Hello. The subwoofer makes around 30 Hz, a very strange noise. Clearly, the noise is up when you play a constant tone between 25 and 40 Hz, and then at the volume level and is down. Have this problem discussed in the AVS Forum, just type in Forun in finding Sweep Qube 8 and you can find my post. There I also posted a Youtube link by clearly hear the sound. But that was not the only problem. In the beginning, the subwoofer itself bubbled without connecting a signal source like a Harley. That has set up but as far as other people are hardly even heard. But Ansich the subwoofer has an incredibly beautiful, soft and dry bass. Despite being so small he has to get it managed to vibrate my sofa.
Now I have the Qube 10, first-class sound, but he also is bubbling. Quadral but has a very good customer support and taking care of drum, but the answer to the problem with the Qube 8 has a little disappointed me ... "that is supplied with the device just so" when a subwoofer for 400?!?
