News and updates
- the phono preamp project is close to the finish. The prototypes have had their first evaluation and listening sessions. So far everyone who experienced the phono rated it very high. Almost all comments sound similar .... very high resolution and precision ... very exact staging ... remarkably low noise and extremely low hum. But the most noticeable comment is speed speed and speed.
Soon personal evaluation reports and magazine reviews will follow and I´m quite shure they will be very very positive. My client also seems to be very happy with the outcome. I just hope that it becomes the commercial success he hopes for.
- corrected website for some minor issues like typos, text passages and enlarging-on-click for some pics and graphics.
- added chapter ´CFP buffer/preamplifier´ in Menue ´ideas and circuits/preamplifier´
- started work for my new employer, a german electronic parts manufacturer.
- a almost 2 year running project is finally coming to an end. It started in that a aquaintance I had met on the AAA fair asked me to take a look at his project.
So I ended developing a new PCB layout and when the device still not reached the specs, I was asked to develop a complete new design.
Well, the first prototype has passed a couple of shootouts against renowned and considerably higher priced competitors and performs exceptionally well so far.
Production run should start in a few weeks and I´ll see if I can disclose more later.
- changed the section ´hybrid buffers´
- started ´really good 100W amplifier´ in section ´ideas and circuits´.
- Updated section ´ MyTechnics´ with subsections ´Tonearm´ and ´Pickup´
- Updated section ´All-JFET SE-Phono´
- Due to the required update to https I lost my counter at over 24000 hits and had to relaunch a new one :-(
- Updated section ideas/misc with CMOS-logic circuits
- my work for purist ends at the end of 2016 and I´m looking forward to meet new challenges.
British crazyness dwarfed!
Americans have had their presidential elections and the world rubs her eyes in astonishment. How can a proven incorrigible liar, a rude egocentric bully and the worst-wig-on-earth become the new leader of the mightiest military power?
It only requires a keen eye and low intellect to realize that Donald Trump is capable of a lot, but won´t be the one who ´makes America great again´ ... whatever that means anyway.
This is a prime example that one should not make important decisions when beeing in a state of angryness or emotionally off-centeredness.
Btw. did You know that the phrase ´make america great again´ ....
- has been used by Donald as early as in the 80´s?
- that it is copyrighted?
... and guess by whom?
- Updated the Buffer menue with the ´Hybrid-Compound-Buffer´
- Beginning of ´Verschiedenes/Miscellaneous´ a chapter about helper- and periphery-circuits
Juli, 9th. 2016
June, 24th. 2016
Brexit - or "Little Britain at it´s worst"
If the EU granted for one of the longest pieceful periods in Europe alone, it´d be worth every effort and be worth to remain a part of it. Unfortunately the British have chosen to not be a part of it in future.
They have at the same given up the chance to evolve and improve the EU from within.
Let´s just hope that matters come out well
These Britons are crazy!
Beginning new built of phono Calvin-RP1 in a casing that I found at Fischer Elektronik, the TONDO-series TON 111 30 200. I´ll take it in black anodized with red stripes.
End of May 2016
Beginning to write the chapter "ideas and circuits -- Verstärker / amplifiers"
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Received the slotted glass tubes from the Glasfachschule (glas college).
They managed to cut the slots quite clean with only minor break-offs. I´m happy as all glass specialists before had turned me down, claiming that alrady hardened glass could not be cut without major destruction.
I think the cutting surface can be smoothed with a diamond orcorundum tool.
Mid May 2016
Whilst my stay in Regen around the HighEnd 2016 I left the two Schott glass tubes -intended for a Cantus tonearm clone project- to the Glasfachschule ´glass college´ in nearby Zwiesel to try to cut slots into the tubes.
We showed at the Munic HighEnd 2016 show.
Had a small both in Hall4,R14, showing our Music Server.
Also we showed the complete setup at an off-side location only 100m distanced from the MOC.
See a short report with pics on monoandstereo
The setup consisted of:
- purist Statement-7 Flagship Music Server, configured with the Ultimate DAC, SSDs and its own WLAN (standalone functionality without the requirement to use a external router for WLAN)
- purist Pre, the passive preamp, configured with 6 linelevel inputs
- purist LMS, the two way active xover for the ESLs and bass towers
- four KR Audio Kronzilla mono SE triode amplifiers with ~70-100W of output power
- purist ESL, consisting of the new panel with 1.2m² membrane area per side and the associated bass tower with eight 6.5" longthrow drivers
- purist Sub, the globe-shaped subwoofer with two longstroke 15" drivers, driven from a separate DSP-filtered 2x1600W class-D amplifier. The casing is cast from concrete and is as acoustically dead as a Dodo
- Neyton Audio RCA and flat Speaker cables. The speaker cables can be ordered configured in inductive or capacitive fashion. The capacitive version is chosen for the ESLs, while the inductive one suits the dynamic bass drivers better.
- The show room was a bare hall with concrete and glass walls and glass roof of ~15m length, ~8m width and ~6m height. The only damping and ´room treatment´ was the red carpet. The room acoustics rather equalled that of a swimming hall. Still though due to the special distribution character the system performed extremely well even at large listening distances. Speakers with a broad distribution would have suffered their Waterloo under such circumstances.
Audience critics were very positive, yes even outrageously positive. Quite regularly the terms ´best of show´ and ´best, I ever heard´ fell. Listeners were astonished about the huge dynamic range and stupendous ´speed´ and attack this compact -at least for super box standards- speaker system delivered, fed from rather medium wattage amps. The performance was certainly exciting and great fun for every listener.
- Changed the coating and improved the stretching of the membrane
- This resulted in an considerable increase in efficiency and maximum SPL. Actually I´m still uncertain as to why this effect occured so strong.
- Had to increase the volume level of the bass towers by nearly 6dB to match the panel´s SPL again. Sounds hardly believable, but the bass towers are the SPL limiting elements, even though they are highpass filtered at 55Hz.
- Large scale dynamics are now even more like from a big horn system without loosing on fine detail resolution
Oct 31st - Nov 1st, 2015
Analog-Form in Krefeld.
I could show two turntable projects and one Calvin/RP1-PCB at the room of a befriended dealer.
The MyTechnics TT as fully completed and functioning device and the TheKiller TT and the Calvin-PCB as partly finished non-functional devices.