Tomo
DIY tube amps can be SHOCKING
- Joined
- Jun 22, 2001
- Posts
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Hello,
I built a 12 step attenuator. I used six 2.2K resistors and five 7.5K resistors. (per channel) I get somewhat natural (logarithmic) volume control.
The resistors are connected in series. Unfortunately, ladder attenuators require such effort and money. Besides, getting the precise values for the ladder is extremely hard.
Noice level is very low and made the overall sound more cleaner. I like it fine.
Only bad thing is that rotary switches are costly (31 USD!!). So if you can afford it, building stepped attenuators is fun and worth it.
Note this rotary switch must have "shorting" contacts.
The resistors must be high quality. I used RN55's. Riken might have too much carbony sound to it. You should choose resistors which are as transparent/tasteless as possible. I would like to use NS-2B bit could not afford them :<
Tomo
P.S. I got me some 24 step rotary switches from my hush-hush connections
I will try this out and tell ya how this one turn out.
I built a 12 step attenuator. I used six 2.2K resistors and five 7.5K resistors. (per channel) I get somewhat natural (logarithmic) volume control.
The resistors are connected in series. Unfortunately, ladder attenuators require such effort and money. Besides, getting the precise values for the ladder is extremely hard.
Noice level is very low and made the overall sound more cleaner. I like it fine.
Only bad thing is that rotary switches are costly (31 USD!!). So if you can afford it, building stepped attenuators is fun and worth it.
Note this rotary switch must have "shorting" contacts.
The resistors must be high quality. I used RN55's. Riken might have too much carbony sound to it. You should choose resistors which are as transparent/tasteless as possible. I would like to use NS-2B bit could not afford them :<
Tomo
P.S. I got me some 24 step rotary switches from my hush-hush connections