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Old 07-14-2002, 07:18 PM   #1
Lee

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What are the enclosure types available?

Quote:
4.3 What are the enclosure types available? [JLD, JG]
Only the order of the enclosure itself is shown here. The addition of a crossover network increases the order of the system by the order of the crossover. Example: If a First-Order, 6dB/Oct. crossover (single inductor in series with the speaker) is used with a Fourth Order enclosure, the total system is a fifth order. Note: Air volumes and ratios shown here may not be to scale. This is designed to provide order information only.
Code:
                       First Order                
                       Infinite-Baffle or Free-Air
                         
                               |                  
                               |                  
                              /                   
                             /                    
                           ||                     
                           ||                     
                             \                    
                              \                   
                               |                  
                               |                  
 
 Second Order                        Second Order
 Acoustic- or Air-Suspension         Isobaric* Acoustic-Suspension
 or Sealed                           (Compound Loaded)
  _______________________             _______________________
 |                       |           |                  _____|
 |                      /            |                 /    /
 |                     /             |                /    /
 |                   ||              |              ||   ||
 |                   ||              |              ||   ||
 |                     \             |                \    \
 |                      \            |                 \____\
 |_______________________|           |_______________________|
 
 
 Fourth Order            Fourth Order            Fourth Order
 Bass-Reflex or          Passive Radiator        Isobaric*
 Vented or Ported        Bass-Reflex             Bass-Reflex
  _______________         _______________         _______________
 |               |       |               |       |          ____ |
 |              /        |              /        |         /    /
 |             /         |             /         |        /    /
 |           ||          |           ||          |      ||   ||
 |           ||          |           ||          |      ||   ||
 |             \         |             \         |        \    \
 |              \        |              \        |         \____\
 |               |       |               |       |               |
 |               |       |              /        |               |
 |               |       |             /         |               |
 |           ____|       |            |          |           ____|
 |                       |            |          |
 |           ____        |             \         |           ____
 |               |       |              \        |               |
 |_______________|       |_______________|       |_______________|
 
 
 Fourth Order                    Fourth Order
 Single-Reflex Bandpass          Isobaric* Single-Reflex Bandpass
  _________________    ____      _______________________    ____
 |         |       |  |    |    |               |       |  |    |
 |        /        |  |    |    |              / \      |  |    |
 |       /                 |    |             /   \             |
 |     ||                  |    |           ||     ||           |
 |     ||                  |    |           ||     ||           |
 |       \                 |    |             \   /             |
 |        \                |    |              \ /              |
 |_________|_______________|    |_______________|_______________|
 
 
 Fourth Order                      Fourth Order
 Three Chamber                     Three Chamber Isobaric*
 Single-Reflex Bandpass            Single-Reflex Bandpass
  ____________   ____________      ______________   ______________
 |      |     | |     |      |    |       |      | |      |       |
 |     /      | |      \     |    |      / \     | |     / \      |
 |    /                 \    |    |     /   \           /   \     |
 |  ||                   ||  |    |   ||     ||       ||     ||   |
 |  ||                   ||  |    |   ||     ||       ||     ||   |
 |    \                 /    |    |     \   /           \   /     |
 |     \               /     |    |      \ /             \ /      |
 |______|_____________|______|    |_______|_______________|_______|
 
 
 Fifth Order = Fourth Order Enclosure + First Order Crossover
             = Third Order Enclosure + Second Order Crossover, etc.
 
 
 Sixth Order                        Sixth Order
 Dual-Reflex Bandpass               Isobaric* Dual-Reflex Bandpass
  ____    _____________    ____      ____    ____________    ____
 |    |  |       |     |  |    |    |    |  |      |     |  |    |
 |    |  |      /      |  |    |    |    |  |     / \    |  |    |
 |    |  |     /               |    |    |  |    /   \           |
 |           ||                |    |          ||     ||         |
 |           ||                |    |          ||     ||         |
 |             \               |    |            \   /           |
 |              \              |    |             \ /            |
 |_______________|_____________|    |______________|_____________|
 
 Sixth Order
 Three Chamber                        Quasi-Sixth Order
 Dual-Reflex Bandpass                 Series-Tuned Bandpass
  _    _________   _________    _      _________________    ____
 | |  |   |     | |     |   |  | |    |           |     |  |    |
 | |  |  /      | |      \  |  | |    |          /      |  |    |
 |      /                 \      |    |         /               |
 |    ||                   ||    |    |       ||                |
 |    ||                   ||    |    |       ||                |
 |      \                 /      |    |         \               |
 |       \               /       |    |          \              |
 |________|_____________|________|    |       ____|             |
                                      |                         |
                                      |       ____              |
                                      |           |             |
                                      |___________|_____________|
 
 
 Seventh Order = Sixth Order Enclosure + First Order Crossover, etc.
 
 Quasi-Eighth Order               
 Series-Tuned Dual-Reflex          Eighth Order
 Bandpass                          Triple-Reflex Bandpass
  _    _______________    _         ____________    _____________
 | |  |        |      |  | |       |            |  |             | 
 | |  |       /       |  | |       |            |  |             |
 |           /             |       |                             |
 |         ||              |       |                             |
 |         ||              |       |                             |
 |           \             |       |____    _____________    ____|
 |            \            |       |    |  |      |      |  |    |
 |         ____|           |       |    |  |     /       |  |    |
 |                         |       |            /                |
 |         ____            |       |          ||                 |
 |_____________|___________|       |          ||                 |
                                   |            \                |
                                   |             \               |
                                   |______________|______________|
 
 
 * Isobaric or Coupled Pair (Iso-group) Variations:
 
 A variety of configurations may be used in the isobaric loading
 of any order enclosure. Physical and acoustic restrictions may
 make one loading configuration preferable to another in a
 particular enclosure.
 
 Composite or Push-Pull                  Compound or Piggy-Back
 or Face-to-Face Loading                 or Tunnel Loading
  _________________                 ___________________________
 |                 |               |                       ____|
 |                / \              |                      /   /
 |               /   \             |                     /   /
 |         >>> ||     || >>>       |               >>> ||  || >>>
 |         >>> ||     || >>>       |               >>> ||  || >>>
 |               \   /             |                     \   \
 |                \ /              |                      \___\
 |_________________|               |___________________________|
 
 Back-to-Back Loading                    Planar Loading
  _________________________         ___________________________
 |                _________|       |                        |  |
 |                \       /        |                       /   |
 |                 \     /         |                      /    |
 |              >>> || || >>>      |                    || >>> |
 |              >>> || || >>>      |                    || >>> |
 |                 /     \         |                      \    |
 |                /_______\        |                       \   |
 |_________________________|       |________________________|  |
                                                            |  |
                                                           /   |
                                                          /    |
                                                        || <<< |
                                                        || <<< |
                                                          \    |
 >>> indicates direction of                                \   |
 >>> simultaneous cone movement.                            |__|
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