volume stepped attenuator idea

Jamh · 18th April 2004, 04:11 PM

I wanted to share this idea about a diy volume attenuator and sollicit ideas in the construction area and the connections.

Jamh · 18th April 2004, 04:17 PM

Some of the advantages I can think of:
+ Easy soldering
+ Slim (potentially fairly flat) so it can be placed in small enclosures
+ Only a single resistor in the signal path
+ As many resistance values as you want (with the cost of bigger area, but you can put on on top or bottom, so it can be made pretty big).

It sorta reminds me of older pots/switches on 20's equipment.

Jamh · 18th April 2004, 04:25 PM

Connections from the resitors to the anchor thingy might be like this:

Peter Daniel · 18th April 2004, 04:29 PM

the switch you posted is not appropriate for volume, as it is non shorting type (make after break).
Although it looks very nice.

Jamh · 18th April 2004, 05:37 PM

The switch in the picture is just for the connection mechanism inspiration. As far as a shorting version, or a stereo version, they are still be figured out. I want to keep construction as simple as possible.

Steve Eddy · 18th April 2004, 05:58 PM

Quote:

Originally posted by Jamh
The switch in the picture is just for the connection mechanism inspiration.

By the way, who makes that switch in the photo?

se

Jamh · 19th April 2004, 03:30 PM

Sorry I don't know the manufacturer. That's a rotary switch from the 30's. They were used in one-tube radios. the problem with these was that it was easy to accidententally touch the exposed brass.

Steve Eddy · 19th April 2004, 05:27 PM

Quote:

Originally posted by Jamh
Sorry I don't know the manufacturer. That's a rotary switch from the 30's. They were used in one-tube radios. the problem with these was that it was easy to accidententally touch the exposed brass.

From the 30s? Damn! It looks absolutely pristine!

Do you have just the one? I'd like to buy one or two if you have any to sell.

se

jam · 19th April 2004, 06:13 PM

Steve,

Going to hang a transformer on it......................

Regards,
Jam

Steve Eddy · 19th April 2004, 06:19 PM

Quote:

Originally posted by jam
Going to hang a transformer on it......................

Does Sam Tellig like Musical Fidelity?

se

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18th April 2004, 04:17 PM	#2
Jamh diyAudio Member Join Date: Dec 2003 Location: sacramento	Some of the advantages I can think of: + Easy soldering + Slim (potentially fairly flat) so it can be placed in small enclosures + Only a single resistor in the signal path + As many resistance values as you want (with the cost of bigger area, but you can put on on top or bottom, so it can be made pretty big). It sorta reminds me of older pots/switches on 20's equipment.

18th April 2004, 04:29 PM	#4
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	the switch you posted is not appropriate for volume, as it is non shorting type (make after break). Although it looks very nice.

18th April 2004, 05:37 PM	#5
Jamh diyAudio Member Join Date: Dec 2003 Location: sacramento	The switch in the picture is just for the connection mechanism inspiration. As far as a shorting version, or a stereo version, they are still be figured out. I want to keep construction as simple as possible.

19th April 2004, 03:30 PM	#7
Jamh diyAudio Member Join Date: Dec 2003 Location: sacramento	Sorry I don't know the manufacturer. That's a rotary switch from the 30's. They were used in one-tube radios. the problem with these was that it was easy to accidententally touch the exposed brass.

19th April 2004, 06:13 PM	#9
jam diyAudio Member Join Date: May 2001 Location: Charlotte,NC,USA	Steve, Going to hang a transformer on it...................... Regards, Jam

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