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Can I confirm if FIR Designer M is required for exporting filters to Lake / IPX?
FIR Designer M can push settings to the Lake XP modules and the older Lake FIR 3-way module. FIR Designer can only push settings to the Lake FIR 3-way modules.
Is it possible to sideload filters (with the re-windowing) to other platforms that don’t support DTP (like Linea Research) or can this only be done via DTP.
You can make IIR+FIR presets for any/all brands. In the case of Linea Research, you’d create the channels for the preset in FIR Designer (or FIR Designer M) then manually copy the IIR filters to System Engineer and export the FIR filters to SFI files (for import into System Engineer).
The DTP windows, for some specific brands, handle brand specific sanity checks and transmission. For example, the Lake DTP window talks over a network to the Lake Controller, the Powersoft DTP window does model checks and exports in Powersoft XML format, the Marani DTP window talks over a network directly to Marani processors…. etc. The sideloading (with rewindowing) is provided in the DTP windows specifically to enable bringing existing FIR filters into those platforms.
If you already have a filter and want to change or rewindow it, start FIR Designer, don’t load any measurement on the import tab, load the existing filter on the Target tab, then use the workflow to design a new filter to match the Target. This will give an effectively identical result to the sideloading/rewindowing..
Regards,
EA Support
Since you will need to set 96 kHz delay in the miniDSP for the tweeter channel, uncheck “FIR output sample rate” on both channels and change the sample rates on the Setup tab to 96 kHz.
>> Also I’m sending you the FDS file by email so you can see how I’ve set up all the changes we’ve discussed so far.
The “FIR Phase Adjust” tab for the Tweeter has the 2nd filter (near 19 kHz) boosting. Change this to a cut, to meet the upper plot phase.
Also, on the Export tab for the Woofer channel, on the middle plot, check “Show FIR filtered loudspeaker” and notice how the response below about 300 Hz doesn’t closely match the ideal filter (before windowing to a filter length of 1700 samples). You could try using IIR filters to help in this frequency region; assuming your miniDSP can also load IIR filters.
Regards,
EA Support