stepped baffles with little impact on tweeter performance All open kit, Illumina-66, cannot be licensed. mkII/Jelko 09-05-2019: Speakers and vintage stuff, High Efficiency Speakers, 16-10-2021: AudioTechnology, Peerless, BMS, Faital, 18 SOUND, Purifi, Constructions based on the 8008-HMQ high-efficiency driver. download Discovery, 22W/8534G0, 10F/8414-G10, R2604/832000 Testing Audio-gd pre-amp/headphone amplifier NFB-1AMP 08-08-2019: Vintage ScanSpeak. Over the years my focus has moved from small and inefficient speakers to 4-300-25Hex, R2604/833000 06-04-2022: The Jenzen speakers, 3-way transmission MT320 and Accuton C30-6-024 domes, Tweaking the Audax PL11WH09-08-R2604/833000 Calculation of box volume and ports. 18-10-2021: The Loudspeaker-III ranging from 2 to 300 litres volume and I hope you will find inspiration SBAcoustics, SBA-761, built by Donnie, US read Read here about the rationales behind the speakers SBAcoustics SBA-741, built by Daniel when it comes to power cords - and still is. I'm a great skeptic Bi-amping, what is it? things that chamfering driver holes. calculation of vent length. CD-T80 CD player 22-12-2021: PRELUDE, C17-mk4. My Check here Want to hear what your TW034XO-P47N dome for better performance TQWT mkIII, built by Algirdas, Lithuania Numerous home-made valve line stage strongly feel quite a few products from the PA world are more than PL14WJ-09-08/ScanSpeak R2604/832000, 2-way 11.5 liter bookshelf mini, or 25 liter CNO-GRANDE, 2 x W18NX001 + W12CY003-EC + T29CF002 (Except for TQWT mkII: 2-way transducers 03-09-2021: 21-02-2021: Speaker cables and 3-way TL from SEAS W26FX002, W18NX001 and T25C003/T29CF002, Jenzen SEAS ATELL-3 The Loudspeaker-3, built by John 03-04-2021: TQWT-mkIII, built by Pablo, Argentina Wharfedale Super 8/FS-AL & North England M8, only pics. without my written consent. Speaker cables and SEAS 5INCH minis, The Loudspeaker-2, built by Philipp Acapella LWJ, Acapella SE and Acapella SEas constructions (pdf) C17 I. 10C77 drivers is another thing, but picking 2-3 drivers and making a the right diy speaker project. its shortcomings. Phono/Line Stage Preamplifier, Hypex Ucd400, http://www.troelsgravesen.dk/Hypex-PSC2.400.htm Transcendent ScanSpeak Ekta mkII, built by Arunas The Loudspeaker 2, built by Mark CA15RLY, W15CY001, W15LY001, 22 TAF/G, Scoperta, mini C17-II, make a crossover, - please read before asking for a crossover for your

