Hi, I have a Dr. Z Air Brake and am wondering if the manual has a mistake. It says the Bedroom level has -7.2dB down to -30dB Attenuation. But if the steps 1-4 are a difference of 1.8dB there would be the following situation:
Step 0: 0dB
Step 1: 1.8dB
Step 2: 3.6dB
Step 3: 5.4dB
Step 4: 7.2dB
Bedroom: ~ -9dB down to -30dB
Between Step 4 (-7.2dB) and Bedroomlevel at min Attenuation (turn to right) there is some attentenuation. I can hear it and if I open it, i can see that the bedroom level uses the total length of the resistor whereas Step 4 has a slider.
What do you think?
Dr. Z Carmen Ghia, Dr. Z Air Brake, Dr. Z Brake Lite
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