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Post by PinkFloyd on Mar 15, 2014 21:05:13 GMT
I have managed to get hold of some ex military valves (tubes) which are the same spec as the stock Mu Vista (6112) valves that Musical Fidelity fit in the X10-V3. They are absolutely 100% NOS / never used / original cartons / all from the same Military sealed box.
The big difference with these valves is, they were designed to be used in guided missiles......
This is excellent news for X-10V3 owners as "guided missile" duty means they have to be as reliable as possible, they have to be vibration proof, they have to be good for 80,000 feet altitude duty, they have to survive a 450G durability impact test, they have to be good for a prolonged period "10G" fatigue acceleration test and a hell of a lot more.
This translates (in audio speak) to ZERO microphonics, incredible SQ (compared with the 6112) and a much longer lifespan.
I have soldered a pair into my X10-V3 buffer and I nearly fell off my chair when I heard the improvement in sound quality.... "absolutely stunning".... To sum it up in two words.
These are a more rugged / low noise version of the 6112.
Mike.
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Post by PinkFloyd on Mar 16, 2014 21:48:21 GMT
Are there any X-10v3 owners here? My god, day six with these valves on board and I am absolutely salivating over the improvement in SQ (across the spectrum)... the stock JAN Philips 6112 (Mu Vista) were good but these are simply sublime!! I can only describe these as portraying a "Nu Vista" on the soundscape, greater insight, superb clarity, fantastic detail retreival, three dimensionality with height width and depth.... totally awesome!
They are the same high "Mu" types (as the Philips 6112) but ruggedised for guided missile duty.
I know your X-10v3 will never be subjected to an altitude of 80,000 feet or be involved in a "G" situation BUT, the fact that these valves (tubes) have been constructed to stringent military specs ensures that they will perform "flawlessly", whether it be 80,000 feet in the sky guiding a guided missile to it's killing zone or safe at home inside your X-10v3.
These puppies are as hard as nails and bullet proof designed.... I am SO happy to have discovered them after all these years!
Mike.
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Post by PinkFloyd on Mar 18, 2014 20:36:27 GMT
Here are a few of them out for a photoshoot  They are all 1981 date coded, from sealed military cartons, never used (as can be seen by the leads) and the best version "Sylvania" types.... after 1984 production went over to philips and (according to my sources) guided missiles stopped hitting their targets When I say "as can be seen by the leads" I am simply pointing out that these puppies have to be soldered into position, whereas a valve with "pins" simply has to be slotted in...... You can slot a pinned valve in and out like a yoyo for many years and many unscrupulous people sell knackered valves as "NOS"..... no way can you sell a valve that has leads as "NOS" unless it is TRULY NOS The lead length gives the game away. Anyhoo:    |
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Post by PinkFloyd on Mar 18, 2014 21:04:14 GMT
It has taken me many years to find a better sounding valve than the 6112 (for duty in the X10-V3) and a hell of a lot of searching around / cross referencing spec sheets etc.! I am happy to share this information with fellow X10-V3 owners and hope it is useful to them when they decide to try different valves / replace tired valves. This is, in no way, a sales pitch with me trying to offload a few valves.... those of you who know me appreciate that I tend to prefer "stashing" them and not selling them. Having said that, I'm prepared to let a box of these go into the ether (100) so let me know if you'd like a pair As I say, these are a direct, compatible replacement for the 6112 ("Mu Vista" as Musical Fidelity call them) valves that are fitted, as stock, in the V3.... the only difference being that these are a far superior constructed valve and, boy.... your ears will confirm that big time. Some people may have changed the cartons, wiped off the markings, and called them a ridiculous name like "Sky Vista" / "sonic vista" / "MIL Vista" / Impact Vista etc. I prefer to sleep at night and be totally upfront in my dealings so I will declare the actual name of these: Sylvania Guided Missile Tubes 6948. Data sheet here: tubedata.milbert.com/sheets/084/6/6948.pdfHope this is of interest to all you fellow Musical Fidelity X10-V3 owners |
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Post by PinkFloyd on Mar 18, 2014 21:22:27 GMT
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drt
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Post by drt on Mar 18, 2014 22:31:03 GMT
Good evening.
Sounds interesting.
I'm might take a pair of valves to try in my X10-V3 if the price is not too silly
Bruce
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Deleted
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Post by Deleted on Mar 18, 2014 22:55:27 GMT
Mike Are they compatible with the X-CAN V2 , perhaps using a simple veroboard adaptor then hard wiring ? (separate Cathodes , gain 70, and 350mA heater) Alex
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Post by mrpipster on Mar 18, 2014 23:10:47 GMT
I'm interested in a couple of pairs.
I use a KW500 amp that uses a pair in the pre-amp section too.
What's the price for these?
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Post by PinkFloyd on Mar 18, 2014 23:19:05 GMT
Mike Are they compatible with the X-CAN V2 , perhaps using a simple veroboard adaptor then hard wiring ? (separate Cathodes , gain 70, and 350mA heater) Alex
What do you think Alex? YOU are the master of the valve / tube thang Hell man, let me get over the "joy" of discovering these beauties before thinking about bastardising them for other duty  At a quick glance they are possibly good for 12ax7 duty? This is what this thread is all about...... get talking, let's see where these guided missile tubes end up. Mike. |
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Post by PinkFloyd on Mar 18, 2014 23:21:32 GMT
I'm interested in a couple of pairs. I use a KW500 amp that uses a pair in the pre-amp section too. What's the price for these? Not as expensive as you may think Mr. Pipster, Fire me a PM (personal message). Mike. |
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Post by PinkFloyd on Mar 18, 2014 23:25:51 GMT
Good evening. Sounds interesting. I'm might take a pair of valves to try in my X10-V3 if the price is not too silly Bruce Hi Bruce, This thread is not a sales pitch and the few that I am going to sell will be at a very "sensible" price Send me a PM (private message) All the best, Mike. |
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Post by Deleted on Mar 18, 2014 23:33:29 GMT
Mike I have been away from tubes for many years now, and forgotten most of what I once knew.  Given their ultra reliability, vibration resistance/low microphony, they may have lots of other uses including buffers too.?
