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Details about  2 X E188CC MULLARD ( RTC BRAND ). DIMPLE DISC GETTER. GOLD MATCHED. CRYOTREATED

2 X E188CC MULLARD ( RTC BRAND ). DIMPLE DISC GETTER. GOLD MATCHED. CRYOTREATED See original listing
2-X-E188CC-MULLARD-RTC-BRAND-DIMPLE-DISC-GETTER-GOLD-MATCHED-CRYOTREATED
Item Ended
Item condition:
--not specified
Ended:
14 Feb, 2013 22:43:04 GMT
Winning bid:
US $121.87
Approximately £71.51(including postage)
15 bids ]
Postage:
US $15.00 (approx. £8.80) USPS Priority Mail International Small Flat Rate Box | See details
Item location:
Málaga, Spain

Description

eBay item number:
310587940337
Seller assumes all responsibility for this listing.

Item specifics

radio type & accessories:

Parts & Tubes

Product Type:

Telephone

CRYOGENIC HIFI TUBES lamberto1111

Visit my eBay Shop  

HELLO¡¡¡.   DO YOU REMEMBER ME?.   This is a specialized store to sale hifi tubes in auction and  buy it now options.   I have 2 store more in ebay:

lamberto1111:  More specialized in sale hifi tubes in auction. See link and feed-back:   http://stores.ebay.com/cryogenichifitubeslamberto1111

radio-antigua: More specialized in sale radio-tubes.  See link and feed-back . http://myworld.ebay.com/radio-antigua/

 Buy it now with confidence

SHIPPING COST

SPAIN: $8 DHL EXPRESS
EUROPE:  Airmail certified with signature $13.
USA/ASIA/SOUTH-AMERICA : Airmail certified with signature. $15


TUBES ARE FROM SPAIN. SHIPPING AROUND THE WORLD

 


DESCRIPTION:


FOR HIFI OR RADIO  EQUIPMENT, 


SALE A VERY GOOD OPPORTUNITY.


2 X E188CC MULLARD ( RTC BRAND ). 
DIMPLE DISC GETTER. GOLD MATCHED. CRYOTREATED
 R-CODES: MULLARD MITCHAM FACTORY, MATCHED CODES: VR1  R2J1
LOW MICROPHONIC
10.000 HOURS WORKING CONDITION. LONG LIFE


TESTED IN AMPLITREX AT1000 ( www.amplitrex.com )


TUBE 1:   136/150% EM EMISSION

.   118/125%GM ( TRANSCONDUCTANCE )  0.6/0.mA/V GAS.  

TUBE 2:   132/156% EM EMISSION.   110/124%  GM  ( TRANSCONDUCTANCE ) 0.6/0.6mA/V GAS.  





NOTE VERY IMPORTANT:


The pics in this auction are provided to complement the description for more information



YOU CAN´T OBTAIN OTHERS SIMILAR TUBES WITH THIS HIGH TECNOLOGY PROCESS. SEE MORE.........



THIS TUBES ARE CRYOGENICALLY TREATED, 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.


ABSTRACT

The 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.


INTRODUCTION


People 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 PROCESS

Cryogenic treatments basically consist in submitting the materials to deep cryogenic temperatures (below 120K) following predetermined time-temperature curves in order to enhance some of their physical or structural properties.

According to the previous definition, it must be noticed that the subzero processes (at about -80 ºC) that are used in many traditional heat treating facilities to reduce the austenite content in some tool steels cannot be considered cryogenic treatments.

1.1 Conventional cryogenic treatments

There is no a standard process for cryogenic treatments but most of them are quite similar. In conventional cryogenic treatments the materials are slowly cooled down to a temperature

around -180 ºC and maintained for a period of time that lasts from eight hours to two or even more days. After the soak, the materials are slowly heated up to ambient temperature. Sometimes the treatment is completed with a soft tempering. The entire process typically needs two to three days to be completed.

There is a conventional process sub-category called “wet process“ where the soak is made by submersion in liquid nitrogen. Anyway, the previously described “dry process“ (no liquid nitrogen in the chamber) is more widely used.

The cryogenic treatments are performed in chambers designed for this purpose. The material is usually cooled using liquid nitrogen that is introduced in the processor through solenoid valves controlled by computer. Most of the modern chambers have heaters that also allow to control the temperature during the heating phases of the process.

