how can you determine a "triple mica" Tube

faster100
faster100 Posts: 6,124
edited March 2005 in 2 Channel Audio
Just as the title says, what makes a triple mica tube? when im buying tubes how do i know its triple mica? can you actually see 3 plates inside? or is it something else...
MY HT RIG:
Sherwood p-965
Sherwood sd871 dvd
Rotel 1075 amp x5
LSI15 mains
LsiC center
LSIfx surround backs
Lsi7 side surrounds
SVS pb12/plus2

2 Channel Rig:

nad 1020 Pre-amp
Rotel 1080 stereo amp
Polk sda 2B
kenwood grunt Tuner
realistic lab 450 TT
Signal cable IC
Post edited by faster100 on
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  • RuSsMaN
    RuSsMaN Posts: 17,987
    edited March 2005
    Why does it matter? Do you even know what it means?

    Cheers,
    Russ
    Check your lips at the door woman. Shake your hips like battleships. Yeah, all the white girls trip when I sing at Sunday service.
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  • faster100
    faster100 Posts: 6,124
    edited March 2005
    Actually my tube minded mate i do, somewhat :D
    I have a set of raytheon 5751's black plate, I know that much and i want to sell them, well triple mica plates are worth much more as you know... so i wanted to find out how to tell if they were or not.. however before anyone responded here... Its a third mica spacer on top of the top mica spacer and its used to reduce microphonics... and improve sound... I researched all morning and found the info, and also finally found some pictures close enough to tell...

    so in a nut shell, Mine arent triple mica.. and now i know what to look for and why in the future...

    A simple answer could have sufficed... I always do lots of research before or during asking a question here... as you know i have plenty of time to research and i do so.. however some stuff is easier to be told from people who really know then to hunt for hours for something you never clearly get a grasp on...

    So as most always i found the answer myself...:)
    MY HT RIG:
    Sherwood p-965
    Sherwood sd871 dvd
    Rotel 1075 amp x5
    LSI15 mains
    LsiC center
    LSIfx surround backs
    Lsi7 side surrounds
    SVS pb12/plus2

    2 Channel Rig:

    nad 1020 Pre-amp
    Rotel 1080 stereo amp
    Polk sda 2B
    kenwood grunt Tuner
    realistic lab 450 TT
    Signal cable IC
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  • Pauly
    Pauly Posts: 4,519
    edited March 2005
    Originally posted by RuSsMaN
    Why does it matter? Do you even know what it means?

    Cheers,
    Russ
    Ahh the love around here just takes me back:rolleyes:

    Pauly
    Life without music would♭
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  • HBombToo
    HBombToo Posts: 5,256
    edited March 2005
    Originally posted by faster100
    Its a third mica spacer on top of the top mica spacer and its used to reduce microphonics... and improve sound...

    reduced microphonics are only a benefit of the additional support structure. You will typically find that the JAN tubes are built this way so they could endure the shock and vibration tests called out in the military standards. JAN(Joint Army Navy)

    On the other hand just because a tube does not have the additional support does not mean that it will display higher levels of microphonics.

    Sheesh, you guys read a few notes on the net and become tube engineers all of a sudden.

    HBomb
    ***WAREMTAE***
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  • Pauly
    Pauly Posts: 4,519
    edited March 2005
    I think that is why most of us are on here, to learn. Sheesh

    Like i said can you feel the love

    Pauly
    Life without music would♭
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  • RuSsMaN
    RuSsMaN Posts: 17,987
    edited March 2005
    Pauly, no need to puff your chest out. I was curious as to why he wanted to know, and what difference it made to HIM. If he had a reason, etc, or had just been 'told' it was what to look for.

    Cheers,
    Russ
    Check your lips at the door woman. Shake your hips like battleships. Yeah, all the white girls trip when I sing at Sunday service.
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  • HBombToo
    HBombToo Posts: 5,256
    edited March 2005
    Originally posted by spasticpitbull
    I think that is why most of us are on here, to learn. Sheesh

    Like i said can you feel the love

    Pauly

    I'll take your sheesh to my sheesh and raise you a sheesh^^2.

