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Thread: Magna Audio's custom-made counterweight balance and armboard service!

  1. #531
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,177
    I'm Steve.

    Default

    Quote Originally Posted by Barry View Post
    What about osmium? It's the densest element at 22.6g/cm3.

    What material is used for 'tungsten' darts?
    Way, way too hard and expensive.

    "solid osmium is difficult to machine, form or work."
    Melts at over 3300deg C!

    https://en.m.wikipedia.org/wiki/Osmium
    System: Turntable : SP10 MKII slate plinth, Custom Ebony tonearm board, Arm : Fidelity Research FR64s, Cartridge : SPU Royal N. SUT : Lundahl 1:13. Phonostage : Icon Audio, Digital CD spinner, Serious USB->I2S streaming, ADC / DSP XO / Pre / 4 DAC's : WAF Najda, Poweramps : 3 x EL84 SET's, 2 x D class amps on bass channels, Speakers : 5 way front loaded horn system: 2 X Tapped sub 15" LF drivers / 2 X Exponential mid bass 15" drivers / Tractrix 200Hz mid horns with JBL2482's, / Tractrix 550Hz upper wooden horns with factory refurb'd Vitavox S2's / Raal Lazy Ribbons as high frequency tweeters. Wires: good silver or good copper where best suited. DIY RCM.

    Maker of counterweights, tonearm boards, Tannoy GRF style speaker cabinets, horn speakers and more.
    For more information about my creations and products please click below

    http://fosworld.wixsite.com/magna-audio & on Instagram https://www.instagram.com/magna_audio/

  2. #532
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,177
    I'm Steve.

    Default

    Latest armpod. Off to the Netherlands.

    This one is a 7kg heavyweight!
    Usual ebony armboard and also an ebony base this time.

    Jelco armbase fitting. The height adjustable feet have felt pads this time.

















    System: Turntable : SP10 MKII slate plinth, Custom Ebony tonearm board, Arm : Fidelity Research FR64s, Cartridge : SPU Royal N. SUT : Lundahl 1:13. Phonostage : Icon Audio, Digital CD spinner, Serious USB->I2S streaming, ADC / DSP XO / Pre / 4 DAC's : WAF Najda, Poweramps : 3 x EL84 SET's, 2 x D class amps on bass channels, Speakers : 5 way front loaded horn system: 2 X Tapped sub 15" LF drivers / 2 X Exponential mid bass 15" drivers / Tractrix 200Hz mid horns with JBL2482's, / Tractrix 550Hz upper wooden horns with factory refurb'd Vitavox S2's / Raal Lazy Ribbons as high frequency tweeters. Wires: good silver or good copper where best suited. DIY RCM.

    Maker of counterweights, tonearm boards, Tannoy GRF style speaker cabinets, horn speakers and more.
    For more information about my creations and products please click below

    http://fosworld.wixsite.com/magna-audio & on Instagram https://www.instagram.com/magna_audio/

  3. #533
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,177
    I'm Steve.

    Default

    Here's another Mikro Seiki AX-4G armboard in solid ebony.
    SME fitting with threaded inserts to take the armbase bolts.
    Bronze bush to clamp to the armboard pillar.
    It's extra thick where the armbase fits. You can't have enough lovely sounding ebony.

    Pictured here with the old metal armboard as a stand









    System: Turntable : SP10 MKII slate plinth, Custom Ebony tonearm board, Arm : Fidelity Research FR64s, Cartridge : SPU Royal N. SUT : Lundahl 1:13. Phonostage : Icon Audio, Digital CD spinner, Serious USB->I2S streaming, ADC / DSP XO / Pre / 4 DAC's : WAF Najda, Poweramps : 3 x EL84 SET's, 2 x D class amps on bass channels, Speakers : 5 way front loaded horn system: 2 X Tapped sub 15" LF drivers / 2 X Exponential mid bass 15" drivers / Tractrix 200Hz mid horns with JBL2482's, / Tractrix 550Hz upper wooden horns with factory refurb'd Vitavox S2's / Raal Lazy Ribbons as high frequency tweeters. Wires: good silver or good copper where best suited. DIY RCM.

    Maker of counterweights, tonearm boards, Tannoy GRF style speaker cabinets, horn speakers and more.
    For more information about my creations and products please click below

    http://fosworld.wixsite.com/magna-audio & on Instagram https://www.instagram.com/magna_audio/

  4. #534
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,177
    I'm Steve.

