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PHONOGRAPH PREAMPLIFIER entries in Index to How To Do It Information
Norman Lathrop Enterprises  
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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.

PHONOGRAPH PREAMPLIFIER
xx   AUDIO PREAMPLIFIER
xx   PHONOGRAPH

Improve your Dynaco PAT-4 stereo preamplifier. (1) Replace the tone controls (2) Increase the bass response in the phono equalization. (3) Change resistors. (4) Shield the power switch pilot light. (Other ideas provided by some of the following ADDED INFO references).
AUDIO AMATEUR 1/1970 [Winter 1970] (v.1#1) pg. 14
Added Info AUDIO AMATEUR 2/1970 [Spring 1970] (v.1#2) pg. 22
Added Info AUDIO AMATEUR 3/1970 [Summer 1970] (v.1#3) pg. 20
Added Info AUDIO AMATEUR 2/1971 [Nov 1971] (v.2#2) pg. 18
Added Info AUDIO AMATEUR 3/1971 [Apr 1972] (v.2#3) pg. 18
Added Info AUDIO AMATEUR 2/1972 [Jan 1973] (v.3#2) pg. 20, 30
Correction AUDIO AMATEUR 3/1972 [Mar 1973] (v.3#3) pg. 32
Added Info AUDIO AMATEUR 1/1973 [Dec 1973] (v.4#1) pg. 16
Correction AUDIO AMATEUR 1/1973 [Dec 1973] (v.4#1) pg. 28
Added Info AUDIO AMATEUR 4/1973 [Aug 1974] (v.4#4) pg. 18
Added Info AUDIO AMATEUR 3/1974 [Feb 1975] (v.5#3) pg. 18, 36
Added Info AUDIO AMATEUR 4/1974 [Apr 1975] (v.5#4) pg. 43
Added Info AUDIO AMATEUR 2/1975 [Nov 1975] (v.6#2) pg. 38, 40
Added Info AUDIO AMATEUR 4/1976 [Dec 1976] (v.7#4) pg. 52
Added Info AUDIO AMATEUR 1/1977 [Feb 1977] (v.8#1) pg. 39
Added Info AUDIO AMATEUR 2/1977 [May 1977] (v.8#2) pg. 69

Tip on using a combination of preamps (Dynaco PAS-3 and Dynaco PAT-4) to achieve improved sound from phonograph recordings.
AUDIO AMATEUR 1/1971 (v.2#1) pg. 18
Added Info AUDIO AMATEUR 3/1971 [Apr 1972] (v.2#3) pg. 21
Added Info AUDIO AMATEUR 4/1971 [Jul 1972] (v.2#4) pg. 18

Improve your Heath AR-15 or AR-1500 FM receiver and phono preamplifier.
AUDIO AMATEUR 3/1972 [Mar 1973] (v.3#3) pg. 9
Added Info AUDIO AMATEUR 2/1973 [Apr 1974] (v.4#2) pg. 22
Added Info AUDIO AMATEUR 4/1976 [Dec 1976] (v.7#4) pg. 54

A simple, response curve adjustable building block circuit for a low level phonograph or magnetic tape preamplifier.
AUDIO AMATEUR 4/1974 [Apr 1975] (v.5#4) pg. 4
Added Info AUDIO AMATEUR 4/1975 [Mar 1976] (v.6#4) pg. 40
Added Info AUDIO AMATEUR 1/1976 [May 1976] (v.7#1) pg. 40, 41, 42

Remodify the Dynaco PAS preamplifier. Improvements to the phono stage, high-level stage, power supply, etc.
AUDIO AMATEUR 2/1976 [Jul 1976] (v.7#2) pg. 21
Correction AUDIO AMATEUR 4/1976 [Dec 1976] (v.7#4) pg. 50
Added Info AUDIO AMATEUR 1/1977 [Feb 1977] (v.8#1) pg. 49, 50
Added Info AUDIO AMATEUR 3/1977 [Aug 1977] (v.8#3) pg. 40, 54
Added Info AUDIO AMATEUR 1/1978 [Mar 1978] (v.9#1) pg. 69, 70
Added Info AUDIO AMATEUR 1/1979 [Feb 1979] (v.10#1) pg. 36
Added Info AUDIO AMATEUR 1/1980 [Jan 1980] (v.11#1) pg. 58

