Lyngdorf Audio Room Perfect TDAI 2200, Owner'S Manual

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Crossover frequency

The crossover frequency can be selected anywhere between 40 – 9999Hz.

It is very diffi cult to give exact guidelines to setting crossover frequency, fi lter type and order since this 

depends on the exact drivers and confi gurations. 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 refl ection  is removed from the 

main speakers.

If a Lyngdorf Audio corner woofer is used in a 2+2 set-up, a crossover frequency of 400 is recommended 

due to the high bandwidth of the corner woofer.

For conventional active subwoofers with built in low pass fi lter the recommended crossover frequency 

is the upper low-pass frequency of the subwoofer.

If at all possible, the low pass fi lter in the subwoofer should be bypassed. Due to the quarter wave 

refl ection 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 fi nd 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, fi lter type and order as well as delay is set correctly. Therefore, creating fi lters 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

It is possible to choose from two different fi lter 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 sp Lyngdorf Audio corner woofers) we recommend using a fourth order 

Linkwitz Riley fi lter.

In set-ups using conventional active subwoofers – again due to limited bandwidth – we recommend us-

ing a second order butterworth fi lter.

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

Crossover freq.

Filter Type