Generally speaking the satellite/subwoofer crossover frequency should be as high as possible in order to benefit from spatially optimized, monophonic bass. This allows a crossover frequency of 150Hz (300Hz / 2 = 150Hz) or lower.
The upper cut-off point for the subwoofer extends beyond 300Hz. This allows a crossover frequency of 96Hz (48Hz * 2 = 96Hz) or higher. The lower cut-off point for the top surrounds is at around 48Hz. This allows a crossover frequency of 106Hz (53Hz * 2 = 106Hz) or higher. The lower cut-off point for the surround speakers is at around 53Hz. This allows a crossover frequency of 80Hz (40Hz * 2 = 80Hz) or higher. The lower cut-off point for the left, right and center speaker is at around 40Hz. The highest usable crossover frequency is roughly 1 octave below. Then find the high frequency cut-off point for the sub. The lowest usable crossover frequency is roughly 1 octave above. Examine the "Spectrum (Corrected)" curve for each satellite speaker (or group of satellites) and locate the frequency where the corrected response curve starts to fall off from the target curve at low frequencies. The crossover frequency in this example is 100Hz.Īfter measuring your speakers or opening a previously saved project go to the "Filter Design" tab. Here's a graph showing how the low frequency portion (red) and the high frequency portion (blue) ideally combine (green). The overlapping frequency region where there is significant interaction typically extends from about 1 octave below the crossover point (half the frequency) to about 1 octave above (double the frequency). both the subwoofer and the satellite speaker contribute to the response around the crossover frequency. High and low pass filters found in common AVRs aren't brick wall filters, i.e. The crossover point is the frequency where the resulting two frequency response curves cross each other. Then a high pass filter is applied to the channel that should carry only higher frequencies (signal going to a satellite speaker) and a low pass filter is applied to the channel that should carry only lower frequencies (signal going to the subwoofer). First the signal is split into two different channels. Basicsīass management in AVRs provides crossovers that separate low and high frequencies. NAD T758v3), Mac or PC capable of running Dirac Live 2.5 or later.
RequirementsĪVR with Dirac Live 2 room correction (e.g.
This tutorial shows how to set crossover frequencies in an AVR/pre-processor for subwoofer and satellite speakers based on data captured by Dirac Live 2 room correction.
Last update Setting crossovers in an AVR/pre-pro with Dirac Live 2 room correction Note: This guide also applies to Dirac Live 3.