My friend had this installed in his car by Halfords after he bought it from them a few months ago. The setup was very, very lengthy. I am not too sure whether this was because the subwoofer was awful to set up or whether the Halfords employee was just completely incompetent. However, as the employee is supposedly very experienced at installing such devices, I assume the 3 hours we were waiting for it to be installed were because of the subwoofer. The employee did mention some issues he had with the subwoofer but obviously we didn't really care once it was working. Now to performance, we were told to keep the subwoofer on low for the first few days ...  Read the complete review