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The McIntosh MC30 'Capacitor Adventure' just became ...


For those of you who have been following along, Mr. Shirokazu Yazaki (below, second from left) of SPEC Corporation fame (The Real Sound Amplifier, et al) encouraged me to try a 'Capacitor Adventure' with one of my vintage McIntosh amplifiers (MC30 monaural amplifiers, MC225 stereo amplifier, and MC240 stereo amplifier). My MC30 monaural amplifiers and... Read More »


Intact Audio Custom SUTs - HiFi Heroin That'll Get You Hooked!


Ok, the title of the post is a bit of play on words: HiFi Heroin is a website of fine audio constructeurs, one of which is Dave Slagle of Intact Audio. Dave offers bespoke step-up transformers (SUTs) out of copper or silver with delicious nickel cores that are tailored specifically to bring out the best... Read More »


The Great Capacitor Adventure! Part Two.


The first step in our capacitor adventure was to dismantle my McIntosh MC30 monaural amplifiers and take a look inside at the very nice handiwork of Mr. Yves Beauvais. I purchased my MC30 monaural amplifiers at Yves' retail asking price through his Vintage Vacuum Audio business. Be sure to check out the accompanying links about Yves, you should know that... Read More »


The Great Capacitor Adventure! The aroma of solder is in the air!


If you've read my review of the SPEC RSA-M3 EX Real Sound Amplifier in Positive Feedback Online in Issue 78, you know how interesting I found the high-fidelity adventures of Mr. Shirokazu Yazaki to be: "I learned the audio lesson that while parts choice does make an important difference in performance, it is the 'enlightened ear' of the talented... Read More »


The Vintage Beat: Western Electric WE16GA Speaker Cable


Mr. Shirokazu Yazaki of SPEC Corporation (photo below, second from left) has told me how highly he regards the performance of vintage Western Electric WE16GA wire used as speaker cable. Mr. Shirokazu Yazaki uses the Western Electric WE16GA wire as speaker cables as his personal reference both for the research & development work he does for... Read More »


The Vintage Beat: A Forgotten Voice from the American Recording Studio


If you read my SPEC RSA-M3 EX Real Sound Amplifier review in Issue 78 of Positive Feedback Online, you know how impressed I am with the audio designs of Mr. Shirokazu Yazaki in Tokyo, Japan. (second from the left in the photograph below) It is my opinion that Yazaki-san is one of those rare gifted listeners/designers with an... Read More »


Siedy Checking In From The Netherlands: Chaos!


It's always a pleasure to hear from Siedy in the Netherlands. If you've been following along the conversations here at Jeff's Place you'll recognize Siedy as the gentleman responsible for me becoming aware of the powerful and musical ASR Emitter II Exclusive Version Blue amplifier that was developed by Mr.Friedrich Schaefer in Germany. Siedy used the... Read More »


The Garrard Project 2015


I remember Srajan over at Six Moons telling me way back when that The Garrard Project series of articles (1, 2, 3) I wrote starting in 2004 were the most read articles in Six Moons history. I was surprised to hear that, but quite pleased of course! Since then, it seems that vintage Garrard - as... Read More »


Fanfare for the Common Man: The RS Line of Duelund Capacitors


I just heard about the recently released line of Duelund RS capacitors, which I had totally missed because I was so engrossed in writing the Duelund-WRSE Project Part 2 article for Positive Feedback Online. I'll try  to find out more about the recently released line of Duelund RS  capacitors from Frederik (a future interview perhaps?), but... Read More »


The Duelund-WRSE Project, Part 2: Duelund CAST Silver Capacitors and Duelund CAST Silver & Copper Autotransformers – Listening Impressions


Here's my listening impressions for the Duelund CAST Silver Capacitors and Duelund CAST Silver & Copper Autotransformers. I hope you enjoy it! Listening Impressions The Stock Westminster Royal SE Loudspeakers Let me repeat myself a little, with excerpts from the Part 1 article of the Duelund-WRSE Project, to put everything in context for the Part 2 changes... Read More »


Part 2 of the Duelund-WRSE Project is now live at Positive Feedback Online!


Part 2 of the Duelund-WRSE Project is now live at Positive Feedback Online! Enjoy!