ScanSpeak Discovery-861, built by Jarkko, Finland Discontinued as kits from Jantzen Audio, source components 24-10-2020: TEST: Viawave GRT-145W-8, ribbon tweeter with waveguide AD0160/T8 tweeter Vintage Isophon P25A. Luxman MQ70 (EL34) power amplifier Back to Index, B&W 802s3, better crossover components and wiring. up-grade of newer commercial speakers as well as renovation of vintage speakers not listed below. monitor/standmount from JA8008-HMQ/T35C002 drivers Danish High Fidelity magazine preamplifiers, MC, phono and line stages. Bi-amping means you have a line-stage, a 06-07-2021: Thress EHT Integrated amplifier. ScanSpeak D2904/710003 tweeter, Illumina-66, Eminence Deltalite II 2510, JA8008 used in open baffle constructions: Jantzen Audio, Alumen-Z, test Download My built by Taxiarchis, Greece, ScanSpeak Revelator 4R, built by Ronald, The Netherlands, ScanSpeak Discovery-861, built by Tom, Canada, ScanSpeak Ekta mkII, built by Niklas, Sweden, AudioTechnology/BlieSMa, built by Harald, Germany, SEAS 3WC-mkII and SEAS-CURV, built by Maciek, ScanSpeak Discovery-861, built by Jarkko, Finland, SBAcoustics, SBA-741 + bass module, built by Lars, ScanSpeak Ellam-dappo, built by George, US, DTQWT-mkIII-212, built by Carlo, The Netherlands, ScanSpeak Subwoofer, 12", built by James, UK, QUATTRO mKII, 2-way Faital 3WC-15, Speakers based on the JA8008-HMQ high-efficiency driver, JA8008-HMQ driver, For most larger speakers I use bi-amping, SAC Find the polarity of your driver 16-03-2021: NEO3PDR (pdf), What are the Faital-3WC-10, built by Marian, Romania FLEX, 15W/8530K00 and two tweeter options, ScanSpeak Micro. ScanSpeak Revelator-851 CA18RNX, 2-way floorstander, 2 x CA18RNX + 27TDC T14RCY+SS/8513 or Hiquphon OWI Philips AD-0160-T8, world's worst dome tweeter? experiments, JBL LE26/waveguide + Goodmans Axiom 150 mkII, Supravox vintage Snell A3i loudspeaker. Part Faital-3WC-12, built by Peter SEAS CNO-4 14-01-2022: MUN17-3W, 28W/4878T00 + 18M/8631T00 + D2908/714000 06-01-2022: Super 8 RS/DD 04-04-2022:

Mix of drivers from various manufacturers, ScanSpeak, 23-05-2019: Choices, How to pick 18W/8531-G00 + 12M/4631-00 + R2904/7000 or R2604/832000 The luxury versions of Jenzen SEAS ER, Jenzen SEAS ER, high-end sound from budget drivers, Poor non-inductive graphite resistors! ScanSpeak Discovery-861, 2-way floorstander If for crossovers, solder tag strips, flaring plastic vents, damping CD player. OB-07 open SEAS 5-INCH project, built by Jarda, Czech Rep 29-09-2021: make reproduced music live and engaging. Jenzen speakers? 02-08-2021: Large domes, part Strad-EXCEL, W22EX001+W15CY001+27TFFC Builders My Panasonic TV,

New copper foils caps, AMBER-Z, from Jantzen Audio, review JBL L100 The Loudspeaker-2, built by Andrew Background experiments: the heart of the HES speakers below, TQWT/DTQWT-mkIII, JA8008-HMQ - SEAS T35C002/waveguide, DTQWT 212 mkIII,

FUSION-3 (BMS, ScanSpeak/SBAcoustics), Faital 3WC-10 (Faital, ScanSpeak) Speaker constructions featuring drivers 303 crossover 2x18W/8434-G00 + 12W/4524-G00 + D2608/913000, Studio 101 mkII, 18W/8542-10 and D2608/913000, Ellam-9800 mkII. to Index W21-3804-P2A and D3804 drivers, German SABA 2-way stand-mount from Purifi and Viawave drivers. ScanSpeak Ekta mkII, built by Niklas, Sweden 26-07-2019: 21W/8554+15M/4531-K00+R2604/832000, Jenzen SEAS NEXT Faital-3WC-10, built by Bruno, Italy larger constructions providing less distortion and increased dynamics, SEAS KIT

Builders' response SEAS KIT brochure SBAcoustics 3-Way Classic, Thoughts from Speakers' Corner with a few added comments ER, 3-way TL design from SEAS CA26RFX, ER18RNX and T25CF001 05-01-2019: 23-03-2021: Jenzen 12-11-2021: 1962 brochures 09-10-2021: supplemented by a wide range of audio grade capacitors. Problem is that very few people die - if any - 14-11-2021: CA18RLY/22TAF-G COMPACT SBAcoustics, SBA-741 + bass module, built by Lars MT320 and Accuton C30-6-024 domes, ScanSpeak tweeters, D3004/660000 and D2904/710003, D3004/6640 Beryllium Jantzen damping, please check this before writing on cabinet damping, Why it's not so easy to TEST: 6" and 8" midrange drivers 215GMF tweaking for better performance, Mll oder gut fr ein Schlechtwetterprojekt? ATS-4 26-06-2022: Purifi-6R (Purifi/Viawave) You must be My reference system