State-of-the-art phono preamp is built around a Dynaco printed circuit board. Designed to complement a "Soundcraftsman" equalizer.
AUDIO AMATEUR 2/1976 [Jul 1976] (v.7#2) pg. 28

Transient response (a do-it-yourself clinic). Practical solutions for your system to make recorded music sound more like live music. Looks at cartridge, preamp, amplifier, speakers, etc.
AUDIO AMATEUR 2/1977 [May 1977] (v.8#2) pg. 12

Component interfaces. Part 1. Phono cartridge interface with the preamp.
AUDIO AMATEUR 1/1978 [Mar 1978] (v.9#1) pg. 40

LZ-1. A low distortion IC preamplifier/control unit. Two circuit boards (phono preamp and high-level buffer/tone control) provide volume, bass, treble and balance control.
AUDIO AMATEUR 1/1979 [Feb 1979] (v.10#1) pg. 5
Added Info AUDIO AMATEUR 3/1979 [Jul 1979] (v.10#3) pg. 57, 62
Added Info AUDIO AMATEUR 4/1979 [Oct 1979] (v.10#4) pg. 61
Added Info AUDIO AMATEUR 3/1982 [Aug 1982] (v.13#3) pg. 52
Added Info AUDIO AMATEUR 2/1984 [May 1984] (v.15#2) pg. 56

A comparison of preamplifier construction projects. (1) Williamson 20/20 preamp semi-kit. (2) Southwest Technical Products' (Meyer) Super Op Amp. (3) Compact phono preamp based on the National Semiconductor LM381A IC. (4) Leach preamp featured in Audio magazine.
AUDIO AMATEUR 2/1979 [Apr 1979] (v.10#2) pg. 11

The PAT-5/WJ-1A (a PAT-5/WJ-1 update). A look at specific areas which could yield audible improvements within the general PAT-5 chassis framework. Includes detailed modifications for the power supply, interconnecting wiring and high level card, and the phono circuit. [NOTE: related article in issue 1/1978 p7].
AUDIO AMATEUR 3/1979 [Jul 1979] (v.10#3) pg. 24
Added Info AUDIO AMATEUR 4/1979 [Oct 1979] (v.10#4) pg. 48, 57, 58, 60
Added Info AUDIO AMATEUR 1/1980 [Jan 1980] (v.11#1) pg. 42, 56
Added Info AUDIO AMATEUR 2/1980 [Mar 1980] (v.11#2) pg. 50, 51, 53, 54
Correction AUDIO AMATEUR 3/1980 [Jun 1980] (v.11#3) pg. 50
Added Info AUDIO AMATEUR 3/1980 [Jun 1980] (v.11#3) pg. 55, 56, 57
Added Info AUDIO AMATEUR 4/1980 [Nov 1980] (v.11#4) pg. 61, 63
Added Info AUDIO AMATEUR 2/1981 [Apr 1981] (v.12#2) pg. 58, 59
Added Info AUDIO AMATEUR 3/1981 [Jun 1981] (v.12#3) pg. 54
Added Info AUDIO AMATEUR 2/1988 [May 1988] (v.19#2) pg. 44

Painless preamp is created by taking a PS II phono stage amplifier and running it through attenuators directly into the power amp.
AUDIO AMATEUR 3/1979 [Jul 1979] (v.10#3) pg. 40
Correction AUDIO AMATEUR 4/1979 [Oct 1979] (v.10#4) pg. 55