Regards Alex
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Post by PinkFloyd on Mar 18, 2014 23:36:28 GMT
Mike I have been away from tubes for many years now, and forgotten most of what I once knew. Given their ultra reliability, vibration resistance/low microphony, they may have lots of other uses including buffers too.?
Regards Alex
Exactly why I started this thread |
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pjc68
Been here a while! 
You dissin me?
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Post by pjc68 on Mar 18, 2014 23:40:34 GMT
Mike I have been away from tubes for many years now, and forgotten most of what I once knew. Given their ultra reliability, vibration resistance/low microphony, they may have lots of other uses including buffers too.?
Regards Alex
Well i`ll be damned Never thought i would see the day Alex may succumb to the vintage sound of the valve Paddy |
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Post by PinkFloyd on Mar 18, 2014 23:44:34 GMT
Mike I have been away from tubes for many years now, and forgotten most of what I once knew. Given their ultra reliability, vibration resistance/low microphony, they may have lots of other uses including buffers too.?
Regards Alex
Well i`ll be damned Never thought i would see the day Alex may succumb to the vintage sound of the valve Paddy Even "reliable" ones that were employed in guided missiles?  |
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Post by Deleted on Mar 19, 2014 0:03:16 GMT
Mike I have been away from tubes for many years now, and forgotten most of what I once knew. Given their ultra reliability, vibration resistance/low microphony, they may have lots of other uses including buffers too.?
Regards Alex
Well i`ll be damned Never thought i would see the day Alex may succumb to the vintage sound of the valve Paddy Paddy Not bloody likely !!!
Regards Alex
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pjc68
Been here a while!
You dissin me?
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Post by pjc68 on Mar 19, 2014 0:08:56 GMT
Well i`ll be damned Never thought i would see the day Alex may succumb to the vintage sound of the valve Paddy Paddy Not bloody likely !!!
Regards Alex
Come on Alex you know you want to Paddy |
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Post by videoguy on Mar 19, 2014 3:10:13 GMT
I am familiar with the 6112, looks like a close match to 12AX7. The 6948 is a new one to me; I will have to check the curves & spec's, could be a match for 12AY7/6072. If it is it would end my search for a miniature match for same. I am building a couple of AKG ELA M250 condenser mikes w pattern switching. There is another mini dual triode similar to the 12AU7/12AT7, the 6021; have about 9 of them on hand.
Bill W.
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Post by PinkFloyd on Mar 19, 2014 10:52:24 GMT
I am familiar with the 6112, looks like a close match to 12AX7. The 6948 is a new one to me; I will have to check the curves & spec's, could be a match for 12AY7/6072. If it is it would end my search for a miniature match for same. I am building a couple of AKG ELA M250 condenser mikes w pattern switching. There is another mini dual triode similar to the 12AU7/12AT7, the 6021; have about 9 of them on hand. Bill W. Hi Bill, They are a close match to the 12AX7 and damned superb for audio due to the ruggedised / non microphonic design. Anything that can survive the rigours of a guided missile has got to be good for a ground based audio system |
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jc
Fully Modded
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Post by jc on Mar 19, 2014 12:11:16 GMT
A small stretch of the imagination here.
These tubes that increase sound quality for the X-10, meant for missiles, probably S.T.A.s, could take you sky high, or maybe through the sound barrier like the X-1!!!!!!
OK, yeah, I've got my coat.....
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Post by PinkFloyd on Mar 19, 2014 21:32:05 GMT
A small stretch of the imagination here. These tubes that increase sound quality for the X-10, meant for missiles, probably S.T.A.s, could take you sky high, or maybe through the sound barrier like the X-1!!!!!!
OK, yeah, I've got my coat.....
Sky Vista baby! These puppies take your listening pleasure up into the stratosphere |
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Post by PinkFloyd on Mar 20, 2014 20:39:46 GMT
meant for missiles, probably S.T.A. Polaris type missiles maybe?  Will I have plenty of women camping in my garden saying "no" to the missile when they learn I am selling missile parts? GOD, I hope so! "Come in girls, I'll show you that these little glass tubes pose no danger to you (or the global populous) and will then take you into the master chamber and let you see and touch my missile"  |
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Post by smokeycigar on Mar 21, 2014 6:19:23 GMT
HI, How much is a pair of these tubes?Woops, just saw your message. Scratch the above  |
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Post by PinkFloyd on Mar 21, 2014 21:30:29 GMT
HI, How much is a pair of these tubes? Woops, just saw your message. Scratch the above Hi Smokey, Shipped this afternoon by Royal Mail, they will be with you soon..... please do report back on the SQ once you've had an opportunity to evaluate them. Mike. |
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Post by videoguy on Mar 21, 2014 22:22:20 GMT
Hi Mike: Had trouble getting a personal message to you. Do you know of a supplier that has some 6947 sub mini tubes? Need several for a single body stereo condenser mike I am building. Appreciate any assistance.
Bill Wilson
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They are all 1981 date coded, from sealed military cartons, never used (as can be seen by the leads) and the best version "Sylvania" types.... after 1984 production went over to philips and (according to my sources) guided missiles stopped hitting their targets 
Will I have plenty of women camping in my garden saying "no" to the missile when they learn I am selling missile parts? GOD, I hope so! 
