12
Setting Up Pre EQ (Parametric).
Turn on the parametric EQ switch (12). The blue light next to it will light up. Have the 3
level controls (15-17-19) adjusted so they are all centered. Switching the EQ in and out
now will have no effect. Start with adjusting the level control (17) and frequency control
(16). Normally you will want to cut the level back and then adjust the frequency control
to suit your taste.
To set up the bass boost move the frequency control (14) to about the nine o’clock
position. Then increase or decrease on the level control (15) to adjust how much bass you
need. You can then adjust the frequency control (14) to tune the kind of bass tone you
prefer. The frequency control extends down to frequencies lower than a low B and can
even boost basses with a low F# string. Take great care in not boosting low frequencies
excessively if you have a small speaker system.
The same goes for adjusting how much treble you like by using controls (16 & 17). The
frequency control (16) has a very wide frequency coverage (to cover all kinds of basses
including ones with ‘peizo’ and ‘lightwave’ pickups) and you will find that on some
basses with magnetic pickups, the upper end of this range is beyond the output of your
instrument. Many magnetic bass pickups have a frequency roll off above 4KHz! So
boosting at extreme high frequencies may cause more noise than signal.
Example of Frequency response from Pickup output of 1970 Fender Precision Bass.
The Graphic EQ.
This is a 12 band EQ that covers the full spectrum of a bass and beyond. This is used to
fine-tune your bass tone to perfection. Often playing in different venues will cause your
bass to sound different. This is partially due to the acoustics of the hall influencing the
low frequency waves that are coming from your speaker. Bass waves are large and room