A high accuracy inverse RIAA network. It is used along with an oscillator to test how well your phonograph preamp restores the recorded signal.
AUDIO AMATEUR 1/1980 [Jan 1980] (v.11#1) pg. 22
Added Info AUDIO AMATEUR 3/1980 [Jun 1980] (v.11#3) pg. 53
Added Info AUDIO AMATEUR 2/1981 [Apr 1981] (v.12#2) pg. 50
Added Info AUDIO AMATEUR 3/1981 [Jun 1981] (v.12#3) pg. 49

A passively equalized RIAA phono preamp. Part 1
AUDIO AMATEUR 3/1980 [Jun 1980] (v.11#3) pg. 18
Added Info AUDIO AMATEUR 4/1980 [Nov 1980] (v.11#4) pg. 61, 65
Added Info AUDIO AMATEUR 1/1981 [Feb 1981] (v.12#1) pg. 45, 47
Correction AUDIO AMATEUR 2/1981 [Apr 1981] (v.12#2) pg. 57
Added Info AUDIO AMATEUR 3/1981 [Jun 1981] (v.12#3) pg. 53
Added Info AUDIO AMATEUR 4/1981 [Sep 1981] (v.12#4) pg. 59
Added Info AUDIO AMATEUR 4/1986 [Oct 1986] (v.17#4) pg. 48
Added Info AUDIO AMATEUR 4/1987 [Nov 1987] (v.18#4) pg. 50
Added Info AUDIO AMATEUR 1/1989 [Feb 1989] (v.20#1) pg. 29 (New version)

Test reports on the Heath AP-1615 preamp. Includes a modification for the phono preamp circuit.
AUDIO AMATEUR 3/1980 [Jun 1980] (v.11#3) pg. 42, 44
Added Info AUDIO AMATEUR 2/1981 [Apr 1981] (v.12#2) pg. 64
Added Info AUDIO AMATEUR 3/1981 [Jun 1981] (v.12#3) pg. 48

A passively equalized RIAA phono preamp. Part 2. Circuit card layouts.
AUDIO AMATEUR 4/1980 [Nov 1980] (v.11#4) pg. 25

Equipment review of the Phoenix Systems P-10 phono preamp kit.
AUDIO AMATEUR 1/1983 [Apr 1983] (v.14#1) pg. 50
Added Info AUDIO AMATEUR 3/1983 [Sep 1983] (v.14#3) pg. 48

New devices for audio from National Semiconductor. Circuits included for a differential amplifier, operational amplifier, phono preamp, line level amp, etc.
AUDIO AMATEUR 5/1983 [Jan 1984] (v.14#5) pg. 7
Added Info AUDIO AMATEUR 1/1985 [Jan 1985] (v.16#1) pg. 55

A vacuum tube pre-preamp with active voltage regulation. A moving-coil cartridge preamplification device with a regulated power supply.
AUDIO AMATEUR 5/1984 [Oct 1984] (v.15#5) pg. 7
Correction AUDIO AMATEUR 2/1985 [Mar 1985] (v.16#2) pg. 50, 51

A phono preamp/crossover combined in one unit.
AUDIO AMATEUR 5/1984 [Oct 1984] (v.15#5) pg. 25

A preamp for vintage 78s. How to modify a McIntosh C-8 preamplifier for reproduction of 78 rpm recordings.
AUDIO AMATEUR 1/1985 [Jan 1985] (v.16#1) pg. 25
Added Info AUDIO AMATEUR 2/1988 [May 1988] (v.19#2) pg. 48, 56
Added Info AUDIO AMATEUR 3/1989 [Aug 1989] (v.20#3) pg. 63

Preeminent preamp. Build the P-100-mm, the "ultimate" moving-magnet phono preamp.
AUDIO AMATEUR 3/1985 [Jul 1985] (v.16#3) pg. 16
Added Info AUDIO AMATEUR 4/1986 [Oct 1986] (v.17#4) pg. 53

A moving coil preamp. Provides a 3 to 40dB gain in front of the normal RIAA amplifier. Part 1.
AUDIO AMATEUR 4/1986 [Oct 1986] (v.17#4) pg. 7
Correction AUDIO AMATEUR 2/1987 [Mar 1987] (v.18#2) pg. 50

