EWA LS-40 Reference Loudspeaker Cables

EWA LS-40 Reference Loudspeaker Cables


EWA LS-40 Loudspeaker Cables stereo set.


State of the art loudspeaker cable design by Colin Wonfor, representing a culmination of over fifty years experience with signal and power transmission. Incorporating all the prior strengths of LS-25 and 50 and adding further advancements to the EWA cable system. An almost lossless design without bottleneck, resulting in true reference grade performance.


Although LS-25 and LS-40 cannot be bi-wired, LS-40 jump links are available at 33% discount when purchased with LS-25 or 40.


Furutech termination available on request: FP 200 / 203 G, or FT 211 / 212 G.


  • All measured at 3M (1M measurements were to small to register):


    Capacitance at 3 metres = 100pF Each single conductor red or black
    Inductance on each single conductor is 3.3uH at 3 Metres
    Leakage/Common Mode inductance Less Than 0.9uH at 3 Metres
    Resonant frequency a single conductor red or black 15MHz at 3 Metres
    Total Resonant frequency in normal use i.e. 8 Ohm load is 8.76MHz at 3 Metres.
    Longer length will have more capacitance/inductance and the resonant frequency will reduce.
    The loading on the amp is very very small and at audio frequency would not be noticeable i.e. 10Hz to 25KHz
    Phase change from input to output at 100KHz was less than 1Deg.

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Home of the EWA cable system and SECA technology for amplifiers, by Colin Wonfor.  Contact us: info@ABCaudio.biz.  All text and images copyright 2020. ABCaudio.