Difference between revisions of "Pad"
m (updated link to impad20) |
(reorganized so usage info is at the top, reference info is at the bottom) |
||
| Line 5: | Line 5: | ||
This is a device used to lower the signal level between two other devices. | This is a device used to lower the signal level between two other devices. | ||
| − | + | === Padding {{PS1}} Inputs === | |
| − | + | We use pads with our {{PS1}}s when running a pro level +4 dBu signal (e.g. output from a mixer) to the XLR inputs on Channels 1 or 2. We want to do this because the input sensitivity for these inputs is set for microphones. To get a better match for levels between the source and our inputs, we can use a pad. | |
| − | We use | ||
| − | |||
| − | |||
Pads can also help when connecting the PS1 Line Outs to ''semi-pro'' or ''consumer'' recording devices. If the PS1 Line Outs are too ''hot'' for the recorder's inputs, a pad can be used to prevent overdriving those inputs into (clipping) distortion. | Pads can also help when connecting the PS1 Line Outs to ''semi-pro'' or ''consumer'' recording devices. If the PS1 Line Outs are too ''hot'' for the recorder's inputs, a pad can be used to prevent overdriving those inputs into (clipping) distortion. | ||
| Line 15: | Line 12: | ||
A -20dB pad is also a good choice when connecting the PS1 Line Outs to a house PA, or other off-stage system. This would ensure that the house mixing console's inputs can handle the signal level without being overdriven into distortion, especially if the house console has insufficient built-in pads, or none at all. (Beware of the potential for Ground Loops here.) | A -20dB pad is also a good choice when connecting the PS1 Line Outs to a house PA, or other off-stage system. This would ensure that the house mixing console's inputs can handle the signal level without being overdriven into distortion, especially if the house console has insufficient built-in pads, or none at all. (Beware of the potential for Ground Loops here.) | ||
| − | Another application (although relatively rare) is if you want to daisy-chain the Line-Out of one PS1 Powerstand to Channel 1 or 2 of another. In that case you probably want to have a -20 dB pad inline, between the Line-Out of the first System and the Channel 1 or 2 XLR input of the second. | + | === Daisy Chaining {{PS1}}s === |
| + | Another application (although relatively rare) is if you want to daisy-chain the Line-Out of one PS1 Powerstand to Channel 1 or 2 of another. In that case you probably want to have a -20 dB pad inline, between the Line-Out of the first System and the Channel 1 or 2 XLR input of the second. See [[PS1 Powerstand/Daisy Chain]] for more information. | ||
You can find separate attenuation pads like this: | You can find separate attenuation pads like this: | ||
| Line 21: | Line 19: | ||
[[Image:Pad.jpg]] | [[Image:Pad.jpg]] | ||
| − | + | Cost: $20-30 on the web | |
| + | |||
| + | Sources: | ||
| + | * http://www.proaudiosolutions.com/product_p/impad20.htm | ||
| + | * http://www.musiciansbuy.com/WHIRLWIND_IMPAD20_IMPEDANCE_CONVERTERIMPAD20.html | ||
| + | * You might find something like this in a local music store if they have a Pro Audio department. | ||
This an example, and you will want to look into the details to determine if you need a pad, and the kinds of connections that are appropriate for your input device. | This an example, and you will want to look into the details to determine if you need a pad, and the kinds of connections that are appropriate for your input device. | ||
| + | |||
| + | == More Formal Definitions == | ||
| + | "attenuator or attenuator pad Electronics. A passive network that reduces the voltage (or power; see usage note under gain) level of a signal with negligible distortion, but with insertion loss. Often a purely resistive network, although any combination of inductors, resistors and capacitors are possible, a pad may also provide impedance matching." | ||
| + | |||
| + | |||
| + | |||
References: | References: | ||
Revision as of 05:45, 20 November 2006
Q: What is a Pad?
A "pad" is short for an "Attenuation Pad".
This is a device used to lower the signal level between two other devices.
Padding PS1 Power Stand (Classic) / Model I Inputs
We use pads with our PS1 Power Stand (Classic) / Model Is when running a pro level +4 dBu signal (e.g. output from a mixer) to the XLR inputs on Channels 1 or 2. We want to do this because the input sensitivity for these inputs is set for microphones. To get a better match for levels between the source and our inputs, we can use a pad.
Pads can also help when connecting the PS1 Line Outs to semi-pro or consumer recording devices. If the PS1 Line Outs are too hot for the recorder's inputs, a pad can be used to prevent overdriving those inputs into (clipping) distortion.
A -20dB pad is also a good choice when connecting the PS1 Line Outs to a house PA, or other off-stage system. This would ensure that the house mixing console's inputs can handle the signal level without being overdriven into distortion, especially if the house console has insufficient built-in pads, or none at all. (Beware of the potential for Ground Loops here.)
Daisy Chaining PS1 Power Stand (Classic) / Model Is
Another application (although relatively rare) is if you want to daisy-chain the Line-Out of one PS1 Powerstand to Channel 1 or 2 of another. In that case you probably want to have a -20 dB pad inline, between the Line-Out of the first System and the Channel 1 or 2 XLR input of the second. See PS1 Powerstand/Daisy Chain for more information.
You can find separate attenuation pads like this:
Cost: $20-30 on the web
Sources:
- http://www.proaudiosolutions.com/product_p/impad20.htm
- http://www.musiciansbuy.com/WHIRLWIND_IMPAD20_IMPEDANCE_CONVERTERIMPAD20.html
- You might find something like this in a local music store if they have a Pro Audio department.
This an example, and you will want to look into the details to determine if you need a pad, and the kinds of connections that are appropriate for your input device.
More Formal Definitions
"attenuator or attenuator pad Electronics. A passive network that reduces the voltage (or power; see usage note under gain) level of a signal with negligible distortion, but with insertion loss. Often a purely resistive network, although any combination of inductors, resistors and capacitors are possible, a pad may also provide impedance matching."
References: