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Thread: New speakers and amps

  1. #2471
    Join Date: Feb 2010

    Location: Berkshire, UK

    Posts: 3,014
    I'm Tom.

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    Quote Originally Posted by struth View Post
    Run mine off 230v. Seems to be happy enough

    You also run a regenerator at 230v, so even if you are using a non-export 220v model, it's not so far out of spec. Without a regenerator the UK standard (240v +/- 10%) can see voltages as high as 264v, I don't fancy how a 220v transformer would behave in those circumstances. Actually it's more than a bit irresponsible to be implicitly telling people 220v is OK when for most, it isn't safe.
    Last edited by struth; 12-03-2018 at 17:51.
    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. #2472
    Join Date: Aug 2009

    Location: Staffordshire, England

    Posts: 20,714
    I'm Martin.

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    Running it on too high a voltage will also cause it to fail long before it would normally be expected to.
    Martin



    Current Lash Up:

    Technics SL1200P CD Player * NVA P90SA passive pre / Krell KSA50S Power amp * JM Lab Electra 926 loudspeakers *



    'The best I advice I ever received was to always remember that no-one else has any idea what they are doing either.'

  3. #2473
    Join Date: Feb 2013

    Location: W Lothian

    Posts: 44,825
    I'm Grant.

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    if they are 220 models, and lets face it they could all be, irrelevent of what the label says, then stepping down your voltage would be wise. if you dont leave it on unattended it is less of a risk .. ive ran 220v amp on 240 and it was ok, but i may have been lucky. my other one had a bucker.. much of the mains here is usually now no more than 243, and usually 237. these days. dont know if they have changed anything
    Regards,
    Grant ....

    I've said it before and I'll say it again: democracy simply-doesn't-work
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    OPPO BDP-103D DARBEE - JBE SERIES 3/B&O SP1/EMOTIVA XPS1/12V BATTERY - TWIN PRO MONOBLOCK AMPLIFIERS - XIANG SHENG DAC\PRE\HEADPHONE AMP\WE TUBED - TWIN AVANTREE OASIS CLASS 1 BLUETOOTHS - AUDIO TECHNICA ATH-MSR7 & OPPO PM-3 PLANAR HEADPHONES - WIN10 JRIVER24, SPOTIFY - SMSL M6 MINIDAC - RPI/AUDIOPHONICS/5V BATTERY - FULL RANGE TWIN TELEFUNKEN/Q ACOUSTIC BT3/CANTON SUB - P.INSPIRED MAINS REGENERATED.

  4. #2474
    Join Date: Feb 2010

    Location: Berkshire, UK

    Posts: 3,014
    I'm Tom.

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    Quote Originally Posted by struth View Post
    if they are 220 models, and lets face it they could all be, irrelevent of what the label says, then stepping down your voltage would be wise. if you dont leave it on unattended it is less of a risk .. ive ran 220v amp on 240 and it was ok, but i may have been lucky. my other one had a bucker.. much of the mains here is usually now no more than 243, and usually 237. these days. dont know if they have changed anything
    There appear to be some of these labelled 110-220v, and others 220v-240. It would certainly be interesting to see if there are any material differences between the two models or if they are just labelled differently.
    differently.
    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.

  5. #2475
    Join Date: Jan 2013

    Location: Bristol

    Posts: 3,875
    I'm Justin.

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    Despite what I said earlier, my board review is as pictured below.

    Note mains seems to be wired directly into a 110V transformer. How does that work?

    Mobile pic soz.
    "I've got my giant hits discotheque album. I empty a bottle - I feel a bit free."

  6. #2476
    Join Date: Mar 2008

    Location: Dunfermline, Scotland, UK

    Posts: 12,365
    I'm inthescottishmafia.

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    It's two 110v windings. Depending on how you wire it, it can do either 110v or 220v.
    “Music has always been a matter of energy to me, a question of fuel. Sentimental people call it inspiration, but what they really mean is fuel. I have always needed fuel. I am a serious consumer. On some nights I still believe that a car with the gas needle on empty can run about fifty more miles if you have the right music very loud on the radio”

    Hunter S Thompson

  7. #2477
    Join Date: Jun 2008

    Location: Happy Cheshire

    Posts: 613
    I'm Duncan.

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    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

  8. #2478
    Join Date: May 2011

    Location: Glasgow

    Posts: 6,730
    I'm Brian.

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    Can these be used without a 230V regenerator unit , at normal UK voltages ?
    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

  9. #2479
    Join Date: Jan 2008

    Location: Forest of Dean, Glos

    Posts: 9,958
    I'm Jerry.

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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
    Thanks Duncan.

    Happy days.
    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

  10. #2480
    Join Date: Jan 2013

    Location: Bristol

    Posts: 3,875
    I'm Justin.

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    Quote Originally Posted by brian2957 View Post
    Can these be used without a 230V regenerator unit , at normal UK voltages ?
    Yes.
    "I've got my giant hits discotheque album. I empty a bottle - I feel a bit free."

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