Bass Reflex Hornresp Tutorial Manual

Bass reflex hornresp tutorial manual

This UniBox version and all its former released versions including but not limited to all graphs, layout, formulas and calculation routines, are the intellectual property of Kristian Ougaard, and are C Copyright - You may not copy, change or modify the spreadsheet layout, formulas or calculation routines in any way.

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You may download this file and use UniBox freely for design of your personal loudspeakers as long as it is for non-commercial purposes only. I will not be held responsible for any bad sounding loudspeakers or any problems of any kind this file may cause you. It will import Design Data Base files version 1. Download Design Data Base with over drive units. The TS parameters are extracted from brochures or found on the Internet. Note, to lookup the TS parameters of your favorite unit is good.

Bass reflex hornresp tutorial manual

To measure the parameters yourself is even better. Peerless data base ubase Bruce Slevinsky has compiled a design data base containing drivers.

Loudspeaker Enclosure Calculator

As it has been impossible for Bruce to get the full set of TS parameters for all units he has calculated the missing parameters needed for UniBox using a technique described in his memorandum and corresponding Excel sheet.

The Bruce Slevinsky data base ubase Jan Fredriksson of the Thiele-Small Loudspeaker Database Web site maintains one of the largest databases for Thiele-Small parameters of your favorite loudspeaker units.

Furthermore, a host of other useful design parameters are listed. You can also submit new or your own TS data to help make the database even better. Excel 97 Many Excel 97 users reports that UniBox 3. Some have problems with a few features but usually this is cured when all Microsoft service releases are installed.

Users of the French version of Excel 97 have problems when opening UniBox, but Antoine Bonin found an easy work around. Go to the Windows regional parameter setting and select English instead of French. This has been verified by Christopher Pace with a good result too.

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Please remember to go to Tools Options Security Macro Security and set the level to Medium to ensure all the macros are allowed to run. Version and Description 1. Closed Box and Vented Box design. Use the Excel Zoom feature to optimize the graph size to your setup. Calculation of Acceleration Factor added. Help for calculation with two drivers in the same box.

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Bug fix for series resistance to affect driver electrical Q only. Easy control with Open, Save and Delete buttons. Some small features added. Minor improvements. Design Data Base additions: export, import, sort and size increased to entries.

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Drive unit configuration for 1, 2, 3 or 4 units in parallel, series and compound setup. Possibility to set the number of passive radiators.

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Standard model for closed boxes changed to include fixed leakage loss, Ql. Calculation of SPL at 2. Down fire application figure added. Help page added with box volumes in cubic feet and port sizes in inches.

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Enhanced port self resonance model for BPST box. Improved user interface.

Loudspeaker Enclosure Calculator

Drive unit efficiency calculations added. Export of all graphs using GIF image file format. Design Data Base format has not been changed.

Bass reflex hornresp tutorial manual

The effect of this inductance model is now included in all graphs. Passive low pass crossover of up to 4. Port self resonance model added to the vented box design.

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Driver piston range calculated and shown in mini-graphs. Imports Design Data Base file ver. Exports Design Data Base file ver. Calculation of the required power amplifier RMS voltage needed to produce the wanted nominal power.

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A check box has been added for easy selection of whether the crossover circuit is to be included in the frequency response graphs. Calculation of the drive unit effective Qts now also includes the loss resistance of the crossover coils 4.

Bass reflex hornresp tutorial manual

The effect of Rco1 and Rco2 now included in efficiency and effective Qts calculations. Minor enhancements and adjustments. Further improved online help windows. Corrected a bug in the impedance graph calculation of the high frequency inductance part when using multiple drive units. You can now import an active filter correction function and see the resulting frequency response, cone excursion, port air speed and much more. A typical design approach would be to simulate your box in UniBox and export the frequency response as a FRD file.

Export this correction as a FRD file and use the new import feature of UniBox to see the final results.

Designing and Building a Speaker Box Example

Graphs have been added to show the necessary power amplifier peak voltage and peak current for all box alignments. Now also extrapolates any high frequency curve if needed. The imported file is normalized to 0 dB at its maximum value. Suitable for general active subwoofer crossover filters.

Loudspeaker Enclosure Calculator Articles

If you would like to check your baffle diffraction, produce FRD files from a graphic frequency response or calculate a Linkwitz Transform circuit have a look at Paul Verdone's site with links to it all. This is a real good collection of free programs created by the FRD Consortium. You have been listening to some funky jazz.

Sponsored by: Charlie's Audio Pages. First release of Excel version with enhancements related to better Excel performance. Improved prediction of suggested port minimum diameter to avoid port noises.

Bass reflex hornresp tutorial manual

Text and graphs scaled to fit standard Windows setup with small font size. Speaker impedance graphs for Closed, Vented and Passive Radiator boxes now available including effect of equivalent voice coil inductance. Sensitivity loss due to series resistance added. Design Data Base facility added which handles up to user designs.

Calculation of Step Response for all three box models. Calculation of Bandpass Single Tuned boxes added. Improved Design Data Base import function with check for already existing entry. A memory manager has been added, where up to 6 frequency response graphs can be compared. A check box has been added for easy selection of whether the voice coil inductance model is to be included in the frequency response graphs. Calculation of the drive unit effective Qts now also includes the loss resistance of the crossover coils.

Calculation of the closed box apparent Qtc is back as requested by many users. It is now possible also to export a single Data Base entry for a friend. FRD file import feature added. FRD file import feature improved. FRD file format changed to allow for both "space" and "tab" between data entries.