ProSoundWeb: Passive DIs provide complete signal isolation due to their transformer and can operate without a power source. Active DIs need power (generally either phantom or batteries), can supply gain to the signal, and can have an extremely high input impedance, which is a must for certain sources such as piezos.
2 comments:
This is exactly the kind of high quality, informative article that I love Pro Sound Web for. It both quickly covers the basics (I have used DI boxes occasionally and have an everyday knowledge of what they do and how they work, but my experience being mostly theatre and musicals, not bands and concerts, I probably don’t know as much as I should about them), and then goes into greater detail, not just answering questions but explaining why the answer was given. You shouldn’t use DIs to sum stereo signals not “just because” but because the inputs are wired in parallel and there’s a chance that it could cause specific negative consequences because of this. That’s the kind of information that isn’t just an answer to that specific question, but provides the knowledge to answer a while vein of similar situations or circumstances. On top of that, it’s not something that people tell you when they’re giving you a rundown of what a DI does.
Grr. Idk why that published as unknown the first time.
This is exactly the kind of high quality, informative article that I love Pro Sound Web for. It both quickly covers the basics (I have used DI boxes occasionally and have an everyday knowledge of what they do and how they work, but my experience being mostly theatre and musicals, not bands and concerts, I probably don’t know as much as I should about them), and then goes into greater detail, not just answering questions but explaining why the answer was given. You shouldn’t use DIs to sum stereo signals not “just because” but because the inputs are wired in parallel and there’s a chance that it could cause specific negative consequences because of this. That’s the kind of information that isn’t just an answer to that specific question, but provides the knowledge to answer a while vein of similar situations or circumstances. On top of that, it’s not something that people tell you when they’re giving you a rundown of what a DI does.
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