Tiptop Z2040 4-Pole VCF - Manual (Page 3)

Welcome.
This quick start guide provides an introduction to the
operation of the Z2040 VC-Filter. The Z2040 4-Pole
VCF is an enhanced version of the famous SSM2040
filter chip. Both the Z2040 and the SSM2040 are
based on a discrete circuit design covered by a US
patent assigned to Oberheim Electronics in the 70’s.
Although the Z2040 is inspired by this design, the
Z2040 is not designed to be an exact reproduction
of the SSM2040 sound. The Z2040 significantly extends
the capabilities of this vintage sound.
In this manual we will go over the additional features
and characteristics of the Z2040.
Understanding the Gain knob and the
configurable VCA:
The Z2040 provides an Audio VCA that can be
configured at either the Input or the Output of the
Filter. The Z2040 comes with the VCA configured at the
Input. On the green printed circuit board are three
headers HD1 HD2 HD3 which are used to configure the
VCA position. Here are the three configuration:
(cont. on pg.4)
1 ) VCA disable: HD2 jumper is on one pin only /
HD1 pin 1&2 / HD3 pin 2&3
2 ) Input VCA: HD2 populated / HD1 pin 1&2 /
HD3 pin 2&3 (see Fig. A)
3 ) Output VCA : HD2 jumper is on one pin only /
HD1 pin 2&3 / HD3 pin 1&2 (see Fig. B)