Sunday, January 15, 2023

Leitz 8-Element Summicron 35mm f2

While organizing my Flickr, I noticed that I've uploaded over 700 images taken by the Leitz lens I use the most - the first version of the 35mm f2 Summicron. I've blogged about this lens in the past when it was merely an old user lens, which took very pleasing images.

However, in the recent years, this 8-element lens has caught the attention of aficionados,  skyrocketing its value. In fact a reverse engineered version of this lens is being remanufactured in China in limited quantities.

Ninoy Aquino International Airport, Manila 2011
Kodan Tri X in Diafine

It's not a razor sharp optic and the corners vignette wide open.

Macau 2014
Fuji Acros in Diafine

Hong Kong 2014
Fuji Acros in Diafine.

I like the way it creates an illusion of a three dimensional image with a smooth bokeh.

Austin Healey "Bugeye" Sprite
Kodak Plus X in Diafine
2016

It's sharp enough to capture essential details with good contrast.

Porsche 356 in NYC
Ilford FP4+ in Rodinal
2019

Carnegie Hall 2016
Kodak Plus X in Diafine

NYC 2016
Kodak Plus X in Diafine

High Line NYC 2016
Kodak Plus X in Diafine

SoHo NYC 2016
Kodak Plus X in Diafine

Segerstorm PAC 2016
Kodak Plus X in Diafine

Bunker Hill, WV 2017
Fomapan 100 in Rodinal

Toronto 2017
Kodak Plus X in HC110

Kensington Market, Toronto 2017
Fuji Acros in HC110

NYC 2019
Kodak Portra

Color rendition is on the cool and muted side.

New York 2019
Kodak Portra

Subtle tonal gradations are well preserved by this medium contrast lens.

Princeton U 2021
Kodak Portra

NoMad NYC 2018
Fuji Acros in HC110

The technical limitations of this lens contribute to its overall character and charm.

Water Jug 2014
Fuji Acros in Rodinal

Lincoln Center 2019
The Juilliard School (left) + David Geffen Hall (right)
Ilford FP4+ in Rodinal

JE Labs LP Collection 2022
Sony A7II

I like how this lens tames a digital sensor, just like I utilize vacuum tubes + transformers to turn a number crunching DAC chip into a musical device.

JE Labs HiFi 2022
Sony A7II

I love seeing the tonal quality of my hifi through this lens.πŸ˜‰






Saturday, December 17, 2022

Bonsai X'mas Tree + Amp


Looking back to 2022


To celebrate the holiday season I've prepared a short video. Please note that given the dynamic compression and bandwidth limitations imposed on sound quality by YouTube, I upload videos for the visual aspect rather than their sonic merits.😊


Turntable: Garrard 301
Tonearm: SME 3012 
Phono cartridge: Supex SD900 + conical stylus 
MC step up: Altec 4722 
Bonsai Amp: 720mW per channel SE 171A, coming soon! 
Speakers: Altec 753C

So watch how the 720 milliwatts per channel Bonsai Amp is pushed to soft clipping by Tchaikovsky's "Pas de Deux" from "Nutcracker" driving the Altec 753Cs. πŸ˜‰

Thank you to all my readers and supporters!

πŸŽ„πŸŽ„πŸŽ„Wishing everyone happy holidays and a great new year!πŸŽ„πŸŽ„πŸŽ„







Saturday, December 3, 2022

JEL Loctal Phono Preamp + Tube Shields

 

It's been over five years since I built this loctal preamp. I moved it recently so that it'd be between my two turntables. In this location, I was surprised by higher-than-usual hum and noise levels emanating from the phono section especially when compared to my RCA octal + 76 line stage. 

Given that it had been playing quietly and flawlessly until it was relocated, I was dumbfounded. Then I noticed that when I put my hand close to either 7F7 tube, the hum and noise got even louder.πŸ€” 

Before taking the preamp out of the system for a thorough check up on the test bench, I searched for a couple of tube shields from my parts bin. 

Voila! The unusual hum and noise vanished.πŸ‘






Tuesday, November 1, 2022

November HiFi Show 2022

Back with a vengeance after a two year hiatus!


This is a must-see for every music lover and audio enthusiast based in the Philippines. 
Visit the November Hi-Fi Show Facebook page for more details!

 

Friday, October 21, 2022

VAS Audio: SPU GME II and Supex SD900 IV retip + Stax UA-3NL and Tokyo Sound ST900 repair

 

VAS Audio Workshop

Before lockdown, Ding promised that he'd introduce me to his friend, Steve Leung, of VAS Audio. He's had his Denon DL103S, Ortofon SL15, Supex SD900, and other classic cartridges re-tipped and repaired by Steve. As the pandemic wound down, I finally got to meet Steve and brought the following MC cartridges for new tips, as well as tonearms for repair at his shop.


Ortofon SPU GME MKII


SPU GME MKII - BEFORE

My Ortofon SPU GME MKII has had a hard life ever since it was gifted to me by my SETUP buddies in the 90s. It's been on semi-retirement since I acquired an SPU#1s + a late 60s or 70s(?) SPU-G (below) with a low mileage nude mounted conical stylus.

SPU-G

This SPU-G portrays a wider and airier sonic landscape with perhaps a bit more detail compared to my more recent SPU#1s. It also sounds more organic than the GME MKII. 

SPU GM(E) MKII - AFTER

I attribute the SPU-G's sonic superiority to the better polished nude mounted conical stylus vs. the bonded conical stylus of the SPU#1s. So I asked Steve to fit his finest nude mounted conical stylus on my GME MKII.  

