Soldering Speakers

Discussion in 'DCC Sound' started by Gary, Jun 26, 2017.

  1. Gary

    Gary Wants more time for modelling.... Staff Member Administrator

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    I'm about to solder in some sugar cube speakers into my Class 128 DPU and Jinty using Zimo decoders. Does it matter which way round the wires go from the decoder to the speaker...?? :scratchchin:

    Cheers, Gary.
     
  2. Dr Tony

    Dr Tony Full Member

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    Hi Gary,
    Polarity will make a difference in which way the cone goes when applied with a positive or negative voltage. As sound is an alternating current, or wave if you like, it is a mixture of positive and negative. So the short answer is that it makes no difference. There is one catch here, and that is if you have 2 speakers, then they should be wired the same, so the cones move out and in together, otherwise you will get phase cancellation and the bass notes will disappear.
    Cheers
    Tony
     
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  3. SMR CHRIS

    SMR CHRIS Staff Member Moderator

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    Hi Gary
    Tony's answer is spot on
    When sound decoders first started to appear a lot had the +/- speaker wires marked now most don't, they just have a pair of unmarked purple wires extending from the decoder
    On a 21 pin decoder it's pin 9/10 that are the speaker pins again manufactures don't label +/- with these.
    As Tony said it really only comes into play when wiring multiple speakers then you need to make sure they are in the same phase.
    Series +/-/+/-
    Parallel ++/--
     
  4. Gary

    Gary Wants more time for modelling.... Staff Member Administrator

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    Thanks for the replies Tony & Chris. These Zimo decoders (MX 644D) are small, let alone the tabs that I need to solder the wires to for the speaker and stay alive !

    [​IMG]

    and I knew my old clumpsy soldering iron wouldn't be ideal, so I purchased this little iron with a fine tip on the end..., a Jaycar special for $29.95..! I did look at other soldering stations but really I couldn't fork out $150.00 for the next model up...

    [​IMG]

    Cheers, Gary.
     
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  5. cmcan

    cmcan Full Member

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    Gary

    Is that a variable temp iron?

    Cameron
     
  6. Gary

    Gary Wants more time for modelling.... Staff Member Administrator

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    Yep, sure is.

    [​IMG]

    Cheers, Gary.
     
  7. Kimbo

    Kimbo Staff Member Moderator

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    Bargain Gary, looks like you could use that on O Gauge track no problems :thumbs::avatar::avatar: Ed has just the plan for you.......
     
  8. Gary

    Gary Wants more time for modelling.... Staff Member Administrator

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    Kimbo, I was just looking at Ed's minories plan but for the life of me I can't fit that much O gauge track onto two four foot boards... :avatar::avatar:

    Cheers, Gary.
     
  9. Kimbo

    Kimbo Staff Member Moderator

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    Right, understood, so a plan to fit the available space it is then......."the force is strong" :avatar:
     
  10. Henryblock

    Henryblock Guest

    I guess the sound speakers name at my car. Butr I have no ideas.

    Its a kenwood or Pioneer for 95 Accord?
     
  11. Toto

    Toto I'm best ignored Staff Member Founder Administrator

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    :scratchchin:
     

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