03-10-2020:

Jenzen Should you run into problems with the constructions presented from: Mix of drivers from various manufacturers, ScanSpeak, HE (ScanSpeak/AudioTechnology/BMS) 8008 surround set, built around JA8008-HMQ/SEAS T35C002, Click heading or image to go to Audio 2 x Yoshino EAR-861, 64 wpc bridged power amplifiers SEAS-CENTER-PRESTIGE, update. Axiom 150 mkII, Tweaking the QUATTRO mKII, 2-way 25-05-2022: SEAS brochure (Norwegian) on kits 223, 253, 403, 603 and Disco-47.

Vladimir Bazelkov's 6AS7 PSE, 20 wpc mono blocks, rebuilt to 6C33 tubes. are they and why are they so expensive? measurements 09-11-2021: Jelco TK850S + MSL Eminent EX cartridge available. 9900 tweeters, why they are not interchangeable. reproduction 80 watt class A solid state amp - or at least some of these watts in output transformer ScanSpeak Ellam-dappo, built by George, US What it takes to Voicing a speakers ScanSpeak Discovery 3WC, built by Marino Poor Man's Norway 06-07-2021: 11-05-2021: SEAS CENTER-641-NEXT, built by Petri, Finland Discovery 15 SBAcoustics SBA-16-MTM, built by Andre, Germany (pdf file) ScanSpeak Illuminator-Monitor, built by Richard here to see what bi-amping looks like. Make your own BMS, 18 SOUND. How flat is flat? 23-03-2021: Why my crossover 8008-CORNER, built by Martin, Czech Republic

04-06-2022: 10-04-2022: Feel Discovery-81 Scoperta, mini Size matters. bass, special 18H52 mid and ScanSpeak Be dome, 10C77, from: AudioTechnology SBAcoustics, SBA-761, floor-stander, 1st order filter Jenzen SEAS How to determine dZ. 18W/8434G00 + R2604/832000, Ellam

Testing ribbon Back to Index, Click heading or image to go to ScanSpeak constructions' overview, ATELL-3, ScanSpeak/AudioTechnology/Viawave, Illuminator-4 ScanSpeak 3W-Classic - Classic, 21W/8550-00-Eton 17-03-2021: Sponsors, Nothing for the time being. 2016 OBL-15, the successor of OBL-11, now with the new JA8008-HMQ driver 16-02-2020: Recent up-dates input Yoshino EAR-912, pre-amplifier, line-stage/phono stage Time-alignment Strad-EXCEL, W22EX001+W15CY001+27TFFC, Acapella LWJ, Acapella SE and Acapella SEas constructions (pdf), Point75i, SEAS Speakers combining various brands: Test of ScanSpeak D3004/604010 Be domes ScanSpeak Why that is not so easy. 9" Precision tonearm, Lenco L75 + Moerch 12" tonearm, vdh Colibri cartridge, Phono stage based on Transcendent RIAA schematics, Jungson Hedo/Duro power built a small high-quality 4 litre mini, Compact Studio Monitor,

Pre-study for new 3-W project. What I hear is unlikely to be what you will hear.

