Research & Development

TRANSFORMERS

011: Menno van der Veen:
"Signal level and frequency dependent losses inside audio signal transformers and how to prevent those";
paper 8360, 130th AES Convention 2011 in London.

2007: Menno van der Veen:
"Low level audio signal transfer through transformers conflicts with permeability behavior inside their cores";
122nd AES Convention 2007, Austria, paper 7125.

2004: Menno van der Veen:
“The Vanderveen MC10 Moving Coil Step-Up transformer”;
Click here to download the manual in Dutch or English”.

2003: Menno van der Veen & Piere Touzelet:
"New vacuum tube and output transformer models applied to the Quad II valve amplifier";
114th AES Convention 2003, Amsterdam; paper 5748.

1998: Menno van der Veen:
“Modelling Power Tubes and their Interaction with Output Transformers”;
104th AES Convention 1998, Amsterdam; paper 4643.

1997 : Menno van der Veen:
“Theorie en praktijk van Ringkern Uitgangstransformatoren”;
RB Elektronica, Januari 1997, pp. 9-18.

1995 : Menno van der Veen:
“Ringkern Transformatoren voor Audio?”;
RB Elektronica, Februari 1995, pp.28-33.

1994: Menno van der Veen:
“Theory and Practice of Wide Bandwidth Toroidal Output Transformers”
97th AES Convention 1994, San Francisco, preprint 3887

AMPLIFIERS

2024: Jan Didden interview in audioXpress-April-2024:
“An afternoon with Menno van der Veen”
Order at: https://cc-webshop.com/collections/archives-audioxpress-issues-pdfs/products/audioxpress-april-2024-pdf

2023: Menno van der Veen
“The Vanderveen-TRANS-PP80 Valve-Amplifier”
Download: AudioXpress_VDV-TRANS-PP80.pdf5.72 MB
Download: Trans-PP80_PCBs_Figures_Transformers_Start-up_3-3-23.zip13.59 MB
Download: Corrections-Vanderveen-Trans-PP80_version_May-2023.pdf

2023: Menno van der Veen
‘’Vanderveen-Trans-SE10 Tube Amplifier DIY-kit’’
Download the updated construction manual: MANUAL-VANDERVEEN-TRANS-SE10-1.5.4.zip 54.6 MB

See Products > Valve Electronics > Amplifier kits

2021: Menno van der Veen
“ETF-2021 Trans versus Global nfb”
Download lecture: ETF-2021_Trans_versus_Global_nfb.pdf

2021: Menno van der Veen
“The Birth of the TS2019-PP80 Amplifier”
THE BIRTH OF THE TS2019-PP80 AMPLIFIER
GERBER-PHOTO-CIRCUIT TS2019-PP80 PCB-s

2021: Srajan Ebaen (6moon):
“High-End-press Vanderveen-Trans-SE10 evaluation”
https://6moons.com/audioreview_articles/tentlabs-se10/

2021: Menno van der Veen:
“Modification-1 for the Vanderveen-Trans-SE10 kit”
Download Modification-1: Vanderveen-Trans-SE10_MOD-1_Anti-Plop.pdf

2021: Menno van der Veen:
“Vanderveen-Trans-SE10-Secrets”
Vanderveen-Trans-SE10-Secrets-AX-2021-01.pdf
Partridge_1939_Distortion_in_Xfrmr_Cores.pdf
Schade_1938_Beam_Power_Tubes.pdf

2020: Menno van der Veen:
‘’Vanderveen-Trans-SE10 Tube Amplifier DIY-kit’’
Download the construction manual: MANUAL VANDERVEEN-TRANS-SE10 1.5.2.zip37.64 MB
See Products > Valve Electronics > Amplifier kits

2019: Menno van der Veen:
“Build an 18 W Single-Ended Valve Amplifier with Trans Technology”
2019-december-AudioXpress VDV-TRANS-SE18 artikel.pdf
Order Transformers at: valve-electronics/amplifier-kits
Order PCB’s and BOM at: meten-en-aan-buizenversterkers.nl/pcb-webshop

