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«CoP» Closed or Ported
The HEDD Type 20 MK2 and Type 30 MK2 can be used in either closed or in ported
mode. These are two fundamentally dierent systems that are available for the user to
compare and choose. There is no denite better between the two systems. We
recommend to compare carefully to nd the optimal option for your environment and
listening habits.
Switching Between Closed and Ported
By default, the HEDD speakers are "ported." This means that the bass port is open. To
switch to "closed" mode, please follow the steps below.
1. Insert the included HEDD plugs with help of the HEDD screw to close the ports.
Make sure that the screw is facing outwards!
Push the plugs deep into the bass ports. Make sure that you
can still reach the screw comfortable with your ngers to
pull it out. The plug should not go deeper than when the
bass port starts to bend and the resistance increases. Once
inserted, feel free to unwind and remove the screw.
2. Switch the knob on the backpanel of your monitors to Closed mode.
Please note that the headroom in Closed Mode is limited compared to Ported Mode.
We highly recommend to lower the volume before switching.
from Closed to Ported
To switch back to Ported Mode, stop the audio
playback, wind the screw back into the plug, gently
pull the plug back out again and change the rotary
switch on the backpanel to Ported.
