Recently Purchased Yamaha yt 1840, I am happy with the speaker's output however I am not convinced with the 'BASS' since it comes with Passive Subwoofer and it is too flat and subtle. Tried playing around with settings but that wasn’t enough.\n\nNeed suggestions on improving the bass, I am looking for something which would be deep and heavy unlike the current Subwoofer.\n\n1. so should I try looking out for external subwoofer amplifiers and connect the passive subwoofer with the AV receiver. If it definitely improves the experience, help me with budget friendly amplifiers that connects my passive subwoofer and AV receiver. \n\n2. Or should I go with an additional active subwoofer and connect it with the AV receiver. The most commonly heard name was “Yamaha Subwoofer NS-SW050” but couldn’t audition it.\n\nIf this would not be a right match, need suggestions for budget friendly active subwoofers that could go with the AV receiver through pre out subwoofer.