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Resumen del manual
They were designed to be used as high level stage monitors in portable sound reinforcement and can also be used as a small, full range system in churches or night clubs or for reinforcement installation in any small to medium room. The 938 may be placed at 90°, 50° or 30° angles (referenced to floor-plane mounting surface). The reversible grille permits a right-side-up orientation regardless of the speaker's position. The 938 uses an upgraded version of the Altec Lansing 604, long recognized for uniform frequency response and high efficiency, with low and high frequency elements mounted coaxially to produce a single point source of sound. New materials have been used in the low and high frequency voice coils which allow the 938 to handle large power amplifier outputs. The dividing network is designed with 12 dB per octave slopes for a smooth and gradual transition at crossover and has adjustable attenuation at high frequencies. The enclosure is constructed of 3A" birch plywood and is finished in a black texture surface polyurethane paint with a black grille. The 938 also features recessed carrying handles and durable metal corner guards to protect the cabinet during handling and set-up. In addition, convenient tee nut mounting points are provided to aid in hanging the system in a permanent installation. When used as a monitor or a small main system, the 938 will supply the high level quality sound that is required for churches, hotels and other installations. SPECIFICATIONS System Type: Pressure Sensitivity: Frequency Response: Power Flandling: Maximum Long Term Output: Impedance: Distribution Pattern: Components: Crossover Network: Two way, vented, full range loudspeaker system 100 dB SPL (1W, 1M, 80 Hz-15 kHz, re: 20//Pa, see Note 2) 80 Hz-15 kHz (see Figure 1, Note 3) 150 watts, 80 Hz-15 kHz, AES method (see Note 4) 300 watts, 80 Hz -15 kHz. continuous program material (see Note 12) 600 watts peak power, 80 Hz-15 kHz (see Note 13) 122 dB SPL (1M, re: 20*yPa, see Note 5) 128 dB SPL peak 7 20 minimum, maximum inductive phase angle = 68° at 8 Hz. maximum capacitive phase angle = 59° at 20 Hz (see Figures 3 and 4, Note 11) 60° horizontally by 40° vertically (see Figure 8) 16” coaxial loudspeaker, part number 50-03-026768 938-8AD part number 56-06-027683, 938-8AE part number 56-06-027506 Crossover frequency 2 kHz with choice of Enclosure: Input Connector: Replacement H.F. Diaphragm: L.F. Recone Kit: Replacement Grille: Dimensions: Net Weight: Shipping Weight: Finish: high frequency attentuation Vented type for optimum response, built of SA inch (1.9 cm) birch plywood lined with glass wool, includes tee nut mounting points on each side and a removable grille. 938-8AD; red and black live way binding posts and two !4” phone jacks wired in parallel. 938-8AE; red and black five way binding posts and XLR connectors wired in parallel (Pin 2 is positive and Pin 3 is negative). Model 26420 R604-8L Model RC 938 20.5” (52.1 cm) high 22” (55.8 cm) wide 21.5” (54.6 cm) deep 58 lbs. (26.4 kg) 60 lbs. (27.3 kg) Black, texture finish, polyurethane paint, black grille cloth FREQUENCY (Hz) Figure 1. Frequency Response (See Notes 1 and 3) FREQUENCY (Hz) Figure 2. Phase Response (See Note 6) FREQUENCY (Hz) Figure 3. Magnitude of Impedance Figure 4. Complex Impedance 100 200 500 1K 2K FREQUENCY (Hz) SK 10K 20K 50 100 200 500 1K 2K FREQUENCY (Hz) 10K 20K Figure 5. Harmonic Distortion at .01 Rated Power (1.5 watts, See Note 7) Figure 6. Harmonic Distortion at 0.1 Rated Power (15 watts, See Note 7) 250 Hz 315 Hz 200 Hz 400 Hz 1 kHz 500 Hz 800 Hz 630 Hz 2.5 kHz 1.25 kHz 1.6 kHz 2 kHz 3.15 kHz 6.3 kHz 4 kHz 5 kHz Figure 7. One-third Octave Polar Response Charts (See Note 8) HORIZONTAL VERTICAL 20 kHz Figure 8. Coverage Angle I 1 I 5 MtOUCNCT IMM Figure 10. Horizontal Off-Axis Response Contours DISTANCE (m) 3.0976 3.304 3.510 3.717 3.923 4.1294 —r- 6 dB m ~o > rr LU z LU 9000 9600 10200 10800 1...
Otros modelos de este manual:Altavoces - 938-8AE (862 kb)