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Dedicated to the restoration and preservation of all original Dynaco tube audio equipment - Customer support for Tubes4hifi VTA tube amp and preamp kits and all Dynakitparts.com products


    M125 cage?

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    Sadface

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    Post by Sadface on Mon Apr 14, 2014 6:32 am

    G'day folks,

    Recently finished my pair of M125s. Beautiful amps these, plain and simple.

    Beautiful amps however require protection.

    Has anybody tried making a cage or enclosure for these at all?
    Bob Latino
    Bob Latino
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    Post by Bob Latino on Mon Apr 14, 2014 6:52 pm

    There are no ready made commercial tube cages that will fit the M-125's. If you bring one of the amp's to a metal shop and explain what you want, they can probably fabricate a pair of metal covers for the amps. As to the cost ? I can't say ?

    Bob
    sKiZo
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    Post by sKiZo on Mon Apr 14, 2014 7:17 pm

    I was thinking some heavy romex to get the shape you want, then braze heavy duty hardware screen to that. Paint it up or get it powder coated. Leave the corners long and add four holes in the chassis to keep them in place.

    Had some photoshop fun when I was building my ST120. Remember this?

    M125 cage? Dynaco-toaster





    mark four
    mark four

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    Post by mark four on Mon Apr 14, 2014 7:53 pm

     you could probably patent the british  toaster look and dynaco doctor might be able to get rid of a few of them  on his site . retro is very popular right now . if i had a st-70 instead  of a pair of mark 4's i probably would order one from you. lol! 
    peterh
    peterh

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    Post by peterh on Tue Apr 15, 2014 2:03 am

    I like this cage. And finally the power switch is on the front !
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    Guest
    Guest

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    Post by Guest on Tue Apr 15, 2014 7:25 am

    You may need to be a little more diligent with cleaning your amp. A four slot toaster will produce a lot of crumbs!
    tubes4hifi
    tubes4hifi
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    Post by tubes4hifi on Tue Apr 15, 2014 10:48 am

    I want one of those toasters for my ST70 !!  Very Happy 
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    Guest
    Guest

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    Post by Guest on Tue Apr 15, 2014 11:02 am

    will it toast bagels too???
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    Guest
    Guest

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    Post by Guest on Tue Apr 15, 2014 1:48 pm

    Depends on hot the tubes are.  Laughing 
    Boomzilla
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    Post by Boomzilla on Fri Aug 04, 2017 5:00 pm

    I think that a local shop, working in stainless sheet steel, with a laser cutter, could make some cool cages. For mine, I was considering a Fleur-de-Lis motif? Or maybe some with my name or initials?

    And if my cages are successful, might there be a larger market for them? I think I could 3-D print some "alien" cages. And in painted sheet metal, maybe some "VTA" ones?

    Glenn Young
    deepee99
    deepee99

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    Post by deepee99 on Fri Aug 04, 2017 5:10 pm

    sKiZo wrote:I was thinking some heavy romex to get the shape you want, then braze heavy duty hardware screen to that. Paint it up or get it powder coated. Leave the corners long and add four holes in the chassis to keep them in place.

    Had some photoshop fun when I was building my ST120. Remember this?

    M125 cage? Dynaco-toaster
    An absolute art-deco piece of work, as are you, Skiz.





    jfine
    jfine

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    Post by jfine on Sat Aug 05, 2017 12:29 am

    I like the M125's as is, why would you want to place a cage on it? I *need* to keep an eye on those tubes. I take off the covers on my other tube gear, runs cooler.
    Boomzilla
    Boomzilla

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    Post by Boomzilla on Sat Aug 05, 2017 5:09 am

    Th keep grandkids tender little hands away from the hot tubes.
    deepee99
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    Post by deepee99 on Sat Aug 05, 2017 2:11 pm

    Boomzilla wrote:Th keep grandkids tender little hands away from the hot tubes.
    Grandchildren can be replaced. Good tubes, not so much. Smile
    Boomzilla
    Boomzilla

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    Post by Boomzilla on Sat Aug 05, 2017 3:47 pm

    Well...  Cages that DON'T let the heat build up are easy to design also.  

