of 40 degrees deviating no more than 10 degrees from this angle over the frequency range 1 500 to 20 000 Hz in addition it shall provide useful acoustic loading at all frequencies above 500 Hz The horn shall be of hybrid fiberglass and zinc construction The driver mounting flange and initial throat section shall be constructed of die cast zinc and shall be integrally laminated into the fiberglass portion of the horn The horn shall possess a throat of 4 92 cm 1 94 in diameter and its flange
5. shall be provided with four 4 20 clearance bolt holes on a 10 2 cm 4 0 in circle for the mounting of the compression driver The horn shall be to finish appearance items burned coils or malfunction due to abuse or operation under other than specified conditions including cone and or coil damage resulting from improperly designed enclosures 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 service agencies will void this guarantee A list of authorized warranty service agencies 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 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 ELECTRO VOICE INC 600 Cecil Street Buchanan Michigan 49107 MANUFACTURING PLANTS AT W BUCHANAN Mi lil NEWPORT TN W SEVIERVILLE TN W OKLAHOMA CITY OK ll GANANOQUE ONT Part Number 530635 615 Otlectro Voice Inc 1991 li Litho in U S A pata 71 MARK IV company
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