I recently setup a new SK10Y, and at first audio quality was great. Now it sounds like the sub is running at 5% volume that the soundbar is. The sub is connected, and there is faint sound coming from it, but more than a foot away you cannot hear it. I've repaired the sub, adjusted the sub level to +6 and still the sound is super flat. I've reset all settings and tried multiple sources all with no change in sound.