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Basic REW ( Room EQ Wizard) with D&D8Cs

Purité Audio

Purité Audio

Trade: Purite Audio
A very basic REW ‘how to’ the speakers measured were D&D8Cs which integrate with REW but the basic process is the same.


Download REW , most users recommend a 60dB scale on the vertical axis and 20-20kHz on the horizontal.
Press measure on the top left of the tool bar, as I mentioned the 8Cs are integrated with REW you just set there volume ro -30dB ( they come with this setting as default) which is the correct level for REW.
Using an ordinary loudspeaker/system you will have to use the ‘check volume’ feature on REW this will tell you when the replay volume is loud enough.
The software lets you select ‘left’, ‘right’ and ‘left+right’ together.
I always measure the left channel first, you need to ensure that the input of your laptop is set to the measurement microphone not the internal mic, likewise the output of the PC needs to be set to your device rather then the internal speakers.
You should hear the sweep tone and a plot not unlike the one above.

Keith
 
Once you have the measurement ( shown above) hit the ‘EQ’ button which among the buttons on the header and this page opens,


Keith
 
On the right hand side their are the ‘Equaliser’,’Target Settings’ and ‘Filter Tasks panes, I picked the 8C as equaliser but there are a whole list of your particular device isn’t there just choose ‘generic’.
In ‘Target Settings’ there is a list of parameters you can adjust but initially you only need to click ‘calculate target level from response’
In the next pane ‘Filter Tasks’ again initially all you have to click is ‘match response to target’.
Keith
 
To see the filters settings REW has generated open the ‘Eq Filters’ window,

Where you can see the Frequency, Gain and ‘Q’ of each filter, you can then copy and paste these into your device/software, for example Roon or RME ADI dac etc.
NB remember REW only generates the filters it doesn’t implement them.
The Dutch&Dutch REW integration allows you to send the generated filters directly to the 8Cs simply by pressing the ‘send filters to room profile’ button which is neat.
Then repeat the process for the other speaker.
Keith
 
This is purely for 8C users, but once you have pressed the ‘send filters’ button the filters are automatically sent to whichever 8C you have specified and they appear on the speakers app,

You can also look at and adjust each filter,


It is extremely neat.
Keith
 
As well as the 24 inbuilt PEQ channels, there is also a ‘voicing’ or tone control facility, you can adjust sub bass, bass and treble or add your filters of choice.


Just added .5dB to demonstrate.
Keith
 
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