Updated:
8 Jan 2014
2003 letters added
This gallery is in course of arrangement
Letters & Circuit Ideas
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|
Updated:
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| Subject | Letter issue | Page
| Advanced Preamplifier design: Reply to A J Watts (letter Jan 1984) | Feb | 1977 | p55 | S
| 
Comment on Ben Duncan "Trivial amplifiers" letter (Jan 1980) | May | 1980 | p53 | S
| Preamp design: Reply to Armstrong (letter in same issue) | April | 1984 | p51
| Preamp design: Reply to Armstrong (letter Nov 1984) | April | 1985 | p75 | S
| Reply to Curl & Armstrong on Electrolytics and Distortion (letters Nov 1985) | Feb | 1986 | p43 | S
| Electrolytics and distortion | July | 1986 | p22 | S
| Reply to Les Sage on Moving-Coil Preamp (letter, article, Dec 1987) | Apr | 1988 | p333 | S
| Reply to G Nalty on Moving-Coil Preamp (Dec 1987) | June | 1988 | p541
| Reply to G Nalty on Moving-Coil Preamp (Dec 1987) | Oct | 1988 | p983
| Hybrid MOSFET output: comments on Ivor Brown (Feb 1989) | May | 1989 | p514 | S
| Comments on Ivor Brown letter (July 1989) | Nov | 1989 | p1086
| Comments on Steckel letter (Sept 1989) | Dec | 1989 | p1210
|
Reply to W Groome on Blomley amplifier scheme (Jan 1992) | Apr | 1992 | p318
| Comments on McLoughlin amplifier | Aug | 1992
| Comments on Tim McCormick's Microphone preamplifier article (June 1992) | Sept | 1992
| Reply to R Gough on the body as a cosmic keyboard (Aug 1993) | Oct | 1993
|
Comments on Jerry Mead's Subjectivist listening tests (Nov 1993) | Jan | 1994
| Reply to Ivor Brown's letter in same issue | Feb | 1994
| Reply to Ann Silk's letter (Jan 1994) | Mar | 1994
| Thermal distortion: Reply to Ben Duncan. | May | 1994
| Amplifier PSRR: Reply to Ben Duncan | June | 1994 | p508
| Amplifier design: Reply to Maynard & Bull | Aug | 1994 | p692
| Reply to V J Hawtin on MOSFET input | Dec | 1994 | p1037
| Reply to Phil Randal on amplifier sound | Dec | 1994 | p1037
|
Reply to Doug Eleveld on current drive | Jan | 1995 | p68
| Reply to Graham Nalty on amplifier design | Feb | 1995 | p149
| Reply to V J Hawtin on slewing | Feb | 1995 | p151
| Comment on Stochino Feedfoward Amplifier | Mar | 1995 | p245
| Reply to Cyril Bateman on Audio Power Supplies | May | 1995 | p437
| Slewing: Reply to Ben Duncan | June | 1995 | p500
| Circuit Misrepresentation: Reply to Ben Duncan | June | 1995 | p501
| MOSFETs: Reply to Hawtin | June | 1995 | p501
| Subjectivism: Reply to Erik Margan | June | 1995 | p501
| Open-loop Bandwidth: Reply to Ivor Brown | June | 1995 | p502
| MOSFETs: Reply to Koji Kiyokawa | July | 1995 | p596
| MOSFETs: Reply to Bengt Olsson | July | 1995 | p597
| MOSFETs: Reply to Laszlo Gaspar | July | 1995 | p597
| Symmetry: Reply to Bengt Olsson | Oct | 1995 | p887
| Symmetry: Reply to JL Hood | Oct | 1995 | p887
| Symmetry: Reply to Ben Duncan | Oct | 1995 | p887
|
Speaker Cables: Reply to Ben Duncan | Mar | 1996 | p253
| Symmetry: Reply to Koji Kiyoleawa | Apr | 1996 | p330
| Speaker Cables: Reply to Allen Wright | June | 1996 | p478
| Symmetry: Reply to Bengt Olsson | Sept | 1996 | p701
| Class-S: Reply to Aubrey Sandman | Jan | 1997 | p83
| Miscellania: Reply to Wright | Jan | 1997 | p83
| Speaker Cables: Reply to Cyril Bateman | Mar | 1997 | p260
| Preamp: Reply to Michael Hutchings | Apr | 1997 | p319
| Crossover distortion: Reply to J N Ellis | Oct | 1997 | p861
| Silvered waveguides | Nov | 1997 | p965
|
Amplifiers: Reply to Cyril Bateman | Jan | 1998 | p44 | S
| Comments on JLH "Gain Stages" article | Oct | 1998 | p859 | S
|
Comments on Colin Wonfor's Class-A amplifier | Aug | 1999 | p682 | S
| Comments on Russel Breden's power amplifier | Aug | 1999
|
Reply to Ellis on emitter degeneration | May | 2000 | 587 | S
| Comments on Anthony New on THD/IMD | Oct | 2000 | p825 | S
| Comments on Bongiorno's letter on crossover distortion | Mar | 2001 | p236 | S
| Comments on Norman Thagard phono preamp | May | 2001 | p389 | S
| Comments on Norman Thagard phono preamp | Nov | 2001 | p855
| Reply to William Cross (Oct 2003) | Nov | 2003 | p55
| No Amps For Sale | Aug | 2004 | p54
| Reply to Bram Melse on Class-XD | Mar | 2007 | p52
| Condemnation of "Reduce Ear Fatigue In Power Amps" by Wangeri Kaguongo | Sept | 2009 | p | Comments
| Reply to Mike Turner on Zobels inside the output coil | May | 2010 | p16 | S
| | |||||||||
This list too is growing slowly as I find a few minutes here and there to add to it.
