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Wood4theTrees
Contributor II
September 23, 2017
Question

Connect amp 4 speaker wiring 4-8ohm speakers

  • September 23, 2017
  • 7 replies
  • 1119 views
Hi there. I've just added a connect:amp to my collection and have 2 speakers connected that are rated at 4-8 ohm. Does this mean I can't wire in another pair of 8 ohm speakers? What does 4-8 ohm mean? Surely they are either 4 or 8 or 6? Cheers
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    7 replies

    Kumar
    September 23, 2017
    The ohms/impedance is a measure of how much power the speakers draw to deliver sound and for most speakers more power is needed/drawn to deliver lower frequency content than higher, so the impedance keeps varying with a range.

    The Connect Amp can only give power enough to one speaker pair, if it will draw power in such a way that impedance drops to 4 ohms.

    To add another speaker pair, you need an impedance matching device between the amp and all speakers. It will then restrict the power draw such that the Connect Amp is not asked to deliver more power than it can deliver. The consequence will be lower sound levels from the speakers.
      Wood4theTreesAuthor
      Contributor II
      September 23, 2017
      Are these devices easy to come by and reasonable?
      Kumar
      September 23, 2017
      I think so, though I have never needed to use them.
      An example - https://www.amazon.com/dp/B000NJHAFQ
      This one is to serve 4 speaker pairs, I am sure there are those that support just 2 pairs as well. Volume can be controlled independently for each speaker pair, impedance matching can be selected and most that I have seen don't even need a power supply.
        Kumar
        September 23, 2017
        Another link with a review by someone that has used it with Connect Amp: https://www.amazon.com/Niles-SSVC-2-Speaker-Selector/dp/B00022LD7A/ref=sr_1_2?s=electronics&ie=UTF8&qid=1506164934&sr=1-2&keywords=niles+ssvc-2+speaker+selector

        But USD 314 for it seems to be wrong/too high, IMO. Worth investigating further.
          Wood4theTreesAuthor
          Contributor II
          September 23, 2017
          I'm in the UK but seems like just the thing! Probably better to spend that money on a different pair of speakers if it was $300+
          Kumar
          September 23, 2017
          There is no reason it should be that high, many don't even need mains power to be applied to them.
          See this: https://www.amazon.co.uk/Monoprice-2-Channel-Speaker-Selector-Control/dp/B01M7MGHAQ/ref=sr_1_fkmr0_4?ie=UTF8&qid=1506177870&sr=8-4-fkmr0&keywords=Speaker+selector+SSVC+2+channel
          IMO even 50 quid is too high but it must not sell in too many numbers to allow for a lower price.
          Kumar
          September 23, 2017
          A cheaper one: https://www.amazon.co.uk/B-Tech-BT12-Speaker-Control-Terminals/dp/B001JLGEWM/ref=pd_sbs_107_15?_encoding=UTF8&psc=1&refRID=46T2144SAJ0ANY7EJS62

          But some reviews say their unit has its wires crossed inside!!
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