Saturday, June 22, 2024
Lycan3R WP12024 Horn
Saturday, June 8, 2024
Two RCA derived octal phono preamps
Keen-eyed readers and visitors to my YouTube channel may have noticed the two octal phono preamps I've been using in my recent uploads. I built them for the following reasons:
- Although the Loctal EAR 834P had no problems driving the Intact Audio nickel autoformers, the 5k Ohm output Z of the Shure M65 phono preamp sounded very anemic.
- In the spirit of not leaving stones unturned and my curiosity for other sonic flavors notwithstanding, I looked back to passive RIAA EQ phono circuits I've been wanting to build, which have low enough output impedance to drive an Autoformer Volume Control.
Wednesday, May 22, 2024
Shielded Finemet FM-MCT1 MC Step Up Transformers
Wednesday, May 8, 2024
Silbatone Box Adventures
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from Western Electric Oscillator July 1947 |
Whether it's an open baffle as conceived by G.A. Briggs or an enclosed box like the Western Electric utility boxes above, I've always been an advocate for a wide baffle design. The wide frontal area serves as an acoustic reflector that helps propagate sound toward the listener instead of escaping to the sides and back. Somehow the wide baffle, whether open or closed, always makes reproduced music sound more alive to my ears!
A notable exception is the narrow front baffle Silbatone box designed by Dr. Stefano Bae for the Western Electric/Altec 755A. Since I uploaded the cabinet project under the auspices of Joe Roberts, it has garnered a following amongst DIYers who've reported successful results mounting other 8' drivers like the Altec 755C, 755E and the Lafayette SK98/Pioneer PIM8L.
I finally got a chance to mount and listen to my 755Cs and PIM8Ls + other 8" wide band drivers. Hopefully, this article will encourage readers to DIY this mini-monitor sized box because it really offers a lot of musical pleasure per cubic inch!
To recap, let's start with the...
Monday, April 22, 2024
SETUP 2024
Single Ended Triode Users of the Philippines 2024
At the dawn of the 21st century, I uploaded hifi systems owned by audio buddies who had been inspired by the Sound Practices ethos. These were the guys who originally coined SETUP. After a couple of decades, the number of Filipinos who indulge in this hobby has increased exponentially.
Here's what I saw and heard during my recent visit.😊
Monday, April 8, 2024
Friday, March 22, 2024
Japanese Idler-Driven Turntable Part 6: Realistic Mark 8
Just like cars, a new turntable model has to be introduced every year or two to keep consumers' interest and convince them that newer is better.😊
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from page 37 of the 1960 Radio Shack Catalog |
The Realistic Mark 8 improved upon the similar looking "motor unit-stye" Mark 7 in Part 4 of this series by adding a 16 rpm speed and supplying a half pound heavier cast aluminum platter.
Friday, March 8, 2024
OJAS 529B Horn
During my visit to the OJAS listening room late last year, Devon asked me to evaluate a pair of horns OJAS developed in collaboration with Lycan R&R. The OJAS 529B is a 500 Hz horn rescaled from the large format Altec 329A for use with 1" format Altec/GPA compression drivers.
Thursday, February 22, 2024
SE171A Amp Remastered
My dad would've turned 97 today. To celebrate his birthday, the video clip above features a recording of his favorite violinist, Nathan Milstein, playing Presto from Bach's Sonata No. 1 in G minor for unaccompanied violin. While he was doing post-graduate studies at The Juilliard School in the mid 50s, he was fortunate to have attended concerts of the great violin virtuosos of that era - Jascha Heifetz, David Oistrakh, Nathan Milstein, etc.
He would later recount that Nathan Milstein's performance of the Glazunov violin concerto was the most unforgettable! Even if he never got a chance to add this violin concerto to his repertoire, he conducted the Manila Chamber Orchestra with me playing the Glazunov violin concerto in 1987. The music of the slide clip above is the middle movement from our performance.
Before I bore everyone reminiscing about my dad and our life as musicians, let's get on with the subject at hand. The amp featured in this upload uses a directly heated triode power tube that was introduced around the time my dad was born.
Thursday, February 8, 2024
Line Transformers for Digital Audio
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Altec 15356 + UTC A20 |
While browsing at Books Kinokuniya in NYC in the 90's, this Noguchi ad from the November 1994 MJ Audio Technology issue inspired me to experiment with line transformers as digital sound enhancers. Since I was living on a post-grad assistantship budget back then, importing this pair from Japan was out of the question.
Monday, January 22, 2024
Minimalist Twin-Armed Thorens TD124
Monday, January 8, 2024
JE Labs Man Cave 2024
Most of the audio components listed below are hyperlinked if you mouse over the text. Those that are not will be linked once the article is uploaded.
I like to taste new sonic flavors that are within the DIY realm😊