| Author | Subject | Issue | Page
| 1960
|
1961
|
1962
|
1963
|
1964
|
1965
| K C Johnson | Class-D | May | 1965 | p246 | S
| D R Birt | Class-D | May | 1965 | p247 | S
| Turnbull & Townsend | Class-D | Jun | 1965 | p287 | S
| Clive Sinclair | Class-D | Jun | 1965 | p289 | S
| D P Franklin | Class-D | Jun | 1965 | p289 | S
| Harknet, F Butler | MOSTs | July | 1965 | p334 | S
| B D Josephson, F Butler | Class-D | July | 1965 | p336 | S
| D R Birt | Class-D | Aug | 1965 | p401 | S
| Derek Lane-Smith | Class-D | Aug | 1965 | p402 | S
| D Bosman | Class-D | Sept | 1965 | p440 | S
| (Yes, that's the Josephson who became a Nobel Prize laureate in 1973 for the prediction of the eponymous Josephson effect)
|
1966
| J Dinsdale | Dinsdale Amplifier | Feb | 1966 | p82
| F Butler | Bailey 20W Amplifier (with reply) | Dec | 1966 | p611 | S
|
1967
|
1968
| P A Johnson | Comments on "High Input-Impedance Amplifier Circuits" | Sept | 1968 | p303 | S
| Ian Leslie | Comments on "Loudness Control for a Stereo System" | Sept | 1968 | p303 | S
| K H Green | Comments on "High Input-Impedance Amplifier Circuits" | Dec | 1968 | p465 | S
| H W Holdaway | Comments on "Low Distortion Class-B Output" | Dec | 1968 | p465 | S
|
1969
| D Austin | Comments on "Negative Feedback and Hum" by G W Short (with reply) | Jun | 1969 | p273 | S
| I G Abelson | Comments on "Negative Feedback and Hum" by G W Short (with reply) | July | 1969 | p336 | S
| John Linsley Hood | Comment on "Vital Statistics of an Audio Amplifier" by R Williamson | July | 1969 | p337 | S
| L Nelson-Jones | Minimum standing current in Class A (with reply) | Sept | 1969 | p415 | S
| N W Vale | Class A/B amplifiers | Sept | 1969 | p415 | S
| Peter Baxandall | Symmetry in Class B | Sept | 1969 | p416 | S
| John Linsley Hood | Amendments to Class A Amplifier | Oct | 1969 | p471 | S
| Gordon J King | Measuring crossover distortion | Oct | 1969 | p473 | S
| K Clayson | Crossover distortion in Bailey Amplifiers (with reply) | Oct | 1969 | p473 | S
| I G Johnson | Class A Amplifier efficiency | Nov | 1969 | p535 | S
|
1970
| Peter Baxandall | Symmetry in Class B | July | 1970 | p330 | S
| Peter Baxandall | Symmetry in Class B | Aug | 1970 | p386 | S
| John Linsley Hood | Class-AB Amplifiers | Aug | 1970 | p387 | S
| M Smith & H P Walker | Class-AB Amplifiers | Sept | 1970 | p442 | S
| L R Avery | ICs in preamplifiers | Sept | 1970 | p442 | S
| John Linsley Hood | Class-AB Amplifiers | Oct | 1970 | p489 | S
|
1971
|
1972
|
1973
| J Moir | Doppler Effect in Loudspeakers | Feb | 1973 | p74 | S
| Mornington-West etc | Audio Amplifier Design | May | 1973 | p246 | S
| H D Garland | Biamplifier Loudspeakers | Jun | 1973 | p294 | S
| J Ross McDonald | Comment on "Distortion Reducer" | Jun | 1973 | p295 | S
| Reg Williamson | Magnetic Pickup Loading | Jun | 1973 | p295 | S
| J L Hood | Amplifier Design | Jun | 1973 | p296 | S
| J R Stuart | Feedback Amplifiers: Replies by P G Craven, H P Walker & J L Hood | July | 1973 | p330 | S
| R L Arthurton | Record Equalisation | Oct | 1973 | p497 | S
| Gordon J King | Magnetic Pickup Loading | Dec | 1973 | p592 | S
|
1974
| The Jan and Feb issues did not appear.