The Duelund-WRSE Project, Part 2: Duelund CAST Silver Capacitors and Duelund CAST Silver & Copper Autotransformers - Introduction


I just completed the second Duelund-WRSE Project article and sent it to Editors Dave & David at Positive Feedback Online. I ended up at 42 pages of Word text and 69 photographs by the time I finished it. I have to say I'm pretty excited about the article, and I really hope you all enjoy... Read More »


Today's Fresh Catch: Custom McIntosh Audio Cabinets (and a short Duelund Update)


Hi Everyone! Like usual, I've had way too many things going on at once so it has been hard for me to get some new posts up for you. One of the things I've been wanting to tell you about is some custom McIntosh audio cabinets that I have run across that I think look really... Read More »


David King Checking In: 4-Point Support for Tannoy Westminster Royals


It's always a pleasure to hear from fellow enthusiasts, and David King always has some great things to share with us about getting the most performance out of Tannoy Westminster Royals. In David's latest message he tells us about his result experimenting with 4-point support for the big West's:  Enjoy!   Tannoy Westminster Royal HE -... Read More »


Deep Into Duelund - Updated With Listening Notes


I've really been enjoying the charms of all things Duelund, and I am hard at work writing Part 2 of the Duelund-WRSE Project  for Positive Feedback Online right now. The focus of Part 2 of the Duelund-WRSE Project are the 6.8uF Silver Duelund CAST Capacitors for the C1 position of the crossover (shown above), and... Read More »


Sunday Afternoon at Jeff's Place


I had my friends Leo, George, Ron, Stephaen (6Moons), my girlfriend Rosalie, and Santos, over for a listening session last Sunday afternoon. First we listened to some interesting grounding loops from Mark Coles (Sablon Audio) that can be used on speaker cables, interconnects, and the Duelund-WRSE connections. Mark says the grounding loops are basically short loops of... Read More »


Duelund CAST Silver Autotransformers for Tannoy Prestige Loudspeakers


In my last post I described the new Duelund CAST Copper & Silver Autotransformers designed by Frederik Carøe to replace the stock Tannoy autotransformer. The same model of Tannoy autotransformer is used in all Tannoy loudspeaker crossovers where an autotransformer is used, and like all of the parts choices in the stock Tannoy crossovers, they were chosen... Read More »


More About the Duelund CAST Autotransformers for Tannoys


The new Duelund CAST Autotransformers that Frederik Carøe developed are truly a watershed product for Tannoy aficionados around the world.  As you have no doubt read here in these pages, we aforementioned Tannoy aficionados have been eagerly awaiting the appearance of a high-quality autotransformer solution to replace the stock Tannoy autotransformer with, particularly those of us who have... Read More »


Today's Fresh Catch: Duelund CAST Copper & Silver Autotransformers - Updated


Today's Fresh Catch are the Duelund CAST Copper & Silver Autotransformers for the Duelund-WRSE Project that all of you have been waiting for more information about. I am very happy to report that today a pair each of Duelund CAST copper and silver autotransformers have arrived from Frederik Carøe in Denmark - thank you Frederik! I... Read More »


David King Checking In From England: Get Better Sound from Westminster Royals


I got a nice email from David King, telling me about some of his experiments in setting up his Westminster Royal loudspeakers (below), which I thought would be valuable reading to all of you here at Jeff's Place:   "Since I was last in touch I have been doing a whole series of experiments based... Read More »


The Duelund CAST Silver Autotransformer!


Those of you who have been reading about the Duelund-WRSE external crossover project know that pretty much everyone has wanted to use silver wound autotransformers in their Tannoy crossovers to provide the treble energy control (see below), including Paul Mills at Tannoy, Jignesh, Pambos, Frank, and of course, me. The autotransformer in the Tannoy crossover allows the... Read More »


Breaking News: Duelund Silver CAST Transformers for Tannoys Are Almost Ready!


I have a breaking news report to share with you: I just got an email from Frederik Carøe in Denmark and he has some very special and exciting news for Tannoy enthusiasts! Frederik is building the first set of Duelund CAST Silver Transformers for Tannoy crossovers right now and they are almost ready! (That's the Duelund Silver CAST 6.8uF capacitors above... Read More »


Duelund Silver CAST Caps, NOS RCA Black Plate 6L6GCs, New Vinyl, Vintage Vinyl, and Other Stuff


Last Sunday George, Leo, Ron, and myself had a blast listening to music, drinking some fine wines, and munching down on pizza. I mentioned how impressed we were with Ron's pristine vintage H.H. Scott stereomaster integrated vacuum tube amplifier on the big Tannoy Westminster Royal SEs ... ...  but something I hadn't mentioned, and wanted to... Read More »


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