A moving coil preamp. Part 2.
AUDIO AMATEUR 1/1987 [Jan 1987] (v.18#1) pg. 30
Correction AUDIO AMATEUR 3/1990 [Aug 1990] (v.21#3) pg. 47

Circuit for another RIAA phono preamplifier which is a variation of the Jung/Wurcer RIAA phono preamp.
AUDIO AMATEUR 2/1987 [Mar 1987] (v.18#2) pg. 56

An active inverse RIAA circuit is used to test a phono preamp for accurate RIAA frequency response, low distortion, and low noise.
AUDIO AMATEUR 1/1991 [Feb 1991] (v.22#1) pg. 22

Op amps applied. Constructing a phono preamp around the TIL070 op amp.
AUDIO AMATEUR 4/1991 [Oct 1991] (v.22#4) pg. 44
Correction AUDIO AMATEUR 1/1992 [Mar 1992] (v.23#1) pg. 58

A phono preamplifier. Circuit layout, power supply design and assembly of an alternative design to the standard RIAA phonograph recording and reproduction procedure. Looks at both the cartridge and preamp.
AUDIO AMATEUR 3/1996 [Sep 1996] (v.27#3) pg. 8
Added Info AUDIO ELECTRONICS 2/1997 [Apr 1997] (v.28#2) pg. 35
Added Info AUDIO ELECTRONICS 3/1997 [Jun 1997] (v.28#3) pg. 36
Added Info AUDIOXPRESS Feb 2003 (v.34#2) pg. 40 (Changed components for sonic improvement)

Passive preamp project. Features include six inputs (including phono and video sound pass-through), a buffered source selector for tape or a second room, 24-position 50k ladder attenuators, separate power supply, etc.
AUDIO ELECTRONICS 4/1998 [Aug 1998] (v.29#4) pg. 26

A low-noise pre-preamp. Build a preamp for low-output moving-coil cartridges.
AUDIO ELECTRONICS 5/1999 [Sep 1999] (v.30#5) pg. 20
Added Info AUDIO ELECTRONICS 1/2000 [Jan 2000] (v.31#1) pg. 50

A simple PP-1 mod. Power supply modification for the NAD PP-1 phono preamplifier manufactured by NAD Electronics International. [See PP-1 review in 3/2000 issue.]
AUDIO ELECTRONICS 6/2000 [Nov 2000] (v.31#6) pg. 14
Added Info AUDIOXPRESS May 2001 (v.32#5) pg. 77

A phono pre-preamplifier for the CD era. This small unit allows a phonograph to be attached to any of the standard, flat-response, high-level inputs found on a modern audio or audio/video preamp or receiver. Part 1.
AUDIOXPRESS Jan 2001 (v.32#1) pg. 24
Correction AUDIOXPRESS Apr 2001 (v.32#4) pg. 84
Added Info AUDIOXPRESS Sep 2001 (v.32#9) pg. 74, 78

A phono pre-amplifier for the CD era. Part 2. Power supply design and construction.
AUDIOXPRESS Feb 2001 (v.32#2) pg. 34
Added Info AUDIOXPRESS Jun 2001 (v.32#6) pg. 77
Correction AUDIOXPRESS Jul 2001 (v.32#7) pg. 82
Added Info AUDIOXPRESS Aug 2001 (v.32#8) pg. 75 (Power-supply design)
Added Info AUDIOXPRESS Dec 2002 (v.33#12) pg. 46

Phono preamp circuit is adapted from a textbook two-stage, passive-equalization circuit that uses no electrolytics.
AUDIOXPRESS Feb 2001 (v.32#2) pg. 74

High-quality control unit will improve the performance of a modified solid-state Integrated Power Amplifier or a passive control unit. Est. cost: $180.
AUDIOXPRESS Mar 2001 (v.32#3) pg. 36

