Norman Lathrop Enterprises | Norman Lathrop Enterprises
Index To How To Do It Information
Lathrop Report On Newspaper Indexes
A profile of Norman Lathrop Enterprises
Last Updated
  Index Home  |   A-Z Subject Heading Guide    |   Keyword Search  |   Union List 

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.


Speaker-cable impedance concerns. A look at the effect of speaker cable on the system.
AUDIOXPRESS Mar 2001 (v.32#3) pg. 62

Digital impedance measurement. How to determine the all-important impedance measurement to design a loudspeaker system using a PC and the right software.
AUDIOXPRESS Jul 2001 (v.32#7) pg. 42
Correction AUDIOXPRESS Oct 2001 (v.32#10) pg. 86

Measuring passive radiators. Using impedance curves to calculate the parameters of a passive radiator (a suspended, movable diaphragm in the wall of a speaker).
AUDIOXPRESS Jun 2002 (v.33#6) pg. 50

Calculating the value of a padding resistor when equalizing driver unit outputs.
AUDIOXPRESS Jul 2002 (v.33#7) pg. 69

The ZERO autoformer. Discover the advantages of high impedance speakers with this auto-transformer (a speaker impedance multiplying autoformer) to improve your system's sound.
AUDIOXPRESS Jan 2003 (v.34#1) pg. 38
Correction AUDIOXPRESS Mar 2003 (v.34#3) pg. 66
Added Info AUDIOXPRESS Jun 2003 (v.34#6) pg. 66

How to measure the impedance of a loudspeaker.
ELECTRONICS NOW Sep 1994 (v.65#9) pg. 8

Build a "widget box" to measure loudspeaker parameters. Allows you to measure impedance of loudspeaker drivers using either constant voltage or constant current at the flip of a switch. Has a built-in calibration for high accuracy.
SPEAKER BUILDER 1/1981 [Mar 1981] (v.2#1) pg. 7
Added Info SPEAKER BUILDER 4/1982 [Feb 1983] (v.3#4) pg. 40

Modifying a Heath IB-5281 RCL bridge to measure loudspeaker impedance.
SPEAKER BUILDER 1/1982 [Feb 1982] (v.3#1) pg. 31

Modular test instruments. Part 4-A. Build your own Z meter (speaker impedance meter).
SPEAKER BUILDER 3/1984 [Aug 1984] (v.5#3) pg. 16

Improved impedance measurement method.
SPEAKER BUILDER 3/1984 [Aug 1984] (v.5#3) pg. 32

Modular test instruments. Part 4-B. Build your own Z meter (continued).
SPEAKER BUILDER 4/1984 [Dec 1984] (v.5#4) pg. 21

Is driver impedance compensation worthwhile? How to test your loudspeakers and crossover to determine the effect of impedance compensation.
SPEAKER BUILDER 3/1987 [Aug 1987] (v.8#3) pg. 31
Correction SPEAKER BUILDER 4/1987 [Dec 1987] (v.8#4) pg. 50

How to plot and understand complex impedance (the resistive load a loudspeaker presents to the terminals of an amplifier).
SPEAKER BUILDER 2/1988 [Apr 1988] (v.9#2) pg. 15

Using impedance measurement as a tool when trying to eliminate loudspeaker enclosure resonances.
SPEAKER BUILDER 4/1989 [Jul 1989] (v.10#4) pg. 37

Measuring resistance and inductance of voice coils. Designing and using Zobel networks to make the impedance of a woofer look like a resistor.
SPEAKER BUILDER 2/1990 [Apr 1990] (v.11#2) pg. 50
Added Info SPEAKER BUILDER 1/1992 [Jan 1992] (v.13#1) pg. 73

Formulas to determine values for impedance equalization and values for series notch filters when two identical drivers are used together.
SPEAKER BUILDER 3/1990 [Jun 1990] (v.11#3) pg. 3
Added Info SPEAKER BUILDER 3/1992 [May 1992] (v.13#3) pg. 75

Procedure for measuring the impedance of a loudspeaker or driver using a sinewave generator, AC voltmeter, and power amplifier.
SPEAKER BUILDER 1/1992 [Jan 1992] (v.13#1) pg. 60

Measuring loudspeaker impedance without using a bridge. Requires using a power resistor, an AC digital voltmeter, trigonometric calculator, power amplifier, and an audio oscillator.
SPEAKER BUILDER 2/1994 [Mar 1994] (v.15#2) pg. 18
Added Info SPEAKER BUILDER 6/1994 [Aug 1994] (v.15#6) pg. 56

Exploring loudspeaker impedance. An explanation of loudspeaker impedance curve theory. How to make successful dividing network designs using either optimization computer software or a programmable calculator.
SPEAKER BUILDER 5/1994 [Jul 1994] (v.15#5) pg. 28
Added Info SPEAKER BUILDER 8/1994 [Dec 1994] (v.15#8) pg. 61

Dynamic characteristics of driver impedance. How to determine a meaningful impedance value when making loudspeaker driver-performance tests.
SPEAKER BUILDER 1/1997 [Feb 1997] (v.18#1) pg. 10
Added Info SPEAKER BUILDER 4/1997 [Jun 1997] (v.18#4) pg. 52
Added Info SPEAKER BUILDER 5/1997 [Aug 1997] (v.18#5) pg. 55

Mining the complex impedance. How to extract additional information about a speaker system whose complex impedance is known.
SPEAKER BUILDER 7/1998 [Nov 1998] (v.19#7) pg. 44

The impedance interface. Build this handy accessory to measure loudspeaker impedance using a digital volt-ohmmeter (VOM). Est. cost: $10.
SPEAKER BUILDER 1/1999 [Feb 1999] (v.20#1) pg. 38
Added Info SPEAKER BUILDER 5/1999 [Aug 1999] (v.20#5) pg. 47

A handy-dandy loudspeaker impedance measurement device which does not require a constant output voltage from the signal generator. Est. cost: $20.
SPEAKER BUILDER 2/1999 [Apr 1999] (v.20#2) pg. 22
Added Info SPEAKER BUILDER 4/1999 [Jul 1999] (v.20#4) pg. 50

The Impedometer. Low-cost method for accurately measuring loudspeaker impedance.
SPEAKER BUILDER 8/1999 [Dec 1999] (v.20#8) pg. 28