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Thread: New speakers and amps

  1. #2481
    Join Date: Feb 2010

    Location: Berkshire, UK

    Posts: 3,003
    I'm Tom.

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    Quote Originally Posted by tubehunter View Post
    Just wire in series 110v + 110v = 220v

    As all board voltages appear to be regulated there is no need for a step down device.

    It's really only needed when you have ac heaters etc...

    Happy Days
    Hi Duncan, for the technically challenged, can you elaborate?

    Are you saying it doesn't matter that the mains transformer is 220v, because the secondaries are regulated? How does that work?
    Main: Speakers 'RFC' Tannoy Canterburys / custom crossovers; Amp - Radford STA100; Pre EAR 912; Vinyl: Thorens TD124 MkII + Ikeda IT345-CR1 / Ikeda IT-407 tonearms; Cartridges Stereo - Miyajima Madake, Ortofon SPU Royal N, Ikeda 9C III, SAEC/Excel C3; Mono - Miyajimas - Zero 0.7, Premium 1.0, Sonovox MC-4 1.0, Edison '78' 4.0 conical, and Shure M44 strapped for mono with several Expert Stylus conicals for different eras of 78s; Phono stage and SUT from EAR 912; Esoteric Sound Re-Equalizer for equalisation of early mono and 78, switchable in from tape loop; Digital: Audio Note CDT2/II transport, heavily modded AN Kit DAC + Mutec MC3+USB.

    Study: Speakers - Tannoy DC6; Amp: Pass Aleph 'Mini'; preamp - Firebottle custom; Vinyl: Garrard 401 with AT1503 tonearm and vintage Ortofon SL-15e with matching Ortofon 2-15k SUT; Phono Stage: Firebottle Plus; Digital - Trichord Genesis III CDP + Arcam rBlink; Schiit Multibit DAC.

  2. #2482
    Join Date: Jan 2013

    Location: Bristol

    Posts: 3,873
    I'm Justin.

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    Quote Originally Posted by montesquieu View Post
    Are you saying it doesn't matter that the mains transformer is 220v, because the secondaries are regulated? How does that work?
    I think he is, didn't read what he said earlier and deleted a post as a consequence. Let's see...
    "I've got my giant hits discotheque album. I empty a bottle - I feel a bit free."

  3. #2483
    Join Date: May 2011

    Location: Glasgow

    Posts: 6,730
    I'm Brian.

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    Quote Originally Posted by User211 View Post
    Yes.
    Happy days indeed . I was beginning to think I needed to spend hundreds on a regen .
    Regards
    Brian

    Sell your cleverness and buy bewilderment . (Rumi )


    Korus Computer Audio music server .
    DAC 3 French DAC
    Amplifier : Rega Brio R
    Speakers : Tannoy 637
    Interconnects : MS Audio / Klotz MC5000 .
    Speaker cables : Chord Epic Twin

  4. #2484
    Join Date: Jan 2008

    Location: Forest of Dean, Glos

    Posts: 9,949
    I'm Jerry.

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    Curiously, the only component that has ever gone *BANG* on me of its own accord was a Power Inspired AG1500 regenerator.
    Go figure.
    Jerry

    Qobuz Hifi / Spotify Premium streaming, SMSL M8 DAC + L-PSU, Herron VTSP-2 valve preamp, Trigon TRE 50 monoblocks, MBL 116F.

    Cables: Wireworld Starlight USB, Ixos Ixotica i/c, W&M speaker cables, Belden 19364 mains cables

  5. #2485
    Join Date: Feb 2010

    Location: Berkshire, UK

    Posts: 3,003
    I'm Tom.

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    Quote Originally Posted by jandl100 View Post
    Curiously, the only component that has ever gone BANG on me of its own accord was a Power Inspired AG1500 regenerator.
    Go figure.
    Obviously can't take the pressure in your gaff of all the chopping and changing ...
    Main: Speakers 'RFC' Tannoy Canterburys / custom crossovers; Amp - Radford STA100; Pre EAR 912; Vinyl: Thorens TD124 MkII + Ikeda IT345-CR1 / Ikeda IT-407 tonearms; Cartridges Stereo - Miyajima Madake, Ortofon SPU Royal N, Ikeda 9C III, SAEC/Excel C3; Mono - Miyajimas - Zero 0.7, Premium 1.0, Sonovox MC-4 1.0, Edison '78' 4.0 conical, and Shure M44 strapped for mono with several Expert Stylus conicals for different eras of 78s; Phono stage and SUT from EAR 912; Esoteric Sound Re-Equalizer for equalisation of early mono and 78, switchable in from tape loop; Digital: Audio Note CDT2/II transport, heavily modded AN Kit DAC + Mutec MC3+USB.

