8 Sep 2026

FIR Designer & FIR Designer M v4.7 | What’s New

FIR Designer DSP design software version 4.7 is now available. New features include a JBL Professional IIR filter mode, support for brand-specific filter limits and Supplementary Response saving.

JBL Professional IIR filter mode in FIR Designer M

JBL Professional IIR filter mode

Eclipse Audio has collaborated with JBL Professional to include a JBL Professional IIR filter mode in FIR Designer & FIR Designer M, specifically for for EQ’ing SRX900 series loudspeakers.

The JBL Professional filter emulation in FIR Designer ensures that IIR filters, used to configure DSP functions for EQ, will produce consistent results when used in the group EQ for SRX900 series loudspeakers. Brand-specific IIR emulation is necessary for audio optimization because some filters produce different results when used across processor brands. JBL Professional and Eclipse Audio have worked together to ensure that the JBL Professional IIR filter mode in FIR Designer interprets filter parameters in exactly the same way as Performance (JBL Professional’s control software).

To deploy the IIR filter based EQ (developed in FIR Designer) into the Performance software, use the EQ View within Tune Mode (Learn more).

The addition of this new mode brings the number of different IIR supported modes in FIR Designer to 18, including AFMG Speakerlab, Biamp Tesira, Blaze Audio, Bose Professional, BSS, Fohhn Audio, Lake, Linea Research, Marani, Pascal Audio, Powersoft, Q-SYS, RAM Audio, RMS-Acoustics, Storm Audio, Symetrix & generic.

Learn more about IIR brand emulation.

Brand-Specific Filter Limits

Some audio brands specify how many IIR filters can be used in their products, as well as which filter types are supported. FIR Designer’s branded IIR modes now take these product-specific requirements into account.

When a brand has specified filter restrictions, the available filters displayed in the IIR tab of FIR Designer will reflect only the options for that brand.

This helps ensure that custom DSP designs created for a particular brand use only the number and types of IIR filters that its products can actually accept.

Select the new #Filters button to see details of the filter limits applying to all (or specific) products offered by the selected brand.

If the #Filters button does not appear for a selected brand, it means that particular brand hasn’t specified limits on the number (or types) of filters that can be used in a custom DSP design.

Brand-specific IIR filter limits in FIR Designer M
Supplementary responses window in FIR Designer M

The Supplementary Responses view in FIR Designer M

Supplementary Response Saving in Project Files

The Supplementary Responses windows in FIR Designer M and FIR Designer allow the main workflow processing — gain, polarity, delay, IIR and FIR filters — to be applied to additional uploaded sets of measurements. (For example, loudspeaker measurement sets captured at different angles relative to the main listening axis.)

Supplementary Responses was originally designed purely as a visualization tool, providing a useful way to check performance of a specific DSP design against an alternative set of measurements, and references to the uploaded responses were not saved as part of the FIR Designer M system or FIR Designer project.

In response to user requests, FIR Designer M and FIR Designer 4.7 now save Supplementary Response measurement filenames, locations and settings within the system and project files.

When a saved system or project is reopened, its Supplementary Responses are automatically available again, making it easy to continue evaluating and refining the DSP design using the same set of reference measurements.

This provides greater convenience and consistency, particularly for projects where multiple measurements are used to evaluate loudspeaker performance and optimize DSP designs over time.

See a video tutorial about using the Supplementary Responses view in FIR Designer.

Get all details about the latest update:

FIR Designer M Release Notes | FIR Designer Release Notes

7 Aug 2026

SpeakerMeasure Update | What’s New in v1.1

Eclipse Audio’s SpeakerMeasure software automates the AES75 Measurement procedure for determining loudspeaker maximum linear sound levels.

First introduced in 2023, the updated version 1.1 is now available, and remains 100% free to download with no time limits. (Both macOS & Windows versions are available.)

The latest update includes:
– robustness improvements to the transfer function calculation for some signal conditions
– minor user interface updates and fixes
– separate downloads for M series and Intel macs.

