[sdiy] Replacing DACs

[john mahoney]

On behalf of the Clueless Hardware Hackers Association (founded just a
second ago), thanks! :-)

But, wait... I was thinking through an inverter again. This is digital to
analog... So, how about grounding the input pins of the undesired low bits,
thus forcing their ouputs low. This assumes that the DAC inputs accept
signals of either High or Ground ("higher ground," ha ha).
--
john


----- Original Message ----- 
From: "Harry Bissell Jr" <harrybissell at prodigy.net>
To: "john mahoney" <jmahoney at gate.net>; "nN AAt e e"
<timexheater at comcast.net>; <synth-diy at dropmix.xs4all.nl>
Sent: Friday, March 12, 2004 2:23 PM
Subject: Re: [sdiy] Replacing DACs


> shorting bits to ground would be bas, electrically.
> you probably will damage the gear.
>
> It might be possible to add series resistors to the
> low bits... preventing the driver chip from frying
> from
> the direct short... many other ways exist
>
> H^) harry
>
>
> --- john mahoney <jmahoney at gate.net> wrote:
> > nate,
> > You needn't replace a DAC just to drop the bit
> > resolution. Grounding the
> > desired low bits should suffice. To make a 12-bit
> > DAC act like an 8-bitter,
> > just ground the 4 low bits (or switch them out of
> > the circuit).
> >
> > Logically, the above is accurate. Electrically? I'm
> > not responsible if you
> > damage your gear.
> > --
> > john
> >
> >
> > ----- Original Message ----- 
> > From: "nN AAt e e" <timexheater at comcast.net>
> > To: <synth-diy at dropmix.xs4all.nl>
> > Sent: Friday, March 12, 2004 4:49 PM
> > Subject: [sdiy] Replacing DACs
> >
> >
> > > i was wondering if anyone has taken some older
> > [IE. 80s Digitech and other
> > > misc.] digital effects and replaced the DACS with
> > similar ones but of say,
> > > lower bit rate. i know that you would probably
> > need to hack or replace
> > clock
> > > signals, and then wire everything back up to
> > compensate for the different
> > > pins. variable rate and depth would be fun.
> > >
> > > it just seems like a fun idea, and a little more
> > versitile than buying a
> > > good bit grunger/mangler/sonic distortion.
> > >
> > > - nate
> > >
> > >
> >
>