All this speaker tap talk is interesting. I thought I had read before that hooking up the HE400 to taps was dangerous because of the amount of power being supplied, that resistors would be called for.....or something like that. But I guess if you care carefull with the volume it should work fine without probls no?
Turn op the volume and bye bye HE-400. Ideally you have a source with a volumn knob. Then this is your gain switch.