Plinth concept for this SP-10: (see also Technics SP-10MkII turntable – Pt 2)
A Line-stage With Output Transformer (WOT) was built back in 1998, a single 5687 tube per channel with output transformer (OPT).
However I failed to get rid of noise (EM pick-up and attenuator switching noise). I lacked the expertise to optimise Grounding and to shield and/or orientate the output transformers (OPTs) properly.
Now, I have been fortunate to acquire a pair of Tango NP-126 Line Output transformers. So, I must re-visit the WOT Line-stage. Continue reading
Using the unipivot bearing from my previous DIY Balsa Wood tonearm, I wanted to make a 12 inch (305mm) long tonearm.
I already had some solid wood, a locally available hardwood from the Pacific region called Kwila (Merbau).
This timber is dense (around 850 kg/cu m) – but importantly, this wood is stiff, it has a solid tone and ‘fast’ response when tested. Continue reading
As Joseph Esmilla says, this was inspired by Bruce Berman’s Homebrew Type 76 Preamplifier described in Sound Practices #13. Continue reading
In 1998 I built this line level preamplifier – the Diego Nardi 5687 ‘WOT’ (With Output Transformer) transformer-coupled linestage, as published in Sound Practices #10. Continue reading