My system 08-04-2022: ScanSpeak Revelator 4R, built by Jerry Pre-study for new 3-W project, JA8008/TW034 and Eminence Deltalite II 2515,

None of the constructions, illustrations or Sorry, but time doesn't allow assisting Tweaking the 26-11-2021: Thailand GlowMaster KT 88 fully balanced power amp ScanSpeak D2904/710003 tweeter ScanSpeak Discovery-18W, built by Attilio and Moreno R3004/662000 Grail phono stage Read L100 Test ATC SM75-150 midrange dome FUSION, passive version, built by David Testing ribbon tweeter, Viawave GRT-145-4 06-03-2022: Test: 02-05-2021: SBAcoustics, SBA-761, built by Steve and Satori TW29RN-B, SBAcoustics SBA-61-NRXC, two-way stand-mount, SB17NRXC35-8 and OBL-7, Goodmans Eekels' minis, Waveguide for Up-date on Hypex FA251 and FA501 for full-range experiments in DTQWT cabs 02-02-2021: 18-01-2022: ScanSpeak Revelator-4R, built by Jody, US Cord Sets - Silver Plated Copper with Schuko plugs. Why that is not so easy. Faital-3WC, built by Christopher update Now with Be dome option Faital-3WC-12, built by Maxim, The Netherlands

FAQ regarding sensitivity Should I up-grade my vintage speakers? SEAS-CENTER-EXCEL 25-07-2021: questions regarding the constructions on this site, please contact me speakers, Stig Carlsson's omnidirectional speaker from the Seventies. Purifi-6R 01-03-2022: Faital-3WC-15, built by Alexey, Russia 18WU/4741T00 and D3004/660000 or I'm very

baffle experiments, Supravox 215RTF + JBL LE26/waveguide + Goodmans Jenzen Accu (Accuton/AudioTechnology) The ancient Greeks

Make your own German SABA A very common question In addition to SEAS CURV, made by Riki

AudioTechnology, ScanSpeak and Jantzen Audio, Jenzen ATS. TJL2W, W18E001 + Test of MANGER MSW For Sale News, Cabinet Thoughts from Speakers' Corner with a few added comments. 10C77 12-06-2022: layout may differ from actual schematics. ScanSpeak Discovery-861, built by Greg, US

T34A-4 34 mm dome tweeter from BlieSMa vintage SEAS 21 TV-G and SEAS 9 TV-LG and resonant boxes W22EX001+W18EX001+T25C003, Poor Man's SB26ADC-C000-4, ATS4-HE, high-efficiency version of ATS-4. of two ScanSpeak ring-radiators, R3004/662000 and R3004/602010 Read here about the rationales behind the speakers, Jenzen ATS, non-inductive graphite resistors! ScanSpeak Illuminator-71, built by Gabanguak, Thailand Unless 400 wpc digital D3806/8200 + D2010/8513, STUDIO 101, ScanSpeak 3W-Classic - Classic, 21W/8550-00-Vifa 19-11-2019: Zahra, 2 x 18W/8543-00 + baffle experiments, Supravox 215RTF + JBL LE26/waveguide + Goodmans 13-09-2021: http://www.troelsgravesen.dk/Hypex-bi-amp.htm what diffraction looks like! Norway, Review of MT320 and Accuton C30-6-024 domes ScanSpeak Discovery 3WC mkII Testing new 13-04-2022: ScanSpeak Discovery 18W, built by Andrea, Italy Acoustics. DTQWT, incl. Lenco L78/Moerch DP6 C20WH-07-08 + Monacor Acapella SEas, NEO3PDR (pdf), What are the plate-amp/DSP modules, Vintage speakers, JBL Tannoy, Wharfedale, Goodmans, etc. What is an acoustic vent, aperiodic tuning, Variovent ScanSpeak Bookshelf, built by Didier Dali800 Purifi PTT6.5-W04 6" midbass driver 11-06-2021: Testing ScanSpeak D2104/712000 3/4" dome tweeter Testing EAR Acute Classic CD-player/DAC greencones, pics, links and some modelling, Sonab OA5 mkII Description of capacitor sound found in the web. Grounding house appliances here in Denmark is uncommon except for Vifa PL14 projects, built by Steve, Australia upgraders' response to kit Amplifiers: 26W/8861T00 + 18W/8531-G00 + D2905/9900, Ellam FLEX 3W,

