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  • mhardy6647
    mhardy6647 Posts: 35,562
    edited November 2019
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    I forgot you had S*E*X! I mean... a S*E*X... umm, I mean... well, you know...

    ;)

    Same kinda deal, is the 6DN7. The power triode section is the one with the big heat dissipation structure on it (arrow). The other triode section is kinda wussy lookin'.

    nar36npprgta.png
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  • verb
    verb Posts: 10,176
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    mhardy6647 wrote: »
    I forgot you had S*E*X! I mean... a S*E*X... umm, I mean... well, you know...

    ;)

    Yep! One triode is T-shaped (typical sylvania), the other a small rectangular cross section.
    Basement: Polk SDA SRS 1.2tl's, Cary SLP-05 Pre with ultimate upgrade,McIntosh MCD301 CD/SACD player, Northstar Designs Excelsio DAC, Cambridge 851N streamer, McIntosh MC300 Amp, Silnote Morpheus Ref2, Series2 Digital Cables, Silnote Morpheus Ref2 Series2 XLR's, Furman 15PFi Power Conditioner, Pangea Power Cables, MIT Shotgun S3 IC's, MIT Shotgun S1 Bi-Wire speaker cables
    Office: PC, EAR Acute CD Player, EAR 834L Pre, Northstar Designs Intenso DAC, Antique Sound Labs AV8 Monoblocks, Denon UDR-F10 Cassette, Acoustic Technologies Classic FR Speakers, SVS SB12 Plus sub, MIT AVt2 speaker cables, IFI Purifier2, AQ Cinnamon USB cable, Groneberg Quatro Reference IC's
    Spare Room: Dayens Ampino Integrated Amp, Tjoeb 99 tube CD player (modified Marantz CD-38), Analysis Plus Oval 9's, Zu Jumpers, AudioEngine B1 Streamer, Klipsch RB-61 v2, SVS PB1000 sub, Blue Jeans RCA IC's, Shunyata Hydra 8 Power Conditioner
    Living Room: Peachtree Nova Integrated, Cambridge CXN v2 Streamer, Rotel RCD-1072 CD player, Furman 15PFi Power Conditioner, Polk RT265 In Wall Speakers, Polk DSW Pro 660wi sub
    Garage #1: Cambridge Audio 640A Integrated Amp, Project Box-E BT Streamer, Polk Tsi200 Bookies, Douglas Speaker Cables, Shunyata Power Conditioner
    Garage #2: Cambridge Audio EVO150 Integrated Amplifier, Polk L200's, Analysis Plus Silver Oval 2 Speaker Cables, IC's TBD.
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    edited November 2019
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  • verb
    verb Posts: 10,176
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    Funny Ivan I looked at that too! Again at the time I was such a tube newbie. Those are the only ones I have for this rig.

    Oh Lord, I just found myself looking for some better NOS 6ND7 tubes! Help me! :smile:
    Basement: Polk SDA SRS 1.2tl's, Cary SLP-05 Pre with ultimate upgrade,McIntosh MCD301 CD/SACD player, Northstar Designs Excelsio DAC, Cambridge 851N streamer, McIntosh MC300 Amp, Silnote Morpheus Ref2, Series2 Digital Cables, Silnote Morpheus Ref2 Series2 XLR's, Furman 15PFi Power Conditioner, Pangea Power Cables, MIT Shotgun S3 IC's, MIT Shotgun S1 Bi-Wire speaker cables
    Office: PC, EAR Acute CD Player, EAR 834L Pre, Northstar Designs Intenso DAC, Antique Sound Labs AV8 Monoblocks, Denon UDR-F10 Cassette, Acoustic Technologies Classic FR Speakers, SVS SB12 Plus sub, MIT AVt2 speaker cables, IFI Purifier2, AQ Cinnamon USB cable, Groneberg Quatro Reference IC's
    Spare Room: Dayens Ampino Integrated Amp, Tjoeb 99 tube CD player (modified Marantz CD-38), Analysis Plus Oval 9's, Zu Jumpers, AudioEngine B1 Streamer, Klipsch RB-61 v2, SVS PB1000 sub, Blue Jeans RCA IC's, Shunyata Hydra 8 Power Conditioner
    Living Room: Peachtree Nova Integrated, Cambridge CXN v2 Streamer, Rotel RCD-1072 CD player, Furman 15PFi Power Conditioner, Polk RT265 In Wall Speakers, Polk DSW Pro 660wi sub
    Garage #1: Cambridge Audio 640A Integrated Amp, Project Box-E BT Streamer, Polk Tsi200 Bookies, Douglas Speaker Cables, Shunyata Power Conditioner
    Garage #2: Cambridge Audio EVO150 Integrated Amplifier, Polk L200's, Analysis Plus Silver Oval 2 Speaker Cables, IC's TBD.
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  • krazypolk
    krazypolk Posts: 745
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    Deer meandering across the street from my house yesterday afternoon.o8jy8a5avukf.jpg
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  • verb
    verb Posts: 10,176
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    pitdogg2 wrote: »
    verb wrote: »
    Funny Ivan I looked at that too! Again at the time I was such a tube newbie. Those are the only ones I have for this rig.

