Electro-Voice PI100 User's Manual
Contents
1. 522882 4 y FEOLENCY WW HERTZ FIGURE 4 Directivity vs Frequency Whole Space anechoic Constant Directivity Speaker System The crossover frequency and speaker component geometries have been care fully selected so that the directional characteristics of the woofer and Direktor match at the crossover frequency approximately 100 degrees circular coverage patterns for each to create a special system type the constant directivity system At higher frequencies the horizontal and vertical coverage pattern remain essentially constant Response within the 100 x 100 rated coverage angle is uniform which means dependable audience coverage without hot spots or dead zones at certain frequencies The 100 x 100 dispersion characteristic permits this small system to be used horizon tally or vertically to aesthetically best suit the environment it is placed in without basically changing the coverage angies The controlled directivity of the high and low frequency transducers also eliminates response irreqularities caused by diffraction off enclosure edges and in combination with an essentially flat on axis frequency response produces a total acoustic power output that is uniform with frequency FREQUENCY RESPONSE The combination of a 12 inch woofer wide bandwidth high frequency Super Dome tweeter plus Direktor and an equalized crossover results in the wide and smooth overall response shown in Figure2. x 1 2 HEX HD CAP SCREW WCB 1 BRACKET SCREW EYE HOOK 3 PLACES 5 HOOK CHAIN S HOOK 1 4 20 EYE BOLT 3 PLACES FIGURE 7 System Mounting T MY Na DISTORTION Following AES Audio Engineering Society recommended practice plots of second and third harmonic distortion for 0 1 rated power 10 watts are shown in Figure 5 Additionally plots are shown for 0 01 rated power in Figure 6 In the important mid band frequencies between 300 and 3000 Hz where voice and music energy is usually the highest the median values for any component of distortion are at or below approximately 1 for the input powers measured POWER HANDLING CAPACITY To our knowledge Electro Voice was the first U S manufacturer to develop and publish a power test closely related to real life conditions First we use a random noise input signal because it contains many frequencies simulta neously just like real voice or instru ment 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 signa includes not only the overall long term average or continuous level which our ears interoret 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 instantaneo
3. 1 This response was measured at 10 feet using a 4 volt input in an anechoic chamber The response is 1 3 octave averaged No external equalization was used DIRECTIVITY A unique feature of the P1100 is the constant directivity dispersion provided by the 100 x 100 Direktor The polar response of the system at selected 1 3 octave bandwidths is shown in Figure 2 These polar responses were measured in anechoic environment at 10 feet using 1 3 octave pink noise inputs The frequencies selected are ful represent ative of the polar response of the system Beamwidth of the system utilizing the complete 1 3 octave polar data is shown in Figure and directivity index Dj are plotted Figure 4 foo COR a H BANE S NE ah ANT N Bead A FREQUENCY N HE w 3rd HARMONIC FIGURE 5 Harmonic Distortion 0 1 rated power input 10 watts 7 H H 1 A N an da EREN f T PAT EE AL TE TT TT ET JUANI hen el THE AU AIM HN AN PSL FREQUENCY HERTZ 3rd FIGURE 6 Harmonic Distortion 0 01 rated power input 1 watt 1 4 20 x 1 1 2 HEX WASHER HD SCREW rex 1 4 20
4. SPECIFICATIONS Frequency Response 10 Feet on Axis Swept One Third Octave Pink Noise Half Space Anechoic Environment see Figure 1 80 18 000 Hz Low Frequency 3 dB Down Point 80 Hz Usable Low Frequency Limit 10 dB Down Point 50 Hz Half Space Reference Efficiency 2 3 Long Term Average Power Handling Capacity at 8 Ohms see Power Handling Capacity section 100 watts Maximum Woofer Acoustic Output 2 3 watts Sound Pressure Level at 1 Meter 1 Watt Input Anechoic Environment Band Limited Pink Noise Signal 300 to 2 000 Hz 96 dB Dispersion Angle Included by 6 dB Down Points on Polar Responses Horizontal and Vertical Planes Indicated One Third Octave Bands of Pink Noise 250 500 Hz 150 30 500 10 000 Hz 100 20 10 000 20 000 Hz 60 120 Directivity Factor Rg 1 800 16 000 Hz Median see Figure 4 10 12 5 4 5 Directivity Index D 1 300 15 000 Hz Median see Figure 4 10 dB 3 5 dB 2 5 dB Phase Variation 300 3 000 Hz 30 Distortion 0 1 Full Power Input see Figure 5 Second Harmonic 100 Hz lt 1 1000 Hz 4 10 000 Hz 3 Third Harmonic 100 Hz 1 1000 Hz lt 1 10 000 Hz lt 1 Distortion 0 01 Full Power Input see Figure 6 Second Harmonic 100 Hz lt 5 1000 Hz 1 10 000 Hz 15 Third Harmonic 100 Hz lt 1 1000 Hz lt 1 10 000 Hz 1 Transducer Complement 12 inch woofer 1 1 2 inch Super Dome tweeter coupled to 9 inch Direktor Box