    BTW, I did answer the friggen question.
    ***WAREMTAE***
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  • Pauly
    Pauly Posts: 4,519
    edited March 2005
    No puffin the bird chest out at all Russ, i know you are a smartass from time to time and are looking out for us polkies but seems like some of you guys get off on giving some people a hard time when its really not called for IMHO. Maybe I just read into it wrong so I will leave it at that and bow out since i know dinglesquat about tubes except they sound better than SS :)

    Pauly
    Life without music would♭
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  • faster100
    faster100 Posts: 6,124
    edited March 2005
    Nah never said i was a tube expert, I am very very interested in learning though, and if the "tube experts" on here don't tell me different, what else do i have to go by other than words on the net? ya know


    Russman knows he knows "alot" about tubes, I ask questions not to contridict people, I ask because i don't know and want to learn...

    enough said,
    I didnt care what the 3rd mica plate was for.(for now)... i wanted to know what it looked like in a tube.. :) I shoulda said it was because i wanted to see if mine had them, and for when i find them in my hunting travels....
    MY HT RIG:
    Sherwood p-965
    Sherwood sd871 dvd
    Rotel 1075 amp x5
    LSI15 mains
    LsiC center
    LSIfx surround backs
    Lsi7 side surrounds
    SVS pb12/plus2

    2 Channel Rig:

    nad 1020 Pre-amp
    Rotel 1080 stereo amp
    Polk sda 2B
    kenwood grunt Tuner
    realistic lab 450 TT
    Signal cable IC
    · Share on FacebookShare on Twitter
  • faster100
    faster100 Posts: 6,124
    edited March 2005
    Originally posted by HBombToo

    BTW, I did answer the friggen question.


    Well actually i never asked what it was for, i asked how to determine if it exsisted in a tube... But the extra answer is noted for future reference :)
    MY HT RIG:
    Sherwood p-965
    Sherwood sd871 dvd
    Rotel 1075 amp x5
    LSI15 mains
    LsiC center
    LSIfx surround backs
    Lsi7 side surrounds
    SVS pb12/plus2

    2 Channel Rig:

    nad 1020 Pre-amp
    Rotel 1080 stereo amp
    Polk sda 2B
    kenwood grunt Tuner
    realistic lab 450 TT
    Signal cable IC
    · Share on FacebookShare on Twitter
  • hotwheelman
    hotwheelman Posts: 1,300
    edited March 2005
    I have a bogen h15 mono tube amp that has a Jan Ckr (6sl7), interesting info here.
    "Its worked so far but we're not out yet."
    "Hey big man let me hold a dollar"
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  • pjdami
    pjdami Posts: 1,894
    edited March 2005
    Faster,

    These are triple mica spacer tubes in the picture below. The mica spacers are in the horizontal.

    I just got these tubes last week brand new. They are not working out in my system but might work out in yours. I wouldn't mind trying out the Raytheons. We should talk;)

    Paul
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  • Pauly
    Pauly Posts: 4,519
    edited March 2005
    PJ,

    Will jump in only since we have the same pre, but AE takes 3 12ax7's and a rectifier (6 x 4). You got 3? If you do and Cliff passes i'll check em out


    Pauly
    Life without music would♭
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  • faster100
    faster100 Posts: 6,124
    edited March 2005
    Thanks for the offer, But i don't want to try anymore 5751's... gonna try and pick up a vintage set of 12ax7's


    again thanks
    MY HT RIG:
    Sherwood p-965
    Sherwood sd871 dvd
    Rotel 1075 amp x5
    LSI15 mains
    LsiC center
    LSIfx surround backs
    Lsi7 side surrounds
    SVS pb12/plus2

    2 Channel Rig:

    nad 1020 Pre-amp
    Rotel 1080 stereo amp
    Polk sda 2B
    kenwood grunt Tuner
    realistic lab 450 TT
    Signal cable IC
    · Share on FacebookShare on Twitter
  • pjdami
    pjdami Posts: 1,894
    edited March 2005
    Shucks. I only have two. I bought them NIB from a very reputable dealer on the web. These test very low in microphonics and are screened for a grade above "regular grade". I paid $35 / each and I'm sure more are available at that price. I was just looking to trade to try something else out.

    These are very warm sounding tubes in my system. I didn't care for them too much but RCA blackplate 3 mica spacer seems to work out great for a lot of people in other applications. Just not for me.

    Paul
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