My 12 step program has gone awry

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  • SCompRacer
    SCompRacer Posts: 9,147
    Here is an older thread from this forum discussing tube shields.

    https://forum.polkaudio.com/discussion/177718/tube-shields/p1
    Salk SoundScape 8's * Audio Research Reference 3 * Bottlehead Eros Phono * Park's Audio Budgie SUT * Krell KSA-250 * Harmonic Technology Pro 9+ * Signature Series Sonore Music Server w/Deux PS * Roon * Gustard R26 DAC / Singxer SU-6 DDC * Heavy Plinth Lenco L75 Idler Drive * AA MG-1 Linear Air Bearing Arm * AT33PTG/II & Denon 103R * Richard Gray 600S * NHT B-12d subs * GIK Acoustic Treatments * Sennheiser HD650 *
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  • invalid
    invalid Posts: 1,549
    I really doubt that a power tube in a preamp is going to get near as hot as it would in a power amplifier output stage.
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  • ALL212
    ALL212 Posts: 1,668
    What matters here is not how hot the tubes get but extending the life of, what are now expensive, tubes by removing what heat they do produce from the surface of the glass.

    I’d prefer to never have to purchase another tube. IERC covers may be the way to do so and if I can’t get those I’ll find others that are similar.
    Aaron
    Enabler Extraordinaire
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  • ALL212
    ALL212 Posts: 1,668
    Emlyn wrote: »
    I found the Pearl Tube Coolers (not sure if that's the brand above) to deaden the sound on a preamp but didn't have a negative effect on the sound from a 6550 tubed power amp. They were inexpensive enough to try out, at Parts Connexion recommendation, and stash away if not being used.


    Yes, those are Pearls.

    I like IERC better - especially those with the internal “fingers” instead of plates.
    Aaron
    Enabler Extraordinaire
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  • Emlyn
    Emlyn Posts: 4,868
    Yes, Chris Johnson threw in a bunch for free to try out when I sent a Sonic Frontiers preamp in for upgrade. They were too much of a good thing on that 12 tube preamp but I did end up using some dampeners on the most important signal tubes to good effect.
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  • ALL212
    ALL212 Posts: 1,668
    The “Lefty” is back in production. Lefty as it’s the left side of the listening room.

    Odyssey Audio Kismet stereo amp.
    Bottlehead Moreplay pre
    Bottlehead C4 headphone amp
    Twisted Pear DAC hiding in the repurposed Yamaha receiver chassis
    Nakamichi tape deck
    Polk LSi 7’s with massive upgrades

    uhi3wts56umt.jpeg

    Aaron
    Enabler Extraordinaire
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  • maxward
    maxward Posts: 1,727
    Cool dragon, too.
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  • ALL212
    ALL212 Posts: 1,668
    edited January 11
    maxward wrote: »
    Cool dragon, too.

    Enhances the musicality by 5%

    He’s just shy of 50 years old.
    Aaron
    Enabler Extraordinaire
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  • maxward
    maxward Posts: 1,727
    If he’s made of glass, he’s had a long lucky life. My wife collects dragons and plays around with glass.
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  • xschop
    xschop Posts: 5,656
    Nice. I have one of those HP mini's with 1TB worth flac files. Great little Music server.
    Don't take experimental gene therapies from known eugenicists.
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  • ALL212
    ALL212 Posts: 1,668
    That mini is one of a few Roon bridges in place.
    Aaron
    Enabler Extraordinaire
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  • ALL212
    ALL212 Posts: 1,668
    Did the gain reduction mod to give the volume pot some extra twist.

    cfjkxcqz3uou.jpeg
    Aaron
    Enabler Extraordinaire
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  • ALL212
    ALL212 Posts: 1,668
    And, you shouldn’t be surprised, but the R200’s (upgraded) completely smoke LSi 7’s (upgraded).

    7’s aren’t bad but 200’s are much better.
    Aaron
    Enabler Extraordinaire
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  • ALL212
    ALL212 Posts: 1,668
    The base is almost done. Three sides are a single piece of cherry. My BIL took it and built this. Had I done it we’d have had firewood. I’ve done the finishing. It’s just tung oil.

    olicyx1d0was.jpeg
    0u7ix0px1b22.jpeg
    gtneaj9bw2d6.jpeg

    Even the back (ran out of wood!) is nice.

    npfohxzth2f2.jpeg

    Aaron
    Enabler Extraordinaire
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  • heiney9
    heiney9 Posts: 25,576
    Is there an upgrade thread for the R200's?

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Puritan Audio PSM136 Pwr Condtioner & Classic PC's | Legend L600 | Roon Nucleus 1 w/LPS - Tubes add soul!
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  • msg
    msg Posts: 10,532
    edited May 28
    ALL212 wrote: »
    And, you shouldn’t be surprised, but the R200’s (upgraded) completely smoke LSi 7’s (upgraded).

    7’s aren’t bad but 200’s are much better.
    You are ded to me.
    I disabled signatures.
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  • ALL212
    ALL212 Posts: 1,668
    Almost done. Just waiting for my Odyssey amp to return. Borrowed it to Klaus at AXPONA. Headphones work just fine.

    io8z3bbdp633.jpeg
    Aaron
    Enabler Extraordinaire
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  • ALL212
    ALL212 Posts: 1,668
    @msg I’m old - damn near ded anyway !

    Get that bike headed west!
    Aaron
    Enabler Extraordinaire
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  • heiney9
    heiney9 Posts: 25,576
    ALL212 wrote: »
    Almost done. Just waiting for my Odyssey amp to return. Borrowed it to Klaus at AXPONA. Headphones work just fine.

    io8z3bbdp633.jpeg

    That wood case is beautiful!

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Puritan Audio PSM136 Pwr Condtioner & Classic PC's | Legend L600 | Roon Nucleus 1 w/LPS - Tubes add soul!
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  • SCompRacer
    SCompRacer Posts: 9,147
    Nice job! Was that Cherry from the farm or the auction? I like the knobs too. You know you're getting old when it's RMD time. :D

    Salk SoundScape 8's * Audio Research Reference 3 * Bottlehead Eros Phono * Park's Audio Budgie SUT * Krell KSA-250 * Harmonic Technology Pro 9+ * Signature Series Sonore Music Server w/Deux PS * Roon * Gustard R26 DAC / Singxer SU-6 DDC * Heavy Plinth Lenco L75 Idler Drive * AA MG-1 Linear Air Bearing Arm * AT33PTG/II & Denon 103R * Richard Gray 600S * NHT B-12d subs * GIK Acoustic Treatments * Sennheiser HD650 *
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  • ALL212
    ALL212 Posts: 1,668
    edited May 28
    This piece came from a sawyer we used years ago. He had a collection of bits he didn’t want and gave them to us. I think I took most of that. Some used in my cd shelving.

    x7frcg83jods.jpeg

    Post edited by ALL212 on
    Aaron
    Enabler Extraordinaire
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  • BlueBirdMusic
    BlueBirdMusic Posts: 2,925
    @ALL212, I'll have a drink in celebration of your fine work!

    d2hadnqi6lgm.png
    "Sometimes you have to look to the past to understand where you are going in the future"
    Harry / Marietta GA
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