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Nessun Titolo Diapositiva - Foros Del Doctor Proaudio

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Building an effective, high performances, single 18”, front loaded subwoofer Eighteen Sound A division of A.E.B srl Via dell'Industria 20 - 45025 Cavriago (Reggio Emilia)- Italy 18” subwoofer kit •High performance 18 inch subwoofer system. •Over damped design for better transient response. •Compact box dimension. •Flared end vent design for air turbulence reducing. •Internal bracing for cabinet loss reducing •Double driver choice is possible: 18ND9300 and 18LW1400 are basically the same speaker concept. Their performances are very similar except for a slightly more damping present in the 18ND9300. The 18ND9300 allows for a lighter weight box design. The “glorious” 18LW1400 can still represent the proper cost effective solution if same performances are required with less restrictive weight limits. •18ND9300 woofer key features: Neodymium magnet 4” interleaved sandwich voice coil Double Silicon Spider Double Demodulating Rings 900W continuous pink noise •18LW1400 woofer key features: 4” interleaved sandwich voice coil Double Silicon Spider Double Demodulating Rings 1000W continuous pink noise 18” subwoofer kit 18ND9300 18LW1400 18” subwoofer kit •The enclosure should be made of baltic birch plywood (18mm thickness). •Bolts should be M5 or M6, 35mm or more length. •M5 or M6 T-Nuts are recommended. •Accurate damping of the cabinet interior is highly recommended. Internal view •An high density dampening material, such as Dacron or other synthetic fibers, is required for better performance. •Handling, rigging and connectors are at user’s choice. It’s very important that their placement should not influence in any way the proper vent functionality. Exploded view 18” subwoofer kit 18” subwoofer kit Front view 18” subwoofer kit Front panel bolt holes 18” subwoofer kit Front section Woofer panel section 18” subwoofer kit Side section 18” subwoofer kit Rear panel 18” subwoofer kit Measurements: 18ND9300/18LW1400 18” subwoofer kit Equalization settings suggestions 18ND9300/18LW1400 High pass: Butterworth 2nd order @ 25 Hz Parametric EQ: fo= fo= 30 Hz - gain= 6 dB - Q= 2 Low pass: Linkwitz/Riley Linkwitz/Riley 4th order @ 120 Hz