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Thread: High End battery solution for the TC-7533 Bushmaster MKII

  1. #551
    Join Date: Nov 2012

    Location: Varna, BG

    Posts: 52
    I'm Petar.

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    Just for info. I found an online shop which offers the Ankaka battery. I'm not sure if it's in stock and how reliable the site is, but here is the link: http://www.freenergyshop.com/incredi...rtable-battery
    RPi2/HiFiBerryDigi+; ZyXEL NSA310; Beresford Caiman MKII; Creek Evo 2; ProAc Studio 115; BK XXLS400; MS Audio/Klotz MC5000, VD UP-LCOFC Hi-Fi

  2. #552
    Join Date: Jun 2014

    Location: South-East Asia

    Posts: 17
    I'm Mike.

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    Stanley, if the C2 is taking the power from the battery, can my custom USB cable forego the 5 volts power line (1x line of 4)....so only the data channels (3x lines of 4) come out my computer from the USB cable, further isolating any computer noise from the input cable ?
    Last edited by electroid; 06-03-2015 at 07:24.

  3. #553
    Join Date: Feb 2008

    Location: http://www.homehifi.co.uk

    Posts: 6,288

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    Quote Originally Posted by electroid View Post
    Stanley, if the C2 is taking the power from the battery, can my custom USB cable forego the 5 volts power line (1x line of 4)....so only the data channels (3x lines of 4) come out my computer from the USB cable, further isolating any computer noise from the input cable ?
    Sure. But I doubt that it will make any difference as far as noise is concerned. The 5V line on the USB cable is not connecting to anything inside the Caiman.

  4. #554
    Join Date: Jun 2014

    Location: South-East Asia

    Posts: 17
    I'm Mike.

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    Quote Originally Posted by StanleyB View Post
    Sure. But I doubt that it will make any difference as far as noise is concerned. The 5V line on the USB cable is not connecting to anything inside the Caiman.
    Great.
    I tried searching google images for your C2 USB rear connection photo ...is it standard Type 1 Male USB (rectangular) or Type 2 male USB (squarish usually reserved for printer
    connectors).


  5. #555
    Join Date: Feb 2008

    Location: http://www.homehifi.co.uk

    Posts: 6,288

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    It is the original USB B type socket. See http://www.usb.org/home for the number of pins and connection method of the various USB plugs and sockets.

  6. #556
    Join Date: Feb 2010

    Location: Moved to frozen north, beyond Inverness

    Posts: 2,602
    I'm Dave.

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    Just looking at the amazon page for anker batteries. There are a whole bunch of them - http://www.amazon.co.uk/s/ref=nb_sb_...ix=anker%2Caps Is it really necessary to spend as much as £50 to get acceptable/good results?

    There was another battery which was mentioned a while back in this thread, with solar panels, but it had multiple outputs, and IIRC some were quite high voltage. The idea of having a battery which could be inadvertently switched to a high voltage to fry the equipment scares me, so if I go this way at all I'll look for a battery which can't deliver more than the max voltage for any of the connected kit. I think that battery was this one - http://www.amazon.co.uk/exec/obidos/...uct_refresh_T1 by Poweradd.
    Dave

  7. #557
    Join Date: Jul 2014

    Location: Hertfordshire

    Posts: 431
    I'm Graeme.

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    Quote Originally Posted by dave2010 View Post
    Just looking at the amazon page for anker batteries. There are a whole bunch of them - http://www.amazon.co.uk/s/ref=nb_sb_...ix=anker%2Caps Is it really necessary to spend as much as £50 to get acceptable/good results?

    There was another battery which was mentioned a while back in this thread, with solar panels, but it had multiple outputs, and IIRC some were quite high voltage. The idea of having a battery which could be inadvertently switched to a high voltage to fry the equipment scares me, so if I go this way at all I'll look for a battery which can't deliver more than the max voltage for any of the connected kit. I think that battery was this one - http://www.amazon.co.uk/exec/obidos/...uct_refresh_T1 by Poweradd.

    Hi Dave,

    This is the battery that I have:
    http://www.amazon.co.uk/20000mAh-Mul...keywords=anker

    It's true it is £49.99 from Amazon, but note also that the list price they show is £119.99 so quite a reduction. Loads of people are using this battery and is is proven to work.

  8. #558
    Join Date: Jul 2013

    Location: Poland

    Posts: 213
    I'm Krzysztof.

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    For your information, very interesting article about the noise from regulators and battery power to see what kind of levels we should expect. Quite old, but I think still adequate: http://www.tnt-audio.com/clinica/reg..._noise4_e.html

  9. #559
    Join Date: Oct 2008

    Location: Aughton, Ormskirk

    Posts: 2,848
    I'm Jerry.

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    I use an LED bulb to stop the problem of my Anker battery cutting off power to the Bushmaster 2 but the grain of wheat bulbs burn out quickly. I was thinking of fitting a resistor instead. I presume a 12v one, say 0.3w would be ok?
    Stan-any modifications for the BM2 or did it just get superceded by the Caiman 2?
    Jerry
    Hifi: IPL transmission line floorstanding speakers, Squeezebox Touch, Denafrips Ares 11 DAC, DCB1 Pre-amplifier, Croft Series 7 power amp.
    Custom Hifi cables HA10SE headphone amplifier and Hifiman HE-400 headphones.
    AV system: LG 55B7, Denon AVR -x2300w receiver, Quad 12L (front) 11c Centre and 11L rear . Velodyne DD15 subwoofer.

  10. #560
    Join Date: Feb 2008

    Location: http://www.homehifi.co.uk

    Posts: 6,288

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    Quote Originally Posted by Covenant View Post
    I use an LED bulb to stop the problem of my Anker battery cutting off power to the Bushmaster 2 but the grain of wheat bulbs burn out quickly. I was thinking of fitting a resistor instead. I presume a 12v one, say 0.3w would be ok?
    Stan-any modifications for the BM2 or did it just get superceded by the Caiman 2?
    Two bulbs in series should last a lot longer. I haven't got one of those batteries so I can't paly about with one and determine component values such as the value of a suitable resistor. But I'll play about and see.

    As for upgrades to the BMI and II: I am trying to wrap up another project that I have had to put aside a few years ago when my eye sight started to fail. But now that I had two operations to restore things to "normal" I want to get some of these old projects completed before the end of summer. But I am working on a few BM related mods. I even had to buy a BMI back from someone so that I had one to play with!

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