2010年12月將使用全新打造的新機殼

New Chassis - december 2010





After a year of using off the shelve ready chassis, time came for producing my own. I found a nice steel pressing shop nearby which agreed to help me. After 3 months of planning and testing - it is ready.
The chassis consists of 10 elements which get assembled and put together by means of 4 mm nuts. Everything is cleverly planned to make electronic assembly easy, fast, safe and optimized.
Every component has its place. The placement follows three criteria: short wires where it matters, easy testing and service, and separation of sections.





Above you can see the DAC from birds POV. There are 4 main sections, separated from each other by steel partitioning:
Transformer section, DC power supply section, tube section and digital board section.
There is some free space left for the future needs: USB module, LAN module, XLR balanced output, etc.
I can have up to 4 transformers and 6 chokes and 6 tubes in this ready designed chassis.




This picture shows the detail of tube mounting. It is a revolutionary design - my own invention that the tubes are mounted up side down. This way I achieve 3 main goals:
1. The socket is visible and accessible for easy soldering and measuring
2. The tubes are accessible from the bottom, without opening the box. The box is seal protected - during warranty it is not allowed to open it.
3. The tubes are well ventilated and magnetically shielded (remember - aluminum dos not shield magnetically but steel DOES. )



As you can see above I have provision for 4 output tubes, allowing me for example to build fully balanced SRPP design with one tube per phase.
The green cans are monstrous soviet polypropylene/alu foil output caps.
Tube sockets are gold plated.
The signal goies to and from the tube by a white wire which is silver in teflon - made in USA.
The resistors which make lampizator are Roedenstein metal film.









Above: view from under the DAC - the tubes have their "cave" where they can be admired and/or unplugged.





Above - againb - the kangaroo bag style of tube mounting.






On the picture from the left: the standard population of the left hand side real plate: Input AES/EBU with female XLR, blue input selector switch, belden silver plated coax 75 ohm cable in teflon, S/PDIF RCA socket with Rhodium socket, all connections are made with single strand silver wire.





On the bottom of the above picture there is the rectification tube - a dual diode 6C5S (indirectly heated diode) It gives 2 x 70 mA current, if gives soft switching, zero noise and a delayed slow start (2 minutes)











The unpopulated test PCB is there for the picture only.














this obviously wrong xlr socket is there for the photo only ...


The whole rectangle module can be exchanged depending on the holes needed. Above is the standard configuration.












Above: the IEC standard mains socket is a typical one, wit integrated fuse , one spare fuse, and it is made in Switzerland by Shurter.






On the left above: the mains transformer dedicated to the digital board. It is an EI type with 9 V and 1 A.







The gorgeous Lampizator mains transformer is wrapped in Alpha Core Goertz copper tape for the looks, shielding and extra silence.




Every consumer of power gets dedicated secondary AC winding . Nothing is fed from common supply.




Above is the more capable alternative to 6C5S - this is 5C4S (directly heated dual diode)





The first cap after rectifier - where the full saw tooth signal appears - is best paper in oil. This one is 2 uF minitary Polish Telpod with 200 % overrated safety voltage. It contributes to soft but fast delivery of DC to anodes.





The second element after the PIO cap is a choke - here the 10H/30 mA choke. After this part the DC is alteady perfectly flat and noise free. But the power will go through a full CLC filter again to become insanely perfect , flat and noise freee.




The three silver cans are monstrous 1500 uF/ 250 VDC caps from Nippon Chemical - Made in USA. That gives a total of 4500 uF at 220 V DC. More than most amplifiers have. It is almost 100 Joules !!!



Above - the second filter - 1500uF / 40 H / 1500uF


The legs are raw and ugly but so good - kauchuk door-stops. They support the heavy chassis while reducing vibrations due to their huge mass of rubber.










Above - the face plate has a wet mark around the screw - a leftover of some Pronto spray.






I think that gentlemen prefer blondes....




















Summary: the new single Lampizator box is a great one, better than most competitors can offer. It is plain simple and elegant and the sophisticated internal partitions serve the function and purpose. The revolutionary upside down tubes are easy to remove from underneath without opening the box. There is a choice of silver alu or matt black face plate (7 mm grade 11 Alu) and 4 colors of the eye: green, red, violet/blue and white. The top cover is charcoal black and rear is shiny Zinc.
The box and Lampizator are any mains voltage ready. There is NO MORE TWO BOX SOLUTION for Level 3 - all fits in one box.