Lyngdorf Audio RP-1 owner manual Crossover Frequency, Filter Type

Crossover Frequency

Crossover freq.

Crossover Frequency is only available when Routing has been setup.

The Crossover Frequency can be selected anywhere between 40 – 9999Hz.

It is very difficult to give exact guidelines to setting a suitable crossover frequency, filter type and order since this depends on the exact drivers and configurations. Therefore, the following recommendations should be seen as a good starting point only.

In general, the recommended crossover frequency between (sub)woofers and main speakers is be- tween 200 - 400 Hz.

By using a high crossover frequency, the rear wall quarter wavelength reflection is removed from the main speakers.

If a Lyngdorf Audio boundary woofer is used in a 2+2 set-up, a crossover frequency of 400 is recom- mended due to the high bandwidth of the boundary woofer.

For conventional active subwoofers with built in low pass filter the recommended crossover frequency is the upper low-pass frequency of the subwoofer.

If at all possible, the low pass filter in the subwoofer should be bypassed. Due to the quarter wave reflection from the rear wall corresponding to the depth of the subwoofer cabinet we recommend an crossover point at approximately 200 Hz. You might experiment with turning the subwoofer so the driver faces the wall in a distance of 5 to 10 cm. This will increase the bandwidth of the subwoofer.

However, due to the limited bandwidth (frequency response) of most conventional subwoofers you might find it necessary to choose a lower crossover frequency.

When ‘building’ active speaker systems it is recommended to use the original crossover point(s) used by the manufacturer. Due to the short wavelengths of the mid/high frequencies it is essential that both crossover frequency, filter type and order as well as delay is set correctly. Therefore, creating filters for active speakers is an iterative process that requires several critical listening sessions in order to achieve seamless integration of the different speaker drivers.

Filter Type

Filter Type

Filter Type is only available when Routing has been setup.

It is possible to choose from two different Filter Types in this menu.

LiRi: (Linkwitz Riley) 2, 4 or 8 order.

Butw: (Butterworth) 1, 2 or 4 order.

In a 2+2 set-up (main speakers + Lyngdorf Audio boundary woofers) we recommend using a fourth order Linkwitz Riley filter.

In set-ups using conventional active subwoofers – again due to limited bandwidth – we recommend us- ing a second order butterworth filter.

In active speaker systems it is recommended starting with a fourth order Linkwitz Riley filter.

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