RH450 / RH750: Frequency mapping on EQ controls

Question

How are the frequencies mapped to the EQ controls?

Answer

The mapping is as follows:

  • Bass Freq range: 71 Hz to 1120 Hz (default: 280) Bass Gain range: -24 dB to +15 dB (Shelving type)
  • Low Mid Freq range: 100 Hz to 1600 Hz (default: 400) Low Mid Gain range: -24 dB to +15 dB (Fixed 2.1 oct.)
  • High Mid Freq range: 200 Hz to 3150 Hz (default: 800) High Mid Gain range: -24 dB to +15 dB (Fixed 2.1 oct.)
  • Treble Freq range: 400 Hz to 6300 Hz (default: 1600 for RH450 and 4000 for RH750) Treble Gain range: -24 dB to +12 dB (Shelving type)

Below is a detailed mapping per knob position. 

Knob Pos.BASSLO-MIDHI-MIDTREBLE 
-1271100200400Hz
-1180112224450Hz
-1090125250500Hz
-9100140280560Hz
-8112160315630Hz
-7125180355710Hz
-6140200400800Hz
-5160224450900Hz
-41802505001000Hz
-32002805601120Hz
-22243156301250Hz
-12503557101400Hz
Center Pos.2804008001600Hz
13154509001800Hz
235550010002000Hz
340056011202240Hz
445063012502500Hz
550071014002800Hz
656080016003150Hz
763090018003550Hz
8710100020004000Hz
9800112022404500Hz
10900125025005000Hz
111000140028005600Hz
121120160031506300Hz

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