Our videographer needs a small in-line pad for the mic on his camera. Something like the Shure piece is great, but also very large. Anyone know of anything that's considerably smaller? It needs to pass phantom power.
Small In-Line Pad
- Thread starter Adam Robinson
- Start date
RYAN LOUDMUSIC JENKINS
Sophomore
Re: Small In-Line Pad
I made some of my own. I also just talked with Mark at audiopile to try to get him to have EWI make them. Give him a call to see if he has them yet. I know he made them custom for another customer. It would be difficult to get one smaller than a typical barrel connector but that is still considerably smaller than the Shure unit. I have posted the circuit somewhere around here. It's just three resistors if I remember correctly. I'll try to find it on my computer and repost it. Feel free to send me an email and I will reply with it.
I made some of my own. I also just talked with Mark at audiopile to try to get him to have EWI make them. Give him a call to see if he has them yet. I know he made them custom for another customer. It would be difficult to get one smaller than a typical barrel connector but that is still considerably smaller than the Shure unit. I have posted the circuit somewhere around here. It's just three resistors if I remember correctly. I'll try to find it on my computer and repost it. Feel free to send me an email and I will reply with it.
Re: Small In-Line Pad
It's just 3 resistors, an "H pad". Could be built into one end of a cable if he's always using it.
It's just 3 resistors, an "H pad". Could be built into one end of a cable if he's always using it.
Robert "VOiD" Caprio
Sophomore
Re: Small In-Line Pad
Hi Adam:
You've already got the info you need on this, but here's a summary:
You need a "U Pad" made of (3) resistors soldered into the male XL connector that plugs into the camera.
Rick Chinn is my favorite on this: Uneeda Audio - Build your own attenuator pads
You need a 40dB pad. Metal film 1% 1/4 watt resistor values I'd suggest: R1/2 = 10kΩ, R2 = 200Ω.
Hi Adam:
You've already got the info you need on this, but here's a summary:
You need a "U Pad" made of (3) resistors soldered into the male XL connector that plugs into the camera.
Rick Chinn is my favorite on this: Uneeda Audio - Build your own attenuator pads
You need a 40dB pad. Metal film 1% 1/4 watt resistor values I'd suggest: R1/2 = 10kΩ, R2 = 200Ω.
RYAN LOUDMUSIC JENKINS
Sophomore
Re: Small In-Line Pad
Ryan's PAD suggestion looks like more reasonable values all around.. A 40 dB pad seems a bit much, and 20k input Z is more like a line input termination.
JR
Ryan's PAD suggestion looks like more reasonable values all around.. A 40 dB pad seems a bit much, and 20k input Z is more like a line input termination.
JR
Re: Small In-Line Pad
Whoops... Just reread the OP and sure enough he's padding a phantom powered mic. My brain latched on to the numerous situations at shows where the video guy keeps yelling at the FOH guy to reduce the line level feed to his camera. The camera guys generally think that if the console has a XL connector and his camera has a XL connector - by george that's the same thing!
Whoops... Just reread the OP and sure enough he's padding a phantom powered mic. My brain latched on to the numerous situations at shows where the video guy keeps yelling at the FOH guy to reduce the line level feed to his camera. The camera guys generally think that if the console has a XL connector and his camera has a XL connector - by george that's the same thing!
Last edited:
Re: Small In-Line Pad
Here's an example of a 40 dB pad built into the male end of a barrel adapter, but you could do the same thing if you were careful inside a regular male XLR connector. This shouldn't be used between a line output and a phantom powered mic input because there is a very real chance that you can damage the line output driver. And as JR suggested, it's rather unlikely you would need a 40 dB pad on any microphone, so use Ryan's values rather than these.
GTD
Here's an example of a 40 dB pad built into the male end of a barrel adapter, but you could do the same thing if you were careful inside a regular male XLR connector. This shouldn't be used between a line output and a phantom powered mic input because there is a very real chance that you can damage the line output driver. And as JR suggested, it's rather unlikely you would need a 40 dB pad on any microphone, so use Ryan's values rather than these.
GTD