    Default

    Here's a project I've been working on.
    It involves a Technics SL-1210, ebony, lots of upgrades and fitting a SME 309 arm.

    First I wanted to test the concept of applying ebony veneer so I used my scabby old SL-1200 deck as a guinea pig.
    I use that plinth/sub-plinth and base to make the armboards and get the spindle to pivot distance right.

    I trialled glue first until I found the right one to give an excellent bond and not bleed through.

    Pictured here with the ebony armboard and 309 arm.

    I'm having to do something different with the pitch control area. Thought of an ebony surround as a first test. I might be able to do a flush veneer though.

    The veneer is just using scraps so don't judge it too hard.

    The final deck project should be something special.











    System: Turntable : SP10 MKII slate plinth, Custom Ebony tonearm board, Arm : Fidelity Research FR64s, Cartridge : SPU Royal N. SUT : Lundahl 1:13. Phonostage : Icon Audio, Digital CD spinner, Serious USB->I2S streaming, ADC / DSP XO / Pre / 4 DAC's : WAF Najda, Poweramps : 3 x EL84 SET's, 2 x D class amps on bass channels, Speakers : 5 way front loaded horn system: 2 X Tapped sub 15" LF drivers / 2 X Exponential mid bass 15" drivers / Tractrix 200Hz mid horns with JBL2482's, / Tractrix 550Hz upper wooden horns with factory refurb'd Vitavox S2's / Raal Lazy Ribbons as high frequency tweeters. Wires: good silver or good copper where best suited. DIY RCM.

    Maker of counterweights, tonearm boards, Tannoy GRF style speaker cabinets, horn speakers and more.
    For more information about my creations and products please click below

    http://fosworld.wixsite.com/magna-audio & on Instagram https://www.instagram.com/magna_audio/

  5. #535
    Join Date: Dec 2011

    Location: sussex

    Posts: 223
    I'm phil.

    Default

    It's looking bloody lovely!!!
    Technics 1200, Ian Mac bearing, rb300 AO arm analogue seduction crystal glass 6mm mat modded plinth external psu, angle audio studio pro mc virtual battery phono amp, Onix pre and mono amps, Onix CD player, Onix BWD and soap tuner. B&W dm2 speakers or super pencil 12 speakers, atlas cables, seperate mains power supply with earth spike.

  6. #536
    Join Date: Sep 2009

    Location: Derbyshire

    Posts: 7,808
    I'm Josie.

    Default

    Looking great, a vast improvement over the original which these days IMO looks great but a bit drab.

  7. #537
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,177
    I'm Steve.

    Default

    Thanks guys
    System: Turntable : SP10 MKII slate plinth, Custom Ebony tonearm board, Arm : Fidelity Research FR64s, Cartridge : SPU Royal N. SUT : Lundahl 1:13. Phonostage : Icon Audio, Digital CD spinner, Serious USB->I2S streaming, ADC / DSP XO / Pre / 4 DAC's : WAF Najda, Poweramps : 3 x EL84 SET's, 2 x D class amps on bass channels, Speakers : 5 way front loaded horn system: 2 X Tapped sub 15" LF drivers / 2 X Exponential mid bass 15" drivers / Tractrix 200Hz mid horns with JBL2482's, / Tractrix 550Hz upper wooden horns with factory refurb'd Vitavox S2's / Raal Lazy Ribbons as high frequency tweeters. Wires: good silver or good copper where best suited. DIY RCM.

    Maker of counterweights, tonearm boards, Tannoy GRF style speaker cabinets, horn speakers and more.
    For more information about my creations and products please click below

    http://fosworld.wixsite.com/magna-audio & on Instagram https://www.instagram.com/magna_audio/

  8. #538
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,177
    I'm Steve.

    Default

    Tannoy drivers have arrived for installation in the GRF-N cabinets.

    Beautifully original, straight out of the sixties. They've been in the same homemade cabinets the whole time.









