Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION.
Click on a see also (sa) or tracing (xx) to view detailed entries about a related subject.
The entries are in alphabetical order by magazine name and then in chronological sequence.
To obtain a copy of any magazine article contact your local public library or the publisher.

Switched attenuators. A 23-position level control (stepped volume control) and a calibrated laboratory attenuator you can build.
AUDIO AMATEUR 2/1972 [Jan 1973] (v.3#2) pg. 14
Added Info AUDIO AMATEUR 3/1973 [Jul 1974] (v.4#3) pg. 20 (Ladder attenuator)

A variable loudness control circuit is built around the CA314OE op amp.
AUDIO AMATEUR 1/1982 [Jan 1982] (v.13#1) pg. 32

Stepped volume controls. Combine 23-position rotary switches with resistors to build stepped volume controls, a superior alternative to standard potentiometers. An available PASCAL program calculates the resistor values.
AUDIO AMATEUR 4/1988 [Oct 1988] (v.19#4) pg. 43
Added Info AUDIO AMATEUR 3/1989 [Aug 1989] (v.20#3) pg. 33

A remote control volume/balance system. Design and construction of a stepper motor-driven volume and balance control that can be attached to any amplifier and operated by infrared remote control.
AUDIO AMATEUR 2/1991 [Apr 1991] (v.22#2) pg. 24
Added Info AUDIO AMATEUR 2/1995 [Jun 1995] (v.26#2) pg. 44

Options for selecting a replacement volume control potentiometer for a Dynaco PAT-5 Bi-FET preamp (circa 1984).
AUDIO AMATEUR 2/1995 [Jun 1995] (v.26#2) pg. 44

Remote control for older audio equipment. How to add motorized potentiometers controlled by infrared remote controllers to an existing audio device.
AUDIO ELECTRONICS 6/1997 [Dec 1997] (v.28#6) pg. 28

A well-balanced, low-noise volume control. How to design a low-noise stepped attenuator, and how to achieve excellent stereo matching between channels by using 0.1% resistors.
AUDIO ELECTRONICS 3/1998 [Jun 1998] (v.29#3) pg. 8
Added Info AUDIO ELECTRONICS 4/1998 [Aug 1998] (v.29#4) pg. 43
Added Info AUDIO ELECTRONICS 6/1998 [Dec 1998] (v.29#6) pg. 43
Added Info AUDIO ELECTRONICS 1/1999 [Jan 1999] (v.30#1) pg. 46

Log volume control with precision linear potentiometer.
AUDIOXPRESS Nov 2002 (v.33#11) pg. 69

A 6-channel volume/balance control. A pure Class A analog control circuit which accepts ultra-high transparency SACD (Direct Stream Digital) or DVD-A surround formats with up to six power amp channels, while avoiding the digital processing degradation of surround-sound processors.
AUDIOXPRESS Feb 2003 (v.34#2) pg. 6

A hybrid-design stereo control unit operates in line-level or phono mode. It features separate right- and left-channel volume controls, instead of a balance control, to prevent crossover distortion. Uses cascaded FETs in the phono section and high-perveance tubes in the line amplifier section. Est. cost: $90.
AUDIOXPRESS Apr 2003 (v.34#4) pg. 22

Automatic muting. System design ideas for muting the stereo when the telephone rings.
ELECTRONIC HOUSE Sep-Oct 1995 (v.10#5) pg. 54

Programmable audio-level controller keeps a receiver's audio volume constant, regardless of incoming signal strength. Utilizes a compandor IC. Est. cost: $30.
ELECTRONICS EXPERIMENTERS HANDBOOK 1994 pg. 113

Audio level controller. Programmable (automatic) unit is independent of the host receiver's volume control. Est. cost: $25 (kit).
ELECTRONICS NOW Feb 1993 (v.64#2) pg. 41

Pushbutton-controlled potentiometer (volume control) circuit is built around the Dallas Semiconductor DS1669 or DS1802 IC.
ELECTRONICS NOW Oct 1997 (v.68#10) pg. 12

Controlling audio volume on amplifiers, radio or TV. A discussion of the various techniques used.
ELEMENTARY ELECTRONICS Mar-Apr 1966 (v.2#1) pg. 51

Adding a calibrated volume control (attenuator) to amplifiers, recorders, etc. Est. cost: $4.
ELEMENTARY ELECTRONICS Jul-Aug 1966 (v.2#3) pg. 92

Impact of stray capacitance within potentiometers on audio volume controls.
GLASS AUDIO 2/1995 (v.7#2) pg. 50
Added Info GLASS AUDIO 3/1996 (v.8#3) pg. 71

Circuit for a loudness control or bass-booster circuit.
POPULAR ELECTRONICS [1] Jun 1975 (v.7#6) pg. 84

Stereo remote control circuit allows you to control volume from a remote location.
RADIO-ELECTRONICS May 1980 (v.51#5) pg. 82

Three-position L-pad attenuator is simple and inexpensive. Suitable for a low-power device (under 30W).
SPEAKER BUILDER 1/1984 [Mar 1984] (v.5#1) pg. 34

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