Where to mount Jantzen C coil in sda srs

gregmoyers
gregmoyers Posts: 140
in Vintage Speakers
Where is the best place to mount a Jantzen C coil in the sda srs cabinet to keep it away from any interference? I’m thinking no where near drivers or the passive radiator. Not many places. I’m sure I’m not the first to do this. Just want it to be right.
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Answers

  • DarqueKnight
    DarqueKnight Posts: 6,765
    There is a cabinet brace just below the crossover opening that is 4" wide at the front and 1-3/4" wide
    at the sides. It provided a good place to mount the 2.75 mH and 16 mH inductors. The inductors were mounted with aluminum nuts and bolts.

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    I first used the two stock 2.75 mH inductors with a North Creek 16 mH SDA.

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    The stock 2.75 mH inductors were later replaced with Jantzen inductors

    Thread:

    https://forum.polkaudio.com/discussion/comment/1779021

    Proud and loyal citizen of the Digital Domain and Solid State Country!
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  • AMF007
    AMF007 Posts: 21
    For the big boys (SRS, 1.2, 1.2TL) that shelf is valuable for placement. For 2.3s, I pose the same question, to those who have already upgraded to a Jantzen or similar toroidal coil.

    There seems to be a trade off between made flat on the floor (Left or Right, to avoid wires coming in from binding plate?) or the inside wall (L and R inside wall a 2.3, balancing height from floor between PR and lower stereo driver L or R accordingly, or the L and R outside side wall for 2.3TL).

    This guy has done the work most of us don't have equipment to do, and in the video below it will help you feel better about these giant coils, and their affect on nearby components:
    https://www.youtube.com/watch?v=c8YYLla2I8U

    Also this guy does some great testing between parallel and perpendicular placements in relation to nearby drivers: https://www.youtube.com/watch?v=Vs1phXWgZsQ

    Looking for any experience from 2.3 owners on what you have already done, Thanks!!
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  • gregmoyers
    gregmoyers Posts: 140
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    I put it here. Sounds great.
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  • AMF007
    AMF007 Posts: 21
    I like that placement, in my 2.3s, that would be across from the XO, but I think far enough based on those videos as to not have an affect on other circuits B)
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  • AMF007
    AMF007 Posts: 21
    edited March 2023
    Noted, and similar mounting in my 2.3s. Next, create mounting board for XOs, and update XO components.
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  • pitdogg2
    pitdogg2 Posts: 25,435
    AMF007 wrote: »
    Noted, and similar mounting in my 2.3s. Next, create mounting board for XOs, and update XO components.

    Kind of wondering why you didn't seal the back side of the binding post cup with hot melt glue?
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  • Gardenstater
    Gardenstater Posts: 4,459
    Seems like you've gone to the nth degree so far B) Are those screws steel (ferromagnetic) or are they brass?
    George / NJ

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  • gregmoyers
    gregmoyers Posts: 140
    Brass
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  • gregmoyers
    gregmoyers Posts: 140
    I did seal the binding cups where needed.
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