6
USER TIPS FOR THE DB 680:
Input Gain:
Set this control between 10 and 1 o’clock, depending on the output level of your bass. If
you have active electronics on your bass, you can still use the passive input on the DB
680. If you hear distortion, you are overdriving the first input stage. In that case, set the
input selector to active. This position will pad the input on the preamp.
Master Volume:
Depending on the power amp you are using, nominal output level is achieved by setting
this potentiometer at approximately 12 o’clock. This pot controls the unbalanced mono
outputs only.
High and Low Masters and Frequency Control:
These volume pots control the output levels of the high and low outputs when bi-amping.
The frequency control sets the frequency at which the highs and lows are separated and
sent to the different outputs. This frequency, the crossover frequency, is set by the
characteristics of your speakers and amps, but most players set it around 500 Hz.
F/X Loop:
This is a parallel loop, which means that your F/X are blended in with your main (dry)
signal. Use the send control to send the right amount of level to your effect and then use
the blend control to add in the desired amount of effect to the dry signal.
EQ:
Start with all the EQs set at 12 o’clock. Set the deep switch in the middle position. In
this position there is no bass boost. Set the bright switch in the left position, which is no
treble boost.
Deep Switch:
This is a two position switch which provides 3db of broadband boost at 30 Hz when set to
the position. It provides 8db of boost when set in the ++ position.
Bright Switch:
Set at 5 kHz. Use this switch to add sheen to the entire range of your bass. Use this
switch in conjunction with the treble potentiometer.