    Oh Lord, I just found myself looking for some better NOS 6ND7 tubes! Help me! :smile:

    I have a few coin base 6sn7 and 6bx7 and I can state they are "unpleasant" to my ears.

    Interesting, as they look like IMO, just trying to reduce manufacturing costs as much as possible.
    Basement: Polk SDA SRS 1.2tl's, Cary SLP-05 Pre with ultimate upgrade,McIntosh MCD301 CD/SACD player, Northstar Designs Excelsio DAC, Cambridge 851N streamer, McIntosh MC300 Amp, Silnote Morpheus Ref2, Series2 Digital Cables, Silnote Morpheus Ref2 Series2 XLR's, Furman 15PFi Power Conditioner, Pangea Power Cables, MIT Shotgun S3 IC's, MIT Shotgun S1 Bi-Wire speaker cables
    Office: PC, EAR Acute CD Player, EAR 834L Pre, Northstar Designs Intenso DAC, Antique Sound Labs AV8 Monoblocks, Denon UDR-F10 Cassette, Acoustic Technologies Classic FR Speakers, SVS SB12 Plus sub, MIT AVt2 speaker cables, IFI Purifier2, AQ Cinnamon USB cable, Groneberg Quatro Reference IC's
    Spare Room: Dayens Ampino Integrated Amp, Tjoeb 99 tube CD player (modified Marantz CD-38), Analysis Plus Oval 9's, Zu Jumpers, AudioEngine B1 Streamer, Klipsch RB-61 v2, SVS PB1000 sub, Blue Jeans RCA IC's, Shunyata Hydra 8 Power Conditioner
    Living Room: Peachtree Nova Integrated, Cambridge CXN v2 Streamer, Rotel RCD-1072 CD player, Furman 15PFi Power Conditioner, Polk RT265 In Wall Speakers, Polk DSW Pro 660wi sub
    Garage #1: Cambridge Audio 640A Integrated Amp, Project Box-E BT Streamer, Polk Tsi200 Bookies, Douglas Speaker Cables, Shunyata Power Conditioner
    Garage #2: Cambridge Audio EVO150 Integrated Amplifier, Polk L200's, Analysis Plus Silver Oval 2 Speaker Cables, IC's TBD.
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  • mhardy6647
    mhardy6647 Posts: 35,562
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    pitdogg2 wrote: »
    mhardy6647 wrote: »
    a bit of dissimilar twin triode cheesecake for those of you (us) who are into such things* ... I was just checkin' some 6EM7s before sending 'em along to a hifi paisan/fellow traveler who is doing some restoration/repair of a recalcitrant (commercial) SET amplifier. They were so cute, I had to snap a few piccies. B)


    old school:

    49064549686_4f293a1ba4_h.jpgDSC_7527 (2) by Mark Hardy, on Flickr

    new school:

    49064549586_cebb0a5452_h.jpgDSC_7531 (2) by Mark Hardy, on Flickr

    _____________
    * and not that there's anything wrong with that. :#

    Many folks dislike the coin base tubes that came along. Did you ever hear a difference in sound quality with coin base as oppose to the octal base?

    Didn't listen to these.