    A shrouded design with a small fan would let the tubes run cooler.
    jfine
    jfine

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    Post by jfine on Sat Aug 05, 2017 9:35 pm

    I dunno, kids that are not aware of the dangers of tubes are not allowed by my stereo stuff, it's not play time by my gear anyway, accidents do happen though, like grabbing the top of a stove.
    Wotan
    Wotan

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    Post by Wotan on Tue Nov 19, 2019 10:28 am

    Didn't the original Dynaco amps, including the Mark III, Mark IV and Stereo 70, come with cages?

    Standard perforated metal is not so good--which is what the originals would have been-- for the reasons noted: heat build-up and less visibility of glowing tubes. But something that is mostly open space would be better, like an actual cage. If someone had the skills and facilities to produce these in some quantity I bet there would be plenty of takers, as long as the price wasn't insane (where insane > $1k/pair). Children and pets would be the main motivation for many, including me.

    I wouldn't go for the retro toaster look, though. I can see bringing it to a shop after a major failure and being told "your amp is toast".
    Bob Latino
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    Post by Bob Latino on Tue Nov 19, 2019 11:05 am

    M125 cage? M-125-chassis-cover

    This cover comes in either gray (shown in this photo) or black

    According to an M-125 kit builder, the Hammond 1451-29 tube cage will fit the M-125 chassis. The only problem is that the cage would have to fit with one of the solid sides of the cage on the front of the amp. You could position the amps sideways in your listening room, if you want to see the tubes ? Also > The holes on the cage will not line up with the bottom cover holes on the chassis as is found on the original Dynaco amps. What you COULD do is just place them on top of the amps and let "gravity" hold them on. Two things to think about > A tube cage is only really necessary if you have young toddlers walking in your home or you have inquisitive pets who might be attracted to the glowing tubes. Also > You would have to remove the cage to set or reset the bias (unless you have the autobias modules on your amps). Link below to more information on this item.

    Hammond 1451-29 tube cage

    Bob
    AmpedUp
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    Post by AmpedUp on Tue Nov 19, 2019 12:59 pm

    I have a good friend that makes custom Plexiglass structures. If you have a design or dimensions that you would like one make, let me know and I'll have him make one and I'll take a picture with it and one of my M-125s. He can drill or slot vents into the covers any way that you would like. Here is a link of some of the examples of what he builds. I was planning to make a cardboard template and have him build me a pair of clear PCB covers that no one seems to sell anymore. https://www.facebook.com/plexibledesign/
    Mad Dog Cycles
    Mad Dog Cycles

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    Post by Mad Dog Cycles on Thu Nov 21, 2019 3:45 pm

    AmpedUp wrote:I have a good friend that makes custom Plexiglass structures.  If you have a design or dimensions that you would like one make, let me know and I'll have him make one and I'll take a picture with it and one of my M-125s.  He can drill or slot vents into the covers any way that you would like.  Here is a link of some of the examples of what he builds.  I was planning to make a cardboard template and have him build me a pair of clear PCB covers that no one seems to sell anymore.  https://www.facebook.com/plexibledesign/

    Does he make dust covers for turntables?
    AmpedUp
    AmpedUp

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    Post by AmpedUp on Thu Nov 21, 2019 11:42 pm

    He sure could Mad Dog. If you have the dimensions I'll be happy to ask him. He would just need the Height, Length, Width, and how thick you would like the plexiglass. If you want hinges, he could put some on, but you might be better served drilling the holes and installing yourself to match your unit. I'll talk to him this weekend and mention Mad Dog Cycles so you can call/email/facebook him directly and he will know what you are talking about. The owner's name is Ken and he likes quality music himself. He also likes to create unusual shapes so you can be creative in what you want, but I imagine this makes the cost go up. Good luck...
    bluemeanies
    bluemeanies

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    Post by bluemeanies on Sun Nov 24, 2019 9:57 am

    I have handmade black covers monogrammed in blue. I rarely use them. If your interested I would sell them to you...they cost me $89.00...M125 cage? A558e010
    M125 cage? A558e010
    M125 cage? A558e010
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    stewdan

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    Post by stewdan on Sun Nov 24, 2019 12:35 pm

    Blue ... I am interested in your blue covers for the 125's. Please PM me with the price.
    Thanks,
    Stew

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