From Brian Willoughby Sent Mon, Jun 18th 2018, 00:15
From Brian Willoughby Sent Mon, Jun 18th 2018, 00:15
That=E2=80=99s a good question, because it=E2=80=99s not always going to = make a difference. If you have ground hum, then converting to balanced can help. That = probably requires the conversion to be done as close to the synth as = possible to avoid a group loop between the synth and the converter. A = passive DI is totally floating, so it should always work. An active DI = will probably require a little care for grounding. If your synth cables run parallel to power cables, then converting to = balanced before the long cable run should help protect against picking = up hum from the 120 VAC fields. If your mixer line inputs are balanced, converting your synth to = balanced could get you more signal level (+6 dB) without more noise from = the mixer circuits. Ideally, the synth would have balanced outputs so that all of the above = benefits are available. The Roland Jupiter-6 has balanced outputs, and = some of the newer synths have TRS jacks with actual balanced signals = that will revert to unbalanced if you plug in a TS cable. If, on the other hand, you=E2=80=99re talking about using a passive = cable to go from unbalanced to balanced, there might not be much = benefit, if at all. It can help for some things like guitar and cheap = mics. Brian On Jun 6, 2018, at 4:42 AM, skkatter <xxxxxxxx@xxxxx.xxx> wrote: > Why do you need to convert an unbalanced signal from a synth to a > balanced one before it gets to the console? >=20 > -S >=20 > On 5 June 2018 at 15:34, Quincas Moreira <xxxxxxx@xxxxx.xxx> wrote: >> Stephen, read Laurie=E2=80=99s explanation above. You do indeed = convert unbalanced to balanced with a DI box. Don=E2=80=99t confuse a = balanced signal with a stereo one. Both use TRS (3 wires) but stereo is = two unbalanced signals sharing one ground. Balanced is a bipolar audio = signal with ground in the middle. >>=20 >> On Jun 5, 2018, at 09:21, skkatter <xxxxxxxx@xxxxx.xxx> wrote: >>> Correct me if I'm wrong, but if the audio output of your synth is >>> unbalanced then the signal will stay unbalanced despite using = balanced >>> cables. So why bother trying to change it to a balanced signal = before >>> the console? >>>=20 >>> -Stephen >>>=20 >>> On 5 June 2018 at 03:26, DJ Maytag <xxxxxxxx@xxxxxxxx.xxx> wrote: >>>> So the point of a DI box is to send the signal to the mic input of = your console and (roughly) match impedances? What if all you really want = to do is convert an unbalance synth output into a balanced one for going = into the 1/4=E2=80=9D TRS inputs of your console?