[sdiy] OT: Audio line levels

[Peter Blackett]

Hi,
I think that some active Di boxes don't provide electrical isolation 
between the input and output (the feed to the desk). this can be a 
problem if you are trying to get rid of earth loops.
are the gains on the input channels on the  new mixer adjustable ? as it 
might be able to cope with the - 10 signal levels without being too 
noisy. Otherwise I think it would be possible to make up an amplifier to 
increase the signal level.
I think there may be a kit avaiable to do this, but I can't remember 
where I saw the details.....
Happy Holidays
regards Peter


Michael Ruberto wrote:

> Soon I will be picking up my new mixer. Problem here is that I just 
> found out all of it's inputs are unbalanced +4 level. So I have to 
> find or preferably build a level shifter that can accomodate the 20+ 
> outputs of all my -10 output synths and sampler. I imagine buying 
> something to do this will cost a hefty sum for this

> Also I am curious about Active Direct Inject boxes. Anybody use them? 
> Are they better/worse than passive?
>
> M. A. Ruberto