Lafayette preamp. Phono stage design taken from the Lafayette KT-250/LA-250 amp is easy to build.
AUDIOXPRESS Jul 2001 (v.32#7) pg. 72

A planar-triode phono preamp. Using the odd-shaped Russian 6S17K-V (6C17bB) planar triode in a circuit which rivals commercial preamps at much less lost.
AUDIOXPRESS Nov 2001 (v.32#11) pg. 18
Added Info AUDIOXPRESS Apr 2002 (v.33#4) pg. 64, 69

Passive phono preamps -- a universal network. Information you need to design phono preamp equalization to enjoy listening to your 78s and old LPs, RIAA and otherwise.
AUDIOXPRESS Dec 2001 (v.32#12) pg. 8
Added Info AUDIOXPRESS Nov 2002 (v.33#11) pg. 60

The Pearl phono stage. A Zen phono stage preamp design.
AUDIOXPRESS Jun 2002 (v.33#6) pg. 32

Phono preamp circuit that uses no exotic components and can be constructed with off-the-shelf parts.
AUDIOXPRESS Jun 2002 (v.33#6) pg. 68

Passive phono preamps. How noise, signal level, and input overload concerns impact the design of a passive phono preamp.
AUDIOXPRESS Mar 2003 (v.34#3) pg. 38

Seven budget-priced phono preamps and kits are reviewed.
AUDIOXPRESS Apr 2003 (v.34#4) pg. 40
Added Info AUDIOXPRESS Oct 2003 (v.34#10) pg. 64

Borbely's RIAA high-quality phono preamp featuring high-transconductance 5842 tubes.
AUDIOXPRESS Oct 2003 (v.34#10) pg. 36

Combination phonograph and tape deck preamp will produce about 40 dB of gain. Est. cost: $7.
ELECTRONICS ILLUSTRATED Jul 1968 (v.11#4) pg. 38

Theory, design, and testing of preamp for magnetic-type phonograph cartridges which use RIAA equalization.
ELECTRONICS WORLD May 1968 (v.79#5) pg. 44

Audio preamplifier is a high-gain, low-output impedance circuit that is equalized for general-purpose mike, magnetic phono, or tape head use. Uses an integrated circuit.
ELECTRONICS WORLD Jul 1968 (v.80#1) pg. 26

A nuvistor preamp. Schematic and parts list for building a phono preamp using the nuvistor VHF/UHF amplifying tube.
GLASS AUDIO 4/1993 (v.5#4) pg. 1

A balanced input phono preamp for lower noise pickup.
GLASS AUDIO 4/1995 (v.7#4) pg. 24

SPICE and the art of preamp design. Part 1. Using an evaluation version of MicroSim PSpice software to design a vacuum-tube preamp with low distortion, enormous headroom, and exceptional specs. Includes a detailed and thorough explanation of the design process. Applying the results to a Dynaco PAS phono preamp.
GLASS AUDIO 2/1997 (v.9#2) pg. 1
Added Info GLASS AUDIO 4/1998 (v.10#4) pg. 60

An MC/MM (moving-coil/moving-magnet) phono preamplifier uses low-noise JFETs to manage the input-noise problem and vacuum tubes to handle the large signals.
GLASS AUDIO 2/1997 (v.9#2) pg. 32
Added Info GLASS AUDIO 5/1997 (v.9#5) pg. 56

SPICE and the art of preamp design. Part 2. Design of line amplifiers, both with and without tone controls. Applying the results to a Dynaco PAS phono preamp.
GLASS AUDIO 4/1997 (v.9#4) pg. 38
Added Info GLASS AUDIO 1/1998 (v.10#1) pg. 56

A PSpiced preamp with THD cancellation. Build a moving-magnet phono stage (preamplifier) having remarkable sonic characteristics with the voltages produced by two 12-volt batteries, a handful of components, and four E188CC-SQ vacuum tubes.
GLASS AUDIO 2/1998 (v.10#2) pg. 22
Correction GLASS AUDIO 4/1998 (v.10#4) pg. 57

