The Village Idiot
Join Date: Nov 2008
Location: State of Confusion - 98823
Mentioned: 13 Post(s)
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Think of voltage available at the power supply with the caps as 'reservoirs', much like a hose with a manifold with 5 hoses connected. With all five valves open each has a relatively equal volume to the other 4. Shut 3 off (stereo!) and the two that are flowing will increase their flow, the limiting factor would be the resistance in the two hoses. Power amps are very similar.
I've attached the results of a bench test for the AVR I own, the Yamaha RX-A2070. Two channels driven delivers a lot of power, when the other 5 are connected up the front L/R has less power available due to the reasons I listed above.
Yamaha A-S1000 Int. Amp - Salk SongTowers - Oppo 103 - Marantz TT42 - Emo XDA-2 DAC
Multi-Channel: Yamaha RX-A2070 - Custom One-Off Selah Audio Center - Emo ERD-1 Surrounds
Twas a woman who drove me to drink. I never had the decency to write and thank her ~ WC Fields