Multi-Sub Optimizer Reference (page 8)

Filter Compatibility With Available Hardware

MSO supports many filter types, and not all of them are compatible with all available hardware. Before adding filters, you should check the information below to make sure the filters you choose are compatible with your hardware.

miniDSP compatibility

The miniDSP hardware is compatible with all the filter types offered by MSO. However, to ensure that the miniDSP filter behavior matches the MSO predictions, you must use the advanced biquad feature of the miniDSP support software. The mose efficient way to do this is to enable biquad support using MSO's Tools, Application Options, Hardware dialog. Specify the number of available biquads and the sample rate in this dialog.

After completing the optimization, use MSO's Save Biquad Text for This Channel menu item in each filter channel of the Config View. Then, for each channel, import the resulting text file into the miniDSP as an REW file. See the miniDSP documentation on advanced biquad programming for details.

Do not use the miniDSP software to enter the Q, center frequency and boost/cut parameters of parametric EQ filters, as miniDSP uses a different definition for filter Q than MSO does. This problem is eliminated completely when using the advanced biquad programming method.

Behringer Compatibility

The table below shows which MSO filter types are compatible with Behringer iNuke amplifiers and the DCX2496 electronic crossover.

MSO Filter Compatible Comments
Gain Block Yes -
Delay Block Yes -
Polarity Inversion Yes -
Parametric EQ Yes -
LPF Butterworth 12 dB/oct Yes -
HPF Butterworth 12 dB/oct Yes -
LPF Bessel 12 dB/oct Yes -
HPF Bessel 12 dB/oct Yes -
LPF Linkwitz-Riley 12 dB/oct Yes -
HPF Linkwitz-Riley 12 dB/oct Yes -
LPF Variable Q 12 dB/oct No -
HPF Variable Q 12 dB/oct No -
LPF Butterworth 18 dB/oct Yes -
HPF Butterworth 18 dB/oct Yes -
LPF Butterworth 24 dB/oct Yes -
HPF Butterworth 24 dB/oct Yes -
LPF Bessel 24 dB/oct Yes -
HPF Bessel 24 dB/oct Yes -
LPF Linkwitz-Riley 24 dB/oct Yes -
HPF Linkwitz-Riley 24 dB/oct Yes -
LPF Butterworth 48 dB/oct Yes -
HPF Butterworth 48 dB/oct Yes -
LPF Linkwitz-Riley 48 dB/oct Yes -
HPF Linkwitz-Riley 48 dB/oct Yes -
LF Shelf Order 1 Yes Use LS6
LF Shelf Order 1 (Alt) Yes Use LS6 with LF corner from filter report
HF Shelf Order 1 Yes Use HS6 with HF corner from filter report
LF Shelf Order 2 Yes Use LS12
LF Shelf Order 2 (Alt) Yes Use LS12 with LF corner from filter report
HF Shelf Order 2 Yes Use HS12 with HF corner from filter report
LF Shelf Order 2 Variable Q No -
LF Shelf Order 2 Variable Q (Alt) No -
HF Shelf Order 2 Variable Q No -
LF Shelf Linkwitz Transform No -
HF Shelf Linkwitz Transform No -
LF Shelf Linkwitz-Riley Fourth-Order No -
All-Pass First-Order No -
All-Pass Second-Order No -

Behringer filter compatibility table