- 1,363 Posts. Joined 12/2012
- Location: Stamford, CT
- Select All Posts By This User
Recent Images In This Thread
Related Forum Threads
- Looking for a balanced tube headamp/preamp Last post on 9/3/11 at 2:48pm in Headphone Amps (full-size)
- Little Dot MK VI Last post on 9/1/13 at 10:07am in Headphone Amps (full-size)
- Head Fi's Favourite Amp for the Audeze LCD 2: $200-$1000 [POLL] Last post on 9/11/16 at 11:04am in Headphone Amps (full-size)
- Audio-gd NFB-10SE Thread Last post on 3/2/16 at 7:44am in Headphone Amps (full-size)
- chosing tube amp? Last post on 8/19/11 at 3:12pm in Headphone Amps (full-size)
Head-Fi Buying Guide (Desktop Amps & DACs)
Last edited: 11/30/16
- Head-Fi Buying Guide (Desktop Amps & DACs) 2Last edited: 11/28/16
Preamble: Advanced AcousticWerkes, in short known as AAW, is a Singapore based audio product manufacturer best known for custom-moulded in-ear monitors (CIEMs). Not long ago, they have...
The Soundaware Esther M1Pro provides a immersive sound experience held down by its dated interface and firmware. Its like driving a luxury car with all its comfort but with a dated design...
I am lucky. Very lucky. As I listened last Sunday to the i5, not only did we have the first good (not hard, but good) freeze of the Fall, but since I had been up since just before sunrise, I was...
Greetings Head-fi! Today we are going to be checking out the Bluetooth version of Mee Audio's classic budget earphone, the M9B. Mee Audio, formerly MEElectronics, has been around since 2005 and is...
I got the honour of being part of the C1 World Tour . Whatever I did, thank you! It’s not every day that 3 new products from the same manufacturer arrive on your doorstep. I have the...
- Head-Fi Buying Guide (Desktop Amps & DACs) 2
For 6AS7G tube rollers here ..... - Page 81
Head-Fi's Best Sellers
Those GEC 6080's are nice sounding tubes I prefer them and the Mullard 6080 over the more expensive Bendix graphite plates.
Something I have noticed is that a few of my Mullard 6080's are flashers but not all.
If you really think you should scrap it, send it to me! :)
Or better yet, put it on eBay.... Even with a broken guide pin, there are any number of people, such as myself, who would be happy to bid on it.
But really, keep it. As i luvmusic 2 points out, instead of aligning it by feel, you now need to align it by sight. Put a dot of fingernail polish on the side of the tube indicating the orientation of the guide pin and a corresponding dot on the socket. And then it is simple matter to line up the dots. :)
+1 on the marking...except if you know that you're easily distracted, then I wouldn't take the risk because at best you'd fry the tube, at worst it could take a section of the amp/your headphones/speakers with it. No tube's worth taking that kind of risk.
It may not be all that dangerous, but someone with more knowledge and experience then I should weigh in here...
My experience is with drivers, the ECC40, a rimlock 8-pin all-glass miniature, which Philips introduced to replace the 6SNS7, and the 2C51, a 9-pin all-glass miniature. As the pins are equidistant on the ECC40, similar to the 6SN7, it is necessary to align it to the adapter by lining up a little bump in the side of tube. On more than one occasion I have inserted it wrong. No sound, but nothing bad. Reinserting correctly, and it's fine. The adapter for the 2C51 has one of the pins cut off. And again, I have inserted it wrong more than once. And again, nothing bad.
Oh, I should add that I am using a hybrid, so no power tubes, and therefore, my experience may or may not be useful in this case....
As other have said 6080 with missing pin is still very desirable, especially if a GEC! I use a RCA I have with missing pin in a 'Leak amp' and has been going 20 years now :) Just aling on the notch and enjoy the GEC.
Than you all for the feedback. My only fear is that I tube roll a lot , so just have the fear that during my daily plugging & unplugging of tubes if I plug in the GEC incorrectly aligned then I may do permanent damage to my amp or HP.
Have any of you plugged in a power tube incorrectly aligned & did your amp / HP live to tell the tale ?
Impossible to accurately predict what will happen, depends too much on the type of tube and the amp. Best case: nothing. Realistically: the heater filament of the 6080 works on 6.3 V and is connected via pins 7 and 8 I believe. The tube itself operates at about 135V so if you'd put that on the heater (if possible, you'd have to take a detailed look at the wiring) it would result in an instant kill but you'd have to look at it in detail to know exactly what/if anything is likely to happen with the amp and the rest of the chain. The 6080 is a relatively 'benign' case, some tubes run at 450, 500.....up to 900 V or more. It's not a good idea to operate equipment of which you know one of the safety factors has been rendered inoperable, they're there for a reason.
If you are really worried about accidently inserting it wrongly how about picking up a cheap tube saver you would only need to insert the tube once into it and from then on you will be using the tube savers guide.
You only have to determine where the index tab on the missing guide pin was once. When you're sure you have it right use a red sharpie to draw an index mark on the base so it's easier to insert correctly from then on.
- For 6AS7G tube rollers here .....
Head-Fi's Best Sellers
- › NEW SONY NW-WM1Z / WM1A FLAGSHIP HI-END DAP!!! 23 seconds ago
- › Feliks Audio Elise Impressions Thread – a New Start (please read... 58 seconds ago
- › News from SPL: The Phonitor X & E Balanced Amps 1 minute ago
- › iBasso DX80 . . impressions and reviews. . and discussion NEW ... 1 minute ago
- › Westone W80 3 minutes ago
- › Moon Nēo 430HA Reference Headphone Amplifier 7 minutes ago
- › New BA IEMs from Brainwavz? 7 minutes ago
- › The Beta 22 Thread 8 minutes ago
- › Massdrop x Noble X Universal IEMs Review / Preview 12 minutes ago
- › New Member Introductions thread 13 minutes ago
- › AAW Nebula One Titanium Diaphragm In-Ear Monitor by HiFiChris
- › Soundaware Esther by tassardar
- › Cayin i5 by ngoshawk
- › MEE audio M9B Bluetooth Wireless Noise-Isolating In-Ear Stereo... by B9Scrambler
- › RHA CL1 Ceramic by Takeanidea
- › Parasound Zpre zone preamplifier by snellemin
- › Campfire Audio Vega by Jackpot77
- › EarSonics Velvet by SeeSax
- › Tony Bennett TBSE1 Signature Edition Headphone - Black/Silver by DJ The Rocket
- › Accutone Pisces Digital In-Ear Headset - Retail Packaging -... by mark2410
- › Head-Fi Buying Guide (Travel Headphones)
- › Head-Fi Buying Guide (CanJams)
- › FiiO X3II DAP firmwares with custom themes
- › Flawless Album Suggestions
- › The Audiophile Scene in a Third World Country...
- › Mad Lust Envy's Headphone Gaming Guide,...
- › Mad Lust Envy's Headphone Gaming Guide,...
- › Mad Lust Envy's Headphone Gaming Guide:...
- › Chord Mojo FAQ
- › Head-Fi Logo Gear