The AI-1 Dreadnought Project Pt.1

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  • Unknown
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  • F1nut
    F1nut Posts: 52,406
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    He got an award from Polk years ago. B)
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  • michaeljhsda2
    michaeljhsda2 Posts: 2,216
    edited February 2022
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    deleted
    SDA SRS 2.3TL's
    Silk Audio MS-90-BT integrated tube amp
    Yaqin MS-20L integrated tube amp
    SDA 2B TL's
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  • michaeljhsda2
    michaeljhsda2 Posts: 2,216
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    Built a new case, looking for ideas for labeling on the outside for the right and left channels.
    SDA SRS 2.3TL's
    Silk Audio MS-90-BT integrated tube amp
    Yaqin MS-20L integrated tube amp
    SDA 2B TL's
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  • michaeljhsda2
    michaeljhsda2 Posts: 2,216
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    Good question!
    SDA SRS 2.3TL's
    Silk Audio MS-90-BT integrated tube amp
    Yaqin MS-20L integrated tube amp
    SDA 2B TL's
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  • quadzilla
    quadzilla Posts: 1,543
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    The side on the right is right, left is left, assuming you lay it flat. Always worked well that way for me. No need to label. Otherwise, I've never found any difference with which side is which.
    Turntable: Empire 208
    Arm: Rega 300
    Cart: Shelter 501 III
    Phono Pre: dsachs consulting
    Digital: Marantz SACD 30n
    Pre: Conrad Johnson ET3 SE
    Amp: Conrad Johnson Premier 350
    Cables: Cardas Neutral Reference
    Speakers: SDA 2.3TL, heavily modified
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  • michaeljhsda2
    michaeljhsda2 Posts: 2,216
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    B)
    SDA SRS 2.3TL's
    Silk Audio MS-90-BT integrated tube amp
    Yaqin MS-20L integrated tube amp
    SDA 2B TL's
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  • DarqueKnight
    DarqueKnight Posts: 6,765
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    michaeljhsda2 wrote: »
    Built a new case, looking for ideas for labeling on the outside for the right and left channels.
    Toolfan66 wrote: »
    What matters most is the transformer is wired correctly in the case. I just did a test, played two of my favorite tracks on the SDA’s, I flipped the dreadnought on both tracks, sounded incredible both ways, I did not hear any changes in stage presentation..

    The Dreadnought is based on a 1:1 isolation transformer, so, as Toolfan said, as long as it is wired correctly per the manufacturer's diagram, it does not matter which side you label left or right.
    Proud and loyal citizen of the Digital Domain and Solid State Country!
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  • BlueBirdMusic
    BlueBirdMusic Posts: 3,131
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    DarqueKnight and Toolfan66, Good to know after all these years.
    "Sometimes you have to look to the past to understand where you are going in the future"
    Harry / Marietta GA
    m9iutt1ly1yd.png
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  • plastic_avatar
    plastic_avatar Posts: 747
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    O.k., Dreadnought nerds, a question:

    Realistically, is it worth using the 800va coil since the 1000va coil isn't available?

    Is it something I'm going to notice the difference on with my 1c project. Or is it degrees of a smidge of a difference?
    The Thrifty Setups in Mah House Big thrifty stereo in the basement w/ my custom SDA-1C (built with help from kind forum members) * Beautiful 1966 MCM GE console upgraded w/ Bluetooth, Dual turntable, and Paradigm speakers in family room * Swanky 1980 Realistic system and great TEAC eq with dancing colored lights in the living room * custom 5B on a system for my Dad * Ye Olde college stereo in the garage
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  • Schurkey
    Schurkey Posts: 2,130
    edited March 2022
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    plastic_avatar wrote: »
    Realistically, is it worth using the 800va coil since the 1000va coil isn't available?

    Is it something I'm going to notice the difference on with my 1c project. Or is it degrees of a smidge of a difference?
    The Polk-supplied AI-1 used a 0.13-ampere current-capacity, and 15VA (!!!) transformer.

    Matthew Polk suggested a transformer that could handle "5+ amperes" peak current.

    The 800 VA transformer is rated for two RCHs less than 7 amps.

    Folks with better ears than mine say that there's still improvement in the larger transformer. You may be letting "perfect" be the enemy of "good"; I wouldn't NOT use an 800 VA transformer because I was waiting on a 1000 VA transformer.
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  • plastic_avatar
    plastic_avatar Posts: 747
    edited March 2022
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    Folks with better ears than mine say that there's still improvement in the larger transformer. You may be letting "perfect" be the enemy of "good"; I wouldn't NOT use an 800 VA transformer because I was waiting on a 1000 VA transformer.

    I'm stepping into enemy of good territory at the moment, I do agree.

    I'm months out from realistically going Dreadnought facsimile, and have the other coils and internal wires to consider on the way. BUT, I'm trying to suss out all the options while I chug towards my first listen on the upgraded 1c. I didn't even attempt to test them out before I stripped them down. I want the experience to be totally new.

    Anyhow =)

    Yeah. if 800va is an audible improvement over stock? I think that'll do me when the time comes ;)\

    I did find this thread to digest.

    https://forum.polkaudio.com/discussion/131537/plitron-1000va-transformer-evaluation
    The Thrifty Setups in Mah House Big thrifty stereo in the basement w/ my custom SDA-1C (built with help from kind forum members) * Beautiful 1966 MCM GE console upgraded w/ Bluetooth, Dual turntable, and Paradigm speakers in family room * Swanky 1980 Realistic system and great TEAC eq with dancing colored lights in the living room * custom 5B on a system for my Dad * Ye Olde college stereo in the garage
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  • audioluvr
    audioluvr Posts: 6,079
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    Depends on the quality of the equipment upstream and your ears. As for me I thought I could hear a slight difference but it could have been the placebo effect
    Gustard X26 Pro DAC
    Belles 21A Pre Upgraded with Mundorf Supremes
    B&K M200 Sonata monoblocks refreshed and upgraded
    Polk SDA 1C's modded / 1000Va Dreadnaught
    Wireworld Silver Eclipse IC's and speaker cables
    Harman Kardon T65C w/Grado Gold. (Don't laugh. It sounds great!)

    There is about a 5% genetic difference between apes and men …but that difference is the difference between throwing your own poo when you are annoyed …and Einstein, Shakespeare and Miss January. by Dr. Sardonicus
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