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Thread: Step down transformers

  1. #1
    Join Date: Dec 2015

    Location: Alicante. Spain.

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    I'm Adrian.

    Default Step down transformers

    I was wondering if using a step down transformer with power amps might be a bad idea. Have my eye on a Japanese power amp with an industrial sized step down transformer. Would this hinder dynamics?

    Adey

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  2. #2
    Join Date: Oct 2012

    Location: NE England

    Posts: 4,173
    I'm Jez.

    Default

    Absolutely not. It will be fine.
    Arkless Electronics-Engineered to be better. Tel. 01670 530674 (after 1pm)

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  3. #3
    Join Date: Feb 2012

    Location: Falun, Sweden

    Posts: 2,245
    I'm Mike.

    Default

    Or not, industrial size transformers have a tendency to make mechanical noice.
    I'd personally seek a way co convert it to take 230v as i wouldnt want the extra bulk but thats just me!

  4. #4
    Join Date: Feb 2008

    Location: South Wales

    Posts: 9,151
    I'm NotTakingLifeTooSeriouslyTheseDays.

    Default

    Make sure you use a decent transformer, ie; the step down should have a seperate primary, and secondary winding, therefore; its also an isolating transformer, and not an Auto transformer, which has one winding, which is tapped!
    A...
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  5. #5
    Join Date: Oct 2012

    Location: NE England

    Posts: 4,173
    I'm Jez.

    Default

    I must say that I can't see any problem with an autotransformer here..... It's the most common solution.
    Arkless Electronics-Engineered to be better. Tel. 01670 530674 (after 1pm)

    Modded Thorens TD150, Audio Technica AT-1005 MkII, Technics EPC-300MC, Arkless Hybrid MC phono stage, Arkless passive pre, Arkless 50WPC Class A SS power amp, (or) Arkless modded Leak Stereo 20, Modded Kef Reference 105/3's
    ReVox PR99, Studer B62, Ferrograph Series 7, Tandberg TCD440, Hitachi FT-5500MkI, also FT-5500MkII
    Digital: Yamaha CDR-HD1500 (Digital Swiss army knife-CD recorder, player, hard drive, DAC and ADC in one), PC files via 24/96 sound card and SPDIF, modded Philips CD850, modded Philips CD104, modded DPA Little Bit DAC. Sennheiser HD580 cans with Arkless Headphone amp.
    Cables- free interconnects that come with CD players, mains leads from B&Q, dead kettles etc, extension leads from Tesco

  6. #6
    Join Date: Feb 2008

    Location: South Wales

    Posts: 9,151
    I'm NotTakingLifeTooSeriouslyTheseDays.

    Default

    I am happy to agree to disagree on this one, there are advantages, and disadvantages to each' depending on the situation/aplication, and the quality of the transformer in question.
    And its Christmas!
    Quote Originally Posted by Arkless Electronics View Post
    I must say that I can't see any problem with an autotransformer here..... It's the most common solution.
    "Today scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality"
    Nikola Tesla



    Its now a conspiracy theory to believe that the Immune system is capable of doing the job it was designed to do.
    A fish is only as healthy as the water its swimming in ! [Dr Robert Young]


    www.tubedistinctions.co.uk

    Matthew 5:10

  7. #7
    Join Date: Dec 2015

    Location: Alicante. Spain.

    Posts: 1,885
    I'm Adrian.

    Default

    Thanks guys - the problem is I don't know what type of transformer it is - only that it's huge and has one cable going in and one coming out terminated in a double UK socket as it's feeding two monoblocks configured at 120v for the Japanese market. The seller can't give me any concrete info on the step down - he said to either use it or wire the amps in series... scratch..
    Adey

    Sent from my Aquaris E4.5 using Tapatalk
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    Dave Slagle Autoformer Volume Controller
    Cary 805c SET amps
    Audio Note ANe-SPX speakers
    Townshend Isolda speaker cables
    Cardas Golden Presence interconnects

  8. #8
    Join Date: Jan 2009

    Location: Essex

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    I'm openingabottleofwine.

    Default

    In principle there is nothing wrong with wiring the two monoblocks in series for use on the UK mains supply, but it might invalidate your home insurance.

    One of the advantages of using monoblocks is to be able to locate each one close to the speaker it supplies. This configuration would make the series mains connection complicated.
    Barry

  9. #9
    Join Date: Feb 2013

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    I'm Grant.

    Default

    I,d be inclined to give it a bye tbh. Might just be more trouble than its worth
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  10. #10
    Join Date: Dec 2015

    Location: Alicante. Spain.

    Posts: 1,885
    I'm Adrian.

    Default

    I was thinking the same....
    Adey

    Sent from my Aquaris E4.5 using Tapatalk
    Technics SP10 mk2
    Jan Allaerts MC 1 Boron mk1 cart
    Miyajima Shilabe cart
    Hashimoto HM-X SUT
    Siggwan (gimballed not unipivot) Cocobola 12"
    Aurorasound Vida LCR Phonostage
    The Truth linestage
    Dave Slagle Autoformer Volume Controller
    Cary 805c SET amps
    Audio Note ANe-SPX speakers
    Townshend Isolda speaker cables
    Cardas Golden Presence interconnects

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