Download the latest version of SpeakerMeasure

SpeakerMeasure update - v1.1 now available for AES75 loudness testing

28 May 2026

New Video Tutorial: How to use the FIR Designer Gain/Polarity/Delay Tab

In this tutorial, we explain how to use the ‘Gain/Polarity/Delay’ tab in FIR Designer M, the third step in the workflow for designing custom DSP and FIR filters for loudspeakers and audio systems.

The GPD tab is used to adjust gain, polarity, and alignment delay that will be used in the target proccessor, particularly for multi-way designs. For this reason, this video is based on FIR Designer M (ie. FIR Designer “Multi-way”) rather than the single-channel FIR Designer. The GPD tab in less relevant for single-channel DSP designs, although the GPD tab in FIR Designer is still useful for mulit-way projects built from several separate single-channel projects across multiple independent channels.

This video demonstrates how to:

  • Align low-frequency and high-frequency loudspeaker drivers using gain, polarity & delay parameters
  • Compare driver phase and phase slope through the crossover region
  • Use the ‘Second View’ window to monitor filtered responses while working in the GPD tab
  • Optimize crossover summation and reduce excess phase rotation between drivers

This video is the third in a new-for-2026 tutorial series, with each video focused on a single FIR Designer workflow tab (it follows the Target Tab tutorial). These new tutorials will gradually replace several older tutorial videos, ensuring coverage of the full feature set available in current FIR Designer versions.

8 May 2026

FIR Creator EX & FIR Creator updates | What’s New

FIR Creator EX version 2.3 and FIR Creator version 2.1 DSP design software updates are now available, featuring a range of enhancements and functionality previously implemented in FIR Designer.

FIR Creator EX version 2.3 screenshot - audio DSP software



CLIO SPL files can now be imported, adding to an already comprehensive list of supported audio measurement formats.

A 93.75 kHz sample rate, to support FIR filters for Hypex DSP’s, expands the list of available sample rates to five in FIR Creator EX and four in FIR Creator.

New plot zooming controls make it easier to focus on specific frequency and level ranges, making small response details easier to see and allowing for more precise adjustment. Horizontal zooming is available on the ‘Import’ tab IR and ‘Export’ tab FIR filter. Vertical zooming is available on the ‘Export’ tab FIR filter.

Drag locking of freq & gain or freq & phase is now available when using the mouse to adjust filter shapes. Filter shaping is more precise, faster and easier with movements optionally limited to one parameter.

Filter list tables can now be sorted by frequency. Simply click the Freq column header to sort filters in ascending or descending order on the Target, IIR Filters, Mag Adjust, Phase Adjust, Auto Mag and Auto Phase tabs.

A Phase-only option has been added to the Import tab. Choosing this option will flatten out the magnitude of uploaded measurements before their subsequent use in DSP design.

In response to several user requests, on the ‘Phase Adjust’ tab, the combined phase can now be optionally displayed on the lower plot.

FIR Creator EX Release Notes | FIR Creator Release Notes
23 Mar 2026

New Video Tutorial: How to use the FIR Designer Target Tab

In this tutorial, we explain how to use the ‘Target’ tab in FIR Designer, the second step in the FIR Designer workflow for designing custom DSP and FIR filters for loudspeakers and audio systems.

The target tab is used to define the desired magnitude and phase response for your loudspeaker or DSP-enabled audio device before FIR filter, or mixed IIR+FIR filter design.

The creation of a custom target response is demonstrated through the selection & combinination of up to four contributing components:

  • Curve – Define a magnitude or EQ profile using slope segments and a base shelf.
  • Magnitude – Create a magnitude profile based on common filter prototypes. (Choose from parametric and shelf filters, low-pass and high-pass crossover filters, and unique Keel-Horbach crossover responses.)
  • Phase – Create a phase profile using common first-order and second-order all-pass filters or our unique ‘fourth-order’ parametric phase filter.
  • File – Load an impulse response or transfer function measurement to incorporate into the target response (for example, when matching to the response of another loudspeaker). See all supported file formats.

