Interesting Speaker Design - ELAC Adante AS-61

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  too_much_boost on 19/10/2019 - 17:21

  I wonder why they did that rather than just use an 8in driver

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    thebadmachine on 19/10/2019 - 17:33

    Apparently according to a speaker designer this design would reduce ‘ringing’ and distortion from the cabinet.
    Which agrees with ELAC’s claims to the speaker having a ‘reference’ tuning.

    There are always draw-backs though, which I would expect are the sacrifice of initial ‘attack’ / responsiveness of the bass-driver (passive-radiator in this case) compared to an active 8-inch woofer mounted on the front-baffle.
    Also I think the SPL of the bass-driver (passive-radiator) would be limited, which is kind of shown in the sensitivity measurement of 85dB (it’s a thirsty speaker).
    https://www.elac.com/product/as-61/

    Personally it is the first time I have seen this design. I read the specs and it says ‘passive-radiator’, I looked at all the pictures and only when I searched for the internal picture did I realise where the passive-radiator is.

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      too_much_boost on 19/10/2019 - 17:57

      I've used car subs that use a passive radiator and i think conventional ported boxes are better. With a passive radiator, there is the same delay that a ported box has, with the addition of needing to move the weight of the radiator. It couldn't possibly be as efficient

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        thebadmachine on 19/10/2019 - 18:07

        Yes the design of the ELAC is more about squeezing that extra bit of fidelity out of the sound.

        I am lacking in experience with car-subwoofers but I imagine you would want the maximum SPL with high efficiency (being powered by the car battery) so ported subwoofers would be the way to go.