Yes they are definitely 8 ohms.
I bought a new pair 2 months ago and was initially interested in either the IB2se or the MB2se. PMC themselves recommended the MB2se as they are an easier load for the amp. |
the MB2S are 4ohm as well.
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From the PMC manual, impedance for MB2SE is 8 ohms. This is what I was asking. Single Amp > HF_MF_LF = Impedance of 8 Ohms Bi-Amp 1st Amp > LF = Impedance of ? Bi-Amp 2nd Amp > MF_HF = Impedance of ? I don't know the answer, that is why I am asking. It seems to me that you would have different impedance ratings when all three drivers (HF_MF_LF) are connected vs. two drivers connected (HF_MF) and one driver (LF) individually connected. I sent an inquiry to my dealer. |
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Dealer said the impedance was the same.
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Now I an no electronics engineer , but from reading I believe there is a change in impedance when splitting a crossover.
Apparently impedance specs are normally given with both high and low crossover networks and drivers connected together. Usually when splitting the crossover , the mid/tweeter section will exhibit a higher impedance and the woofer section a lower impedance. |
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When doing some research on bi-amping, it was noted that using amps with different gains/sensitivity will unbalance the intended sound of the speaker and therefore an active crossover was necessary. or Use the same style amp for each of the feeds; Bass and Mids_Tweets. This was interesting. https://pmc-speakers.com/technology/crossovers |
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The bryston amps have a selectable gain switch, so they can be all set to the same gain, so it can be done without the crossover. That is an interesting article, but they talk about the fact speaker crossover. I assume(hope) the same care is taken for the MB2SE speakers also. I had a pair of IB2i Actives and had to replace the boards 3 times. |
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