SEAS brochure (Norwegian) on kits 223, 253, 403, 603 and Disco-47, Goodmans http://www.troelsgravesen.dk/FUSION-FA122.htm 18-05-2022: SEAS W17EX001/SS-8513 TW034XO-P47N dome for better performance, Tweaking SWANS class A Garrard 401/LINN - Thorens TD124 mkII/Jelko shootout! Einstein The Amp Garrard 401/LINN - Thorens TD124 mkII/Jelko shootout! and you have to source components locally), ass drivers no longer Lenco L78/Moerch DP6 My Panasonic TV, 18W/8530-G00 + Accuton C44 + Hiquphon OWI high-performance/low-cost floorstander A small study and D3004/660000 14-06-2021: Hypex FA501 plate-amp/DSP, high-level Check here Illuminator-71 Room-gain, a case study Choosing the JA8008/TW034 and Eminence Deltalite II 2515, 5F/8422T01 and 10F/8414G10 full range mini drivers 1978 classic 3-way from SEAS 25 F-WBX/DD, 11FM (H130) and 1" dome (H107), SEAS kit 503, the Wide Baffles, 18W/8542-00 and SEAS 27TFFC tweeter, Zahra, 2 x 18W/8543-00 + subwoofer 26W/4558T00-26W/0-00-00, 30W/4558T00-30W/0-00-00 and Hypex FA251/FA501. creamy or crunchy - some don't. I-II-III

DTQWT, 10 or 12 ScanSpeak tweeters, D3004/660000 and D2904/710003, D3004/6640 Beryllium Some hints and tips, Measuring inductance of low-DCR coils, like C-coil, Response to upgrade from standard PP caps to super-caps, Cabinet and SBAcoustics. Which should I build? by Riccardo, SEAS 3-way Classic, mkI, built by Alexandr, ScanSpeak Ekta mkII, built by Maarten, The Netherlands, SBAcoustics, SBA-761, built by Donnie, US, ScanSpeak Discovery 18W, built by Andrea, Italy, ScanSpeak Ekta-2D, built by Chris, The Netherlands, ScanSpeak Discovery-861, built by Mogens, Denmark, NOMEX-164, BOOKSHELF, Peerless 830860, built by Per, Denmark, ScanSpeak Discovery 3WC-mkII, built by Ling, China, SBAcoustics, SBA-10, built by Mariusz, Poland, ScanSpeak Discovery 3WC-mkII, built by Zach, ScanSpeak Ellam Discovery 15, built by Gatan, SEAS 5-INCH project, built by Jarda, Czech Rep, SEAS 3-way Classic mkI, built by Jarda, Czech Rep, Discovery 3WC-mkII and -CENTER, Studio 101 mkII, and built a small high-quality 4 litre mini tweeter, Viawave GRT-145W-8.htm Can you handle the truth? contact@jantzen-audio.com. SBAcoustics, SBA-861PFCR, Illuminator, 3-way TL design from ScanSpeak W26/8861T00, 18WU/8741-T00 02-02-2021: AudioTechnology 10C77/18H52 and ScanSpeak Be dome, Jenzen D mkII, 3 way Read Use a Hypex FA251 or FA501 as a power amp for bi-amping We ought to have Schuko 26-02-2022: measuring equipment, books and articles useful for getting started in ScanSpeak Illuminator-MONITOR, built by Malik JBL L100 Century tweeter, Viawave GRT-145W-8.htm, Testing ribbon tweeter, Viawave GRT-145-4, Testing EAR 912 preamplifier with phono-stage, Testing Alumen Z-Caps from Jantzen Audio, a new foil capacitor, Testing Audio-gd pre-amp/headphone amplifier NFB-1AMP, Test Faital 3WC-12, built by Giacinto, Italy ScanSpeak Subwoofer, 12", built by James, UK DTQWT, incl. 08-10-2021: vintage SEAS 21 TV-G and SEAS 9 TV-LG and resonant boxes, Clarion by SEAS, a 08-08-2019: 24-06-2021: Study on Phono Stage

I'm particularly grateful to Jantzen Audio for taking the financial risk Can we calculate box volume at all?

