HHB RADIUS3
Owner's Manual

fed into the HHB Radius 3, and also allows the tube stages to be driven to a variable degree. Each channel of the HHB Radius 3 has a triode tube stage positioned between the input circuit and the compression stage. Increasing the input gain pushes more signal level into the tube, thus generating more harmonic distortion and creating that special �tube sound�. At the same time the output level can be turned down to preserve the same level at the outputs, so a choice of sounds is available. For a more pronounced tube sound, turn up the input gain and reduce the output gain, and vice versa for a cleaner sound. Don�t be afraid to push the HHB Radius 3 hard! As well as driving the tubes harder, increasing the Input Gain control setting will also tend to push the signal towards and possibly over the compression threshold setting, so this control will have a pronounced effect on the amount of compression taking place, even in the Preset modes. The Input Gain control is active at all times, whether the Program control is set to Manual or Preset modes.

4.5 � OUTPUT GAIN This controls the level at the HHB Radius 3 outputs and again is variable between -20dB and +20dB. This control effectively acts like an output fader, and is very useful when recording direct to tape or hard disc through the HHB Radius 3. You may find that some digital recorders require a good deal of input level in order to register a 0dB reading on their meters. This is normal, since many digital recorders are designed to preserve headroom and keep the signal well below the 0dB clip point � thus preventing the recorder distorting. The HHB Radius 3 provides ample gain to drive digital recorders, but you may find that the Output Gain control has to be set to higher levels for this reason (see also section 3.5 on operating level). The Output Gain control is active at all times, whether the Program control is set to Manual or Preset modes.

4.6 � GAIN MAKE-UP While the subjective sound quality of the signal can be improved by compression, the overall signal level will be reduced when gain reduction is taking place. The Gain make-up control is designed to boost the compressed signal by between 0 and 20dB, in order to bring back the level to the same loudness as the uncompressed signal. Without this control, comparing the original and compressed signals becomes difficult, since there would be a level drop each time the compressor is switched in: therefore it is normal to adjust the Gain make-up control so that when the �compressor on� switch is activated, the audio signal remains constant in level. Unlike the Output Level control, the Gain make-up control is active only when the �compressor on� switch is engaged. Once the Gain make-up has been adjusted, use the Output Level control to set the overall output level of the HHB Radius 3. Assuming the compressor is activated, the Gain make-up control is active whether the Program control is set to Manual or Preset modes.

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