    Simply put, Thomas Myer (Vinyl Savior/Tube of the Month) puts the coin base tubes in perspective. There's nothing wrong with 'em compared to the 'normal' base tubes.
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  • mhardy6647
    mhardy6647 Posts: 35,562
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    81bmf1ipyr84.png

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  • daddyjt
    daddyjt Posts: 3,265
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    Nightfall wrote: »
    Gas was 99 cents a gallon when I got my license. I could have filled my current car for a freaking ten spot. It's all good though, I feel for the oil big wigs. They were rummaging through garbage for meals, at least now they can afford Ramen now and again.

    I was 18 when Die Hard came out in ‘88...

    Nakatomi Plaza, 12/24/88
    5amq1myg4upf.jpeg

    “Human beings are born with different capacities. If they are free, they are not equal. And if they are equal, they are not free.”
    ― Aleksandr Solzhenitsyn
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  • joecoulson
    joecoulson Posts: 4,983
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    Best movie ever^
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  • Viking64
    Viking64 Posts: 7,823
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    joecoulson wrote: »
    Best movie ever^

    vdn6hk4rob9l.jpg
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  • joecoulson
    joecoulson Posts: 4,983
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    aseshuampd8i.png
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  • Viking64
    Viking64 Posts: 7,823
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    Bork? WTF?

    cgnifxiiwc4h.jpg
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  • krazypolk
    krazypolk Posts: 745
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    Love those gas prices.
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  • Viking64
    Viking64 Posts: 7,823
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    krazypolk wrote: »
    Love those gas prices.

    DON'T TELL ME WHAT TO DO!!!!!
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  • krazypolk
    krazypolk Posts: 745
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    I love those gas prices. Better? >:)
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  • aprazer402
    aprazer402 Posts: 3,465
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    360k24ommqkp.jpg
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  • mhardy6647
    mhardy6647 Posts: 35,562
    edited November 2019
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    man, this thread's taken a tern for the wurst... umm... I mean...


    54pmon162fd0.png
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  • aprazer402
    aprazer402 Posts: 3,465
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    Now it's going bad! :) The good old days? ;)

    g4d2czg84op2.jpg
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  • mhardy6647
    mhardy6647 Posts: 35,562
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    ... in case you might want to render yourself invisible (to deep neural networks, at least)...

    x5xruknlw9jd.png


    https://news.northeastern.edu/2019/11/13/this-t-shirt-could-make-you-invisible-to-deep-neural-networks/?utm_source=News@Northeastern&utm_campaign=da86fb6608-EMAIL_CAMPAIGN_2019_11_15_02_03&utm_medium=email&utm_term=0_508ab516a3-da86fb6608-278508341
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  • verb
    verb Posts: 10,176
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    Yes I have to admit, I looked up the word osculate! Every day I learn something new on CP!

    Now where's the Mrs? Honey can I have an osculation? :smile:
    Basement: Polk SDA SRS 1.2tl's, Cary SLP-05 Pre with ultimate upgrade,McIntosh MCD301 CD/SACD player, Northstar Designs Excelsio DAC, Cambridge 851N streamer, McIntosh MC300 Amp, Silnote Morpheus Ref2, Series2 Digital Cables, Silnote Morpheus Ref2 Series2 XLR's, Furman 15PFi Power Conditioner, Pangea Power Cables, MIT Shotgun S3 IC's, MIT Shotgun S1 Bi-Wire speaker cables
    Office: PC, EAR Acute CD Player, EAR 834L Pre, Northstar Designs Intenso DAC, Antique Sound Labs AV8 Monoblocks, Denon UDR-F10 Cassette, Acoustic Technologies Classic FR Speakers, SVS SB12 Plus sub, MIT AVt2 speaker cables, IFI Purifier2, AQ Cinnamon USB cable, Groneberg Quatro Reference IC's
    Spare Room: Dayens Ampino Integrated Amp, Tjoeb 99 tube CD player (modified Marantz CD-38), Analysis Plus Oval 9's, Zu Jumpers, AudioEngine B1 Streamer, Klipsch RB-61 v2, SVS PB1000 sub, Blue Jeans RCA IC's, Shunyata Hydra 8 Power Conditioner
    Living Room: Peachtree Nova Integrated, Cambridge CXN v2 Streamer, Rotel RCD-1072 CD player, Furman 15PFi Power Conditioner, Polk RT265 In Wall Speakers, Polk DSW Pro 660wi sub
    Garage #1: Cambridge Audio 640A Integrated Amp, Project Box-E BT Streamer, Polk Tsi200 Bookies, Douglas Speaker Cables, Shunyata Power Conditioner
    Garage #2: Cambridge Audio EVO150 Integrated Amplifier, Polk L200's, Analysis Plus Silver Oval 2 Speaker Cables, IC's TBD.
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  • Viking64
    Viking64 Posts: 7,823
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    verb wrote: »
    Every day I learn something new on CP!

