[Oskari]

I did some further reading and it seems Philps bought Sylvania's factory in the '80's

Yep, Philips bought the component division (ECG) of Sylvania from GTE and called it Philips ECG. At this point, they were certainly more interested in the semiconductor product lines but got the tubes as well.

 

[pctazhp]

I was reading a discussion on the 6AS7G thread about the dangers of damaging headphones by turning an OTL on with headphones plugged in. According to the discussion the period of turn-on and first few minutes of warm up is when power tubes are most likely to fail and potentially cause damage or destroy a headphone attached when the failure occurs. I'm curious if any of you turn your Elise on only when there is no headphone attached. 

 

[HOWIE13]

Yep, Philips bought the component division (ECG) of Sylvania from GTE and called it Philips ECG. At this point, they were certainly more interested in the semiconductor product lines but got the tubes as well.

Whirlwind has kindly confirmed to me that these tubes look like Sylvania 6068's so that all fits I guess.
 
Philips presumably had their eyes on the lucrative USA military market.

 

[HOWIE13]

  I was reading a discussion on the 6AS7G thread about the dangers of damaging headphones by turning an OTL on with headphones plugged in. According to the discussion the period of turn-on and first few minutes of warm up is when power tubes are most likely to fail and potentially cause damage or destroy a headphone attached when the failure occurs. I'm curious if any of you turn your Elise on only when there is no headphone attached. 

I have no hard and fast rule, just depends on circumstance but it's a great question because I destroyed my K701's on powering up a cheap Chinese amp. There was a loud cracking noise and the left driver was destroyed.

 

[Oskari]

Whirlwind has confirmed to me that these tubes look like Sylvania 6068's so that all fits I guess.

Affirmative.

Philips presumably had their eyes on the lucrative USA military market.

The military was likely still buying tubes and the semiconductors were used everywhere.

Also the free-market champion is not quite as free-market as they want you to believe.

 

[geetarman49]

  These seem very good value for  6080 tubes?
 
Does anyone know anything about them?
 
I can't find anything sonically about them on the web. It seems Philips opened a factory in the USA in the '80's to manufacture for the Military.
 
Any info would be much appreciated. Thanks.
 
 
http://www.ebay.co.uk/itm/6080WC-JAN-PHILIPS-ECG-NOS-VALVE-TUBE/311446894575?_trksid=p2045573.c100033.m2042&_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D

 
 

   
 
Good thinking- at this price worth a listen. I did some further reading and it seems Philps bought Sylvania's factory in the '80's
 
I have those Mullards-at least similar ones marked KB/QDD. Very clear and quiet tube. Would match with warm drivers I would think but have not had a chance to listen at length to them yet.
 
I'll purchase the Philips and compare the two.
 
Cheers.

consider picking up from here:   http://www.partsconnexion.com/6080.html
 
or also here:  http://www.ebay.co.uk/itm/2-pc-1-pair-NOS-NIB-Philips-ECG-JAN-6080WC-Twin-Power-Triode-Vacuum-Tube-/371542665105?hash=item5681ab2791:g:1dkAAOSw5dNWqPl1

 

[HOWIE13]

   
 

consider picking up from here:   http://www.partsconnexion.com/6080.html

Those are really cheap. Let's hope they sound better than their price would suggest.

 

[geetarman49]

  Those are really cheap. Let's hope they sound better than their price would suggest.

they purchased bulk mil stock --- from the quantities offered i would guess they easily have several thousand on hand.  as to how they sound, i suspect it's dependent on the 'chain'.  taken on their own, you could do worse for more $

 

[HOWIE13]

 
they purchased bulk mil stock --- from the quantities offered i would guess they easily have several thousand on hand.  as to how they sound, i suspect it's dependent on the 'chain'.  taken on their own, you could do worse for more $

I had already ordered a couple from that Ebay seller, although he is a bit more expensive, and should have them in a few days to try.
I'm using EL3N's as drivers at the moment so I'll try them with those first of all.

 

[hypnos1]

  I was reading a discussion on the 6AS7G thread about the dangers of damaging headphones by turning an OTL on with headphones plugged in. According to the discussion the period of turn-on and first few minutes of warm up is when power tubes are most likely to fail and potentially cause damage or destroy a headphone attached when the failure occurs. I'm curious if any of you turn your Elise on only when there is no headphone attached. 

 
Hi pct...must admit I'm taking Lukasz's word that Elise's protection circuits would probably save my T1s - so I take the (hopefully!) small risk of keeping them plugged in all the time. But as the old saying goes : "you pays your money and takes your choice" LOL!!...

...
 

The Dac is alot bigger han the Elise. The manufacturer only uses big tubes. He believes big is better.

And I agree!

 
Hi aqsw...nice to hear from you again...(I too believe you don't need these multiple tube set-ups to achieve fabulous sound, lol!