| Peter Walker | Damping Factor | May | 1974 | p148 | S
| M Hartley Jones | Howl suppressor | May | 1974 | p148 | S
| D J Bradshaw | Active Filter Crossover Networks | May | 1974 | p149 | S
| S J Court | Damping Factor. Reply by Peter Walker | July | 1974 | p228 | S
| J L Hood | Amplifier Design | Sept | 1974 | p449 | S
|
1975
| J L Hood | Audio Amplifier Settling Time | Jan | 1975 | p18 | S
| T Paravicini, A Radford | Radford Amplifier Claims | Jan | 1975 | p19 | S
| T Magchielse | Series & Parallel Feedback | Feb | 1975 | p68 | S
| K C Gale | Active Crossover Networks | Feb | 1975 | p68 | S
| G W Short | Reducing Amplifier Distortion | Mar | 1975 | p127 | S
| G J King, J L Hood | Audio Amplifier Settling Time | Mar | 1975 | p127 | S
| Peter Walker | Audio Amplifier Load Specification | Dec | 1975 | p568 | S
|
1976
| J G Bennett | Current Dumping | Apr | 1976 | p54
|
1977
| A J Watts | Advanced Preamplifier design | Feb | 1977 | p55 | S
| G J Barton | Slew-Rate in Amplifiers | Sep | 1977 | p81
| Walt Jung | Advanced Preamplifier Design | Sep | 1977 | p82 | S
|
1978
| Tim Paravicini | Audible Amplifier Distortion | Jan | 1978 | p43 | S
| Stan Curtis | Audible Amplifier Distortion | Jan | 1978 | p43 | S
| James Moir | Audible Amplifier Distortion | Jan | 1978 | p43 | S
| Peter Baxandall | Audible Amplifier Distortion | Jan | 1978 | p44 | S
| Peter Baxandall | Audible Amplifier Distortion | May | 1978 | p49 | S
|
1979
| Vanderkooy & Lipshitz | Distortionless Current Dumping | May | 1979 | p71 | S
|
1980
| Ben Duncan | Trivial amplifiers | Jan | 1980 | p79 | S
| S Lipshitz | RIAA grossly in error | Jan | 1980 | p80 | S
| Jens Langvad | Rumble cancellation filter | Mar | 1980 | p61 | S
c
|
1981
| Dave Brinicombe | Just Detectable Distortion | May | 1981 | p56
| James Moir | Just Detectable Distortion | May | 1981 | p57
| A Foord | Low Noise Amplification | Aug | 1981 | p41 | S
| Graham Holliman | Filter Transient Response (Hamill filter) | Oct | 1981 | p55 | S
|
1982
| Ed Cherry | Distortion at the Amplifier-Speaker Interface | Jan | 1982 | p39
| Matti Otala | Distortion at the Amplifier-Speaker Interface | Jan | 1982 | p39
| J Pratt | Low-Noise Amplification | Jan | 1982 | p41
| A Foord | Low-Noise Amplification | Jan | 1982 | p41
| D Lawson-Harris | Linear Power Amplifier | Jan | 1982 | p40 | S
| S Frost | Cartridge Alignment | Jan | 1982 | p40
| E Good | Linear Power Amplifier | May | 1982 | p57
| P Cryer | Cartridge Alignment | June | 1982 | p49
| R Maude | Blumlein & Stereo | Aug | 1982 | p60
| R Gilson | Cartridge Alignment | Aug | 1982 | p57
| F Clifford | Low Distortion Wien Oscillator | Oct | 1982 | p65
| R N Marsh | Double-Blind Listening Tests | Oct | 1982 | p63
| N M Allinson | Class S | Dec | 1982 | p65
|
1983
| A Sandman | Class S | Jan | 1983 | p60 | S
| Dagnall, JLH | Modular preamplifier | Jan | 1983 | p64 | S
| G Dennes | Pickup Arm Geometry | Feb | 1983 | p60
| P Demmer | Stereo Width Control | Mar | 1983 | p52 | S
| G Hill | Discrete opamp preamp | Apr | 1983 | p50 | S
| A Mornington-West | Audio Switching | June | 1983 | p33
| P A Duval | Modular Preamplifier (JLH) | June | 1983 | p34
| John Linsley Hood | Modular Preamplifier (Reply to Duval) | June | 1983 | p35
| Peter Walker | Current Dumping | Dec | 1983 | p49
| Peter Peter Baxandall | Current Dumping | Dec | 1983 | p49
|
1984
| W Armstrong | Precision Preamplifier | Jan | 1984 | p51 | S
| M McLoughlin | Current Dumping | Feb | 1984 | p46
