Click here to download ELECTRO-VOICE S-122 (01) PDF MANUAL

PDF Content Summary:


****** Page 1 ****** SPECIFICATIONS Frequency Response, Measured At 10 Feet on Axis, Swept ‘la-Octave, Half-Space Anechoic Environment (see Figure I. Curve shown has been normalized for 1 watt!’ Meter.): 70-20,000 Hz Low-Frequency 3-dB-Down Point: 70 Hz Usable Low-Frequency Limit (10-dB-down point): 55 Hz Half-Space Reference Efficiency: 3.9% Long-Term Average Power Handling Capacity per EIA Standard RS-426A (see Power Handling Capacity section): 200 watts Maximum Woofer Acoustic Output: 7.8 watts Sound Pressure Level at 1 Meter, 1 Watt Input, Anechoic Environment, Band- Limited Pink Noise Signal, 300-2,000 Hz: 99 dB Dispersion Angle Included by 6-dB-Down Points on Polar Responses, Indicated One- Third-Octave Bands of Pink Noise, 250-20,000 Hz Horizontal (see Figure 4): 1100 600 Hz Vertical (see Figure 4): 510 ± r Directivity Factor (0), goo-16,000 Hz Median (see Figure 5): 11.6 (+5.5, -8) Directivity Index Dii 800-16,000 Hz Median (see Figure 4): 10.5 dB (+1.5 dB. -5 dB) Distortion, 0.1 Full Power Input Second Harmonic, 100 Hz: 1,000 Hz: 4% to,coo Hz: Third Harmonic, 100 Hz: < 1,000 Hz: < 10,000 Hz: 5% Distortion, 0.01 Full Power Input Second Harmonic, 100 Hz: 1,000 Hz: 2% 10,000 Hz: 4% Third Harmonic, too Hz: 1,000 Hz: 10,000 Hz: Transducer Complement, High-Frequency: DH-2010A HT94 constant-directivity horn Low-Frequency: EVG-12 Box Tuning Frequency, 62 Hz Crossover Frequency: Crossover Slope: '2 dB per octave Impedance, Nominal: 8 ohms Minimum: 6.5 ohms Input Connections: Parallel t/4.inch phone jacks (allows paralleling of multiple speakers) Enclosure Materials and Colors: Black carpet covered Road-WocdTM Dimensions: 62.8 cm (24.7 in.) high 46.2 cm (f 8.2 in.) wide 30.5 cm (12.0 in.) deep Net Weight: 21.8 kg (48 lbs) -a MARK IV company Axial •voas/10 s-122 Two-Way Stage Speaker System Shipping Weight: 245 kg (54 lbs) Optional Accessories: 1 OOBK speaker stand DESCRIPTION The Electro-Voice S-122 is a 200-watt, two- way. high-efficiency, constant-directivity stage system featuring a vented, direct-radiating woofer section. It combines professional quality components arranged in a vertical array with an unusually durable enclosure. The result is wide-range, accurate sound reproduction with transparent highs and extended bass response. The enclosure is constructed of Road* Woodtu, a structural material made of layered and selectively oriented hardwood strands strongly bonded together with phenolic resins. This high-strength shell is covered with densely woven. abuse-resistant black carpeting. (U.S. Patent #4.624.238) The high-frequency section of the S.' 22 utilizes a 900 x 400 constant-directivity horn driven by a one-inch throat, wide-bandwidth. titanium diaphragm driver. This driver uses a unique convex drive Time Pathoa phasing plug structure (IJ.S. Patent for smooth and extended high-frequency performance. The bass section of the S-122 is designed using Thiele-Small parameters for efficient performance to below 70 Hz. The new EVG- 12, 2-inch woofer used is a specially designed unit featuring an extended length voice coil and high-temperature construction materials. ****** Page 2 ****** 200 Hz 125 kHz 8 kHz 315 Hz 2 kHz 10 kHz €30 Hz 3.15 kHz 16 kHz FIGURE 2 — Polar Response (1/3-octave pink noise, 4-volts/10 feet) 8m Hz 5 kHz 20 kHz HORIZONTAL VERTICAL 300 ßüiiiiiäiåiiifflä HORIZONTAL O VERTICAL sc too 200 500 FREOUENCY tcooc FIGURE 3 Beamwidth vs. Frequency Whole Space (anechoic) NUMBERS INDICATE SPECiF}C VALUES su 2000 sooo wooc FREOUENCY FIGURE 4 Directivity vs. Frequency Whole Space (anechoic) ****** Page 3 ****** CONSTANT-DIRECTIVITY SPEAKER SYSTEM The crossover frequency and speaker component geometries have been selected so that the directional characteristics of the woofer and constant-directivity horn match at the crossover frequency (approximately 900 circular coverage patterns for each) to create a special system type the constant• directivity system. At higher frequencies the horizontal coverage pattern remains constant and the vertical pattern smoothly transitions to a 400 to 500 angle above 5,000 Hz. Response within the 900 x 400 rated coverage angle is uniform, which means dependable audience coverage without -hot spots" or dead zones at certain frequencies. The 900 x 400 dispersion characteristic also helps avoid early reflec- tions from nearby floor