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4 X EL34 PHILIPS-MINIWATT METAL BASE. NOS. CRYOGENICAL
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4 X EL34 PHILIPS-MINIWATT METAL BASE. NOS. CRYOGENICAL
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Shipping & Handling for this item: Spain Europe Rest of World,except USA USD$ 8 USD$ 18 USD$ 25 For U.S buyers, only send with DHL express service. Cost: 0-1lbs: 30US$, 1- 2lbs: 59US$. Please, US buyers, If you win Auction send me message for total amount. Remember: 1 euro = 1,38 US$ All the shipments will be made by registered shipment (air mail + tracking number).The tubes will be carefully packed in a, for to guarantee a secure shipment. I can combine multiple shipments, for you pay less money. For other shipping questions , please, consult me. Many thanks!! Payment: I prefer Paypal $ For Spain and Europe, I also accept bank transfer. DESCRIPTION: FOR HIFI OR RADIO EQUIPMENT SALE: SALE A VERY GOOD OPPORTUNITY. 4 X EL34 PHILIPS-MINIWATT METAL BASE. NOS TUBES. CRYOGENICAL PROCCESS ( SEE EXPLAIN ). MATCHED QUAD . 5º QUADTESTED IN AMPLITREX AT1000 TUBE 1: 76% EM, 84%GM, 1.0 GAS. CODE: SY0 55L TUBE 2: 71% EM, 83%GM, 0.8 GAS. CODE: SYA 5Y TUBE 3: 84% EM, 89%GM, 1.2 GAS. CODE: SY0 56A TUBE 4: 77% EM, 83%GM, 1.2 GAS. CODE: SY0 55L MATCHED QUAD . NOTE: IN THIS OLD TUBES, IS NORMAL A LITTLE REDUCTION IN EMISSION TEST NOS TUBES. THIS TUBES ARE CRYOTREATED WITH MULTISTAGE PROCESS, In hifi applications you obtain : - decrease in tensions were manufactured.- Decrease in tensions in the internal welds - increases the longevity of the tube, by decreasing the operating temperature ( 10%-15% ) Manufacturing imperfections at the microscopic level, improve involving: - better sound quality - better sound fidelity- more immersive atmosphere, a three dimensional feeling of the music, - more musical body, in short, better sound quality. Measurable aspects, the emission increases and the transconductance, decreases gas and microphones. ( tested in my amplitrex at1000, wiht less than 1% error ) Travel through the website and check what I am commenting MULTISTAGE CRYOGENIC PROCESS. ABSTRACTThe multistage cryogenic process is an evolution from the conventional cryogenic treatments of materials. It needs shorter process time achieving the same or even better results.This paper introduces some basic fundamentals of these treatments, their effects and applications, the equipment, etc. Some examples with different materials and from different industrial sectors are also presented as well as some brief comments about R&D and future trends of the technology.INTRODUCTIONPeople usually relates heat treatments with high temperatures, but thermal treatments can also involve cooling. Although it has been traditionally considered that deep cold temperatures have no permanent effect on the materials, it is not true at all.Heat treatments were already known and used centuries ago but the access to really low temperatures was only possible in relatively recent days. Although the first experiences took place at the beginning of last century, it is not possible to properly speak about industrial cryogenic treatments of materials until the 70’s when the liquefied gases became more affordable and the treating equipment had more accurate process control systems.During the 80’s and 90’s the use of this technology increased and some treating facilities were opened, mainly in the US. Nowadays it is possible to find cryogenic processing companies in many countries all over the world.Although still hardly known and used in Europe, the cryogenic treatment of materials is a technology that is slowly getting acceptance in industry. It basically consists in submitting the materials to deep low temperatures for increasing some of their performance characteristics like wear resistance or fatigue life.1. THE PROCESSCryogenic treatments basically consist in submitting the materials to deep cryogenic temperatures (bel...
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