2019: Arjen van den Hoek:
“UL40-S2 Autobias Ig2 compensation”
UL40-S2-Autobias-Ig2-compensation_vs-03.pdf

2018: Menno van der Veen:
“TubeSociety 2A3-300B-SE Amplifiers (Part 2)”
AudioXpress, May 2018, pp. 46-57

2018: Menno van der Veen:
“TubeSociety 2A3-300B-SE Amplifiers (Part 1)”
AudioXpress, April 2018, pp. 50-59

2017: Menno van der Veen:
“Modern Tubes in the UL40-S2”;

2016: Menno van der Veen:
“Trans Adventures”;

2010: Menno van der Veen:
“New record buffer isolates the MCML05 from its environment”;

2010: Menno van der Veen
Download the PR20HE service manual in PR20HE-UK.zip8.46 MB, PR20HE-DL.zip15.2 MB, PR20HE-NL.zip8.51 MB

2009: Menno van der Veen:
“Second modification of the line stage with ECC99 of the Vanderveen MCML05 pre-amplifier”

2009: Menno van der Veen:
“Improved drive of the UL40-S2 power valves in ST-mode plus auto-bias”;

2009: Menno van der Veen:
“First modification of the MCML05 line stage; from ECC82 to ECC99”;

2008: Menno van der Veen:
“Auto-bias largely improves base and micro detail reproduction”;

2007: Menno van der Veen:
“Modify the UL40 Step by Step”;

2006: Menno van der Veen:
“TubeSociety TS-VV-2006 valve preamp”

2005: Menno van der Veen:
"Universal system and output transformer for valve amplifiers";
118th AES Convention 2005, Barcelona; paper 6347.
This article is a compressed summary of “The Project”.

2005: Menno van der Veen:
“The Project”

2004: Menno van der Veen:
“The Vanderveen MC10 Moving Coil Step-Up transformer”;
Click here to download the manual in Dutch or English”.

2004: Menno van der Veen:
“MCML05 Service-Manual";
download in Dutch or English

2004: Menno van der Veen:
“Screen Grid Modification”;

2004: Menno van der Veen:
“Modify the UL40-S2 into a Super-Triode amplifier”;

2002: Menno van der Veen
CFB-CFBH-SSCR_universal_test-amp.pdf

2001: Menno van der Veen:
“UL40-S2 service":
download the construction manual of the UL40-S2 in Dutch or German or English

1999: Menno van der Veen
VDV100_Updated_with_new_OPTs.pdf

1994: Menno van der Veen
“Tegenkoppeling van de werkelijkheidsweergave; delen 1,2,3 plus commentaar”
Download 1994_Menno-VDV_Radio-Bulletin_Werkelijkheidsweergave.pdf20.18 MB

1987 : Menno van der Veen:
“H-Tech buizenbak; 100 W buizen-eindversterker”;
RB Elektronica, September, pp. 26-27 en Oktober 1987, pp. 22-27

1985 : Menno van der Veen:
“Buizen-eindversterker van 40 W; de allerlaatste der Mohikanen?”;
RB Elektronica, September 1985, pp.329-333.

LOUDSPEAKERS & AMPLIFIERS

2017: Menno van der Veen:
“What happens when the Damping Factor of an Audio-Amplifier is changed?”
Lab-studies.

MEASURING

2023: TubeSociety-students
“Students of TubeSociety have updated the Arta-2 (from 2016) measuring unit into the new ARTA-2-TS”.
Besides a much better look, the electronics is cleaner, improved RF-reduction, lesser noise and safe for power supply polarity mismatch.
Find all the details at: https://www.meten-en-aan-buizenversterkers.nl/pcb-webshop.

2016: Menno van der Veen:
“All about the Vanderveen-Tentlabs-ARTA-2 measuring unit”;
Dutch language. Download Arta-2.zip-file with complete building information, inclusive PCB-gerber-files.