6
- Turn the NOTCH FILTER LEVEL control all the way up so you can clearly hear the attenuated frequency.
- Turn the FREQUENCY knob until you locate the frequency responsible for the sympathetic vibrations; the
NOTCH FILTER will suppress it.
- Now turn the LEVEL control to just below the point where the resonance sets in, thus ensuring that the filter
has a minimal effect on the overall sound.
It does take a bit of practice to get the hang of the NOTCH FILTER, as the human ear cannot readily identify
attenuated narrow bandwidths.
4.4 THE BASSBASE 600 AND FX PROCESSORS
The BassBase 600 is equipped with a parallel FX loop. The processed signal is mixed with the original signal
(i.e. the BassBase preamp signal) so that the original signal is still audible during the brief interruptions
caused by multieffects processor switching. The FX-MIX knob controls the dry/wet mix.
NOTE: As a rule of thumb, the best method for using signal processors is to set the device so that its output
is all effect, then to mix the original signal with the processed signal via the FX-MIX control. This will avoid the
tone degradation often caused by effects devices.
- Activate the FX loop via the FX SELECTOR SWITCH.
- Adjust the FX loop's level to your FX processor's input level. Press the -10 dB button for effects devices that
are designed for instrument levels. If the button is not pushed in, the signal remains at standard line level for
19" rackmounted processors.
- Adjust the blend between the original and processed signal via the FX MIX pot located on the front panel.
Towards DRY = more original signal, towards WET = more processed signal.
NOTE: Some signal processors cause phase cancellations that are detrimental to the overall sound
(washed-out tone, lower output level at the 12 o'clock position). In this case, turn the BassBase FX
control all the way to the right (WET). The effects loop then operates as a conventional serial loop, i.e.
the volume relationship between the original and the processed signal must be adjusted at the
processor.
