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Old 6th February 2009, 09:50 PM   #2361
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S5 K-16LS kit project that I just finished. First time with tubes so I figured I'd start with a kit so I can learn without killing myself in the process.

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From scratch from 1mm aluminium sheet, I custom made the knob on my school's lathe and made some covers for the power transformer to make it looks more snappy.

Matching input/output selection box in the works.
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Old 6th February 2009, 10:04 PM   #2362
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Fabb'ing cabinet hardware on Project 1 is above and beyond the call, nice work!
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Old 7th February 2009, 04:02 AM   #2363
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Default 1st build

This is my first scratch build. 1626 Darling with a LCLCLC PS and 5V4G rectifier. Had to use a bucking trafo to bring the voltages down as my mains has been running 125-126V.

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Old 8th February 2009, 04:27 PM   #2364
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Just finish my dynaco st-35 clone with 2 el-84s in PP per channel. The poor power transformer gives only 300V for the B+ with bias around 30mA per tube. Don't know the output power, can any one offer some hints. The OPT is Hammond 1620 with 6600 ohm per primary. Some crackling noise on one channel, may be the socket or the tube problem.
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Old 8th February 2009, 04:27 PM   #2365
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The internal view of my ST-35 clone, what a mess!
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Old 9th February 2009, 03:10 PM   #2366
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BULGARIA...
My amp. أس-50 / red pill....
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Old 9th February 2009, 03:32 PM   #2367
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Some pics of a small amp to be. It is a 6AQ5-SE on a 100 x 110mm alu-plate. The final measurements till be slightly bigger as I really cannot fit the three PSU caps in the space.

Transformers are 5K SE-trannies from Analog-Metric and power tranny is a R-core from vt4c.com.

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Old 9th February 2009, 08:10 PM   #2368
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Soundbrigade Q&A:

When you install the tranny, how do you parallel the primaries for 115 VAC? Red to Green and Yellow to Orange ?? (I get it about 230 VAC ... Green spliced to Yellow, right?) (I had some difficulties with a German transformer a while back, the colors were in German on the label and I had to Babelfish the US gringo wire colors to get a translation ... and still messed up. )
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Old 9th February 2009, 08:17 PM   #2369
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Answer:
I think, hope, pray and guess that the tranny is wired as indicated on the sticker. In this case for 230V I connect RED and ORG to line and connect YEL and GRN together.
Had I wired it for 115V, I had wired ORG and YEL together and GRN and RED together.
The latter may be the case as we will go to the States in June and I may (or may not) have reason to bring the amp and show it to some people as an example of miniature Swedish artmanship ...
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Old 9th February 2009, 08:26 PM   #2370
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Yes!! ... That's what I figured as well = Org to Yel & GRN to Red, with the GRN/Red plugging into the wall (the "Black to Brass" = hot side) on US power ...

" an example of miniature Swedish artmanship ..." = And that it is too! Thanks!
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