| Vanderkooy & Lipshitz | Current Dumping | Feb | 1984 | p49
| A Sandman | Current Dumping | April | 1984 | p50
| W Armstrong | Precision Preamplifier (Electrolytics) | Nov | 1984 | p76 | S
|
1985
| B Morgan | Differential line driver Circuit Idea comment | Feb | 1985 | p78 | S
| Vanderkooy & Lipshitz | Current Dumping | Mar | 1985 | p72 | S
| John Curl | Electrolytics and distortion | Nov | 1985 | p19 | S
| W Armstrong | Electrolytics and distortion | Nov | 1985 | p19
|
1986
| K Hall | Electrolytics and distortion | April | 1986 | p37 | S
| B Powell | Electrolytics and distortion | May | 1986 | p22 | S
| David White etc | Electrolytics and distortion | July | 1986 | p22 | S
| John Curl | Electrolytics and distortion | Aug | 1986 | p28 | S
| Graham Nalty | Transistor heating and distortion | Oct | 1986 | p13
| Les Sage | Comments on capacitor distortion | Oct | 1986 | p13 | S
|
1987
| Nigel Pritchard | Reply to G Nalty on transistor heating (Oct 1986) | Jan | 1987 | p62
| Les Sage | Comments on Margan non-switching amplifier (July 1987) | Sept | 1987 | p915
| Erik Margan | Reply to Les Sage re Margan non-switching amplifier | Nov | 1987 | p1131
|
1988
| Les Sage | Comments on Moving-Coil Preamp | Feb | 1988 | p135
| B J Pollard | Comments on Crossover by Egerton | Jul | 1988 | p681 | S
| Duncan Kitchin | Comments on Science & Subjectivism article (July 1988) | Aug | 1988 | p755 | S
| John Linsley Hood | Comments on Science & Subjectivism article (July 1988) | Sept | 1988 | p860 | S
| Reg Williamson | Comments on Science & Subjectivism article (July 1988) | Sept | 1988 | p861 | S
| John Howarth | Comments on Science & Subjectivism article (July 1988) | Sept | 1988 | p861 | S
| S J Shorey | Comments on Science & Subjectivism article (July 1988) | Sept | 1988 | p861 | S
| D L Chell | Comments on Science & Subjectivism article (July 1988) | Dec | 1988 | p1189 | S
|
1989
| Stephen Gift | Comments on Feedback & FETs | July | 1989 | p683 | S
| Ivor Brown | Comments on Feedback & FETs | July | 1989 | p683 | S
| Peter van der Wurf | Feedforward | July | 1989 | p684 | S
| Reg Williamson | Comments on Science & Subjectivism article (July 1988) | Nov | 1989 | p1067
| Steve Price | Comments on Science & Subjectivism article (July 1988) | Nov | 1989 | p1067
| F J P Crampton | Comments on Science & Subjectivism article (July 1988) | Nov | 1989 | p1068
| S Woodstock | Comments on Science & Subjectivism article (July 1988) | Dec | 1989 | p1213
|
1990
| Les Sage | Comments on JLH amplifier article (Nov 1989) | Mar | 1990 | p236
| Peter Baxandall | Amplifier listening tests | Jun | 1990 | p520
| Stan Curtis | Preamplifier design | Aug | 1990 | p717
|
1991
| J N Ellis | Amplifier bias currents | Jan | 1991
| Michael McLoughlin | Thermal compensation of Output Stage | April | 1991
| Peter Baxandall | Comments on Current-Dumping etc | May | 1991
| A Sandman | Comments on Class D | Sept | 1991
|
1992
| Peter Blomley | Reply to W Groome on Blomley amplifier scheme | Mar | 1992 | p232
| M McLoughlin | Crossover Distortion | April | 1992 | p320
| Greg Ball | Distortion from PSUs | May | 1992 | p407
| Kendall Castor-Perry | Amplifier classes | May | 1992 | p408
| Peter Vaughan | Rebuttal of Ben Duncan | June | 1992 | p477
|
1993
| Pickering & Hadley | Microphone Preamplifiers | Feb | 1993 | p123
| Yorke & Blake-Coleman | Loudspeaker Cables | May | 1993 | p391
| Greg M Ball | Overlook THD at your Peril | Aug | 1993 | p676
|
