Source Audio Soundblox Pro Bass Envelope Filter User Manual

Page 24

24 | Backpage Parameters

Octave Extension (OE)
This Backpage parameter offers a choice between a seven or eight band
equalizer. The illumination of the bottom most

LED

signifies the selection

of the factory default 7-band

. The illumination of the second

LED

from the bottom signifies the selection of an 8-band

. The additional

8th

band is one octave above the highest band in the default setting

(8 Kilohertz).

Once the 8-band

has been selected and the Backpages mode

has been exited, the additional 8K band can be accessed by scrolling
the

all the way to the right, then hitting the right arrow button one

additional time. Each frequency band setting will shift one position to
the left opening access to the

band in the right most column.

Note: This is a global setting and will not be saved per preset.

Volume (VA)
Adjusts the pedal’s final output signal level. It is possible to change the
factory default output level by +/-

dB in steps of 1 dB.

Q (Q)
First, let’s define what

is. In the early days of radio, the sharper the

band-pass filter in the tuner section was, the better the radio could tune
in a desired station and reject other stations at nearby frequencies. So
the sharpness of the filter was termed “quality”, or

Adjusting the Q parameter in the

BEF

Pro multiplies all the Q’s in the

filter definition. Increasing the Q’s of the filters results in narrower and
sometimes higher peaks in the frequency response. In general, it will
sound wetter, although it is certainly possible to overdo it—the highest
Q settings are extreme. Notches in the frequency response, however,
will become less evident with higher Q’s (because they will become nar-
rower.). Decreasing Q will create a dryer, less effect driven tone.

The center position of the

LED

display represents a value of

1.0

, or no

change to Q. Going up to higher values can reach a factor of

. Lower

values go to

.25

. Higher Q’s may require a volume reduction on the

Backpage.