|
Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
|
|
|
Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
|
In Reply to: Re: Help with Shallco Ladder Attenuators posted by LouD'A on March 22, 2007 at 05:57:27:
Lou,I am not sure but it sounds like you have a "fixed series - stepped shunt" attenuator. If so, you will need an additional resistor for the fixed series element to form a resistor divider. The value of the series resistor depends on the existing resistors in your attenuator. I would start with 1K but anything from 1K -10K should work for now. Let's call your Posts A and B.
1. Connect RCA input to one side of of the new series resistor.
2. Connect the other side of series resistor to POST A AND RCA output.
3. Connect BOTH RCA commons(gnd) to POST B.As you rotate and switch in smaller resistors the signal will be attenuated more. The fully counter clockwise end should be 0 ohms (short) and fully clockwise end open (no shunt resistor).
If you measure all the resistors in your unit and know how many dB per step it is supposed to be, we could calculate the correct series resistor value.
Best Regards,
cm7
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- Re: Help with Shallco Ladder Attenuators - CM7 09:19:56 03/22/07 (1)
- Re: Help with Shallco Ladder Attenuators - LouD'A 09:47:01 03/22/07 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2024, Audio Asylum, all rights reserved ]
