Dynaudio Core Series User Manual page 24

caused by room modes. Room modes occur at specific low frequencies that have wavelengths that are equal to
or multiples of the dimensions of the listening room.
For example, if the listening room is 4 metres long, there may be a room mode at 43 Hz since its wavelength is
about 8 meters. What this means is that for this frequency, the room response will change dramatically depending
on the position of the listener and the monitor. You may hear more of this frequency or less of it depending on the
listening position in the room. Modes can be formed from all dimensions of the room; length, width, and height so
it can get complicated.
Try moving the positions of the monitors and also the listener to see if you can improve the overall bass response.
This will take some experimentation time and is often surprising when the best placement is found. Another
solution is to place sound absorption designed for low frequencies in the most effective places to reduce the
effect of room modes (often in the corners).
Many manufacturers make sound-absorptive devices called bass traps that are designed to be placed in or near
corners and will reduce the amount of reflected low-frequency energy in the room. By dampening the resonance
of the modes, the low-frequency response of the room may be smoothed out.
When placing bass traps, always check the resulting frequency response curve either with pink noise and an RTA
or by listening to your favourite reference material to see how this affects the sound.
Through this process of trial and error, you will arrive at the best position and treatment for your environment. You
will get the most out of your Dynaudio Core monitor system, allowing you to create music and sound that
translates to as many other listeners as possible. Enjoy!
24 Core User manual