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- #Hexahedron speaker enclosure design driver#
- #Hexahedron speaker enclosure design manual#
- #Hexahedron speaker enclosure design full#
#Hexahedron speaker enclosure design manual#
Aperiodic Enclosures - Great Sound Stereo Speaker Manual by David Weems.Aperiodic Closed Box Loudspeakers - Loudspeaker Design Cookbook by Vance Dickason.For cabinet volumes of about 50 to 80L, two vents are needed, and for volumes of more than 80L, three or more vents may be required.įigure 2: Aperiodic Speaker Enclosure Additional Aperiodic Loudspeaker Information For enclosure volumes up to about 50L, one vent is generally sufficient.
#Hexahedron speaker enclosure design driver#
Generally, about 60% of the cabinet volume should be filled with damping material, while being careful to leave an open path from driver to the vent. Enthusiasts of aperiodic enclosures will often compare the performance with transmission line enclosures, in that the design avoids "ringing" effects of ported enclosures, while alleviating the "pressure effect" of a sealed box.Ī typical enclosure is shown in Figure 2. The impedance response of a sealed versus an aperiodic enclosure is shown in Figure 01 below.įigure 1: Impedance Response - Sealed vs Aperiodic EnclosureĪperiodic box designs roll off at about 18 dB/octave. This results in clearer, better defined bass, with more amplifier power and control into the lower frequencies. This is an interesting design and approach to speaker cabinet construction. By allow air to leak from the enclosure, both the frequency response and impedance peaks are tamed. Of course, if 3D printing enclosures isnt enough for you, you could always. If a driver is placed into a sealed box that is too small, the result will be a high Q, which will cause a peak in the lower frequency response and a high impedance peak. The purpose of an aperiodic design is to allow a smaller enclosure size than would normally be possible in a sealed box. Photograph 2: Scanspeak Flow Resistance Vent Some books on speaker construction emphasize bracing the walls up the kazoo to make them rigid. Photographs of a Dynaudio Variovent and a ScanSpeak Flow Resistance Vent are shown below. In the case of the speaker enclosure, there are only two things that can happen to the energy flowing into the enclosure: (1) sound energy can flow back out into the room, or (2) the sound energy can be converted into heat by sound absorbing material. These Aperiodic ports or vents are sold primarily by Dynaudio, (called "Variovents") and by Scan-Speak (called a "flow resistance vent").
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The aperiodic enclosure vents the inside of the box to the outside air through a damped ported (a port stuffed with damping material), which is sometimes referred to as an "acoustic resistor" or "resistive port/vent".
#Hexahedron speaker enclosure design full#
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