WTB: Dreadnought for SDA speakers

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I'm looking at changing my setup at home which will involve using a non-common ground amp. Does anybody have a dreadnought for sale or the transformer so I could build something? Not looking to go crazy here but just functional and sound at least as good as it does now with the common ground amp and no dreadnought. Thanks
2 Channel - Polk SDA-2BTL, Carver TFM-35, Peachtree iDAC, Qobuz streamed via Episode Lynk using bubble UPnP server

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  • gyosa
    gyosa Posts: 728
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    I asked the same thing months ago , and over the years … rarer than hen’s teeth…
    Finally decided to just replace my beloved 1C’s - easier in the long run .. more expensive, but easier.

    Best bet is to build one .

    Bk
    PS Audio S300 , Yamaha wxc-50 , Salk SuperCharged Songtowers , Kimber Kable 4TC, Sony 42” - BEDROOM

    B&K EX-442 ( it will go in my casket when I die ... ) , PS Audio 4.6 preamp ( old school , but it still jams on ... ) , Eversolo DMP-A6 , Boston Acoustic voyager 7’s - POOL

    Parasound A21, Eversolo DMP-A8 , Kimber Kable 4vs , Ascend Acoustics ELX Ribbon Towers , Sony XBR-A8F 65” OLED - DEN , MAIN system

    Onkyo TX-nr609 , Polk atrium 7 , Boston acoustic sound ware (4) , Boston acoustic sub , B&W center , Sharp 65” TV - PATIO
  • msg
    msg Posts: 9,856
    edited April 6
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    Yeah, are you meaning you're looking for a KVA toroid and/or Dreadnaught built with one?

    As noted above, if you're not trying to go nuts and don't need the 1000VA transformer, you can build a Dreadnaught with the 800VA toroid, which is available off the shelf. Or you could maybe contract Dave or Trey to build one for you with the 800.

    Post edited by msg on
    I disabled signatures.
  • GlennDog
    GlennDog Posts: 3,110
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    I’m your Huckleberry…

    Communication between me and some of the other Polkies has been lacking …for one reason or another…

    Long story short

    I’ve got a 1kVA tranny and one of Larry‘s cases. In two separate boxes and unassembled

    … I’ve bought several over the years and I’m not sure which one of Larry‘s cases I have. I think it’s the Neutrik <sp> version, but it’s been several years

    Ball’s in your court

    AC Regenerator PS Audio PerfectWave Power Plant 10
    Source Lumin U1 Mini into Lampizator Baltic 4 DAC
    Pre Cary SLP-05
    Power Rogue M180 Dark monos
    Mains Salk HT2-TL
    Rythmik F12
  • xschop
    xschop Posts: 4,833
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    GlennDog wrote: »
    I’m your Huckleberry…

    Communication between me and some of the other Polkies has been lacking …for one reason or another…

    Long story short

    I’ve got a 1kVA tranny and one of Larry‘s cases. In two separate boxes and unassembled

    … I’ve bought several over the years and I’m not sure which one of Larry‘s cases I have. I think it’s the Neutrik <sp> version, but it’s been several years

    Ball’s in your court

    I would have snagged this if not for the matching case I wanted mine in.

    Now having heard for myself, a Dreadnaught is a must, and Glenn has one available.
    Don't take experimental gene therapies from known eugenicists.
  • ambiophonics
    ambiophonics Posts: 726
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    Thanks for all the replies already. Glenn I sent you a message the other day after your response, did that go through?
    2 Channel - Polk SDA-2BTL, Carver TFM-35, Peachtree iDAC, Qobuz streamed via Episode Lynk using bubble UPnP server
  • Toolfan66
    Toolfan66 Posts: 17,052
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    xschop wrote: »



    Now having heard for myself, a Dreadnaught is a must, and Glenn has one available.

    Where are the pics, did you finish it??

