12dB / Octave Linkwitz Riley Crossover

Posted on Jun 23, 2012

The circuit diagram of the filter section is shown in Figure 1. It is a completely conventional filter, and the component designations are the same as for the 24dB unit described in Project 09. It is designed primarily for 2-way electronically crossed over systems, such as adding a subwoofer or biamping an existing loudspeaker system.

12dB / Octave Linkwitz Riley Crossover
Click here to download the full size of the above Circuit.

The basic problem with Butterworth crossovers is that they have a 3dB peak at the crossover frequency, and this occurs when the outputs are summed electrically or acoustically. Using a filter with a Q of 0.5 means that the signal is 6dB down at the crosso

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