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Hybrid Darkroom

B&W film  processing kit 

Changing bag, Paterson tanks, chemicals, timer, thermometer, graduated cylinders and running water from a kitchen or bathroom sink. If you decide to develop your own B&W film, this is a good place to start.

Leica M6 + Canon  Serenar 50/1.8
Diafine is an ideal developer for the tropics since it isn't very critical of temperature but also have Rodinal at hand when I want the look. I've also used Kodak D76 and Ilford DDX.

Negatives hang to dry before scanning...

This Canoscan 8400F flatbed scanner has given reliable service for more than 5 years. I use the Scangear software with all enhancement functions turned off...

...and do minimal post processing in Photoshop 7 - limited to procedures I learned in a traditional darkroom.

This was the darkroom I set up in my apartment in the USA.

Negatives and prints are inserted into Print File sleeves and stashed in binders.

Canon P + W-Nikkor 35/2.5
Kodak TX400 in Rodinal 1+50

Years ago a photographer friend advised that I will learn a lot more about photography if I process my negatives and print them. He was right, I realized I was not born with a gifted eye...he he he! Nonetheless I still enjoy the whole process ;)


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Altec 2-way horn system redux

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The project was conceived in mid 1998 because I needed a monitor system that was more efficient than the OB/755 so I could listen to SE amps with 2 watts output and below.
I commissioned my cabinet maker neighbor to build 614 bass reflex cabinets and loaded them with Altec 419A 12" drivers + 811 horns (early version/heavy sand cast) and 804A compression drivers gathered from hamfests and radio shows. Crossover was a textbook 1st order/6dB/octave hinged at 900 hz and the horn padded down to match the sensitivity of the low frequency driver.

Eventually I acquired proper 12" woofers - Altec 414As, which lack the upper midrange nasties of the 419As. The 414As have great midrange quality even if they lack the bass end of their larger 416/515 brethren.

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Stereo > Mono Line Level Mixer

Mixing line level stereophonic signals into full dimensional monophonic ;)
Here's a DIY project for mono aficionados that's so basic, I should have uploaded it many years ago. But other things got in the way.

Just like an MC step-up, these are entirely passive devices. 

The simplest way to convert stereo to mono is to connect left and right channels via a Y connector. But there's a more elegant way than just shorting two channels.

Resistors can blend two signals into one better by...

...using Allen-Bradley carbon composition for warmer sound ;)
We can end the mixing quest here but...

...the most elegant way of mixing two channels as was done in the studios by audio pros of yesteryears was through transformers.

This single UTC A-20 transformer was in a box lot of tubes and parts I picked up at a radio show. It's a high quality transformer designed for mic, mixer or line matching applications. Instead of trying to find a mate for MC step-up duty, I repurposed it for a g…