  • xschop
    xschop Posts: 4,833
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    I listened to it for a few hours Sunday. My 3255 class D amp didn't even get warm near the bottom air port, so there is merit to it helping your amp run cooler. I'm having a difficult time removing the 3M tape mounts from the ball bearing cup/feet because I'll set the converted 8TL's up permanently on the long console sideways. All I can say is the clarity and soundstage is HUGE from this inexpensive amp.

    ml1k7q70amcs.jpg
    Don't take experimental gene therapies from known eugenicists.
  • ambiophonics
    ambiophonics Posts: 726
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    @GlennDog just wanted to see if you got my message the other day. Thanks
    2 Channel - Polk SDA-2BTL, Carver TFM-35, Peachtree iDAC, Qobuz streamed via Episode Lynk using bubble UPnP server
  • ambiophonics
    ambiophonics Posts: 726
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    Haven't found anything so far but still looking.
    2 Channel - Polk SDA-2BTL, Carver TFM-35, Peachtree iDAC, Qobuz streamed via Episode Lynk using bubble UPnP server
  • indyhawg
    indyhawg Posts: 1,641
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    Haven't found anything so far but still looking.

    PM sent. I have the transformer and a case that Larry built if you or anyone else happens to be interested.
  • GlennDog
    GlennDog Posts: 3,110
    edited April 28
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    sorry for the disappearing act . . life's been cra-cra. If IndyHawg has what you need, go for it
    AC Regenerator PS Audio PerfectWave Power Plant 10
    Source Lumin U1 Mini into Lampizator Baltic 4 DAC
    Pre Cary SLP-05
    Power Rogue M180 Dark monos
    Mains Salk HT2-TL
    Rythmik F12
  • indyhawg
    indyhawg Posts: 1,641
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    I do not want to step over GlennDog. If you have any deal with him first, please buy his first.
  • GlennDog
    GlennDog Posts: 3,110
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    no deal in play. I won't be able to get back to him for a couple days . . . go for it
    AC Regenerator PS Audio PerfectWave Power Plant 10
    Source Lumin U1 Mini into Lampizator Baltic 4 DAC
    Pre Cary SLP-05
    Power Rogue M180 Dark monos
    Mains Salk HT2-TL
    Rythmik F12
  • ambiophonics
    ambiophonics Posts: 726
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    Working on a deal currently and wanted to confirm one thing first as I was unable to find a post with specifics. My speakers are upgraded SDA-2BTL and the person who updated them before me went with one single binding post for the interconnect cable as they didn't use a dreadnought. Is the second connection to each side of the transformer the ground from each speaker?
    2 Channel - Polk SDA-2BTL, Carver TFM-35, Peachtree iDAC, Qobuz streamed via Episode Lynk using bubble UPnP server
  • pitdogg2
    pitdogg2 Posts: 24,919
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    You'll need to put in speakon/neutrik connections.
  • ambiophonics
    ambiophonics Posts: 726
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    Where does the other connection wire to? Some of the old build threads don't look to be active anymore. It looked like the other connection was a ground reference from each side of the amplifier.
    2 Channel - Polk SDA-2BTL, Carver TFM-35, Peachtree iDAC, Qobuz streamed via Episode Lynk using bubble UPnP server
  • pitdogg2
    pitdogg2 Posts: 24,919
    edited April 29
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    Yes, it's a ground for non-common ground or monobloc amps.
    The dreadnought connection is between the speakers like the interconnect cable. On the normal pin blade cable, only the pin carries the signal. The ground connection comes into play for non- common/monobloc amps. If you're going to go with a dreadnought do it once do it right.
  • Toolfan66
    Toolfan66 Posts: 17,052
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    pitdogg2 wrote: »
    Yes, it's a ground for non-common ground or monobloc amps.
    The dreadnought connection is between the speakers like the interconnect cable. On the normal pin blade cable, only the pin carries the signal. The ground connection comes into play for non- common/monobloc amps. If you're going to go with a dreadnought do it once do it right.