Saving target presets for reuse in other projects and exporting the magnitude response as a Smaart® target file are also covered.

This video is the second in a new tutorial series, with each video focused on a single FIR Designer workflow tab. These new tutorials will gradually replace several older tutorial videos, ensuring coverage of the full feature set available in current FIR Designer versions.

22 Jan 2026

FIR Designer & FIR Designer M v4.6 | What’s New

FIR Designer DSP design software version 4.6 is now available. This latest update includes several new additions requested by users.

A new 93.75 kHz sample rate, to support FIR filters for Hypex DSP’s, expands the list of available sample rates from eight to nine.

When designing custom DSP, the import measurement file & export sample rates don’t have to match. (i.e. you can import measurements in one sample rate, and export filters in another.)

Sort filters by frequency in FIR Designer

Filter tables can now be sorted by frequency.

Simply click the Frequency column header to sort filters in ascending or descending order on the Target, IIR Filters, Mag Adjust, Phase Adjust, Auto Mag and Auto Phase tabs.

Copy DSP settings across channels in FIR Designer M

DSP settings can be copied across channels in FIR Designer M, eliminating the need to configure each channel individually. Once your tab settings are set up for a single channel, you can use the new Copy/Paste function to duplicate all settings, or a selected subset, to any number of other channels.

Reference response loading in Second View window
View reference response on plot in FIR Designer M

Second View window now includes a tab for loading a Reference Response measurement, which can be used as a reference when designing EQ based on other measurements. The reference response plotline appears behind other plots in the ‘Second View’ window. Its magnitude can also be optionally inverted, which is helpful when trying to mitigate a response rather than match it.

FIR Designer M Release Notes | FIR Designer Release Notes
13 Jan 2026

New Video Tutorial: How to use the FIR Designer Import Tab

Measurements from loudspeakers (or other audio devices) are the foundation of the custom DSP & filter design process in FIR Designer. Correctly importing and time-aligning your measurement ensures accurate phase behaviour and optimal results in all subsequent DSP design stages.

Data from a wide range of audio measurement tools can be used in the Import tab (see all supported import file formats).

Our new Import tab tutorial demonstrates how to:

  • Manually load a loudspeaker measurement into FIR Designer
  • Adjust time alignment of the measurement to remove bulk delay
  • Get the phase response time in a range that can be used in subsequent tabs
  • Use the various settings & options available on the Import tab

This video is the first in a new tutorial series, with each video focused on a single FIR Designer workflow tab. These new tutorials will gradually replace several older tutorial videos, ensuring coverage of the full feature set available in current FIR Designer versions.

Using SMAART© Measurements?

Measurements captured in Rational Acoustics’ SMAART software can use FIR Designer’s built-in ‘Smaart Control‘ dialog to send measurement data to the Import tab.

Live-stream either Spectrum or Transfer Function Smaart measurements directly into the Import tab instead of having to manually load saved measurements from a file.

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10 Sep 2025

Design Bose Professional EQ Filters in FIR Designer

Bose Professional EQ in FIR Designer Bose IIR mode
Bose EQ in FIR Designer: Bose Professional IIR Mode

FIR Designer DSP software can now be used to design and load EQ to Bose Professional Sound Processors and PowerShareX, PowerShare & PowerMatch amplifiers.

The new ‘Bose Professional’ IIR filter mode in FIR Designer v4.5 (& FIR Designer M) enables the design of custom EQ for loading into the IIR filter-based signal processing blocks (PEQ blocks) in Bose’s ‘ControlSpace Designer‘ professional configuration & control software.

The Bose filter emulation in FIR Designer ensures that common IIR filters, used to configure DSP functions for EQ, will produce consistent results when used in Bose products. Brand-specific IIR emulation is necessary for audio optimization because some filters produce different results when used across processor brands. Bose and Eclipse Audio have worked together to ensure that the Bose IIR filter mode in FIR Designer interprets filter parameters in exactly the same way as ControlSpace Designer. (Learn more about IIR brand emulation.)

