DIY stepped attenuator (how to compute resistor values?)

[jarthel]

I bought a supposedly Alps stepped attenuator in Ebay for like $6 each plus shipping.
Well I want to replace the resistors with Vishay-Dale RN55 and I'm thinking of converting it to a 50k and a 100k.

Can you help me compute for the resistor values? It has 22 steps. Maybe there's a site that would help me.

Also, this for a headphone amp.

Thanks

jayel

 

[kreliszko]

Hi jarthel,maybe you can find some useful information on the Dact site, they have some nice stepped attenuators and a program to calculate the values.
www.dact.com

 

[stigla]

A little bit down the page on this site, there's a program.

http://home-4.worldonline.nl/~t708955/triode.htm

and here's a lot of info / schematics and stuff...

http://www.goldpt.com/diy.html

 

[jarthel]

Hi jarthel,maybe you can find some useful information on the Dact site, they have some nice stepped attenuators and a program to calculate the values.
www.dact.com

Do you have the files? I downloaded it several times from 2 different computers and it seems the files on their server is corrupted.

Thanks

 

[morsel]

http://www.siteswithstyle.com/VoltSecond/12_posistion_shunt/12_Position_Pure_Shunt.html

 

[Jocko Homo]

Stupid question........why not leave it alone?

Jocko

 

[jarthel]

Stupid question........why not leave it alone?

Jocko

Cause they are probably using cheap resistors. As I mentioned the pot is supposedly an Alps.

 

[Jocko Homo]

Guess I should have been more specific.......why change from 100 K to 50 K?

Jocko

 

[jarthel]

As the other is already a 100k, I wanna to try a 50k on my DIY amp. 🙂

Jayel