02-04-2021: 2D), All Hypex related pages (for my own recollection): tapered quarter-wave design, JA8008+TW034/waveguide Open-baffle: OBL-15, built by Andrea (Module no longer available) 9900 tweeters, why they are not interchangeable 16-04-2022: ScanSpeak Discovery-861, built by Alain, New Zealand 18-01-2022: Go to bi-amping All technical questions, power amp, Jungson JA88D-09, 2 x 80 watt class A solid state amp, Maglev damping, please check this before writing on cabinet damping 6N6P line stage with 28-07-2019: Faital 3-Way Classic, 93 dB sensitivity, stunning dynamics Should I up-grade my vintage speakers? 28-03-2021: from not having our household appliances fully grounded. Waveguide for TEST: Purifi-6R, stepped baffles with little impact on tweeter performance. 28-04-2021: Jenzen SEAS NEXT

may be art if enough people think it is. FAQ regarding sensitivity input, Testing ScanSpeak D2104/712000 3/4" dome tweeter, Edge-coating and linear distortion, prelude to CNO-GRANDE construction, New copper foils caps, AMBER-Z, from Jantzen Audio, review. 5F/8422T01, the smallest speaker I've ever made

SAC 18W/8545-K00 + R2604/832000, ScanSpeak 3-Way Classic, Beaming. MAYA, Ludwig line designs http://www.troelsgravesen.dk/TL-2_FA501.htm Thress EHT Integrated amplifier. Faital-3WC-12, built by Itsik Acapella SE (single pdf file) Test of EAR-861 for mid-tweeter. DIY Loudspeaker standards, but we don't. Without their support these drivers would never ScanSpeak 32W/4878T11 for Ellipticor-3 now ready for sale, Vifa PL14 projects, built by Steve, Australia, ScanSpeak Ekta mkII, built by Michael, Italy, SEAS CENTER-641-NEXT, built by Petri, Finland, Peerless NOMEX-164-mkII, built by Paul, Canada, ScanSpeak Discovery-18W, built by Attilio and Moreno, ScanSpeak Illuminator-MONITOR, built by Malik, ScanSpeak Discovery-861, built by Alberto, Italy, ScanSpeak Discovery-861, built by David, Spain, SBAcoustics, SBA-861-PFCR, built by Sebastian, Sweden, ScanSpeak Discovery-861, built by Greg, US, ScanSpeak Revelator-4R, built by Jody, US, SBAcoustics, SBA-861-PFCR, built by Mircea, ScanSpeak Discovery 3WC-mkII, built by Timo, Finland, Faital-3WC-15, built by Peter, The Netherlands, The Loudspeaker-3, built by Dominique, France, ScanSpeak Illuminator-Monitor, built by Thomas, US, SEAS Jenzen NEXT, update on build by CC Li, Hong Kong, Faital-3WC-15, built by Bartlomiej, Poland, ScanSpeak Illuminator-7751, built by Mike, ScanSpeak Illuminator-7751, built by Goran, ScanSpeak Discovery-861, built by Alain, New Zealand, SBAcoustics SBA-16-MTM, built by Andre, Germany, SBAcoustics SBA-16-MTM, built by Marcus, Sweden, ScanSpeak Illuminator-Monitor, built by Richard, CNO-GRANDE, built by Bas, The Netherlands, Faital-3WC-12, built by Maxim, The Netherlands, ScanSpeak Illuminator-71, built by Gabanguak, Thailand, Ekta G, Disc-3WC-mkII, Studio 101-mkII, SEAS CNO-mkIII, built

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