Building an effective,
high performances, single 18”,
front loaded subwoofer
Eighteen Sound
A division of A.E.B srl
Via de...
18” subwoofer kit
•High performance 18 inch subwoofer system.
•Over damped design for better transient response.
•Compact ...
18” subwoofer kit
18ND9300
18LW1400
18” subwoofer kit
Internal view
•The enclosure should be made of baltic
birch plywood (18mm thickness).
•Bolts should be M...
18” subwoofer kit
Explodedview
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
18ND9300/18LW140018ND9300/18LW1400
High pass:High pass: Butterworth 2n...
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Plano Caja Acustica 18s kit18

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Plano Caja Acustica 18s kit18

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Plano Caja Acustica 18s kit18

  1. 1. 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
  2. 2. 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
  3. 3. 18” subwoofer kit 18ND9300 18LW1400
  4. 4. 18” subwoofer kit Internal view •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. •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.
  5. 5. 18” subwoofer kit Explodedview
  6. 6. 18” subwoofer kit Front view
  7. 7. 18” subwoofer kit Front panel bolt holes
  8. 8. 18” subwoofer kit Front section Woofer panel section
  9. 9. 18” subwoofer kit Side section
  10. 10. 18” subwoofer kit Rear panel
  11. 11. 18” subwoofer kit Measurements: 18ND9300/18LW1400
  12. 12. 18” subwoofer kit Equalization settings suggestions 18ND9300/18LW140018ND9300/18LW1400 High pass:High pass: Butterworth 2nd order @ 25 HzButterworth 2nd order @ 25 Hz Parametric EQ:Parametric EQ: fofo= 30 Hz= 30 Hz -- gain= 6 dBgain= 6 dB -- Q= 2Q= 2 Low pass:Low pass: LinkwitzLinkwitz/Riley 4th order @ 120 Hz/Riley 4th order @ 120 Hz

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