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Thread: Taket Batpure - technical questions involving gain, stepup and maths ...

  1. #21
    Join Date: Jan 2009

    Location: Essex

    Posts: 31,848
    I'm openingabottleofwine.

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    Ah understood - I was misled by your citation of my post, the first paragraph of which was in response to danilo's sarcastic comments.
    Barry

  2. #22
    montesquieu Guest

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    Back on topic .. I've acquired an interesting 3D printing template for some stands for batpures (and there's a company in Holland which can run them up at reasonable cost) ... I ended up buying a pair of stainless steel factory made ones and selling on my 'loose' one, but I'm curious now what doubling Batpures up might sound like.

    Can any of the technical boffins tell me what would be the best way to get maximum output from them - wiring in parallel (as they are at the moment with the main speaker) or in series? By parallel I mean wiring both pairs back to the amp individually, both to + or - respectively. By series I'm not quite sure what I mean (!) or even if that's possible.

    They are a 4kohm load and 70 db efficiency so I'm looking to improve the overall output/efficiency from having two pairs. The 4kohm load as it stands seems to have no impact on the amp's performance.

  3. #23
    Join Date: Oct 2012

    Location: The Black Country

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    I'm Alan.

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    Definitely wire them in parallel for max output.

    In series each would only receive half the output voltage, so only 1/4 of the available power

  4. #24
    montesquieu Guest

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    Quote Originally Posted by Firebottle View Post
    Definitely wire them in parallel for max output.

    In series each would only receive half the output voltage, so only 1/4 of the available power
    Thanks Alan.

    Would there be any impedance impact running them in parallel?

  5. #25
    Join Date: Apr 2012

    Location: N E Kent

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    I'm Geoff.

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    At 4kOhm impedance, in practise you could run as many as you wanted in parallel........... Half a dozen?
    It is impossible for anything digital to sound analogue, because it isn't analogue!

  6. #26
    montesquieu Guest

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    Cheers Alan. I might give it a go. (Two pairs I mean, not half a dozen!). Sorry for the noddy questions.

  7. #27
    Join Date: Apr 2012

    Location: N E Kent

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    I'm Geoff.

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    It was Geoff. Not Alan.

    You certainly won't hurt anything using two pairs in parallel. That'll give you a 3db increase in output.
    It is impossible for anything digital to sound analogue, because it isn't analogue!

  8. #28
    Join Date: Feb 2013

    Location: W Lothian

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    I'm Grant.

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    yup the resistance drop is negligable
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  9. #29
    montesquieu Guest

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    Quote Originally Posted by walpurgis View Post
    It was Geoff. Not Alan.

    You certainly won't hurt anything using two pairs in parallel. That'll give you a 3db increase in output.
    Whoops! Apologies.

  10. #30
    Join Date: Jan 2013

    Location: Bristol

    Posts: 6,843
    I'm Justin.

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    Quote Originally Posted by montesquieu View Post
    Whoops! Apologies.
    70DB efficient. Why is it so low anyone?

    Getting a test mic on the output of these things would be really useful - given a good enough test mic and a high sampling rate.

    I'd need to know what I was really getting before I could make any sensible judgements.

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