Echo Sub subwoofer review

Echo Sub Review

Echo Sub Review: An Affordable Subwoofer for Compatible Echo Devices

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Echo Sub Skin - Black Marble

Echo Sub will be a Subwoofer for Echo According to Pocket-Lint, New Products to be Announced Today

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Echo Sub review: All about that bass and we're delighted Review

Echo Sub review: Getting serious about sound

Echo subwoofer and Alexa-capable smart plug may be on the way

Can't connect echo sub and studio. Both have been de and then re-registered. I've reset wifi, double check both are on the same wifi and still nothing. What am I doing wrong?