The Bose Professional IIR filter mode contains options for parametric, low-shelf, high-shelf, notch and Butterworth (1st & 2nd order filters) high-pass and low-pass filters; all of which can be saved & exported as a *.peq file format for upload into a ControlSpace Designer PEQ block. (FIR Designer also contains Bose-emulating Bessel and Linkwitz-Riley filters, although those are currently not supported in PEQ blocks.)

Bose EQ Conversion

IIR filters developed for other audio brands can now also be converted for use in Bose processors and amplifiers (and vice-versa), using the IIR Reference Editor in FIR Designer. Including Bose Professional, there are currently sixteen branded IIR modes available:

(The generic mode is for use with processors without their own branded mode. Learn more).
IIR filter modes in FIR Designer, including Bose Professional
Brand-specific EQ options: IIR filter modes in FIR Designer

In addition to filter conversion between brands, a measurement (in a supported file format) of an IIR response from any processor can be loaded into the ‘Target’ tab of FIR Designer , and the Bose filters can be set to match it in the ‘IIR Filters’ tab.

Convert Symetrix filters to Bose filters
Using the Reference Editor to convert Symetrix filters to Bose
Filter loading instructions from FIR Designer into Bose ControlSpace Designer
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FIR Designer M Release Notes | FIR Designer Release Notes
2 Aug 2025

Dark Mode Added to FIR Creator

FIR Creator dark and light mode screenshots

FIR Creator users can now design custom DSP in either a light or dark themed interface.

Our popular ‘Dark Mode’ option in FIR Designer , FIR Designer M & FIR Creator EX has now been rolled into FIR Creator as part of the version 2.0 update.

To switch between light and dark themes, in Preferences, change the “Use dark mode” setting and restart the application. (This video demonstrates the same process in FIR Designer.)

Additional changes include:

  • Existing plot line color customization has been expanded to allow adjustable plot line thickness, which improves visibility of some plot colours, especially when viewed against a dark background.
  • Delay distance on the Import tab can now be viewed in either mm or inches. (This uses a new ‘Speed-of-sound’ setting within Preferences.)
  • Import tab now has a “magnitude only” option – for ignoring a measurement’s phase – and the impulse response can now be viewed out to a larger range of ±5.
  • When using a response from file as a Target, “magnitude only” and “phase only” options are now available, giving more flexibility when matching loudspeakers or attempting to achieve a specific target.
  • A manual “check for updates” option is available to access the latest program downloads, even when already using the latest version.

The latest FIR Creator update is available free to existing licensees on version 2 or above. Users of earlier versions may be able to update at a reduced cost. (Discount depends on time elapsed since original purchase; see here.)

Download a free demo to try it out!

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22 May 2025

New FIR Designer M perpetual license offers alternative to ongoing subscription

FIR Designer M new perpetual license option

FIR Designer M, Eclipse Audio’s multi-channel custom DSP design software, is now available to buy as a perpetual (one-time-payment) license for USD$979 (plus tax). Until now, all purchases of FIR Designer M were subscription-only, requiring an annual recurring payment to stay active.

Subscription vs Perpetual Licenses

A perpetual license of FIR Designer M is a one-time purchase. The software can be used indefinitely with no additional payments, however the feature set is ‘frozen’ at the time of purchase, with no access to any updates or new features. Any necessary bug fixes will be provided.

To upgrade to a newer FIR Designer M version in the future, perpetual license holders will need to purchase a new license. (Credits may be available for upgrades.)

A subscription license of FIR Designer M requires an annual recurring payment to stay active. The feature set will expand over time, as license holders receive ongoing free updates to the latest version, including all new features & improvements. We will ensure the software remains compatible with all future operating system versions.

Our development efforts will continue to be focused on regularly updating FIR Designer M to expand & improve functionality. Feature requests welcome!

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