1994
| Graham Maynard | Sliding-Bias Amplifiers | June | 1994 | p509
| Marcel van de Gevel | Quiescent Current Control in Amplifiers | June | 1994 | p509
| Chris Bulman | Quiescent Current Control in Amplifiers | June | 1994 | p509
| Yorke & Blake-Coleman | Hifi Cables | June | 1994 | p510
| Alan Dyke | Hifi Voodoo | June | 1994 | p510
| S Merrick | Amplifier Distortion | July | 1994 | p596
| Hugh Haines | Amplifier Distortion | July | 1994 | p596
| Jerry Mead | Amplifier Distortion | July | 1994 | p596
| Chas Frizell | Hifi Cables | Aug | 1994 | p693
| R Tufft | Hifi Cables | Aug | 1994 | p693
| Reg Williamson | Quantified Listening Pleasure | Sept | 1994 | p787
| Phil Denniss | Listening Tests | Oct | 1994 | p850 | S
| Wal Hensby | Loudspeaker Crossovers | Oct | 1994 | p850 | S
| Marcel van de Gevel | Quiescent Current Control in Amplifiers | Oct | 1994 | p852 | S
| Doug Eleveld | Linear Thinking | Nov | 1994 | p949
| V J Hawtin | MOSFET input | Dec | 1994 | p1035
| Jan Didden | Stochino's Feedforward | Dec | 1994 | p1037
| Phil Denniss | Subjective Bias | Dec | 1994 | p1039
| Graham Nalty | Musical Components | Dec | 1994 | p1039
|
1995
| V J Hawtin | Comments on Slewing | Feb | 1995 | p151
| V J Hawtin | Power MOSFETs | Apr | 1995 | p323
| Erik Margan | Golden Ears | May | 1995 | p437
| Cyril Bateman | Audio Power Supplies | May | 1995 | p437
| S W Davis | Slewing: Rebuttal of Ben Duncan | June | 1995 | p500
| Ben Duncan | Misrepresentation of RC values | June | 1995 | p501
| Simon Rambert | Self Amplifier Designs | June | 1995 | p501
| Ivor Brown | Open-loop Bandwidth | June | 1995 | p502
| Koji Kiyokawa | MOSFETs | July | 1995 | p595
| Bengt Olsson | MOSFETs | July | 1995 | p597
| Laszlo Gaspar | MOSFETs | July | 1995 | p597
| Giovanni Stochino | Feedforward | July | 1995 | p597
| Erik Margan | Audibility, Bootstrapping | Aug | 1995 | p678
| Richard Brice | MOSFETs vs BJTs | Aug | 1995 | p678
| Ian Benton | Germanium & crossover | Aug | 1995 | p679
| Ben Duncan | Slew Rates | Aug | 1995 | p679
| Mark Plews | Audio Chain | Aug | 1995 | p679
| Ken Hough | MOSFETs vs BJTs | Oct | 1995 | p885
| Bengt Olsson | Symmetrical Amplifiers | Oct | 1995 | p886
| Graham Maynard | Symmetrical Amplifiers | Oct | 1995 | p887
| Ed Cherry | Rebuttal of Duncan Delayed Audio | Nov | 1995 | p956
| A D Ryder | Sallen & Key Distortion | Nov | 1995 | p958
| John Watkinson | Debating Feedback | Nov | 1995 | p958
| Peter Skirrow | Sallen & Key Distortion | Dec | 1995 | p1069
| J R Allinson | Current Feedback | Dec | 1995 | p1070
| E J Chadderton | Square Law Amplifier | Dec | 1995 | p1070
| E J Chadderton | Valve Amplifiers | Dec | 1995 | p1070
|
1996
| Walt Jung | Sallen & Key Distortion | Jan | 1996 | p35
| D C Haigh | Improving Hot Audio | Jan | 1996 | p36
| Koji Kiyoleawa | FET Linearity | Jan | 1996 | p37
| Clyve J Caines | Amplifier Debate | Jan | 1996 | p39
| Ben Duncan | Reply to Cherry | Jan | 1996 | p39
| Frank Ogden | Reply to Morgan Jones | Feb | 1996 | p157
| A D Ryder | Sallen & Key Distortion | Feb | 1996 | p158
| Morgan Jones | Valve Amplifiers | Mar | 1996 | p252
| Simon Yorke | Valve Amplifiers | Mar | 1996 | p252
| Donald Pearce | Duncan & Speaker Cables | Mar | 1996 | p252
| Malcolm Hawksford | Current Drive Amplifiers | Mar | 1996 | p253
| J C Baumeister | I vs V feedback | Apr | 1996 | p330
| Nick Wheeler | Agreeable Distortion | Apr | 1996 | p332
| M H McFadden | Valve Misunderstanding | Apr | 1996 | p332
