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Kent Y · 02-02-2005, 12:34 AM

Regarding the stereo frequency range, the amp obviously couldn't push enough power to drive the lower ranges (20-40Hz) at 90 watts, so rather than list the full range wattage, Sony cut down the range. There must have been a big drop off for the lowest frequencies. 100 watts is the holy grail for many of the lower end mass market receivers, so they try to do everything they can to put that number on the box. Notice even the 90 watts is into 6 ohms. And, while the 100wpc in 6-channel mode is into 8 ohms, it was only measured at 1kHz, and the THD is very high at 0.7%. Very possibly with only one channel driven as well; certainly not with all six.

02-02-2005, 12:34 AM	#7 of 29
Kent Y Member Join Date: Jan 2005 Local Time: 02:50 PM Local Date: 11-23-2008 Posts: 14	Regarding the stereo frequency range, the amp obviously couldn't push enough power to drive the lower ranges (20-40Hz) at 90 watts, so rather than list the full range wattage, Sony cut down the range. There must have been a big drop off for the lowest frequencies. 100 watts is the holy grail for many of the lower end mass market receivers, so they try to do everything they can to put that number on the box. Notice even the 90 watts is into 6 ohms. And, while the 100wpc in 6-channel mode is into 8 ohms, it was only measured at 1kHz, and the THD is very high at 0.7%. Very possibly with only one channel driven as well; certainly not with all six.