5. Tuning Frequency 48 Hz Crossover Frequency 1 500 Hz Crossover Slope 12 dB per octave Impedance Nominal 8 ohms Minimum 6 5 ohms Input Connections Screw terminals 48 32 on barrier strip Enclosure Material and Finish One piece ultraviolet stabilized medium density polyethylene with a foamed inner wall and a hard outer wall metal grille Color Black molded in Weather Resistance see Description section for details Environmentally resistant parts with foam water shield over transducers Mounting Hanging via eight 1 4 20 threaded inserts or optional WCB 1 wall ceiling U bracket Optional Accessories WCB 1 wall ceiling U bracket TK60 watt 25 volt 70 7 volt Line transformer kit Dimensions 61 0 cm 24 jn high 38 1 15 wide 21 6 cm 8 5 deep Net Weight 12 7 kg 28 Ib Shipping Weight 13 6 kg 30 SPLINGB FREQUENCY INHERTZ FIGURE 1 Axial Frequency Response 4 voits 10 feet Model PT100 WoWa Constant Directiviy speaker System DESCRIPTION The Electro Voice P1100 is a compact two way Constant directivity speaker system design for both indoor and outdoor sound reinforcement in commercial installations The P 100 components provide a Gegree of directivity control and high output that are of a quality normally associated with separate professional components The depth of the Direktor element closely matches the depth of the woofer providing a strong deg
6. e for materials or labor if delivered prepaid to the proper Electro Voice service facility Unit will be returned prepaid Warranty does not cover finish or appearance items or malfunction due to abuse or operation at other than specified conditions Repair by other than Electro Voice or its authorized service agencies will void this guarantee For shipping address and instructions on return of Electro Voice products for repair and locations of authorized service agencies please write Service Department Electro Voice Inc 600 Cecil Street Buchanan Michigan 49107 Phone 616 695 6831 or Electro Voice West 8234 Doe Avenue Visalia California 93277 Phone 209 651 7777 Electro Voice also maintains complete facilities for non warranty service Service and repair address for this product Electro Voice Inc 600 Ceci St Buchanan Michigan 49107 Specifications subject to change without notice Part Number 530343 340 a GUIEON ELECTRO VOICE Inc 600 CECIL ST BUCHANAN MICH 49107
7. ow horizontal or vertical mounting with chains Note that the nameplate rotates for proper orientation in any mounting position The user must supply eyelet bolts 57 hooks and chains An optional U bracket is available the WCB 1 wall ceiling mounting bracket The WCB 1 may be affixed between the ends i e the 61 cm or 24 inch dimension of the 100 and allows great degree of angular adjustment of the system Figure 7 illustrates a ceiling mount using eyebolts and chains and a wall mount using the WCB 1 bracket LINE TRANSFORMER KIT The TK60 25 70 7 volt line transformer kit is an option available for high impedance systems generally desired in multi speaker distributed designs and some smaller systems where long speaker wire runs are necessary An Electro Voice TM60 transformer is mounted on an input panel that is substituted for the direct 8 ohms input panel supplied with the system The TK60 allows direct input to the system or access to any of the seven transformer taps covering 7 5 15 30 and 60 watts at 25 and 70 7 volts Connections are made on barrier strips with 8 32 screws WARRANTY Limited Electro Voice Professional Sound Reinforcement Loudspeakers and Accessories are quaranteed for five years from date of original purchase against malfunction due to defects in workman ship and materials such malfunction occurs unit will be repaired or replaced at our option without charg
8. ree of time alignment or coherency 100 5 ultraviolet stabilized poly ethylene enclosure features a dual layer sandwich with a hard outer wall layer and a foam cell structure inside The front of the enclosure is protected by metal grille lined with ultraviolet resistant foam which acts as a water shieid The high frequency section of the 10 utilizes a 100 x 100 Direktor coupled to a Super Dom tweeter for the frequency range of 1500 Hz to 18 000 Hz A unique combination of crossover and equalizer is used with the Super Dome to give flat response without the need for an external equalizer The bass section of the P1100 is designed using Thiele Small parameters for efficient low frequency performance extending to frequencies in the 50 to 80 Hz region The 12 inch woofer used in the system is a specially designed heavy duty unit a 2 500 Hz 10 000 Hz m VERTICAL V LEVEL ADJUSTED SCALE 15 5 DECIBELS PER DIVISION BEAMWIDTH 160 125 DEGREES vr a 6 98 100 Te NN gt bolt RI TIY HORIZONTAL O VERTICAL 50 FREQUENCY N HERTZ FIGURE 3 Beamwidth vs Frequency Whole Space anechoic SPECIFIC Rg VALUES te mente Re Q DIRECTIVITY FACTOR DIRECTIVITY INDEX dB 18 EEEN 3 B
9. us peaks test mechanical reliability cone and diaphragm excursion Note that the sine wave test signals sometimes 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 Dut we apply the long term average for several hours adding another extra measure of reliability Specifically the 100 is designed to withstand the power test described in the revised EIA Standard RS 426A The E A test spectrum is applied for eight hours To obtain the spectrum the Guiton Industries Inc 1983 output of a white noise generator white noise is a particular type of random noise with equal energy per bandwidth in Hz is fed to a shaping filter with 6 dB per octave slopes below 40 Hz 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 3 dB per octave slope above 1200 Hz This shaped signal is sent to the power amplifier with the continuous power set at 100 watts into the 6 ohms EIA equivalent impedance 24 5 volts true RMS Amplifier clipping sets instantaneous peaks at 6 dB above the continuous power or 400 watts peak 49 volts peak This procedure provides a rigorous test of both thermal and mechanical failure modes MOUNTING The cabinet is supplied with threaded inserts which will all
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