The beta-follower amplifier. How to transform a transistorized Marantz model 3300 preamplifier into a vacuum tube unit that incorporates a phono amplifier, a passive RIAA correction, a linear amplifier with a low-pass filter, and a third amplifier with switching capability for tone control.
GLASS AUDIO 4/1998 (v.10#4) pg. 1
Correction GLASS AUDIO 6/1998 (v.10#6) pg. 70
Added Info GLASS AUDIO 2/1999 (v.11#2) pg. 58

Review of the phono preamplifier kit from Wolze Hardware Company.
GLASS AUDIO 3/2000 (v.12#3) pg. 52

The true realism phono preamplifier offers valuable design tips to capture the concert-hall sound in your listening room.
GLASS AUDIO 4/2000 (v.12#4) pg. 18
Added Info AUDIOXPRESS Feb 2001 (v.32#2) pg. 74

An integrated circuit amplifier powered by four 1.5-volt penlight cells. Suitable as a phonograph or microphone preamplifier, or a boost amplifier in a receiver IF or RF stage, etc. Est. cost: $6.
POPULAR ELECTRONICS [1] Oct 1966 (v.25#4) pg. 57

Integrated circuit stereo preamp has provisions for NAB tape-head equalization and RIAA magnetic phono inputs. Can also be used as a general purpose broadband preamplifier.
POPULAR ELECTRONICS [1] Mar 1969 (v.30#3) pg. 52

Hi-fi stereo audio preamplifier uses field effect transistors in the amplifier stages. Full power output can be obtained from any low-level magnetic-cartridge signal source. Est. cost: $43.
POPULAR ELECTRONICS [1] May 1969 (v.30#5) pg. 27

RIAA/NAB preamplifier uses an integrated circuit operational amplifier.
POPULAR ELECTRONICS [1] Aug 1970 (v.33#2) pg. 61
Correction POPULAR ELECTRONICS [1] Oct 1970 (v.33#4) pg. 111

Phono preamplifier circuit uses two integrated circuits.
POPULAR ELECTRONICS [1] Jul 1971 (v.35#1) pg. 80

Circuit to perform frequency response tests on phono preamplifiers and FM tuners. Est. cost: $25.
POPULAR ELECTRONICS [1] Jan 1977 (v.11#1) pg. 71

Build a high-performance phono preamplifier. Features low noise and distortion and allows choice of cartridge types. Est. cost: $99.
POPULAR ELECTRONICS [1] Mar 1981 (v.19#3) pg. 79
Correction POPULAR ELECTRONICS [1] Jun 1981 (v.19#6) pg. 6

Build this precision equalizer/preamp to pinpoint the truly correct impedance match between a phono cartridge and receiver preamp for the best high-frequency response. Est. cost: $50.
POPULAR ELECTRONICS [1] May 1982 (v.20#5) pg. 70

A hands-on approach to op-amp basics. How they work and three projects to further your understanding of this extremely adaptable device. (1) RIAA phono preamp. (2) RF sniffer. (3) Electronic thermometer.
POPULAR ELECTRONICS [2] Feb 1998 (v.15#2) pg. 31
Correction POPULAR ELECTRONICS [2] Apr 1998 (v.15#4) pg. 6
Added Info POPULAR ELECTRONICS [2] Jun 1998 (v.15#6) pg. 6

Phono preamp and graphic equalizer circuit is built around a 5532 dual low-noise high-performance op-amp.
RADIO-ELECTRONICS Jul 1982 (v.53#7) pg. 92

Phono preamp circuit for a magnetic cartridge uses the National LM387 IC.
RADIO-ELECTRONICS Mar 1986 (v.57#3) pg. 8

Ceramic pickup equalizing pickup. A preamplifier designed to straighten the frequency output curve from a ceramic pickup's signal prior to being fed to a flat amplifier. Est. cost: $4.
RADIO-TV EXPERIMENTER Feb-Mar 1967 (v.22#1) pg. 55