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Software for Speaker Design
The Single Driver Website is providing third party software to help the DIY builder create loudspeakers. The software programs are copyright by their respective authors. Use these programs at your own risk. No warranty is expressed or implied.
On Site:
This is for horn calculations based on W. Marshall Leach's article "On the Specification of Moving-Coil Drivers for Low-Frequency Horn-Loaded Loudspeakers" (see the Readmefirst1.txt file)
Off Site:
New Features (version 5.00):
- Multiple-document interface (MDI)
- Electrical impedance and diaphragm displacement charts
- Changed horn mouth acoustical impedance model
- Extension of chart frequency range down to 10 hertz
- Automatic scaling of chart Y-axis
- Exporting of horn and chart data
- Masking of air chamber resonances
- Variable input signal voltage
- Optional saving of record changes
Version 4.
Horn Response can now also analyze the Salmon family of hyperbolic-exponential horns. The full range of flare values can be considered - from 0.00 for catenoidal through 1.00 for exponential to 99999.99 (infinity) for a conical horn. (Note that the flare parameter FLA only becomes visible when option HYP is selected).
A tool to display horn schematic diagrams has also been developed and incorporated into the program. All dimensions are accurately scaled and proportionally correct (that is, squares are displayed "square" and horn mouth included angles are truly represented).
David has recently released Version 4.10 of Hornresp. The new version incorporates an enhanced "Horn Segment Wizard" tool to help with the design of conical, exponential, hyperbolic-exponential and tractrix horns - as you know, the original Wizard applied to exponential horns only.
One of the neat things that the Wizard can do is to calculate the cross-sectional area at any point along the axial length of a horn. This should be a useful option for DIY designer/constructors, particularly if they are building a tractrix horn. The conventional tractrix formula allows for an axial distance to be calculated given an area, but not vice versa. Hornresp overcomes this limitation (simply set the 'Calculate' option button to S2 and enter the required values for L12, keeping S1 and F12 constant).
WinISD has extensive driver database, box design for closed (sealed), vented, and bandpass, and outputs of gain, phase, SPL, and group delay (by frequency).
- Liberty Instruments PRAXIS
- Audio Test software (shareware)
- Lalena DIY Audio with box designers, crossover designers, L-pad calculators, notch filter calculators - Great!
- Tractrix calculator for 12-sided Front Horns
- Closed box and vented box and crossover network Java applet calculators (Steven Reid)
- Speak 32 commercial software by Earl Geddes (includes horn simulations) (for sale, demo is free)
- AJ-Horn (for sale)
- True Audio commercial speaker design software and book (for sale)
- Ishtek's speaker design Java applets for vented box and horns (free on the web)
- Daniel Ciesinger's Java applet horn calculator (free on the web)
- Driver Database and speaker software
- NaTKiT1 loudspeaker production test system (in use by, amongst others, B&W, Goodmans, Harman Pro, Martin Audio, Mission, Tannoy)
- DPC - Driver Parameter Calculator by Claus Futtrup (DOS)
- Daniel Ciesinger's Java applet horn calculator (free on the web)
- Audio analysis software: scope, spectrum analyzer, signal generator, and more (Free!)
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And…
Another list of speaker design software from Nightstormer.
Notes for Thorsten's Baffle and Box Calculators
XL-Box Version 2.0 Description
Requires: MS Excel Version 7 or higher.
Capabilities:
- Calculates the T/S parameter derived sensitivity in dB/2.83V/m for the 20Hz - 1kHz range for four individual driver/box combinations, including systems with two woofers and isobarik systems
- Calculates influence of boundary loading effects
- Calculates influence of baffle diffraction loss
Limitations:
- Maximum number of drivers per plot - 2 - these will be assumed parallel
- No inclusion of DVC woofers with individual coils (must be modeled with coils in parallel or series)
- No calculation of room-modes and their excitation by speaker positioning with respect to wall
- No calculation of the influence of amplifier source resistance or crossover resistances on the driver
XL-Baffle Version 0.9 Description
Requires: MS Excel Version 7 or higher.
Capabilities:
- Calculates the T/S parameter derived sensitivity in dB/2.83V/m for the 20Hz - 1kHz range for four individual driver/plane open baffle combinations with a single driver
- Calculates influence of boundary loading effects
Limitations:
- No inclusion of DVC woofers with individual coils (must be modeled with coils in parallel or series)
- No calculation of room-modes and their excitation by speaker positioning with respect to wall
- No calculation of folded baffles, baffles are assumed plane
- No calculation of the influence of amplifier source resistance or crossover resistances on the driver
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