So far none have been very loud. Will return to Harvey Norman today and ask for replacement as was enjoying the sound quality a lot. I've read some posts on this forum about the pop when you turn the subwoofer off, and most people say it harmless. I have a 5.1 audio system set up. I currently have gain at 11 oclock, sub -5db, room eq to Medium (though in a small room, i set Med because sub is not in a corner) and as soon as I play the 20hz tune at -15db on my onkyo 705 the subwoofer makes a popping noise, kind of like a big raspberry, when i took off the grill the driver was popping in and out wildly. Generally the thump occurs when there is no audio playing. The subwoofer is set to on. The subwoofer is making popping sounds and overall sound distortion. At completely random times, the subwoofer will start to make thumping noises. It's always just one at a time. For awhile I suspected it was some kind of abberation caused by DirecTV. But my subwoofer also always makes the sound when I turn it on. Recently I notice the subwoofer will make popping noise after playing for 10 to 20 minutes. Whenever the receiver loses the audio "codec"(signal) it … My setup consists of a Sony amp (the model escapes me at the moment), 5 Elac Unifi speakers and a Sumiko S10 subwoofer connected via a wireless module. Whenever I turn my subwoofer (Mission 70 ASE) on or off it makes a "poping" sound. Question Subwoofer making clicking noises: Subwoofer makes boom sound. Music playback from a computer has crackling noises or gets interrupted There is no sound from the rear speakers when connected to an active subwoofer. They'll usually come in bursts of 3-4 thumps (maybe 4-5 seconds apart), and then they'll stop for a random amount of time. Panasonic 5.1 Home Theatre’s subwoofer making rattling/cracking and popping sounds: How can I make my wireless subwoofer to my firetv: Make Bookshelf Speakers work with Logitech Z313 's Subwoofer: 5.1 Audio Subwoofer makes loud humming noise If your subwoofer(s) "thump" or "pop" when you are changing inputs on your receiver don't automatically blame the subwoofer. There is no buzzing from any speaker before it after the thump. I've got a 6 year old JBL 10" subwoofer (home theater sub, not a sub for a car) that has suddenly taken to making a constant rhythmic knocking sound, even when not in use by the receiver. Over the last week our subwoofer has been acting up. A speaker is not producing any audio, or is making a popping, crackling or fuzzy sound. It can be solved by turning off the the subwoofer, unplug the audio cable. It is so bad that I disconnected it until I can get it checked out. It sounds almost like someone is hitting a pillow against the wall. My Samsung Q90 Subwoofer is two weeks old, and the subwoofer is making popping noises, which sound like the subwoofer is blown. The subwoofer will only reproduce the signal sent to it from the AVR(Audio Video Receiver). But the noise will come back. My Atlantic Technology subwoofer has started making occasional popping noises. My issue is with a popping subwoofer. It's never frequent, maybe once every 1-3 hours, or less, of operation.