The Dynaco Tube Audio Forum

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


    Line Noise Suppression

    Peter W.
    Peter W.

    Posts : 1361
    Join date : 2016-08-07
    Location : Melrose Park, PA

    Line Noise Suppression  Empty Line Noise Suppression

    Post by Peter W. on Fri Feb 22, 2019 12:03 pm

    https://www.surplusshed.com/pages/item/R3267.html    

    Guys and gals:

    If any of you happen to have noisy power lines, and or induced noise from local sources such as dimmer switches, neon lights or oil-burner transformers - here is your solution at a very reasonable price for mil-spec. The OEM company is still in business, and the present-equivalent of this device is well into 3 figures.

    Note that many of you with Euro connections already have a poor cousin of this device installed:  https://www.amazon.com/Suppressor-Single-Phase-Line-Conditioner-JREle-CW2B-10A-T/dp/B073RLXRPB  

    I have ordered two examples - not that we have much noise, but we are gradually converting to LED lamps (from CFL and decorative incandescent) and LED dimmers are NOISY! Be prepared! I will mount it in a deep electrical box with a duplex grounded receptacle, and a 3-wire plug on SJO Cord. 10A should be more than enough for the lot.  One will be in the traveling kit as Kutztown is an extremely noisy environment.

    Just a thought.

    Also, for giggles,as there is a LOT of stuff out there:

    https://www.surplusshed.com/pages/item/M3274.html    

    For those of you with PIO Caps that are not already shielded:

    https://www.surplusshed.com/pages/item/M3167.html    

    And for those of you using cooling fans:

    https://www.surplusshed.com/pages/item/M2653.html
    deepee99
    deepee99

    Posts : 2244
    Join date : 2012-05-23
    Location : Wallace, Idaho

    Line Noise Suppression  Empty Re: Line Noise Suppression

    Post by deepee99 on Sat Feb 23, 2019 2:23 pm

    What a great site. Thanks, Peter. One more bookmark to dribble my monthly allowance from Uncle Sam away on.
    Wonder if they make a 20-amp version of that AC noise filter. Guess I'll peruse a bit and find out. I have a dedicated 20-a breaker to a dedicated line to the man-reset GFCI to the 20-amp Furman, thence to the hi-fi and LCD TV. It pulls a max of about 6.5 amps with everything lit, but who knows whence RFI cometh?
    avatar
    Dale Stevens

    Posts : 117
    Join date : 2014-07-06
    Age : 70
    Location : Loris, SC

    Line Noise Suppression  Empty Re: Line Noise Suppression

    Post by Dale Stevens on Sat Feb 23, 2019 7:53 pm

    Peter, that has to be a simple circuit . Is it R/C like Dynaco used on the Pre line input?
    Give us a drawing if you have. Dale
    bbqjoe
    bbqjoe

    Posts : 100
    Join date : 2018-12-03

    Line Noise Suppression  Empty Re: Line Noise Suppression

    Post by bbqjoe on Sun Feb 24, 2019 10:54 pm

    That speaker switch could be handy.
    If not a little too late though.
    I just got this delivered yesterday.

    https://www.amazon.com/gp/product/B001YIPCJQ/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
    Peter W.
    Peter W.

    Posts : 1361
    Join date : 2016-08-07
    Location : Melrose Park, PA

    Line Noise Suppression  Empty Re: Line Noise Suppression

    Post by Peter W. on Mon Feb 25, 2019 8:08 am

    Dale Stevens wrote:Peter, that has to be a simple circuit .  Is it R/C like Dynaco used on the Pre line input?
     Give us a drawing if you have.  Dale

    Dale:

    Yes, an absolutely simple circuit. The device has HOT/NEUTRAL/GROUND going in, the same coming out. My intention is to use a deep 1900-box with a duplex receptacle on the "out"side and an SJO pre-made line-cord to the proper grommet in the "in"side. When the parts arrive, I will draw out the circuit, and take pictures of the process. Can't imagine how much the Military paid for these beasts, but from this maker, similar devices are usually over $100 on 'the bay'.
    aguaazul
    aguaazul

    Posts : 112
    Join date : 2012-07-08
    Age : 59
    Location : Livermore, CA

    Line Noise Suppression  Empty Re: Line Noise Suppression

    Post by aguaazul on Fri Mar 01, 2019 11:52 pm

    I ordered the Surplushed JMF EMI SINGLE PHASE AC FILTER 115/250VAC 10AMP 50/60HZ.

    Here's what I got:16 Volt 3300uF Electrolytic Capacitor

    Even on the receipt image it's not the same.

    I called them... stay tuned.

    Cheers,

    Bluewater


    Last edited by aguaazul on Sat Mar 02, 2019 12:02 am; edited 1 time in total (Reason for editing : Block out personal info on receipt. Like 3 times....)
    Peter W.
    Peter W.

    Posts : 1361
    Join date : 2016-08-07
    Location : Melrose Park, PA

    Line Noise Suppression  Empty Re: Line Noise Suppression

    Post by Peter W. on Sat Mar 02, 2019 10:42 am

    Same here.
    Peter W.
    Peter W.

    Posts : 1361
    Join date : 2016-08-07
    Location : Melrose Park, PA

    Line Noise Suppression  Empty Re: Line Noise Suppression

    Post by Peter W. on Sat Mar 02, 2019 2:22 pm

    Spoke to them this morning. The caps share a bin with the EMI devices. "Keep the caps, your parts are on the way". Good sense of humor, too. Bluewater, I mentioned you. Call with the last four digits of your order number + email, and you will get the same treatment.
    aguaazul
    aguaazul

    Posts : 112
    Join date : 2012-07-08
    Age : 59
    Location : Livermore, CA

    Line Noise Suppression  Empty Re: Line Noise Suppression

    Post by aguaazul on Sat Mar 02, 2019 2:27 pm

    Yep, I received an email with a nice apology & letting me know that the 2 correct items are on the way and to keep the caps.

    It's a fun project, nothing crucial, not sweating it. Good folks.

    Sponsored content

    Line Noise Suppression  Empty Re: Line Noise Suppression

    Post by Sponsored content


      Current date/time is Sat Oct 19, 2019 7:31 am