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What is a pad? Is it the same as an attenuator?

A post by David Mellor
Sunday June 01, 2003
A description of the technology and function of the pad (attenuator) as found in mixing consoles.
What is a pad? Is it the same as an attenuator?

The mic preamp (preamplifer) is where the input signal is conditioned so that it is suitable for further processing in the console.

In some mixing consoles and mic preamps, the lowest gain setting is insufficiently low to cope with very high output levels from the microphone.

In this case there will probably be a 'pad' switch. A pad is an attenuator - it makes the signal smaller.

Usually, a mixing console pad reduces the signal level by 20 dB. An external pad will mostly likely be 10 dB or 20 dB.

In a well-designed console, the pad should be positioned before the active circuit components. This means that, when active, the pad cuts down the signal level before it has the chance to cause any distortion.

Another reason to use the pad is if it is found that the fader on that channel is inconveniently low. When the fader is low down, it is difficult to adjust accurately.

So if you need to have precise control over a signal that is only required at a low level in the mix, it is handy to use the pad to allow the fader to be placed higher up in its range.

A post by David Mellor
Sunday June 01, 2003 ARCHIVE
David Mellor has been creating music and recording in professional and home studios for more than 30 years. This website is all about learning how to improve and have more fun with music and recording. If you enjoy creating music and recording it, then you're definitely in the right place :-)
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