Hey everyone,
First post in a long time but with all the time off with the covid stuff I've gotten back into the vintage stereo game with a vengence. Anyways I have recently added a Sony 7045 to my main listening system and absolutely love its sound. Wasn't expecting it to dethrone the Marantz 2245 but it has by a long shot at least to me. First thing I did before hooking up the Sony was to check the dc offset, 14 mv and even on both channels not bad for an un restored unit. Next I checked the bias which was reading at 48 mv on both channels, as per the manual the bias should be at 50 mv and offset of course 0 mv. I didn't do anything with the bias as i figured it was close enough to 50 mv that adjustment wasn't warranted or a good idea since it was so close. I did adjust the offset to 0 and it is holding that setting with no problem after a week of use. So what my question is I was wondering how warm your 7045 or 6055 6050 run. I notice that after around a half hour at idle with no input the heat sink is starting to generate a very small amount of heat, just enough to tell that there is tempreture there above cold unit off conditions. After running the unit at high moderate volume levels for a few hours the heat sink is on the upper end of warm to the touch, not hot or burning but definitely warm flirting with what i think might be excessive? Unit has room to breathe and speakers are Phase Tech 3t bookshelfs with 90 db efficiency and an 8 ohm rating so not a hard to drive speaker. At any rate just wondering if this is normal for this receiver or if its the sign of a looming problem, like i said the unit does sound great though. Any thoughts/suggestions are appreciated.
Sorry for the long winded post,
Thanks
Dan
First post in a long time but with all the time off with the covid stuff I've gotten back into the vintage stereo game with a vengence. Anyways I have recently added a Sony 7045 to my main listening system and absolutely love its sound. Wasn't expecting it to dethrone the Marantz 2245 but it has by a long shot at least to me. First thing I did before hooking up the Sony was to check the dc offset, 14 mv and even on both channels not bad for an un restored unit. Next I checked the bias which was reading at 48 mv on both channels, as per the manual the bias should be at 50 mv and offset of course 0 mv. I didn't do anything with the bias as i figured it was close enough to 50 mv that adjustment wasn't warranted or a good idea since it was so close. I did adjust the offset to 0 and it is holding that setting with no problem after a week of use. So what my question is I was wondering how warm your 7045 or 6055 6050 run. I notice that after around a half hour at idle with no input the heat sink is starting to generate a very small amount of heat, just enough to tell that there is tempreture there above cold unit off conditions. After running the unit at high moderate volume levels for a few hours the heat sink is on the upper end of warm to the touch, not hot or burning but definitely warm flirting with what i think might be excessive? Unit has room to breathe and speakers are Phase Tech 3t bookshelfs with 90 db efficiency and an 8 ohm rating so not a hard to drive speaker. At any rate just wondering if this is normal for this receiver or if its the sign of a looming problem, like i said the unit does sound great though. Any thoughts/suggestions are appreciated.
Sorry for the long winded post,
Thanks
Dan
I can hold my hand on the heat sink as long as i want when its at its hottest so we are not talking insanely hot but was just curious since this does run noticeably warmer than the Onkyo 7055 it replaced which does have a much larger heat sink so thats probably the reason. Anyways back to a beverage and some tunes.