    System: Turntable : SP10 MKII slate plinth, Custom Ebony tonearm board, Arm : Fidelity Research FR64s, Cartridge : SPU Royal N. SUT : Lundahl 1:13. Phonostage : Icon Audio, Digital CD spinner, Serious USB->I2S streaming, ADC / DSP XO / Pre / 4 DAC's : WAF Najda, Poweramps : 3 x EL84 SET's, 2 x D class amps on bass channels, Speakers : 5 way front loaded horn system: 2 X Tapped sub 15" LF drivers / 2 X Exponential mid bass 15" drivers / Tractrix 200Hz mid horns with JBL2482's, / Tractrix 550Hz upper wooden horns with factory refurb'd Vitavox S2's / Raal Lazy Ribbons as high frequency tweeters. Wires: good silver or good copper where best suited. DIY RCM.

    Maker of counterweights, tonearm boards, Tannoy GRF style speaker cabinets, horn speakers and more.
    For more information about my creations and products please click below

    http://fosworld.wixsite.com/magna-audio & on Instagram https://www.instagram.com/magna_audio/

  9. #539
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,177
    I'm Steve.

    Default

    Here's an ebony armboard for the Technics SL-1210 fitting a Kuzma Stogie Reference tonearm.
    The arm requires a depth below the platter of 28mm minimum!
    It's a tight fit but I did it.

    This one features the mounting system from underneath and is pictured during test mounting and finished on my now ebony veneered test plinth.












    System: Turntable : SP10 MKII slate plinth, Custom Ebony tonearm board, Arm : Fidelity Research FR64s, Cartridge : SPU Royal N. SUT : Lundahl 1:13. Phonostage : Icon Audio, Digital CD spinner, Serious USB->I2S streaming, ADC / DSP XO / Pre / 4 DAC's : WAF Najda, Poweramps : 3 x EL84 SET's, 2 x D class amps on bass channels, Speakers : 5 way front loaded horn system: 2 X Tapped sub 15" LF drivers / 2 X Exponential mid bass 15" drivers / Tractrix 200Hz mid horns with JBL2482's, / Tractrix 550Hz upper wooden horns with factory refurb'd Vitavox S2's / Raal Lazy Ribbons as high frequency tweeters. Wires: good silver or good copper where best suited. DIY RCM.

    Maker of counterweights, tonearm boards, Tannoy GRF style speaker cabinets, horn speakers and more.
    For more information about my creations and products please click below

    http://fosworld.wixsite.com/magna-audio & on Instagram https://www.instagram.com/magna_audio/

  10. #540
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,177
    I'm Steve.

    Default A bit of customer feedback for the Kuzma Stogi Reference ebony armboard

    This is one I made recently to fit a Kuzma Stogi Reference on a Technics SL-1210. It required careful sizing up and fitting
    as tolerances were tight for this arm with the low platter to plinth height.

    "Hi Steve,

    Tonearm fits perfectly; I've attached a few pictures.

    The sound is leaps and bounds ahead of my previous set up, even with a
    fairly modded 1210, I just wasn't prepared for the increase in
    soundstage and the shear clarity of vocals and every type of
    instrument!

    The armboard is a fantastic job, beautiful, rock solid and was easy to
    fit with the supplied bolts; I can't thank you enough for such
    excellent service.

    Kind regards,

    Alex"

    Pics on Alex's deck



    Last edited by Magna Audio; 16-05-2018 at 07:20.
    System: Turntable : SP10 MKII slate plinth, Custom Ebony tonearm board, Arm : Fidelity Research FR64s, Cartridge : SPU Royal N. SUT : Lundahl 1:13. Phonostage : Icon Audio, Digital CD spinner, Serious USB->I2S streaming, ADC / DSP XO / Pre / 4 DAC's : WAF Najda, Poweramps : 3 x EL84 SET's, 2 x D class amps on bass channels, Speakers : 5 way front loaded horn system: 2 X Tapped sub 15" LF drivers / 2 X Exponential mid bass 15" drivers / Tractrix 200Hz mid horns with JBL2482's, / Tractrix 550Hz upper wooden horns with factory refurb'd Vitavox S2's / Raal Lazy Ribbons as high frequency tweeters. Wires: good silver or good copper where best suited. DIY RCM.

    Maker of counterweights, tonearm boards, Tannoy GRF style speaker cabinets, horn speakers and more.
    For more information about my creations and products please click below

    http://fosworld.wixsite.com/magna-audio & on Instagram https://www.instagram.com/magna_audio/

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