).
 
With the results I'm getting from my own tube DAC that 'only' uses - now, that is! - Tesla E88CCs (gold pins & grid posts), I can only imagine what your beauty delivers! The fact that it makes your Russian powers sound so good is certainly confirmation of its credentials...and also confirms that the 'lowly' 6N13S is in fact a much better tube than many would believe. Yet another case of what other elements in the system are providing!...(perhaps I should look into a "big tube" replacement for my stock ECC85s LOL!!...if they'll fit, that is! - mind you, the sound I'm getting already from my Teslas is MORE than good, and so I can sympathise with your reluctance(?) to upgrade any further. Plus...can Elise really be pushed to even higher limits?...I wonder...

...
ps Glad you're still liking the EL3Ns - they do indeed appear to keep upping their game along with other system upgrades...more so than any other (driver) tube I've used, including the "Chrome Dome" 7N7; several VT231s; C3g'S'; ECC31 and FDD20. It really saddens me that not everyone has the same experience...but such is "tube land", alas!..(but it sure was nice to hear the fabled Glenn, of 'Glenn Amps', say he was "shocked" by their performance, and has chosen these to use in his own amp project after many years. Given the vast array to choose from - especially with his extensive experience - this is endorsement indeed, lol!).
 

   
I am on the brink of quitting head-fi, you have no idea what is going on, maybe UT can fill you in for me. I bought 2 T1's first one was not as described, the other one never left the seller cause France did not allow shipping to my country in middle east. HD800, it is lost, no tracking information after it left Texas, I am going to customs.
 
If I ever visit UK, I will bring my DAC and we do a jam LOL
 

 
That sounds horrendous LR...there certainly wouldn't be much of my hair left if I were in your shoes, lol!

...I can only hope - as I'm sure does everyone else here - that you do eventually end up with either Senns or Beyers. Elise just cries out for them!!..hang in there, mon ami...
 
A jam sounds wonderful...but from the look of things, I doubt you would ever be allowed out of the country - Customs have probably listed you as Public Enemy Number One, for some reason lol!!...but GOOD LUCK with 'em anyway!...
 
ps. Am still trying to put together that comprehensive, infallible "recognition" factsheet for the GECs...not enough hours in the day at the moment I'm afraid, but will try as soon as I can!

 

[geetarman49]

   
...  
That sounds horrendous LR...there certainly wouldn't be much of my hair left if I were in your shoes, lol!

...I can only hope - as I'm sure does everyone else here - that you do eventually end up with either Senns or Beyers. Elise just cries out for them!!..hang in there, mon ami...
 
A jam sounds wonderful...but from the look of things, I doubt you would ever be allowed out of the country - Customs have probably listed you as Public Enemy Number One, for some reason lol!!...but GOOD LUCK with 'em anyway!...
 
ps. Am still trying to put together that comprehensive, infallible "recognition" factsheet for the GECs...not enough hours in the day at the moment I'm afraid, but will try as soon as I can!

 
& i must be following in LR's footsteps ... i still haven't been able to get mine out of customs  (or as they prefer to be known now, canada border services agency) -- they don't answer phones (in either english or french) and they don't acknowledge receipt of requested docs sent via mail ... & in another 6 calendar days, they will dispose of item - bah! a pox on them, i say!

 

[connieflyer]

I purchassd a pair of CF Thomson 6080's from them, and teh price was about the same. They were made in France and they sound okay.  The RCA Golg Aero 5998A's I just got are much better.These were a cut above the CF's for sure.  I have not put the CF's in for about 2 months now, still new, doubt if I will use them anymore.  Have much better tubes to use up and not all that much time left to do it.

 

[UntilThen]

The 5998A are not similar to 6080 or 6as7g. It has an amplification of 5.5 whereas the others are 2.

I'm glad you like it.

 

[HOWIE13]

What I am wondering is what's the difference between 5998 and 5998A tubes. Some people say they are very different.

 

[hypnos1]

   
& i must be following in LR's footsteps ... i still haven't been able to get mine out of customs  (or as they prefer to be known now, canada border services agency) -- they don't answer phones (in either english or french) and they don't acknowledge receipt of requested docs sent via mail ... & in another 6 calendar days, they will dispose of item - bah! a pox on them, i say!

And I thought our UK Customs were a pain in the *ss!!...the best of luck to you too, g49...
 

  I purchassd a pair of CF Thomson 6080's from them, and teh price was about the same. They were made in France and they sound okay.  The RCA Golg Aero 5998A's I just got are much better.These were a cut above the CF's for sure.  I have not put the CF's in for about 2 months now, still new, doubt if I will use them anymore.  Have much better tubes to use up and not all that much time left to do it.

 
Hey cf...gonna have a word with ol' Father Time on your behalf - we all want to hear a lot more from you yet on Elise "magic", lol!!