The Dynaco Tube Audio Forum

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


    How should I punch 3" by 3" holes in the original ST-70 cage for additional ventilation?

    Share
    avatar
    bluemeanies

    Posts : 260
    Join date : 2015-02-09
    Age : 68
    Location : Folsom Pa.

    Re: How should I punch 3" by 3" holes in the original ST-70 cage for additional ventilation?

    Post by bluemeanies on Fri Jul 13, 2018 9:09 am

    So reading about heat being contained in a small area I have some concern although I am not sure my concern comes from reading these posts rather than the issue itself. I have an external 2tube dac with 2" of clearance from the top of the dac to the shelf above it. All my shelves are open, meaning there are no front, Back, on sides. Heat to the touch does not exists,however it is warm which is natural an is how I would describe it...warm not HOT.
    With my description do you think a fan is necessary?
    After reading this I am not sure.
    avatar
    corndog71

    Posts : 673
    Join date : 2013-03-19
    Location : It can get windy here

    Re: How should I punch 3" by 3" holes in the original ST-70 cage for additional ventilation?

    Post by corndog71 on Fri Jul 13, 2018 9:40 am

    bluemeanies wrote:So reading about heat being contained in a small area I have some concern although I am not sure my concern comes from reading these posts rather than the issue itself. I have an external 2tube dac with 2" of clearance from the top of the dac to the shelf above it. All my shelves are open, meaning there are no front, Back, on sides. Heat to the touch does not exists,however it is warm which is natural an is how I would describe it...warm not HOT.
    With my description do you think a fan is necessary?
    After reading this I am not sure.

    I don't think so.  Consider old tube TV's.  They used to be ALL tube and they were not well ventilated cabinets.
    avatar
    Kentley

    Posts : 497
    Join date : 2015-03-06
    Age : 66
    Location : Worcester, MA

    Re: How should I punch 3" by 3" holes in the original ST-70 cage for additional ventilation?

    Post by Kentley on Fri Jul 13, 2018 9:57 am

    New2Tubez - I forgot completely about the recent thread on the AB board and its properties which mitigate need for TDR. But others - be aware that use of the Weber WS-1 SS rectifier module necessitates some sort of delay, and careful monitoring of AC line voltage.
    bluemeanies - Like the SP-14 pre, your tube DAC is in no danger of overheating. It is only a possible concern for high-power devices such as ST-120s, M-125s, etc.

    New2Tubez

    Posts : 25
    Join date : 2018-03-20
    Location : NY

    Re: How should I punch 3" by 3" holes in the original ST-70 cage for additional ventilation?

    Post by New2Tubez on Fri Jul 13, 2018 10:04 am

    dmagazz wrote:ahhhh/ nice. very well thought out.
    these supposedly work very good
    https://www.quietpcusa.com/Noctua-Anti-Vibration-Fan-Mounts-NA-SAV2-P1028.aspx

    Thanks

    I got those very ones. In black too!
    Problem is the cage hole perfs are too small. When I tried to pull the fastener through the perf, it snapped. I tried more than one. I really don’t want to make the perfs bigger.

    Dogstar

    Posts : 341
    Join date : 2014-06-23

    Re: How should I punch 3" by 3" holes in the original ST-70 cage for additional ventilation?

    Post by Dogstar on Fri Jul 13, 2018 1:12 pm

    I think installing the fan on the back of the cover and having it push air past the transformers is the better configuration from both a performance and appearance perspective.
    avatar
    bluemeanies

    Posts : 260
    Join date : 2015-02-09
    Age : 68
    Location : Folsom Pa.

    Re: How should I punch 3" by 3" holes in the original ST-70 cage for additional ventilation?

    Post by bluemeanies on Fri Jul 13, 2018 10:40 pm

    Thanks Kentley and corndog71
    Appreciate your input.
    avatar
    Kentley

    Posts : 497
    Join date : 2015-03-06
    Age : 66
    Location : Worcester, MA

    Re: How should I punch 3" by 3" holes in the original ST-70 cage for additional ventilation?

    Post by Kentley on Mon Jul 16, 2018 10:30 pm

    Dogstar, you are correct re: placement of fans at the rear. I feel much more heat being displaced now that I've taken your advice. An added benefit is even less noise pollution from rotating blades than ever before. Onward and Upward!

    Sponsored content

    Re: How should I punch 3" by 3" holes in the original ST-70 cage for additional ventilation?

    Post by Sponsored content


      Current date/time is Wed Nov 14, 2018 3:50 am