YAMAHA Z7 AND 3900 USER

claero

HI EVERY ONE
i just saw the post dicussing the power of yamaha was very low  .......thats why i serach on the internet .

this is ALL UNDER THE SAME TEST , SAME MECHINE AND SAME MAGAZINE

Power output: <0.1% THD + N


Yamaha RX-Z7                       Yamaha RX-Z11         Denon AVR-5308C(A1Hd)
1CH, 8 ohms 170 wpc              190 wpc                    1CH, 8 ohms: 160watts
2CH, 8 ohms 155 wpc              172 wpc                    2CH, 8 ohm, 150wpc
1CH, 4 ohms 255 wpc              300 wpc                    1CH, 4 ohms: 240wpc
2CH, 4 ohms 225 wpc              256 wpc                    2CH, 4 ohm 220wpc


seems z7 have even more power than a1hd .......so what do u guys think?
imformation from :
http://www.audioholics.com/reviews/receivers/rx-z7-7.1/rx-z7-measurements
http://www.audioholics.com/reviews/receivers/denon-avr-5308ci/measurements-conclusion

yuppi

claero hing,

Refer to my post:
http://www.post76.com/discuss/viewthread.php?tid=18372

The power output of Z7/ 3900 for 0.1% THD 2CH is arround 190W in the graphic which is much higher than your refer link, no one said that Z7/3900 has low power for 2 CH, but it is meaningless if a AV amp only has a high power in 2 channels....you cann see that SONY 5400ES is arround 160W in 2 channel but only 45W for 5.1 channel.

我原意只想講出事實,俾其他 CHing 作買 amp 時參考, 並無踩踏任何牌子意思, 如果事實令你不安, 在此 Sorry...

claero

我原意只想講出事實,俾其他 CHing 作買 amp 時參考, 並無踩踏任何牌子意思, 如果事實令你不安, 在此 Sorry...

don't need to sorry ,i never said that as well , i m just curious why the power can delivery more than a1hd in 2 channel but drop as low as 6003 when using 7 channel,  i m not a z7 user,i will change amp soon , i want to know as well , if any one have idea please let me know .

happy disccuss

yuppi

As I know, 3900 and Z7 are using 2 18000uF capacitors which are same as 906/876, I also not know why Yamaha is such low power in 5.1, 7.1 mode.....

Maybe the transformer of Yamaha is much smaller than ONKYO (real)