    Maybe some day you'll learn what "CP" normally stands for. :o
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  • aprazer402
    aprazer402 Posts: 3,465
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    Question. I've seen many brands of tubes mentioned on CP. Never seen this brand. Was this a company that just re-branded other mfg. tubes and sold them under their company name?
    ka4ofvopb3hu.jpg
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  • mhardy6647
    mhardy6647 Posts: 35,562
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    aprazer402 wrote: »
    Question. I've seen many brands of tubes mentioned on CP. Never seen this brand. Was this a company that just re-branded other mfg. tubes and sold them under their company name?
    ka4ofvopb3hu.jpg

    Because they're most likely rebrands. Sometimes, the rebrands were excellent tubes, usually not, though.

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  • aprazer402
    aprazer402 Posts: 3,465
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    Thanks, that was my first guess. Did a little browsing. Several similar companies existed in the past. Some obtained seconds, washed off the original brand and put on their own. Back in the day, In NJ, "obtained" may be a correct word choice. :)
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  • Unknown
    Unknown
    edited November 2019
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  • aprazer402
    aprazer402 Posts: 3,465
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    pitdogg2 wrote: »
    aprazer402 wrote: »
    Thanks, that was my first guess. Did a little browsing. Several similar companies existed in the past. Some obtained seconds, washed off the original brand and put on their own. Back in the day, In NJ, "obtained" may be a correct word choice. :)

    Not exactly some of the big tube companies made tube for others. You need to look at tube codes, it may say "realistic" or "Rogers" etc but the tube code number will absolutely tell you who manufactured the tube. 322= Tung-Sol 188= GE 337= Westinghouse etc.etc. then look at the internal structure of tube some are dead giveaways. type of getter and other things.

    Rad-Tel never made tubes

    I agree Rad-Tel never made tubes of their own. I had just read that some tube companies like Rad-Tel, back in the 40-50's bought tubes, either seconds or not, and some removed (washed off) the orig. mfg. name and re-branded them themselves. Rather than GE, RCA, Westinghouse... selling their own tubes, rebranded i.e.: labeled Realistic to Radio Shack...
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  • mhardy6647
    mhardy6647 Posts: 35,562
    edited November 2019
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    yes, all sorts of skulduggery in the electronics 'aftermarket', then as now.

    The funny thing is, the off-brands can work both ways. One of the local gurus told of picking up some NOS, NIB "International Servicemaster" branded 2A3s for chump change... in the box? Rebranded RCAs.

    jwrxpn0g0roo.png
    (random, borrowed image for illustrative purposes only)

    As to the EIA manufacturer numbers (which should indeed be on proper "OEM" Amurrican tubes, but will be lost on "washed"* tubes), an EIA code list is invaluable (which is not a synonym for worthless B) ) when playin' the vintage hifi game.

    Here's the best one that I know of. In case any of you weren't aware of this/these.

    http://www.audiophool.com/Misc/EIAcodes1961.pdf

    Here's a nice little primer in the realm of speaker (driver) codes, too, while I am at it.
    https://www.tedweber.com/speaker-codes-application/

    sorry for the digression :p

    bn9g5g4l1cf7.png

    ____________
    * Some tube manufacturers used 'delicate' print on their tubes so that unscrupulous repairpersonages couldn't just take an old, pulled tube ('plinker') and clean it up with water or Windex, then sell it as new to an unsuspecting customer. Those of us who rehab decades-old, grungy vacuum tube hardware have learned to clean such tubes very gently indeed.
    *
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