    Study: Speakers - Tannoy DC6; Amp: Pass Aleph 'Mini'; preamp - Firebottle custom; Vinyl: Garrard 401 with AT1503 tonearm and vintage Ortofon SL-15e with matching Ortofon 2-15k SUT; Phono Stage: Firebottle Plus; Digital - Trichord Genesis III CDP + Arcam rBlink; Schiit Multibit DAC.

  6. #2486
    Join Date: Jun 2008

    Location: Happy Cheshire

    Posts: 612
    I'm Duncan.

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    For example a L7806CV Linear Voltage Regulator

    This device will accept a voltage range of 11v to 35v input for a 6v 1.5A output.

    Problem is, as the input voltage rises the device will get warmer and will need a heat sink.
    Also the rectifier diodes require 0.6v.

    So ideally the input needs to be about 3 or 4 volts higher than the required output voltage.

    The secondary windings on the pictured transformer show voltages 2x15v, 8v, 7v and another I can't make out.

    So adding 10% gives 2x16.5v, 8.8v and 7.7v, I'm pretty sure the voltage regs' can handle that.

    Happy Days

  7. #2487
    Join Date: Jan 2013

    Location: Bristol

    Posts: 3,873
    I'm Justin.

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    Quote Originally Posted by jandl100 View Post
    Curiously, the only component that has ever gone *BANG* on me of its own accord was a Power Inspired AG1500 regenerator.
    Go figure.
    Mine went bats last week. Then I realised I was overloading it. It is now fine.

    I'm tempted to try the DAC-05 BTW at £200 odd. If that is better by 10% it'd easily be worth it.
    "I've got my giant hits discotheque album. I empty a bottle - I feel a bit free."

  8. #2488
    Join Date: Feb 2010

    Location: Berkshire, UK

    Posts: 3,003
    I'm Tom.

    Default

    Quote Originally Posted by tubehunter View Post
    For example a L7806CV Linear Voltage Regulator

    This device will accept a voltage range of 11v to 35v input for a 6v 1.5A output.

    Problem is, as the input voltage rises the device will get warmer and will need a heat sink.
    Also the rectifier diodes require 0.6v.

    So ideally the input needs to be about 3 or 4 volts higher than the required output voltage.

    The secondary windings on the pictured transformer show voltages 2x15v, 8v, 7v and another I can't make out.

    So adding 10% gives 2x16.5v, 8.8v and 7.7v, I'm pretty sure the voltage regs' can handle that.

    Happy Days
    Thanks Duncan that's helpful.

    And no issues with the mains transformer itself running potentially 20% above specified voltage?
    Main: Speakers 'RFC' Tannoy Canterburys / custom crossovers; Amp - Radford STA100; Pre EAR 912; Vinyl: Thorens TD124 MkII + Ikeda IT345-CR1 / Ikeda IT-407 tonearms; Cartridges Stereo - Miyajima Madake, Ortofon SPU Royal N, Ikeda 9C III, SAEC/Excel C3; Mono - Miyajimas - Zero 0.7, Premium 1.0, Sonovox MC-4 1.0, Edison '78' 4.0 conical, and Shure M44 strapped for mono with several Expert Stylus conicals for different eras of 78s; Phono stage and SUT from EAR 912; Esoteric Sound Re-Equalizer for equalisation of early mono and 78, switchable in from tape loop; Digital: Audio Note CDT2/II transport, heavily modded AN Kit DAC + Mutec MC3+USB.

    Study: Speakers - Tannoy DC6; Amp: Pass Aleph 'Mini'; preamp - Firebottle custom; Vinyl: Garrard 401 with AT1503 tonearm and vintage Ortofon SL-15e with matching Ortofon 2-15k SUT; Phono Stage: Firebottle Plus; Digital - Trichord Genesis III CDP + Arcam rBlink; Schiit Multibit DAC.

  9. #2489
    Join Date: Jun 2008

    Location: Happy Cheshire

    Posts: 612
    I'm Duncan.

    Default

    Itís closer to 10%

    220 + 22 = 242

    So not really, no

  10. #2490
    Join Date: May 2011

    Location: Glasgow

    Posts: 6,730
    I'm Brian.

    Default

    Thanks for the clarification Duncan
    Regards
    Brian

    Sell your cleverness and buy bewilderment . (Rumi )


    Korus Computer Audio music server .
    DAC 3 French DAC
    Amplifier : Rega Brio R
    Speakers : Tannoy 637
    Interconnects : MS Audio / Klotz MC5000 .
    Speaker cables : Chord Epic Twin

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