DOEPFER A-107 Manuel - Page 7

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3 Filter

Operating this button calls up the display mode that

shows the filter type of the currently selected step of

the chain in the display.

To select another filter type the Value control 6 has to

be operated. A detailed list of all filter types with

frequency response curves is available in chapter 7.

The filters are organized in two filter groups

with 18 filters each. To obtain a continuous

morphing (soft transition) for all filters within

a chain only filters from the same group have

to be used. If two succeeding filters are from

different groups a short "click" will be heard

as capacitors have to be switched between

the filter groups. Of course this characteristic

can be used intentionally for special effects.

How to program a filter chain:

D Make sure that no external control signals are fed

into the inputs Step CV 7, Step Clock 8 and Step

Reset 9. These signals would disturb the pro-

gramming procedure as they change the current

step within the chain !

System A - 100

D Operate the Step button 2 and select the desired

step (e.g. S01) within the current filter chain

(working buffer) by using the value control 6.

D Operate the Filter button 3 and select the desired

filter type (e.g. F13) for the current step by using

the value control 6.

D Select the next step (e.g. S02) by operating the

Step button 2 and assign the filter type for this

step as described above

D Continue until all steps are programmed. It is not

necessary to program all 32 steps of a chain. If

you e.g. want only 5 different filters you may only

program the steps 1...5. But you have to pay

attention that only these programmed steps are

addressed later e.g. by the external CV (use the

attenuated CV input !)

If you want to keep the chain in the working

buffer before you modify the settings you have

to store the working buffer into one of the 64

non-volatile memories (see item 5 PROG).

The working buffer is erased during power off.

If you want to keep the working buffer you have

to store it into one of the 64 non-volatile memo-

ries (see item 5 PROG). After power on chain

#1 is called up from the non-volatile memory.

Multitype Morphing Filter

A-107