| Stephen Cole | Shame About The Error | Apr | 1996 | p332
| Phil Denniss | Reply to Duncan re Speaker Cables | Apr | 1996 | p332
| Simon Bateson | Sallen & Key Distortion | Apr | 1996 | p333
| Allen Wright | Valve Amplifiers | May | 1996 | p428
| Allen Wright | Reply to Self re Speaker Cables | May | 1996 | p428
| Anthony Hopwood | Ancient Valve Myth | May | 1996 | p477
| Michael Williams | Reply to Duncan re Cables | June | 1996 | p477
| J C Pledger | Reply to Duncan re Cables | June | 1996 | p477
| Robert Pease | Golden Ears | July/Aug | 1996 | p588
| Morgan Jones | Valve Amplifiers | July/Aug | 1996 | p588
| Bengt Olsson | MOSFETs vs BJTs | July/Aug | 1996 | p590
| Robert Higginson | Speakers & Current Feedback | July/Aug | 1996 | p603
| Chris Bulman | Speaker Cables & 10mV Diodes | Sept | 1996 | p700
| Phil Denniss | Reply to Duncan re Speaker Cables | Sept | 1996 | p700
| A Sandman | Amplifier Thermal Effects | Oct | 1996 | p793
| Edward Dell | Valve distortion | Nov | 1996 | p868
| A Wright | On 10 mV diodes | Nov | 1996 | p868
| A Sandman | Class-S | Dec | 1996 | p988
| K Ellis | Hawksford Error-Correction | Dec | 1996 | p988
|
1997
| M Hudson | Balanced phono preamps | Jan | 1997 | p84
| John Linsley-Hood | Correction to Class-A article | Jan | 1997 | p84
| Gareth Connor | Opamps & caps: Reply to Wright | Feb | 1997 | p171
| Cyril Bateman | Speaker Cables | Mar | 1997 | p260
| John Watkinson | Speaker Cables | Apr | 1997 | p313 | S
| Cyril Bateman | Speaker Cables | Apr | 1997 | p313 | S
| M Hewlett | Speaker Cables | Apr | 1997 | p313 | S
| Witold Waldman | Crossover design | Apr | 1997 | p316 | S
| Michael Hutchings | Self Preamp | Apr | 1997 | p318 | S
| Nanno Herder | Error Correction | Apr | 1997 | p320 | S
| John Woodgate | Speaker Cables | May | 1997 | p413
| A Ziemacki | Power Amp Instability | Aug | 1997 | p693 | S
| Steve Winder | Balanced inputs | Aug | 1997 | p693 | S
| William de Bruyn | Disk preamps | Aug | 1997 | p694 | S
| David Thomas | AD797 instability | Aug | 1997 | p695 | S
| Bruce Colledge | 5532s | Aug | 1997 | p695 | S
| J N Ellis | Crossover distortion | Sept | 1997 | p786 | S
| Ken Hough | Amplifier stability | Dec | 1997 | p1051
|
1998
| Cyril Bateman | Amplifiers | Jan | 1998 | p44 | S
| Jim Ussalis | Silvered waveguides | Apr | 1998 | p350
| George Evans | Fletcher & Munson | June | 1998 | p524
|
1999
| E Cecconi | Cahner Active Crossover | June | 1999 | p524 | S
| Erik Margan | Cahner Active Crossover | June | 1999 | p524 | S
| Michel Debuysscher | Cahner Active Crossover | Aug | 1999 | p681 | S
| Jack Kouzoujian | Cahner Active Crossover | Aug | 1999 | p681 | S
| Richard Woollcott | Pass Zen Amplifier | Aug | 1999 | p682 | S
| Brian Pollard | Active Crossovers | Nov | 1999 | p958 | S
| S de Boer | Active Crossovers | Nov | 1999 | p958 | S
|
2000
| Clas Wanning | Auto-Intermodulation & Cherry | Apr | 2000 | p342
| J N Ellis | TID: RIP? | May | 2000 | p435
| Graham Maynard | Input Filter Distortion | Aug | 2000 | p666 | Comments
| Jo Atkin | Output IM Distortion? | Aug | 2000 | p667
| John Woodgate | THD meaningless? | Sept | 2000 | p747
| Phillip Regalia | IMD versus THD | Oct | 2000 | p825
| Bernard Jones | IMD versus THD | Oct | 2000 | p825
| John Ellis | IMD versus THD | Oct | 2000 | p825
| Brad Wood | IMD versus THD | Oct | 2000 | p826
| Harold Kirkham | IMD versus THD | Oct | 2000 | p827
| Anthony New | IMD versus THD | Oct | 2000 | p827