1.2 Multistage cryogenic process

The multistage cryogenic treatment is a more advanced process that has been developed as an evolution from the conventional ones. In this treatment the isothermal soak at cryogenic temperature is substituted by several cryogenic cooling/heating phases. This process is more effective but its main advantage is that it is much faster (an average of fifteen hours for the whole process) than the conventional ones.

The cryogenic chambers that are used to apply a multistage cryogenic treatment are specially designed to perform this type of process.


NOTE VERY IMPORTANT:


The pics in this auction are provided to complement the description for more information




ABOUT US.


Advantages that we offer here at radio-antigua :  SEE MY STORE IN EBAY:  Http://stores.ebay.com/radio-antigua   and lamberto1111 ( auction store ) stores:

·  We ship worldwide. Is possible to make in a customer declaration exact price of auction or more appropriate declarated price.

·  We buy in bulk and pass the savings on to you.

·  Feed back:  100%,  3020 POSITIVE FEED BACK  ,  and my other store: radio-antigua: 2720 POSITIVE FEED BACK 100%

·  We leverage a network of tube buyers from across the world.

·  We have over 130,000 Radio and Amp tubes in our current inventory.More of 2500 type of tubes. And more than 10.000 hifi tubes. Ask if you need others types of tubes

·  We can offer tube matching and balanced dual section tubes. Ask for this extra service. This tubes are tested with my Amplitrex AT-1000 tube tester ( most advanced tester ).

An Excellent Customer Rating that we intend to keep by providing you with:

·  Excellent Communications

·  Timely shipping after receiving payment (1-2 days is our goal)

·  Transparent and honest tube testing results, not inflated numbers.

·  Our 7-Day 100% Satisfaction Guarantee (see below)



OUR WARRANTY


Our simple warranty:
We believe each tube should have an appropriate warranty, regardless if it is used, NOS or NIB, we do not sell as-is. If you are not delighted with your purchase, let us know within 7 days and we will authorize the return of the tube. We may be able to provide another tube from our large inventory - your choice. To improve our quality, we would like to understand the reason for the return.

Returns must be the same item and include the original box in the same condition (if applicable). The item must be packed with the same care and use the original packaging materials. Purchaser must pay return shipping fees. When we receive the return, we will refund your purchase price (excluding original shipping fees) within 72 hours.


We want you to be happy with your purchase, and will work with you if you have any concerns or problems. Please contact us to work out a mutually beneficial solution before writing negative feedback.

TUBE TESTING

We pride ourselves on being honest and transparent in our ads. The tubes we sell have been tested.

We pride ourselves on being honest and transparent in our ads. The tubes we sell have been tested. With our tube tester funke w19s. Funke w20 and amplitrex at1000 ( www.amplitrex.com ). We work with 3 units in constant use, and the variation of measurements between them is less than 5%. The analog measurements were tested with a calibrated digital milliammeter Simpson F35 and F45 . The error is below 1% ( in amplitrex at1000 )

 

                                      

SHIPPING

Affordable, carefully packaged and worlwide


We will combine shipping for multiple items purchased in my store and will send you a quote. Please, when you finish to buy , send me total request for total amount

Usually ship on the day of, or day after payment is received.

 

PAYMENT


Please remit payment within 7 days of the auction end. We reserve the right to re-list the item if the payment is not received within 7 days

 

THANKS


Thank you for checking out this item. Please visit our eBay store for buy at fixed price :  radio-antigua:  

Http://stores.ebay.com/radio-antigua

  ,  where you will find many more great deals on Tested Vintage Vacuum Tubes.

We also have an Internet store that is currently being built. Our Web store: IS NOW, AVAILABLE IN THE WEB.


Esta venta está sujeta a los terminos anteriormente designados

Garantía y posibilidad de devolucion atendiendo a los datos aportados en los términos de la venta


On Dec-23-12 at 11:34:04 PST, seller added the following information:

Hello

I mistake in value test of amplitrex at1000 test
Exact result test of these tubes are:

TESTED IN AMPLITREX AT1000 ( www.amplitrex.com )


TUBE 1:   116/143% EM EMISSION

.    111/121%GM ( TRANSCONDUCTANCE )     0.4/0.5mA/V GAS.

TUBE 2:   124/150% EM EMISSION

.    113/121

%GM ( TRANSCONDUCTANCE )  0.4/0.4mA/V GAS.  


Sorry for this inconvenience

Questions and answers about this item

No questions or answers have been posted about this item.




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