Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: 12AX7 on February 19, 2012, 03:25:07 pm

Title: Attenuator schematic?
Post by: 12AX7 on February 19, 2012, 03:25:07 pm

I'm looking for a fairly transparent attenuator to build. Something that doesn't color the tone much if at all for light reduction, maybe 4-6 DB. Anyone know of a schematic for something like that which can be built with easily sourced parts cheaply? If not, do you know of a good commercially available unit thats not too expensive?

Title: Re: Attenuator schematic?
Post by: kagliostro on February 19, 2012, 03:55:23 pm

Here a couple of detailed projects

http://www.tube-town.net/diy/tt-pos/tt-posx-en.html (http://www.tube-town.net/diy/tt-pos/tt-posx-en.html)

http://music-electronics-forum.com/attachments/7028d1258673027-attenuator-layout-final-c.pdf (http://music-electronics-forum.com/attachments/7028d1258673027-attenuator-layout-final-c.pdf)

a two attenuation level version

http://www.guitarplayer.com/article/power-attenuator-project/930 (http://www.guitarplayer.com/article/power-attenuator-project/930)

here a different approach (with speaker motor)

http://www.tedweber.com/atten.htm (http://www.tedweber.com/atten.htm)

http://www.diystompboxes.com/smfforum/index.php?topic=16235.0 (http://www.diystompboxes.com/smfforum/index.php?topic=16235.0)

but, sorry, I didn't build so I have no further info for you about response

Kagliostro