| So I wanted to integrate the QRS in my studio, but ... for best results,
the QRS should be fed with a stereo input signal ... and my mixing desk
doesn't have the luxury of stereo FX sends. Using the QRS straight on the
stereo mix is no good idea either: The frequency response is too bad to
run the dry signal thru the box. What's needed is a simple wet/dry potentiometer,
as you find it on every cheap Reverb today. A few opamps and good dual
potentiometer would have done the job. But as I had to build an enclosure,
front panel, power supply and all that regardless of the size of the circuit,
I found it was a good idea to include a little more in my Interface.
So I ended up with a multi function router / mixer box that is connected
to both, the stereo output of my mixing desk, and to a effect send / return
path of the desk. The obvious choice is to use the Quantec either as a
true stereo processor on the stereo mix (with the drawback of all instruments
getting the same amount of reverb), or to use it for individual
instruments, with individual reverb amount chosen by the effect send of
each channel. (Drawback here: It's mono in / stereo out, even when the
instrument is stereo and uses two channels on the mixer.) It's nice to
have both options available with the flick of a switch on a router box,
without using a patchbay. But there is a third option, combining
both methods: The main wet / dry mix can be done on the stereo output,
and starting from that point, individual mixer channels can get additional
reverb over the effect sends. With an "invert" switch on the interface
box, it's also possible to get less reverb for individual channels
- the signal that comes over the effect send is substracted from the main
reverb input signal. This will only work to some extend, as we're combining
a mono send and a stereo input signal, but in practice it's very useful. |
