A Thread Starter Audio Tx Joined Nov 9, 2011 5 Nov 9, 2011 #1 Anybody here know how to make audio pads? -20dB, -50dB etc. I need to make some with XLR cables too attenuate mic level signal. Thanks
Anybody here know how to make audio pads? -20dB, -50dB etc. I need to make some with XLR cables too attenuate mic level signal. Thanks
bertus Joined Apr 5, 2008 21,856 Nov 10, 2011 #2 Hello, You can use either PI ot T attanuators for this: http://chemandy.com/calculators/pi-attenuator-calculator.htm http://chemandy.com/calculators/t-attenuator-calculator.htm More calculators like that can be found on this page: http://chemandy.com/calculators/calculator-index.htm Bertus
Hello, You can use either PI ot T attanuators for this: http://chemandy.com/calculators/pi-attenuator-calculator.htm http://chemandy.com/calculators/t-attenuator-calculator.htm More calculators like that can be found on this page: http://chemandy.com/calculators/calculator-index.htm Bertus
A Thread Starter Audio Tx Joined Nov 9, 2011 5 Nov 10, 2011 #3 Great thanks for the websites. Do you know which pins of the XLR gets the resistors for the T pad? I assume pin1 R1 pin2 pin1 R1 pin3 ??? shunt ???
Great thanks for the websites. Do you know which pins of the XLR gets the resistors for the T pad? I assume pin1 R1 pin2 pin1 R1 pin3 ??? shunt ???
A Thread Starter Audio Tx Joined Nov 9, 2011 5 Nov 11, 2011 #5 Thanks for the link Kermit but I need to know which pins are represented on this diagram.
bertus Joined Apr 5, 2008 21,856 Nov 11, 2011 #6 Hello, If the signal is balanced you will need an H or O attenuator. Here is an example for T and H: http://www.csgnetwork.com/decibelattenuatecalc.html Bertus
Hello, If the signal is balanced you will need an H or O attenuator. Here is an example for T and H: http://www.csgnetwork.com/decibelattenuatecalc.html Bertus
A Thread Starter Audio Tx Joined Nov 9, 2011 5 Nov 11, 2011 #7 It's a balanced signal XLR to XLR Mostly to pad line level to mic level
bertus Joined Apr 5, 2008 21,856 Nov 11, 2011 #8 Hello, With the given calculator you can create the attenuation pad needed. What you need to know is the input impedance, output impedance and attenuation. For example input 600 Ω, output 10 kΩ, 20 dB will give you the following circuit: This page from the wiki shows you some theory behind the attenuation pads: http://en.wikipedia.org/wiki/Attenuator_(electronics) Bertus Attachments Attenuation_pad.png 7.9 KB Views: 35 Last edited: Nov 11, 2011
Hello, With the given calculator you can create the attenuation pad needed. What you need to know is the input impedance, output impedance and attenuation. For example input 600 Ω, output 10 kΩ, 20 dB will give you the following circuit: This page from the wiki shows you some theory behind the attenuation pads: http://en.wikipedia.org/wiki/Attenuator_(electronics) Bertus
A Thread Starter Audio Tx Joined Nov 9, 2011 5 Nov 11, 2011 #9 I finally found the pinout http://www.uneeda-audio.com/pads/ At the bottom of the page Thanks guys for the replies!!!
I finally found the pinout http://www.uneeda-audio.com/pads/ At the bottom of the page Thanks guys for the replies!!!