Ortofon SPU GM(E) MKII

Agreeing to my downgrade idea,πŸ˜‰ Steve may have turned the GME MKII into an SPU-G equivalent of the SPU-A wood. All I know is, it can stand up to my cousin's SPU Synergy!😊


Supex SD900 MKIV


BEFORE

The Koetsu Black and Supex SD900 were my dream cartridges back in the 80s. When I finally found an SD900 I could afford, it sported a ruby cantilever + complex stylus profile upgrade.😏 Although traces of the classic Supex tonality were still there, it sounded compressed and swamped by dry analytical detail.😞

AFTER

I asked Steve to work the same magic on my Supex as he did on Ding's, albeit with a twist. We agreed upon an aluminum cantilever just like the original and I requested for another nude mounted spherical stylus.

SD900 MK IVs (s = spherical)

Steve remarkably transformed the Supex! The harmonic richness and dynamics this classic MC cartridge is known for was restored. To my ears, the SD900's edge over my SPUs and DL103s is its ability to focus and retrieve detail without inducing tinnitus. Because of Steve's phenomenal restomod job, I'm no longer yearning for a Koetsu! 😊

Stax UA-3NL



Being an ardent fan and committed user of the Gray 108 viscous damped tonearm and its Japanese clones for monaural hifi applications, I needed to experience a modern iteration of a uni-pivot. This design actually dates back to the late 60s. Scroll down to page 1413 for the review in the Hi-Fi News November 1969 issue. The UA-70 seems to be essentially the same tonearm updated in the 70s with an anti-skate mechanism.



I added the UA-3NL to my collection in early 2018 and paired it with my Thorens TD124 and Sony TTS 2500, respectively. I was going to include this tonearm in my Alfred Bokrand AB309 write-up but one channel dropped out. 

When I finally accessed the internal hair-like strands of enameled wire, I realized that repairing it was beyond my DIY abilities.

Similar to the knife-edge bearing'd SME 3012, the Stax presents a mid to back row concert hall perspective, which is an atmospheric experience without any loss of detail. Although I've used it satisfactorily with the SPU#1S, it brings out the best from cartridges that track in the 1.5 > 2.5 gram range. Just like the SME 3012, the UA-3NL may not appeal to listeners who favor a front row seat/kick drum on your chest presentation.

Thanks to Steve's skill and nimble hands, I'm enjoying my UA-3NL again!


Tokyo Sound ST900


This 9" tonearm from the early 60s has an NHK broadcasting heritage. Comprehensive information about the ST900 is available at audio-heritage.jp. Surprisingly, the spindle to pivot mounting distance wasn't specified. 

So I took out my ancient Cart-Align protractor, did some measurements with my Ortofon SPU#1s cartridge attached and got a pivot to spindle distance of 223mm. I haven't had any problems with cartridges I installed conforming to the SPU's overhang.

Claus Volke and this Japanese audio blog have more to say about this tonearm.

It's equipped with a non-standard 4-pin connector in which the negative phase of the right channel is internally grounded. This limits its use to the stock plastic head shell. In an effort to make it compatible with modern metal head shells, I successfully detached the 4 pin connector at the base of the tonearm pillar. It turns out the ground connection was near the head shell collet, which I couldn't remove. Instead of risking damage, I relied on Steve's expertise.

The design may have been inspired by the Ortofon SMG212 and SKG212 with added Japanese innovations. It is quite massive and can easily balance a 30+ gram SPU. So far the lightest cartridge/head shell combo I used successfully was 19.5 grams. Given its high tolerance bearings, it's an ideal partner to the Denon DL103, Ortofon SPU, and similar low compliance cartridges. Consider this as an excellent alternative to the classic Ortofon AS/RM/SK/SMG 212 series tonearms especially if you prefer the svelte proportions of a compact plinth!


iPhone video clips of the MC cartridges and tonearms in action


"Fire" from The Elements

Supex SD900 MKIVs + Stax UA-3NL 
Turntable: Thorens TD124
MC step up: Altec 15095A
Speakers: Altec 755C in Silbatone cabs


"All Or Nothing At All" 
from 

Ortofon SPU GM(E) MKII + Tokyo Sound ST900
Turntable: Thorens TD124

Steve, the master craftsman, and Ding

Looking forward to Steve's visit to the man cave!🍻












Thursday, October 6, 2022

Kutztown Radio Show September 2022

All pictures taken with a Fuji X-E3 camera + Voigtlander Color-Skopar 35mm f2.5 LTM lens

The early bird...


A pair of Bose 901s with tulip stands!

Nice day to be out of the pavilions.


Acoustic Research AR10𝛑s


Radios are the stars of the show!


But audio is catching up.😊


Radio and hifi catalogs, magazines and other literature


Just like vacuum tubes, phone booths were a common sight in the past.


Lots of vintage tube components!

I can empathize with the person behind these reimagined Dynaco preamps since I used to be a Dynakit hacker in the 80s and 90s.😊


Heath W4, Radio Craftsman FM tuner, Dyna ST70, etc.


Hickok tube tester + a pair of MC40s


Sherwood FM tuners, Heathkit W5, Realistic tube amps, etc.


JBL 4311Bs + Rek O Kut B16 with a Shure M236 tonearm


Altec Santana II - not what I consider a classic.πŸ˜•


I wish DVHRC also has a winter event!


This was how electronics was taught before the computer era.



Classic cameras are regular guests at radio shows and hamfests. However, this is a rare and unusual 35mm rangefinder camera outfit from the 40s - the Kodak Ektra! As the link explains, it was a very sophisticated design for its time but the shutter was very unreliable. Its Contax and Leica contemporaries were much better!