    THIS^^^^^^^^^
  • ambiophonics
    ambiophonics Posts: 726
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    I appreciate all the help and responses. Is there still a dreadnought build guide somewhere so I can fully understand the wiring? I will need to locate the SDA-2B crossover schematic also if you are saying that there is wiring to change on that beyond a connection to the speaker's ground post since mine currently have just the single binding post for the interconnect.
    2 Channel - Polk SDA-2BTL, Carver TFM-35, Peachtree iDAC, Qobuz streamed via Episode Lynk using bubble UPnP server
  • xschop
    xschop Posts: 4,833
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    The pin/blade 2B's should be same schematic as the CRS+....

    https://forum.polkaudio.com/discussion/199892/xs-dreadnaught/p1
    Don't take experimental gene therapies from known eugenicists.
  • gyosa
    gyosa Posts: 728
    edited April 30
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    Working on a deal currently and wanted to confirm one thing first as I was unable to find a post with specifics. My speakers are upgraded SDA-2BTL and the person who updated them before me went with one single binding post for the interconnect cable as they didn't use a dreadnought. Is the second connection to each side of the transformer the ground from each speaker?

    You had better luck than I did searching for a dreadnaught !
    I finally gave up and bought a new pair of speakers !
    😂

    Bk



    PS Audio S300 , Yamaha wxc-50 , Salk SuperCharged Songtowers , Kimber Kable 4TC, Sony 42” - BEDROOM

    B&K EX-442 ( it will go in my casket when I die ... ) , PS Audio 4.6 preamp ( old school , but it still jams on ... ) , Eversolo DMP-A6 , Boston Acoustic voyager 7’s - POOL

    Parasound A21, Eversolo DMP-A8 , Kimber Kable 4vs , Ascend Acoustics ELX Ribbon Towers , Sony XBR-A8F 65” OLED - DEN , MAIN system

    Onkyo TX-nr609 , Polk atrium 7 , Boston acoustic sound ware (4) , Boston acoustic sub , B&W center , Sharp 65” TV - PATIO
  • ambiophonics
    ambiophonics Posts: 726
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    Made a deal with @indyhawg ! Thanks for all the replies and help.
    2 Channel - Polk SDA-2BTL, Carver TFM-35, Peachtree iDAC, Qobuz streamed via Episode Lynk using bubble UPnP server
  • GlennDog
    GlennDog Posts: 3,110
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    Made a deal with @indyhawg ! Thanks for all the replies and help.

    congrats!

    I apologize for my delayed response. This afternoon I was able to

    never mind . . . CONGRATS
    AC Regenerator PS Audio PerfectWave Power Plant 10
    Source Lumin U1 Mini into Lampizator Baltic 4 DAC
    Pre Cary SLP-05
    Power Rogue M180 Dark monos
    Mains Salk HT2-TL
    Rythmik F12
  • ambiophonics
    ambiophonics Posts: 726
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    I'm just glad to have found one of these, and a case to boot!
    2 Channel - Polk SDA-2BTL, Carver TFM-35, Peachtree iDAC, Qobuz streamed via Episode Lynk using bubble UPnP server
  • ambiophonics
    ambiophonics Posts: 726
    edited May 13
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    Case arrived today! Transformer should be coming soon as USPS said it was delayed a little and one streaming amp arrives tomorrow although it may not be used long term in this setup as I'm not sure if it will be powerful enough.
    2 Channel - Polk SDA-2BTL, Carver TFM-35, Peachtree iDAC, Qobuz streamed via Episode Lynk using bubble UPnP server
  • ambiophonics
    ambiophonics Posts: 726
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    The transformer arrived yesterday and I got it temporarily assembled to test and it sounds great! I'm looking forward to listening more over the weekend.
    2 Channel - Polk SDA-2BTL, Carver TFM-35, Peachtree iDAC, Qobuz streamed via Episode Lynk using bubble UPnP server