or side wall surfaces which could degrade performance. The controlled directivity of the high- and low- frequency transducers also eliminates response irregularities caused by diffraction off nearby enclosure edges. ENCLOSURE CONSTRUCTION The 22 enclosure utilizes a structural material that combines the strength of high- quality plywood with the density and acoustic damping of particle board without brittleness. Road-Woodru uses the same principle of crossbanding veneers, as in plywood. in order to achieve its very high rigidity. A tough liquid- phenolic resin is blended with long, narrow strands of hard-wood. Alternate layers are perpendicularly bonded under intense heat and pressure to form panels of superior uniformity. Unlike many grades of plywood, Road-Wood is dimensionally stable, water- resistant and free from voids. A combination of dado cut joints, tough adhesives and proper bracing ensure a sonically dead enclosure free from panel resonances. The densely-woven, industrial-grade, abuse- resistant carpeting provides a finish that is both attractive and highly durable. Large, heavy-duty metal corner protectors, firmly secured rubber feet, recessed handles and a protective metal grille complete the picture and ensure that the S-122 speaker system is ideally suited to a long and reliable life "on the road." FREQUENCY RESPONSE The combination of a 12-inch woofer, wide- bandwidth. high-frequency driver and an equalized crossover results in the wide and smooth overall response shown in Figure i. Curves are shown for normal box tuning. This response was measured at 10 feet, using a swept-octave input of 4-volts; no external equalization was used. DIRECTIVITY A unique feature of the S-f22 is the constant- directivity dispersion provided by the 900 x 400 horn. The polar response of the system at selected 'Is-octave bandwidths is shown in Figure 2. These polar responses were measured in an anechoic environment at 10 feet using '13-octave pink noise inputs. The frequencies selected are fully representative of the polar response of the system. Beamwidth of the system utilizing the complete 1/3-octave polar data is shown in Figure 3. R, (Q) and directivity index (Do are plotted in Figure 4. 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 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 'Iong-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 several hours. adding another extra measure of reliability. Specifically, the S-122 is designed to withstand the power test described in ElA Standard RS-426A. The ElA test spectrum is applied for eight hours. To obtain the 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 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 a-dB-down points are at 100 Hz and 1.200 Hz with a slope above 1200 Hz. This shaped signal is sent to the power amplifier with the continu- ous power set at 200 watts into the [6.01 ohms ElA equivalent impedance. (34.6 volts true RMS). Amplifier clipping sets instantaneous peaks at 6 dB above the continous power. or 800 watt peak (69.2 volts peak). This procedure provides a rigorous test of both thermal and mechanical failure modes. STAND MOUNTING The S-122 can be mounted on the 1008K speaker stand. or any other stand with a 131B- inch diameter shaft. WARRANTY (Limited) Electro-Voice products are guaranteed against malfunction due 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, 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; (c) malfunction resulting from use or operation of the product other than as specified in the product data sheet or owner's manual; (d) malfunction resulting from misusa or abuse of the product; or (e) malfunction occurring at any time after repairs have bean 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 Sill of sale or receipted invoice. A 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 the only remedies provided to the customer. Electro-Voice shall not be liable for any incidental or consequential damages including. without limitation, injury to persons or property or loss of use. Some states do not allow the exclusion or limitation oi 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. ****** Page 4 ****** J2 1.5æF Ll 1.6mH RI 2.7n L2 1 .OmH 18æF PTC 10 n 20 n SCHEMATIC DIACRÅM








Leave a comment, question, review or page error below. Account not required.

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Scroll to top