Bass Guitar Impedance
Why you need a direct box if you can connect a guitar or a keyboard directly into a mixer without problems? This is a great question! Is easy ignore DI, but they play a vital role in the process of recording, both in studio and, especially, the live recording. There are several different types boxes directly, but they all serve two main purposes: they act as impedance-matching device, which signals a change of line-level signals mic level and provide services to raise funds to prevent the land-nasty background noise caused by faulty wiring.
More importantly, a direct box gives a fatter sound cleaner than connecting directly to a mixing console. This is because a sign of balance can be carried over long distances without getting EMI (electro-magnet interference) and RFI (radio frequency interference). If you've never heard a radio station suddenly, leaving the speakers, then you know what I mean.
The DI will usually have an input ¼ ", a balanced XLR and ¼" through summary that can be used to route the input signal to another source of sound. This configuration allows a balanced mic signal to be sent to the mixer through XLR output and at the same time, allows you to plug your instrument into an amplifier stage through by Jack. DI's are also equipped with a ground lift switch, which will allow you to safely get off the ground without the fear of shocking. This method raises the floor the audio signal, but not the land that we do not recommend electric.
DI's come in two types - passive and active. The most obvious difference between them is, one needs energy and the other not. A passive DI is ready to use straight out of the box and does not need external power. They are very easy to install - just plug and play. However, a DI with active electronics need some kind of external power to operate the internal circuitry. They can be run from standard 48-volt power ghost directly from the mixing console, or, if the phantom power is not available, they can be operated by a 9 volt battery inside. Active DI can accept various types of input signals, which make them much more versatile than their passive counterparts, but are also more expensive.
Applications:
• Keyboard - Cases of providing direct sound as clean as possible
• Electric Guitar - Signs direct cash to be executed by an amp simulator, and a Line 6 POD for some extra processing to fatten them up
• Guitar - a direct box provides a clean environment, but sound sterile. The DI signal can be mixed with a microphone signal to add warmth / depth
• Bass Guitar - a direct box provides a cleaner sound. The DI signal is usually mixed with a microphone signal to add a beefier bottom end
I recommend:
Radial and Countryman direct boxes by its robustness and quality.
About the Author:
Quinton Jones is a Mixing/Mastering Engineer with over thirty years experience in the music industry. He is currently the Director of Operations at MusicPro Magazine. If you found this article helpful, then take a look at more articles and tutorials at:
MusicPro Magazine
Article Source: ArticlesBase.com - Active vs Passive Direct Boxes?
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