True to the Music
4
FAQ
Why is the ProDI's output not as loud as the output from a keyboard or active preamp?
The ProDI is a passive direct box and is designed to produce a microphone level signal. This allows the ProDI to be used
alongside other microphones in a snake system and connect to the microphone input on a mixing console.
Will phantom power hurt my ProDI or devices connected to it?
No. Phantom power will simply be ignored by the ProDI as well as blocked from reaching any device connected to it.
Do I really need a DI? Can I not simply connect my instruments directly into the mixer?
Of course you can! Instruments can connect directly to a mixer using a hi-Z unbalanced “guitar” cable up to 20 feet
long. The advantage of using a high quality direct box is lower noise and proper impedance matching. This will result in
better sound, especially when connecting to professional audio equipment that accepts balanced signals and/or when the
instrument signal must travel through cables longer than 20 feet to a mixing console.
I heard active direct boxes can be better than passive. Is this true?
Both active DIs and passive DIs have their place in professional audio, just like condenser and dynamic mics do. Active DIs
can have more ‘reach’ and enhance the sound of some instruments. Passive DIs tend to handle more level than active DIs.
The real advantage of passive DIs over active ones is that they eliminate hum & buzz caused by ground loops by using a
transformer to isolate the input signal from the output.
Can I use a piezo pickup with the ProDI?
If your piezo equipped instrument has it's own pre-amp and battery (active piezo pickup) you can use the ProDI with
excellent results. If your piezo equipped instrument does not have a pre-amp (passive piezo pickup) then you really need
to have a higher input impedance to get the best signal output. The Radial JDV and PZ-Pre include a piezo feature with a
very high input impedance that is perfectly suited for passive piezo pickups.
Radial Engineering Ltd. ProDI
™
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