| Phil Denniss | Input filter linearity | Dec | 2000 | p987 | Comments
| John Wells | Slew rate | Dec | 2000 | p987
|
2001
| James Bongiorno | Crossover Distortion (with reply from Kimber) | Feb | 2001 | p157 | S
| J N Ellis | Input Filter Distortion | Apr | 2001 | p291 | Comments | S
| George Evans | Input Filter Distortion | Apr | 2001 | p292 | Comments | S
| Norman Thagard | Phono Preamp | May | 2001 | p390
| Phil Denniss | Input Filter Distortion | July | 2001 | p551
| Arthur Bailey | Sub-Bass | July | 2001 | p553
| Mike Hall | Phono Preamp | Aug | 2001 | p633
| Walt Jung | Phono Preamp | Aug | 2001 | p634
| Paul Schick | Phono Preamp | Aug | 2001 | p635
| Barry Taylor | RIAA cutting accuracy | Aug | 2001 | p636
| Clive Read | Low-consumption Class-A | Aug | 2001 | p637 |
| Norman Thagard | Phono Preamp | Sept | 2001 | p679
|
2002
| At this point Electronics World, for reasons unknown, decided to abandon the practice of having page numbers accumulate through the year.
| Justin Underwood | RIAA cutting accuracy | Feb | 2002 | p64
| Stan Brown | Output Inductor Crosstalk | Apr | 2002 | p55
| Edmond Stuart | MOSFET compensation | Oct | 2002 | p29
| John Watkinson | MFB speaker | Nov | 2002 | p57
| Cyril Bateman | Low distortion measurements | Nov | 2002 | p57
| Cyril Bateman | Low distortion measurements | Dec | 2002 | p40
| John Woodgate | Low distortion measurements | Dec | 2002 | p41
|
2003
| Bryan Hart | Baxandall current source | Jan | 2003 | p41
| Tuck Choy | Capacitor Sound | Jan | 2003 | p41
| Jeff Macaulay | MFB speaker | Jan | 2003 | p43
| Cyril Bateman | Capacitor Sound | Mar | 2003 | p20 | S
| Richard Black | Audio Distortion | Mar | 2003 | p23 | S
| Kevin Aylward | Amplifier Compensation | June | 2003 | p52
| Ken Hughes | Amplifier Compensation | Aug | 2003 | p54
| Burkhard Vogel | USB RIAA preamp | Aug | 2003 | p55
| Sebastien Veyrin-Forrer | DIY Audio | Aug | 2003 | p55
| Pigeon | In Praise of Audio | Aug | 2003 | p56
| John Ellis | Amplifier Compensation | Sept | 2003 | p52
| Graham Maynard | Amplifier Compensation | Sept | 2003 | p53
| D Lucas | Self-powered Amp | Oct | 2003 | p53 | S
| D Lucas | Self-made Project | Oct | 2003 | p56 | S
|
2004
| D Lucas | Audio Amplifiers | Apr | 2004 | p47
| Johannes M Didden | Analogue Switching | Apr | 2004 | p49
| Joseph Carri | April Fool? (Hybrid amp) | Jun | 2004 | p54
| Michael Hawkins | April Fool? (Hybrid amp) | Jun | 2004 | p55
| Kevin Aylward | Loop Gain | Jun | 2004 | p55
| Ron Stephenson | JLH- Too Late | July | 2004 | p55
| Sauli Palo | JLH info | Aug | 2004 | p56
| Ken Hough | Hot Air | Sept | 2004 | p49
| Stewart Ward | Class-A Imagineering Letter 1 | Sept | 2004 | p52 | Comments
| Roly Roper | Class-A Imagineering Letter 2 | Sept | 2004 | p54 | Comments
| Cyril Bateman | Class-A Imagineering Letter 3 | Sept | 2004 | p54 | Comments
| Jeff Macaulay | Class-A Imagineering Letter 1 | Oct | 2004 | p52 | Comments
| Arthur Bailey | Class-A Imagineering Letter 2 | Oct | 2004 | p52 | Comments
| Jeff Macaulay | Hybrid Amp | Oct | 2004 | p53
| Marcel van de Gevel | Erratum | Oct | 2004 | p54
| Joseph Carri | Hybrid Amp | Nov | 2004 | p52
| D Lucas | Cottaging | Nov | 2004 | p53
| E Vanderfeesten | Toroid Inrush Currents | Nov | 2004 | p54
| Michel Nieuwenhuizen | Class-A Imagineering Letter 1 | Dec | 2004 | p53 | Comments
| Phil Denniss | Class-A Imagineering Letter 2 | Dec | 2004 | p53 | Comments
| The December 2004 issue was the last with Phil Reed as editor.
