User manual PEAVEY QW 218 DATASHEET

[. . . ] SPECIFICATIONS QWTM-218 Transducer complement: 2 x 18" individually vented Low RiderTM 18" Sub Box tuning frequency: 36 Hz Recommended active crossover frequency region and slope: 150 Hz at 18 dB/octave Impedance (Z) (each woofer): Nominal: 8. 0 Minimum: 7. 3 Input connections: 2 x 4-pin Neutrik® Speakon® inputs in parallel 1 x 8-pin Neutrik Speakon input 1 x 4-pin Neutrik Speakon thru (for use with 8-pin input) Enclosure materials and finish: 3/4" plywood finished in the durable Black Hammer HeadTM polyurethane coating Mounting provisions: This unit is not designed for overhead suspension Dimensions (H x W x D): 49. 0" x 21. 00" x 26. 75" 1244 mm x 533 mm x 679. 45 mm Net weight: 147 lbs. (67. 2 kg) Features · Two new Peavey Low Rider 18" Subwoofers · 3, 200 Watts of program power · Extreme low frequency response down to 30 Hz · Neutrik® Speakon® Professional input connectors · Very compact design · Black Hammer HeadTM Polyurethane coating Frequency response, 1 meter on-axis, swept-sine in anechoic environment: Anechoic: 47 Hz ­ 1. 5 kHz (±3 dB) Half-space: 40 Hz ­ 1. 5 kHz (±3 dB) Usable low frequency limit (-10 dB point): Anechoic: 34 Hz Half-space: 30 Hz Power handling: (Both woofers driven) 1600 W continuous 3200 W program 6400 W peak Sound pressure level, 1 Watt, 1 meter in anechoic environment: Anechoic: 100 dB SPL, (2 V input) Half-space: 106 dB SPL Maximum sound pressure level (1 meter): Anechoic: 132 dB SPL continuous 138 dB SPL peak Half-space: 138 dB SPL continuous 144 dB SPL peak SPECIFICATIONS Description The QWTM-218 incorporates two of the new extra-high power Low RiderTM 18" woofers and a new compact cabinet design. [. . . ] The inclusion of a standard four-pin Neutrik® jack in parallel allows for daisy chaining to another cabinet when bi-amping. Despite its compact dimensions for a dual 18" bass enclosure, this system can produce some extremely serious sound. Frequency response This measurement is useful in determining how accurately a given unit reproduces an input signal. The frequency response of the QW-218 is measured at a distance of 1 meter using a 1 Watt (into the nominal impedance) swept-sine input signal. As shown in Figure 1, the selected drivers in the QW-218 combine to give a smooth frequency response from 47 Hz to 1. 5 kHz. Power handling There are many different approaches to power handling ratings. Peavey rates this loudspeaker system's power handling using a modified form of the AES Standard 2-1984. Using audio band 40 Hz to 400 Hz pink noise with peaks of four times the RMS level, this strenuous test signal assures the user that every portion of this system can withstand today's high technology music. This rating is contingent upon having a minimum of 3 dB of amplifier headroom available. Harmonic distortion Second and third harmonic distortions vs. frequency are plotted in Figures 3 and 4 for two power levels. Ten percent (10%) of rated input power and either one percent (1%) of rated input power or one watt, whichever is greater. [. . . ] Box 2898, Meridian, Mississippi 39301-2898. SPECIFICATIONS QWTM-218 Amplitude Response (1W 1m On-Axis) 110 dB SPL (re 20 Pa) 100 90 80 70 60 20 Measured in half space Measured in anechoic 50 100 200 Figure 1 Q-Wave 218 500 1k Frequency (Hz) 2k 5k 10k 20k Impedance 100 50 30 20 Z ( ) 10 5 3 2 1 20 50 100 200 500 1k Frequency (Hz) 2k 5k 10k 20k Figure 2 Q-Wave 218 SPECIFICATIONS QWTM-218 Harmonic Distortion : 10% Rated Power 130 120 dB SPL (re 20 Pa) 110 100 90 80 70 60 20 50 100 200 500 1k Frequency (Hz) 2k 5k 10k 20k Figure 3 Q-Wave 218 2nd Harmonic 3rd Harmonic Harmonic Distortion : 1% Rated Power 120 110 dB SPL (re 20 Pa) 100 90 80 70 60 50 20 50 100 200 500 1k Frequency (Hz) 2k 5k 10k 20k Figure 4 Q-Wave 218 2nd Harmonic 3rd Harmonic 80304915 Features and specifications subject to change without notice. Peavey Electronics Corporation · 711 A Street · Meridian, MS 39301 · (601) 483-5365 · FAX (601) 486-1278 · www. peavey. com · ©2002 Printed in the U. S. A. [. . . ]