There are already digital alternatives available. You can mix 100% digitally using a DJM 750+ sending digital output to the PA system.
There are already digital alternatives available. You can mix 100% digitally using a DJM 750+ sending digital output to the PA system.
VCM100 / X1 / DJM250 / DJM900 / CDJ2000s / Maschine / Audio2+4 / 2i4 / HS8s / TSP 2.6.8
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Of course there is some equipment existing featuring digital and optical ins/outs - but it's not the majority.
The majority of DJ equipment still has no optical spdif whereas almost all consumer home audio nowadays has it.
My point here is not about that its digital, but that the optical interface will also automatically guarantee that the connection is galvanic isolated - thus 100% hum free.
Coaxial digital is also hum free, since ground noise will not be picked up by the digital receiver.
VCM100 / X1 / DJM250 / DJM900 / CDJ2000s / Maschine / Audio2+4 / 2i4 / HS8s / TSP 2.6.8
Macbook Air i7-3667U+8GB 10.9 / Win7x64 i5-3570k+24GB
I must admit - I've always avoided ground loop issues by altering my set-up. But - it seems to me there are TWO ways to resolve a GL issue:
Intervention at the POWER outlet
Intervention in the AUDIO signal chain
My question is - how do you know if you should intervene at the POWER source, or in the AUDIO SIGNAL CHAIN???
Does it matter where you intervene? Are there different types of hum/buzz?
I have tried one of the cheap car audio GL eliminators (looked exactly like the one Karlos linked to), I think it was about £4. It did absolutely nothing.
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If the device is double-insulated you can potentially intervene with a ground lift at the power source.
There is only one type of ground loop hum - 50/60Hz. The rest is just general interference.
VCM100 / X1 / DJM250 / DJM900 / CDJ2000s / Maschine / Audio2+4 / 2i4 / HS8s / TSP 2.6.8
Macbook Air i7-3667U+8GB 10.9 / Win7x64 i5-3570k+24GB
If the device is double insulated it won't have an earth, IE CDJs 2 core figure of 8 cable with a plastic earth prong on the plug simply to open the live & neutral openings on a socket. New CDJs and Pio mixers (From 800 above? not seen a 750) use a 2 core IEC lead which also has a plastic earth for the previous stated reason
Not all DJMs have a 2-pin IEC, as it depends on the electrical regulations in the country. They are all double insulated though.
VCM100 / X1 / DJM250 / DJM900 / CDJ2000s / Maschine / Audio2+4 / 2i4 / HS8s / TSP 2.6.8
Macbook Air i7-3667U+8GB 10.9 / Win7x64 i5-3570k+24GB
Yeah I just realised when re-reading it seems like I say that and have edited it
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