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

  1. #731
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,855
    I'm Steve.

    Default

    A couple of ebony armboards.

    Firstly for a Voyd 3 mounting hole board.
    Replaces a very thin and tinny metal plate one, drilled for 2 arms (sort of) - lovely sounding and looking ebony instead

    SME mounting with blind nuts set in for easy arm attachment.









    This one is off to Denmark.

    Next an ebony disc that mounts on a tonearm plinth tower, via the 3 flush / sunk caphead bolts.



    Staying in the UK for this one.
    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, Streaming RPi/Kali reclocker -> I2S -> DSP XO / Pre / 4 DAC's : WAF Najda, 5 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 tonearm boards, armpods, Tannoy GRF style speaker cabinets, horn speakers, counterweights 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. #732
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,855
    I'm Steve.

    Default

    Several orders for Tannoy GRF style cabinets have come in!

    Here's a regular rectangular cabinet in the making.

    These will take a pair of 15" HPD eight mounting hole drivers.

    Made from 24mm (all external panels) and 21mm premium faced dense birch plywood.

    Panels for one cabinet, cut, machined and sanded to finished level.





    Build underway



    Driver mounting plate and inner baffle in.



    Teardrop baffle creation.



    Felt fitted and sides on



    Close ups of fit and panel alignment





    Base on



    Top on and rear panel trial fitted.
    Pound coin in bottom right corner shows the scale



    Next up, 2nd cab build.
    Then onto plinths, removable rear panel fixings etc.
    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, Streaming RPi/Kali reclocker -> I2S -> DSP XO / Pre / 4 DAC's : WAF Najda, 5 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 tonearm boards, armpods, Tannoy GRF style speaker cabinets, horn speakers, counterweights 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. #733
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,855
    I'm Steve.

    Default

    Here is the Thorens td-125 solid ebony armboard I made a while ago.
    Residing in canada with a very nice linear tracking arm
    That's 3 of these armboards all in use on this customers 3 TD-125s, for various tonearms.
    Ebony does the business.


    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, Streaming RPi/Kali reclocker -> I2S -> DSP XO / Pre / 4 DAC's : WAF Najda, 5 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 tonearm boards, armpods, Tannoy GRF style speaker cabinets, horn speakers, counterweights 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. #734
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,855
    I'm Steve.

    Default

    I had a request for 5 x 100g counterweights to fit and match the mighty Fidelity Research FR64s / FR66s tonearm.

    Here they are





    Plenty of mass flexibility

    Sent off to Singapore.
    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, Streaming RPi/Kali reclocker -> I2S -> DSP XO / Pre / 4 DAC's : WAF Najda, 5 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 tonearm boards, armpods, Tannoy GRF style speaker cabinets, horn speakers, counterweights 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. #735
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,855
    I'm Steve.

    Default

    Some more small stainless steel turning projects.

    1st up a lateral weight and carrier rod for a Sansui 929 deck / arm.
    Nice piece of kit that deck and arm







    Off to Italy with this one.

    Then a lighter of the two Anti-skate weights for the mighty Fidelity Research FR64s tonearm



    UK for this one.
    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, Streaming RPi/Kali reclocker -> I2S -> DSP XO / Pre / 4 DAC's : WAF Najda, 5 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 tonearm boards, armpods, Tannoy GRF style speaker cabinets, horn speakers, counterweights 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/

  6. #736
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,855
    I'm Steve.

    Default

    This time it's a solid one piece ebony armboard for a Technics SL-1210 GR deck.
    A Linn fitting for both a Supatrac Blackbird sideways unipivot (interesting new arm) and a Syrinx tonearm.

    The benefits of ebony over other materials are well reported of course.

    Last edited by Magna Audio; 02-04-2023 at 12:22.
    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, Streaming RPi/Kali reclocker -> I2S -> DSP XO / Pre / 4 DAC's : WAF Najda, 5 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 tonearm boards, armpods, Tannoy GRF style speaker cabinets, horn speakers, counterweights 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/

  7. #737
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,855
    I'm Steve.

    Default

    Progress on the big Tannoy GRF replica cabinets.
    These are made of 24mm thick premium birch plywood.
    The 21mm supply that I'd used previously for the sides and back has dried up completely..

    These are extra heavy of course.

    The customer came down with the drivers and Mainly Tannoy new crossovers (very nice).

    Also a custom grille and plinth solution. More about those later.

    The cabs will now be finished, plinthed, etc.





    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, Streaming RPi/Kali reclocker -> I2S -> DSP XO / Pre / 4 DAC's : WAF Najda, 5 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 tonearm boards, armpods, Tannoy GRF style speaker cabinets, horn speakers, counterweights 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. #738
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,855
    I'm Steve.

    Default

    Here is the customer's Technics SL-1200GR with the solid Ebony armboard I handcrafted, fitted and sporting the amazing Supatrac Blackbird tonearm.





    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, Streaming RPi/Kali reclocker -> I2S -> DSP XO / Pre / 4 DAC's : WAF Najda, 5 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 tonearm boards, armpods, Tannoy GRF style speaker cabinets, horn speakers, counterweights 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. #739
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,855
    I'm Steve.

    Default

    A couple of hi-end deck ebony armboards now.
    Same customer.

    1st one TW Acustic.



    2nd one for a Micro Seiki. This is the AX-4G format for 12" arms.





    Clamped on my test mount pillar.

    Off to Canada for these two.
    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, Streaming RPi/Kali reclocker -> I2S -> DSP XO / Pre / 4 DAC's : WAF Najda, 5 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 tonearm boards, armpods, Tannoy GRF style speaker cabinets, horn speakers, counterweights 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. #740
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,855
    I'm Steve.

    Default

    The Tannoy GRF style cabinets for the HPD 385 drivers, I made have been finished and collected.
    The owner is very happy with them.

    He requested a different plinth arrangement octagonal, a large spike in each corner (something he already had, and liked the look), showing infront of the plinth corners.
    Instead of half or long grilles an American made round mesh grille that fits snugly on a pressed flange that I fitted onto the front of the drivers.
    The usual Tannoy front foam rubbers after easily removed.
    A thinner strip of foam rubber was applied between each surface and the 8 bolts hold it all together.

    Here are some pics.

    Background removed digitally



    Close up of the badges



    Demo in the workshop



    Backs



    Spikes



    A nice project all in 24mm birch plywood. They were very solid and heavy!
    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, Streaming RPi/Kali reclocker -> I2S -> DSP XO / Pre / 4 DAC's : WAF Najda, 5 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 tonearm boards, armpods, Tannoy GRF style speaker cabinets, horn speakers, counterweights 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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