Pad: Difference between revisions - Bose Portable PA Knowledge

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== Do It Yourself ==

~~<blockquote>A quality~~ inline pad can be easily soldered ~~[makes no sense~~ to ~~spend extra money here]: Insert~~ 3 resistors into your mic cable:

An inline pad can be easily soldered, you'll need to insert 3 resistors into your mic cable. The values of these three resistors are determined by the amount of attenuation you wish to achieve. Bose recommends -20dB of attenuation to bring a hot +4dBu balanced line level signal down to a voltage that the Bose PS1 (Classic) Mic inputs can handle.

*~~2x 470 ohms,~~ inserted into ~~line~~ 2+3 ~~[absolute value +/- 10%, but matched to less than 1% tolerance]''(= console side, for usage between console and L1/PS1)''~~

*~~1x 470 ohms,~~ inserted ~~between pin~~ 2+3 on ~~the console side (orig~~.~~).''(= PS1 side~~, ~~for usage between console and L1~~/~~PS1)''~~

To build a -20dB attenuation pad insert the following three resistors into your XLR cable path.

</blockquote>

Source: [http://www.~~neumann~~.com/~~forums~~/~~view.php?bn=neumann_micrec&key=1122644079&v=f Martin Schneider~~ / ~~neumann Mic. Development~~]

*Two 680 ohm resistors inserted into lines (pins) 2 and 3

*One 150 ohm resistor inserted across pins 2 and 3

To minimize the effect on common mode rejection, you should use 1% resistors, but common-ordinary 5% carbon film resistors will work. For microphone pad applications, 1/4 watt or less is fine.

</blockquote>

Source: [http://www.uneeda-audio.com/pads/ Rick Chinn / Uneeda Audio]

<br> References:

@@ Line 40: / Line 40: @@
 == Do It Yourself  ==
-<blockquote>A quality inline pad can be easily soldered [makes no sense to spend extra money here]: Insert 3 resistors into your mic cable:
+An inline pad can be easily soldered, you'll need to insert 3 resistors into your mic cable. The values of these three resistors are determined by the amount of attenuation you wish to achieve. Bose recommends -20dB of attenuation to bring a hot +4dBu balanced line level signal down to a voltage that the Bose PS1 (Classic) Mic inputs can handle.
-*2x 470 ohms, inserted into line 2+3 [absolute value +/- 10%, but matched to less than 1% tolerance]''(= console side, for usage between console and L1/PS1)''
+<blockquote>
-*1x 470 ohms, inserted between pin 2+3 on the console side (orig.).''(= PS1 side, for usage between console and L1/PS1)''
+To build a -20dB attenuation pad insert the following three resistors into your XLR cable path.
-</blockquote>
-Source: [http://www.neumann.com/forums/view.php?bn=neumann_micrec&key=1122644079&v=f Martin Schneider / neumann Mic. Development]
+*Two 680 ohm resistors inserted into lines (pins) 2 and 3
+*One 150 ohm resistor inserted across pins 2 and 3
+To minimize the effect on common mode rejection, you should use 1% resistors, but common-ordinary 5% carbon film resistors will work. For microphone pad applications, 1/4 watt or less is fine.
+</blockquote>
+Source: [http://www.uneeda-audio.com/pads/ Rick Chinn / Uneeda Audio]
 <br> References: