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  1. #1
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    My DIY speakers -"J&N"

    The idea of hand-made/ DIY / loudspeakers was born in me, when I saw the model of JBL-tI6K . The design and fabrication of these unique shapes are made by a Danish designer. The pyramidal shape of the speakers is generally denied by the DIYers, or at least for the most part, but I decided at the moment that's my loudspeaker design..
    If there is interest in the topic, I will continue.

  2. #2
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    Re: My DIY speakers -"J&N"

    Pretty cool looking speakers. Nice job!
    McIntosh C49, MR85, MC7100W, R778 | T+A DAC 8 DSD | KEF LS50 Meta w/S2, KC62 (x2) | Rega RP8, Ania Pro, NEO PSU | Technics SL-1500C | Audio Technica VM740ML | Hexmat Eclipse, Yellow Bird, Molekula, Molekula Mini | Pro-Ject VC-E | Falcon NW PC Server (Roon Core & HQPlayer) | Microsoft Surface Pro 6 (Roon Controller) | Abyss Diana Phi | Astell&Kern SE200 | Oppo BDP105

    “One of the great challenges in life is knowing enough to think you're right but not enough to know you're wrong”
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  3. #3
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    Re: My DIY speakers -"J&N"

    Very nice, they look like cousins to the Joseph Audio design !
    Cheers ! …. Dave

  4. #4
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    Re: My DIY speakers -"J&N"

    Fantastic job. Curves will test all of your skills and patience. Wish we could hear them.
    Synology 1019D+ - SGC Sonictransporter I9 w Roon/HQ Player- UltraRendu- PBD Stream IF to Playback Designs MPS5 via fiber optic - ARC 40th Anniversary Pre - ARC 610 T's - Martin Logan CLX's - 4 Martin Logan Depth i Subs - Shunyata Hydra, DIY PCOCC interconnects, speaker cables and power cords with Furutech terminations. Blue Jeans CAT 6's. Acoustically treated room with one permanent chair.

  5. #5

    Re: My DIY speakers -"J&N"

    Very nice! Can you give us details on the drivers, crossovers and cabinet volume/design? How efficient are they and what kind of load are they?

  6. #6
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    Re: My DIY speakers -"J&N"

    Quote Originally Posted by Randy Myers View Post
    Pretty cool looking speakers. Nice job!
    Thanks!

  7. #7
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    Re: My DIY speakers -"J&N"

    Quote Originally Posted by Mikado463 View Post
    Very nice, they look like cousins to the Joseph Audio design !
    Thanks, Dave, but they are Jorors - Audio and they are not family connection-related.
    Joro

  8. #8
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    Re: My DIY speakers -"J&N"

    Quote Originally Posted by brad225 View Post
    Fantastic job....
    Thank you!
    Quote Originally Posted by brad225 View Post
    Wish we could hear them.
    Mission impossible, or very difficult!

  9. #9
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    Re: My DIY speakers -"J&N"

    Quote Originally Posted by stereogeek View Post
    Very nice! Can you give us details on the drivers, crossovers and cabinet volume/design? How efficient are they and what kind of load are they?
    I started working with them in 2009 and finished in 2012.
    The loudspeakers are "SEAS"- Excel / Tw-1”, Mw-5”for center 2х 5.5”,Bass-8,5”/ and cross-over parts- "Intertechnik".

    Nominal impedance- 8 Ohm. Range 30Hz-25kHz.Characterstic Sensitivity(2,83V/1m)- 87db.
    Long Term-110W.

    I'll show you, how was made the speakers are made, step by step.
    Joro

    P.S.
    For those who are most impatient on Facebook; Jorors DIY-Audio, it is not a link, but a closed group.
    Anyone who wants to become a member is welcome, but you have to make a request to me!

  10. #10
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    Re: My DIY speakers -"J&N"

    They are gorgeous! Love the shape!
    George
    -----------------------

    Aurender ACS10 Music Server > Holo Audio May KTE R2R Ladder DAC > Pass Labs XP-30 Preamp > Pass Labs XA160.5 Class A Mono Blocks > Martin Logan Renaissance ELS 15A Speakers

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  11. #11
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    Re: My DIY speakers -"J&N"

    Gorgeous speakers and hand work.
    -----------------
    Brian

    Main System -
    Rotel RCD-1572 / Rega P3 > Luxman 505UX Mark II > Fyne Audio F502SPs > Synergistic Cables

    Secondary - OPPO 93 > VAC CLA 1 MKII Pre > Odyssey Stratos > Dynaudio Audience 82s > Tara Labs Cables


  12. #12
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    Re: My DIY speakers -"J&N"

    Thank you, George!
    Thank you, Brian!

  13. #13
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    Re: My DIY speakers -"J&N"

    When everything is created by your hands, the pleasure is endless!
    I wish everyone DIYer, to be able to experience such emotional moments!

  14. #14
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    Re: My DIY speakers -"J&N"

    Quote Originally Posted by stereogeek View Post
    Very nice! Can you give us details on the drivers, crossovers and cabinet volume/design? How efficient are they and what kind of load are they?
    Thanks!
    I'll show you, how I made these speakers, supported with photos and with detailed information as possible. This project is a long time ago and some of the stages during their construction , I can not show them - I do not have the necessary material, but what is available, I suppose will be enough to provoke your interest.
    At first, I had to figure out how to bend MDF plates. In the internet now has a very detailed material on how this process is being carried out with complicated multi-operative press mashine, but 2009 this information was scarce and irrelevant to me because, its clear I can not make a similar device at home.
    For this purpose, I made this "Home Matrix" for the center and front speakers;


  15. #15
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    Re: My DIY speakers -"J&N"

    afd;p

  16. #16
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    Re: My DIY speakers -"J&N"

    I have no opportunity to publish photos from my computer. The administrator told me that I can, but I can't, but the administrator told me that I can, but I can't ........
    P.S.
    I have registered in over 15 DIY Loudspeakers Forums worldwide and in these forums I have many published photos from my computer, why in this forum things do not work?

  17. #17
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    Re: My DIY speakers -"J&N"

    My initial idea was, for a bass speaker 6.5 ", but once I assembled the pilot model and measured the internal volume of the cabinet, found that I had enough reserve even for a 10" speaker. I decided at this stage to use 8.5 ".
    This is the first option;
    Attached Images Attached Images

  18. #18
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    Re: My DIY speakers -"J&N"

    The final decision;
    "SEAS" - Excel / Tw-1 ", Mw-5" for center 2x 5.5 ", Bass-8.5" / and cross-over parts- Intertechnik. Nominal impedance- 8 Ohm. Frequency Range 30Hz-20kHz.Characterstic Sensitivity (2.83V / 1m) - 87db Long Term-110W.
    Attached Images Attached Images

  19. #19
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    Re: My DIY speakers -"J&N"

    The veneer I use in Bulgaria is known as "Birds of Maple", in the world is also known as "Bird's eye" . We reach the moment of very specific activity - veneering with natural veneer. When veneering panels, details is in one plane, there are no problems. There is only a requirement - the person who collects the individual pieces has good skills, the rest is completed by the pneumatic press.
    When we talk about a complex shape, our immediate association is for "Vacuum press", but there is a limit to the thickness / height / of the workpiece. If we are talking about veneering of a flat surface with motifs on the surface - it does work, but if it is another massive form- don’t.
    Due to the complexity of the process, i will pay close attention to it. My technique is complex, risky on a large scale and I definitely do not recommend it to enthusiasts with little experience! A natural veneer can bend tangentially or radially, usually masters prefer to work in just one direction - for less headaches. In my method of processing, I use both bending directions simultaneously, but add a third diagonal bending.
    The other main problem is the adhesive with which it sticks the veneer, it is polychloroprene, this glue does not allow you to move the veneer, once touched to the base there is no other chance-stays there. If you try to move it, you will break the veneer at the moment, and when we talk about "Birds of Maple" with a price over 60 EUR, the feeling it's not pleasant!
    I will explain my technique for cutting veneer before gluing it.
    On the finished cabinet of the loudspeaker, from " India paper" / she is the closest with the veneer / I make the templates that should lie perfectly on the base. The problem is in the wrong shape, the veneer after gluing in one part, changes his shape, although everything has previously been matched perfectly. It requires a lot of attention, patience, and proper judgment, which part should squeeze, otherwise balloon spaces are created, which are very difficult to correct without being visible later. Sometimes, depending on the type of veneer, moistening helps, but this action also requires judgment with experience.
    Attached Images Attached Images

  20. #20
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    Re: My DIY speakers -"J&N"

    After veneering the next steps are, to make the desired color , and the following finish manipulation , spraying with high quality automobile acrylic lacquer. To obtain the desired gloss, after about the tenth layer, the surface after each new one subsequent layer (total about 20-25) is polished, the result is this end product;
    Attached Images Attached Images
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    • File Type: jpg 5.jpg (81.9 KB, 218 views)
    • File Type: jpg 3.jpg (89.0 KB, 218 views)
    • File Type: jpg 4.jpg (77.3 KB, 217 views)

  21. #21
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    Re: My DIY speakers -"J&N"

    When everything is created by your hands, the pleasure is endless!
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    • File Type: jpg 1.jpg (186.7 KB, 199 views)

  22. #22
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    Re: My DIY speakers -"J&N"

    nice looking, we build ours in house as well for our clients, i agree, very satisfying. what our your driving the seas with? how they sound?

  23. #23
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    Re: My DIY speakers -"J&N"

    Quote Originally Posted by Porsche View Post
    nice looking,........ what our your driving the seas with? how they sound?
    Thanks, Porsche!
    It is possible with this graphic to get an idea of the sound;
    OPPO 105D; HEGEL360; Denon AVC X8500HA
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    • File Type: jpeg 1.jpeg (116.5 KB, 185 views)

  24. #24
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    Re: My DIY speakers -"J&N"

    I will show you one of my projects I had to change it , basically right at the very beginning - Rear speakers -”J&N”sr.
    We all know, what is the ideal shape for the speakers- sphere. For technological reasons, it is difficult to do, especially with three tape loudspeakers. I strive to make the second most effective form - the egg. To begin with, I schematically design this way.I calculate the approximate volume, how do I find the right volume, will show you later in my project .
    The loudspeakers are "SEAS"- Excel T25CF002 ", W18EX001- 6,5" . Everything is handmade, no "CNC" machine is used.
    First option;
    Attached Images Attached Images

  25. #25
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    Re: My DIY speakers -"J&N"

    Тhe internal structure of the cabinets;
    Attached Images Attached Images

  26. #26
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    Re: My DIY speakers -"J&N"

    A few elements from the front panel processing;
    Attached Images Attached Images

  27. #27
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    Re: My DIY speakers -"J&N"

    For the next stage / the shells of the cabinets / I made this "home matrix", with its help I bent 8 layers with 4 mm beech plywood;
    Attached Images Attached Images

  28. #28
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    Re: My DIY speakers -"J&N"

    Very impressive build! They look gorgeous and I bet sound great.
    Main: SGC SonicTransporter i9 Optical, Sonore Signature Rendu SE, Denafrips Gaia, Denafrips Terminator Plus, DIY Preamp, DIY 300B PSET Monoblocks, Pass XA60.8 , DIY GR Research Line Force with dual 3-stack servo subs, PS Audio Power Plant 3, AQ Diamond USB, Tubulus Argentus i2s, Iconoclast 4x4 UPOCC XLR, DH Labs Red Wave and Power Plus PCs, Kimber Select KS-3035 speaker cable

    2nd: Auralic Vega G2, DIY Purifi amp, GR-Research NX-Studio speakers.

    HT: Marantz AV8802a, Sunfire Theater Grand, Revel Performa F50/C50, Epson 5050, Stewart 92" Firehawk G4

    Extra: Schiit Yggdrasil A2, DIY FirstWatt F5 Turbo monoblocks, DIY Neurochrome Mod-286 monoblocks, DIY Purifi monoblocks, DIY Preamp. Revel F30, Totem Mani-2.

  29. #29
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    Re: My DIY speakers -"J&N"

    Have to congratulate the OP. His design & woodworking skills are considerable.
    That is an exceptional build.
    Just a mid Fi guy -

    Updated APT Holman pre & Onkyo Integra M506RS electronics. Optonica RP3636 TT w Sumiko Talisman Virtuoso DTI & Blackbird carts, Sony DVP-S7700 CD player, Upgraded Vandersteen 2CI, Tekton Impact & Lore S speakers. Home made wires & cables and it all works for me.

  30. #30
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    Re: My DIY speakers -"J&N"

    I've gotta say it again.......... Wow !!

    My hats off and I bow before you, superb work !!
    Cheers ! …. Dave

  31. #31
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    Re: My DIY speakers -"J&N"

    Quote Originally Posted by JayT View Post
    Very impressive build! They look gorgeous and I bet sound great.
    Thanks, JayT !

  32. #32
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    Re: My DIY speakers -"J&N"

    Quote Originally Posted by BobInWI View Post
    Have to congratulate the OP. His design & woodworking skills are considerable.
    That is an exceptional build.
    Thanks a lot, BobInWI !

  33. #33
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    Re: My DIY speakers -"J&N"

    Quote Originally Posted by Mikado463 View Post
    I've gotta say it again.......... Wow !!

    My hats off and I bow before you, superb work !!
    Thank you for your evaluation of my work, Mikado463!

  34. #34
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    Re: My DIY speakers -"J&N"

    I am approaching to the measurement of the internal volume. From waste material I made this gadget ,that takes part in the measurements and when assembling the cabinet;
    Attached Images Attached Images

  35. #35
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    Re: My DIY speakers -"J&N"

    - My method of finding an internal volume of a complex construction was discovered about 2500/ from the Archimedes genius/.
    The volume per liter of water is equal to the volume of 1 kg. and 1l. Water = 1 kg,
    -their specific resistances are the same, with very little error.
    I will say it in a more understandable way:
    - if we have 20 liters of water in a bucket, this bucket will weigh approximately -20 kg.
    - if we have another liquid in this bucket, we may have 20 liters, but we will not have 20 kg.
    In my method of measurement, i do not immerse the inner construction in the water, just I measure the weight and deduct it from the total volume.
    There is no simpler and more accurate method for finding the volume of a complex body,
    Archimedes method is flawless!
    In my method of measurement, i do not immerse the inner construction in the water, just I measure the weight and deduct it from the total volume.
    There is no simpler and more accurate method for finding the volume of a complex body,the method of Archimedes is flawless!
    Any other material we use to fill, we need to know the "ro" of this material.
    On the second picture, the red line is the waterline, the vas of cabinet must be fill with water next to it / everything must be perfectly horizontally!/.

    In this photo the red line is the waterline, the vas of cabinet must be fill with water next to it / everything must be perfectly leveled/.
    Attached Images Attached Images

  36. #36
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    Re: My DIY speakers -"J&N"

    Let's assume that the density of MDF is 0.75 kg. of cubic decimeter/ average value by tables /. This is 75% of the actual reduced volume. The reduced volume error is: 3.5 / 0.75 = 4.6 liters actual reduced volume, and the whole volume is 43-4.6 = 38.4 liters. The total error of 39.6 liters is 1.2 liters or -3.1%.The ways to reduce the insaid of volume, are incomparably easier than the increase, the point is that this is the desired vision and the compensation must be done inside the volume. At this volume, I can safely mount another W18EX001, i. we are talking about a 2, 1/2 tape loudspeaker and that sends the project into an initial phase.
    The old project stayed in the past ...
    The new one project;
    Attached Images Attached Images

  37. #37
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    Re: My DIY speakers -"J&N"

    interesting, thanks for sharing

  38. #38
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    Re: My DIY speakers -"J&N"

    The pleasure is incomparable, when everything is created by your hands!
    Christmas mood;
    Attached Images Attached Images

  39. #39
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    Re: My DIY speakers -"J&N"

    After preprocessing of the internal ribbing I can now start collecting the cabinets;
    Now I can make the exact measurement of the volume.
    And that's 31.5l, just as much as I need! Further processing of the internal ribs follows;
    Attached Images Attached Images

  40. #40
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    Re: My DIY speakers -"J&N"

    Housing assembly;
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    • File Type: jpg 1.jpg (123.8 KB, 61 views)
    • File Type: jpg 2.jpg (125.3 KB, 61 views)
    • File Type: jpg 3.jpg (100.8 KB, 61 views)

  41. #41
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    Re: My DIY speakers -"J&N"

    Oh, i forgot to show you what I make for the filter compartment!
    Attached Images Attached Images
    • File Type: jpg 1.jpg (51.7 KB, 63 views)
    • File Type: jpg 2.jpg (94.5 KB, 62 views)
    • File Type: jpg 3.jpg (104.9 KB, 63 views)

  42. #42
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    Re: My DIY speakers -"J&N"

    After the measurements, this is are Technical data:
    2½- way surround loudspeakers,
    Frequence Range; 33-25000 Hz
    Long term Max Power; 200 W
    Crossover Frequency; 2800 Hz
    Impedance; 4 Ohms
    Sensitivity; 90 db SPL
    Cabinet Volume; 31l
    Gross weight / without stand /; 27kg.
    This is the project of the rear speakers, will finish it with "Bird's eye view".
    Attached Images Attached Images

  43. #43
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    Re: My DIY speakers -"J&N"

    how do you like the seas, i am considering a design using there drivers
    Burmester 911mk3 amplifier
    Burmester 077 pre-amp
    Burmester 151mk2 streamer
    Burmester 948 conditioner
    Master Artist Full Range Towers
    Espirit Lumina cables
    Solid Tech ROS stand

  44. #44
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    Re: My DIY speakers -"J&N"

    Quote Originally Posted by Porsche View Post
    how do you like the seas, i am considering a design using there drivers
    I know in detail the production of SEAS, these are very good drivers that allow the construction of projects with loudspeakers above the HI-FI mid-range. I have measured over 40 from the same products, there is no difference in their technical characteristics - fact!
    P.S.
    My last purchase of SEAS speakers was about six years ago, in a Bulgarian "DIY-Audio" forum, at this point in time, a very competent member of the forum shared that the Norwegians have started to compromise on quality, keep it in mind please!

  45. #45
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    Re: My DIY speakers -"J&N"

    oh, really, thats interesting. thanks
    Burmester 911mk3 amplifier
    Burmester 077 pre-amp
    Burmester 151mk2 streamer
    Burmester 948 conditioner
    Master Artist Full Range Towers
    Espirit Lumina cables
    Solid Tech ROS stand

  46. #46
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    Re: My DIY speakers -"J&N"

    Quote Originally Posted by Porsche View Post
    oh, really, thats interesting. thanks
    You are welcome, during this time there is a change in the design of the labels that stick on the magnet on of drivers, always such changes made for me suspicious!

  47. #47
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    Re: My DIY speakers -"J&N"

    Hello ,

    Really lovely work , could you inform as to how you made your measurements what you posted was pretty vague ..


    Regards
    * An Audiophile is only as old as his tweeters ..!!

  48. #48
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    Re: My DIY speakers -"J&N"

    Quote Originally Posted by jororaitchev View Post
    You are welcome, during this time there is a change in the design of the labels that stick on the magnet on of drivers, always such changes made for me suspicious!
    Sad to hear as SEA’s used to be really good stuff ..!
    * An Audiophile is only as old as his tweeters ..!!

  49. #49
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    Re: My DIY speakers -"J&N"

    Quote Originally Posted by a.wayne View Post
    Sad to hear as SEA’s used to be really good stuff ..!
    It was hard for me to take it in too, but my source is very, very into things, I can send you his personal blog if you want.

  50. #50
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    Re: My DIY speakers -"J&N"

    making some changes doesn't make them bad, be curious what the "changes" are
    Burmester 911mk3 amplifier
    Burmester 077 pre-amp
    Burmester 151mk2 streamer
    Burmester 948 conditioner
    Master Artist Full Range Towers
    Espirit Lumina cables
    Solid Tech ROS stand

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Audioshark is a community of like minded individuals. Audioshark welcomes participation from all manufacturers and owners of all brands and products. It is our belief that online forums provide a community of like minded audiophiles and music lovers to encourage the growth of this wonderful hobby.

Sincerely,
The Audioshark.org Team

My DIY speakers -"J&N"

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