heatsinks will get much hotter than the outside of the amp, Depending on the design you can touch the heatsinks, my old NAD was like this, if you stuck your finger up the bottom vent and touched the heatsink directly after cranking it you would be greeted by a little too much heat.
The sound that keeps playing when you unplug the amp means that first of all you have got a decent amount of filter capacitance, and that you also dont have a speaker protection relay that will usually come on when you do something like unplug the amp. This is perfectly normal for amps without a relay.
Also keep in mind that you cannot measure impedance with a multimeter by just sticking the probes on the speaker terminals. Speaker Impedance is the average of the different resistance at different frequencies.
Last edited by Haoleb; 11/25/06 06:36 AM.
