Purple Vibe v1.0.1
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16
Setup
You must first set the trim pots before you connect the DC jack. Start with these settings:
•
P1
(mix) at 12 o’clock
•
P5
(gain) at 12 o’clock
•
P6
(offset)all the way to the right
Now, connect the DC and start turning up P5 until the lamp is bright enough. Then, turn P6 to the left
until you really see the light turn off.
There is no exact scientific setting for the pots. It is all a question of taste. The settings are just a
suggestion so experiment at will. Do not forget you will need to use a light shield when testing the
PCB in an open enclosure. Without a light shield, the effect will not do its magic and the dry signal
will be dominant. Take your time finding the sweet spots. Also test the settings in conjunction with
the
Intensity
pot. It will take time to get it right but once you have it this effect will change your life!
Another method to set the effect up from scratch is as follows:
1.
Turn
Volume
(P2) an
Intensity
(P4) to the max and
Speed
(P3) and
Mix
(P1) to halfway.
2.
Turn the
Gain
(P5) until you get a moderate but not too bright burning lamp.
3.
Now you need to determine the floor value of the lamp by turning the
Offset
(P6). The higher
you set this the darker the floor value of the lamp will be. If you open the Offset all the way
up then the lamp will turn off at the bottom of the sweep. Turn it till you find your sweet
spot.
NB. There is a theoretical possibility that you blow your lamp when setting the gain to high when
using a 12V bulb. Be careful setting this pot!
In the original design there are no gain pot (
P5
) and offset pot (
P6
). Instead there are fixed resistors.
If you want to build it as the original (
not recommended
due to differences in lightbulbs), leave out
P5
,
P6
,
R55
. Change
R56
to 100k and
R57
to 200R. Short pin 3 to pin 2 on
P6
and pin 1 and 2 on
P5
.
Содержание Purple Vibe
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