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

  1. #581
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,332
    I'm Steve.

    Default

    The Tannoy GRF replica cabs all finished and under test.
    As always 24 & 21mm birch plywood used throughout.
    These feature the tear drop baffle and are bi-wired for true active amping, should the fancy take the new owner.











    A short sound clip can be heard in my Insta account.
    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. #582
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,332
    I'm Steve.

    Default

    A little update on a Reed armboard I made a while ago.

    Here it is mounted on the customer's deck.
    It's nice to see where they end up





    Last edited by Magna Audio; 15-09-2019 at 08:12.
    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. #583
    Join Date: May 2012

    Location: Dagenham Essex

    Posts: 9,653
    I'm I'mteachingmarcotheartofpishanto.

    Default

    Your work looks lovely , did the customer really use pozi drive pan head screws , or am I seeing something incorectly with my old eyes
    Music , fills the gaps between silence !

    TAT Sale post Leader " Marcos Mentor "

    Also a pishanto specialist confirmed by Head Daftee

    Real name " Allen " or "Zoomer Nut”, “Numpty Napper”.

    ±± KEEP IT REEL

  4. #584
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,332
    I'm Steve.

    Default

    Latest solid ebony one piece armboard for Technics SL-1210.
    This one finished in high gloss lacquer.

    From block, turning, test mounting to finished article.

















    Sent from my Pixel XL using Tapatalk
    Last edited by Magna Audio; 24-09-2019 at 17:00.
    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. #585
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,332
    I'm Steve.

    Default

    Replacement Stainless Steel anti skate weights 5g and 3g and mounting rod for the mighty Fidelity Research FR64s classic Tonearm.
    I've been commissioned to make the whole anti skate assembly so more crafting to come.





    Sent from my Pixel XL using Tapatalk
    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. #586
    Join Date: May 2012

    Location: Dagenham Essex

    Posts: 9,653
    I'm I'mteachingmarcotheartofpishanto.

    Default

    Hi Steve

    Would you mind showing us your machines used to make these lovely items , Looks like you use a metalworing lathe to do woodturning ?

    Any milling machine ? and other goodies
    Music , fills the gaps between silence !

    TAT Sale post Leader " Marcos Mentor "

    Also a pishanto specialist confirmed by Head Daftee

    Real name " Allen " or "Zoomer Nut”, “Numpty Napper”.

    ±± KEEP IT REEL

  7. #587
    Join Date: Nov 2018

    Location: Grimsby

    Posts: 228
    I'm David.

    Default

    Can only agree with Al, lovely work, and pleased you keep giving us glimpses of your craftmanship.

  8. #588
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,332
    I'm Steve.

    Default

    Hehe
    Thanks for the interest.

    The lathe I do the machining of ebony and African Blackwood armboard on is indeed a metalworking lathe.
    I use Tungsten Carbide indexed cutting tools.
    The lathe is a 1940s Southbend all the way from Indiana USA.
    Shipped over here no doubt dodged some U-boats as part of the machinery the USA could send us, but not actual weapons before they came into the conflict..

    Anyway, it's a 9" swing and does a nice job.

    I have a smaller precision lathe from Warco for smaller parts like the stainless steel counterweights, anti skate weights etc.
    That's great because it has electronic variable speed from very slow with good torque to 2750rpm, and goes on reverse too.

    I fit attachments to the lathes for milling. I don't actually do much of that though..

    Both lathes are set up with the lead screw to cut 16 Threads Per Inch required for the Vitavox screw on adapter rings. I make a fair few of those..
    Last edited by Magna Audio; 01-10-2019 at 15:56.
    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. #589
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,332
    I'm Steve.

    Default

    Here's more progress on the Fidelity Research FR64s anti skate assembly I was asked to make.

    I have turned the rotational cylinder, had 4 drillings and made the counterbalance cone.
    Trial assembled so far as I have to wait for the rare threaded bolt (an old bicycle spoke thread I cannot cut) needed to attach it to the arm.
    Once I've got that I can do the final machining, clean up/polish and test it on the arm.

    Labour of love..

    Test assembled





    Turning the small counterbalance cone.

    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. #590
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,332
    I'm Steve.

    Default

    The high gloss Technics SL-1210 ebony armboard test mounted with Jelco armbase, on my ebony veneered test deck. Off to customer soon.







    Sent from my Pixel XL using Tapatalk
    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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