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Showing posts from October, 2017

Grace G707 + TD150 = road most travelled

By the time I acquired a used Grace G707 tonearm ca. '83, it was already an up and comingclassic. Classic being a euphemism for affordable since TAS and Stereophile were already waxing poetic about heavier MC cartridges from Kiseki, Koetsu, Accuphase AC-2, etc, which required more massive tonearms. 

I had to do irreversible hacking to my thrift store-found ARXA turntable to mount the G707. All that effort paid off since the improvement this tonearm brought to my audio system was staggering - more transparency and definition throughout the audio bandwidth. The listening experience became a lot more enjoyable! Sadly, that G707 got lost in a maze of senseless upgrades I went through for the next ten years. I held a torch for this tonearm until I found another nice sample for this time travel episode.

70s MC cartridges  Back in the day, I could only afford the Audio Technica low output moving coil AT31E + Sony HAT10 MC transformers. Those two items are gone, so
 accompanying us on t…

JE Labs Simple 46

I've been hoarding type 46 power tubes gathered from radio shows I attended with my buddy Chong in the late 90s. Building an SE 46 amp was in my to do list when I packed up for Manila in '08. But things got in the way. Finally, after a round trip across the Pacific, the amp has come into fruition.

Given its designation, one would think that it is just a 45 with dual grids. However, aside from the UX-5 tube socket requirement, the 46 is notquite a 45. It only puts out 1250 mWatts, 750 mWs less than the 45's 2000 mWs. Maximum plate dissipation with grid 2 tied to the plate is 5.5W compared to 10W for the 45. Although it will perform very well loaded with a 5k primary Z output transformer, the textbook recommended load is closer to 7k, due to its higher plate resistance of 2380 ohms vs. 1700 ohms for the 45.

It's been over 20 years since the Simple 45/2A3 was uploaded to the now defunct DIY section of the old Angela Instruments website. So I wanted to reprise that old-sc…

Cinestill Cs-41 Color Film Developing Kit

Intrigued by an e-newsletter from Freestyle Photographic Supplies, I ordered this color film processing kit, which promised to be just as straightforward as developing B&W film.

Mixing the Chemicals
Developer = 20 oz of distilled water heated to 120° F + Parts A, B & C to make 1 quart

Blix (Bleach/Fixer) = 18 oz of distilled water heated to 125° F + Parts A, B & C to make 1 quart

As suggested by the Cs41 website, I got a $25 foot spa from Walmart as a tempering bath for the chemicals and the developing tank.

Temperature is most critical with the developer. Since the foot spa is just a tempering bath and does not heat up water, I filled it up with hot water from the tap, which was between 105-110°F.

Meanwhile, I filled up a pot with hot water from the tap and heated up the developer in this water bath on the stove to my chosen 102° F developing temperature.
 I did a pre-wash to stabilize developing tank temperature at 102°F. Developing

The developer is…