|
2005
| The Jan 2005 issue was the first with Svetlana Josifovska as editor.
| Marcel van de Gevel | Noise & Moving-Magnet Cartridges | Aug | 2005 | p54
| Ian Benton | Imagineering: "First-Cycle Distortion" | Aug | 2005 | p54
|
2006
| Things at EW had changed. No audio letters printed in the entire year.
|
2007
| Ian Hegglun | THD is nonsense? | Mar | 2007 | p50
| Bram Melse | Class-XD and Reactive Loads | Mar | 2007 | p52
|
2008
| No audio letters printed in the entire year.
|
2009
| The only one so far is mine in Sept 2009. (see above)
|
2010
| Me (see above) | Reply to Mike Turner on Zobel networks inside the output coil | May | 2010 | p16 | S
| |
| Author | Subject | Issue | Page
| R H Pearson | Unusual Class-A Amplifier | Mar | 1974 | p18 | S
| S F Bywaters | RIAA-equalised Pre-amplifier | Dec | 1974 | p503 | S
| K Griffiths | Novel power amplifier | Dec | 1974 | p504 | S
|
M Oldfield | Stereo Rumble Filter | Oct | 1975 | p474 | S
|
Giovanni Stochino | Feedforward Amplifier | May | 1978 | p70 | S
|
A R van Wijgerden | Power amp with cascode MOSFET input | Apr | 1979 | p61 | S
| J Macaulay | Differential Rumble Filter | Sept | 1979 | p75 | S
|
G Hibbert | Baxandall tone control with DC bootstrap | Apr | 1980 | p89 | S
|
R Lee | "Moving-coil Preamp" | July | 1981 | p75 | S
| Q Rice | "Linear Power Amp Offers High Stability" | Oct | 1981 | p47
|
J D Thompson | "Logarithmic Dividers Using Equal Resistors" | Oct | 1983 | p58
|
B E Porter | "Tone control" | Jan | 1984 | p73 | S
| Giovanni Stocchino | "Reducing opamp crossover distortion" | April | 1984 | p35 | S
| S Whitt | "Differential line driver" | Dec | 1984 | p73 | S
|
Erik Margan | "Add-on Current Dumping" | Oct | 1985 | p40 | S
| (Actually a "keep-alive" scheme; nothing to do with error-correction or output devices in Class-C)
|
Egerton | "3-Way Crossover Network" | Jan | 1988 | p63 | S
|
Paolo Palazzi | "Hybrid valve-transistor stage" | Jul | 1989 | p692 | S
|
...
| A M Wilkes | "85 mA Opamp Output" | Mar | 1992 | p236
| John Lawson | "Rumble Filter Preserves Bass" | Apr | 1992 | p317
| Toshiba Electronics | "IGBT Audio Amplifier" | May | 1992 | p413
| Hans Hartsuiker | "50W Blomley Amplifier" | June | 1992 | p507
| ...
|
Terence Finnegan | "Precise Power Output Stage" | May | 1993 | p412 | S
|
Anon | "Current-biased Class-B Output Stage" | Aug | 1994 | p691
|
Ian Hegglun | "Fast Power Amplifier for Audio" | Mar | 1995 | p240 | S
|
Simon Bateson | "Scissors Overcome earth Loops" | May | 1996 | p402 |
| (An interesting combination of an asymmetrical balanced input and a ground-cancelling output)
|
Albert Pijuan | "Voltage Controlled Common Mode Output" | Apr | 1997 | p324
|
Peter Latsky | Active Crossover | Sept | 1999 | p779 | S
|
George Short | "Single-gang pot tunes Wien bridge" | Dec | 2000 | p971
|
Jeff Macauly | Efficient Class-A | Jun | 2001 | p467 | S
|
Martin Baumbach | USB-powered phono preamp | Jan | 2003 | p467 | S
| Richard Black | Active Crossover | Mar | 2003 | p34 | S
|
Burkhard Vogel | A-Weighting Filter | Jun | 2004 | p46 | S
| Burkhard Vogel | Electrostatic Speaker PSU | Feb | 2006 | p50 | S
|
Harrison Kaguongo | 150W AB amplifier | Jan | 2007 | p47 | Comments | S
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