Rob_63 and ss9001--
Thanks for the responses. I'm aware of the class D design of the amplifiers in the SC-68 - and I realize they are much more efficient than class AB used in older receivers like the VSX-49tx. Where my confusion lies is understanding how it is possible for a receiver to emit more total watts to the speakers, than the total wattage consumed from the AC outlet? I am aware of the measured lab results on the SC-68, so I'll have to research class D a bit more to understand how this is possible. I suspect that the method used to measure the unit's output power (RMS watts) is not directly comparable to the wattage consumed by the unit's power supply.
Some time ago, I considered the SC-09 as a replacement for my VSX-49tx, but passed on it due to price. Later, I considered the SC-57 as a possible replacement, but passed on it because I read that it could not decode the WMA lossless audio format - which is the lossless format I've been using. The SC-68 will decode WMA lossless, so that was a strong draw for me.
Once I solve the time delay issue between the SC-68 main zone, and zone 2 - I'm sure I'll be very happy with the SC-68.
Edited by Michael Bishop - 3/15/13 at 5:01am
Thanks for the responses. I'm aware of the class D design of the amplifiers in the SC-68 - and I realize they are much more efficient than class AB used in older receivers like the VSX-49tx. Where my confusion lies is understanding how it is possible for a receiver to emit more total watts to the speakers, than the total wattage consumed from the AC outlet? I am aware of the measured lab results on the SC-68, so I'll have to research class D a bit more to understand how this is possible. I suspect that the method used to measure the unit's output power (RMS watts) is not directly comparable to the wattage consumed by the unit's power supply.
Some time ago, I considered the SC-09 as a replacement for my VSX-49tx, but passed on it due to price. Later, I considered the SC-57 as a possible replacement, but passed on it because I read that it could not decode the WMA lossless audio format - which is the lossless format I've been using. The SC-68 will decode WMA lossless, so that was a strong draw for me.
Once I solve the time delay issue between the SC-68 main zone, and zone 2 - I'm sure I'll be very happy with the SC-68.
Edited by Michael Bishop - 3/15/13 at 5:01am


























normal or horizontal mounting?
Now works just fine with zone 4 off. Thank you, Roger.