> I was wondering if it were possible to direct couple the A-112 so > as to use it to record and playback control voltages, > modulations, lfos etc... > > Thanx, > > Tony The input of the A-112 is already DC coupled. For DC coupling of the output one has to short the 100nF capacitor C11. From the schematics I'd expect a negative DC offset of about -2.5V and an inverted output as the current output of the DAC is converted into a voltage by an opamp inverter without input resistor. You will have to add another inverter (e.g. A-175 or A-138c) to obtain a non-inverted signal and a positive (or with A-138c adjustable) offset. Best wishes Dieter Doepfer
Message
AW: [Doepfer_a100] DC coupling an A-112
2007-12-13 by hardware@doepfer.de