We have the Behringer x32 at the place of my work. Why not just use a
3.5mm male to RCA L+R male out and plug into the aux input on the
Behringer? That's what those inputs are for, right? That's what we do at
work and have had success with it running small conferences with little
to no audible noise.
I hope I'm not muddying the waters more here,
Brandon Hale
On 6/8/21 7:43 AM, Bill Purvis wrote:
Not strictly a Linux problem, but I hope for advice.
We're using a Behringer X32-Rack mixer for our church PA system. One
of the inputs that we need is
for people to plug in laptops - usually via the headphone socket into
a Stagg dual DI box. We seem
to get a lot of hum pickup on that, which I think is down to the
proximity to the laptops. We have
another identical DI box at the other end of the room which takes
keyboard and bass and I've had no
problems with that. Is there an alternative method we can try? We do
raise the ground lift switch on
the DI box, which reduces the hum somewhat but still get enough hum to
be noticeable when nothing
else is playing. I wondered if the matching transformers in the DI box
are acting as pickups for the
RF noise generated by the laptops. The mixer on EQ display with RTA
shows noise across the audible
spectrum, but most of the audible sound is mains hum.
Bill
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