Marantz 2325's interaction with 4 speakers/load?

Well, even if the 2325 is powerful and resistant, I wouldn't try to connect such low load (6+4 in //) expect if you promise to listen at very low level (ambiance style). But you mention an efficiency of 87db (small speakers I suppose), that mean that you will need sometimes to increase volume, and face overload problems in your output stage, that is to say : dangerous current increase and peaks in the output transistors, and then risk of overheat and/or blowing. Stay wise with 4 ohms, and I agree with brose@echosat : nominal Z at 8 ohms is safest and furthermore better, because it provides less damping to the system, which is always overdamped usually. Yours Sincerely.

Why don't you consider getting a pair of Paul Speltz of Anit-Cable fame's new Auto-Formers. These would bring the impedance created by two 4 ohm speakers in parrell resulting in a 2 ohm load that the amp would see, back up to 4,6 or even 8 ohms depending on which taps you use. Another option for you. Also some of the early multi speaker boxes from Niles allowed you to hook up up to four speakers while maintaining the proper impedance by pushing the correct setting on the box for "multiple speakers" attached.

bartokfan, was that $250.00 an hour, or $2.50 an hour?LOL!