@peng
So, is the 97dB for the center channel, and 103dB for the left channel, measured at 1.4 volts, with it disconnected or connected?
I think simple solution for many would be to get an external amp that can be driven to ones needs that doesn’t require more than 1.5v (if one needs external amps). Performance remains very good in such a scenario on channels that can’t be disconnected on the older Denon’s like the x3600, correct?It is not 97 dB (that must be just a typo you made), it is 74.55 dB for the center channel.
The center channel's internal amp was connected, it cannot be disconnected anyway. That's why it did not perform that well at 2.0V/ The AVR-X3600H does not have preamp mode so only the front left and front right channel power amps can be disconnected using the Amp assign method. So that excellent 100 dB SINAD was obtained with the internal amp (left channel) disconnected.
It is not 97 dB (that must be just a typo you made), it is 74.55 dB for the center channel.
If you reduce the output to 1.4 volts, SINAD of the center channel improves to 97 dB whereas the Left goes up to 103 dB.
So surely the center did indeed go up to 97dB as I mentioned, but probably then with the front amp disconnected, L/R.
The key is the center (or any channel not disconnected) at 2V the performance is at a SINAD of 75. At 1.4V the center or any channel that is not disconnected from the amps at around 97.I don't know man, the test just don't make any sense to me.
Look at his post, read it from top to bottom, exactly what he says, and in the order he says it.
https://www.audiosciencereview.com/...r-x3600h-av-receiver-review.12676/post-380325
The image says: Front amp disconnected (Left & Center)
Center shows 74dB.
Then he says: As you see, Center channel without amp disconnect suffers a lot.
He just said it was disconnected???
I promise, read it yourself, several times, it makes no sense.
I don't know man, the test just don't make any sense to me.
Look at his post, read it from top to bottom, exactly what he says, and in the order he says it.
https://www.audiosciencereview.com/...r-x3600h-av-receiver-review.12676/post-380325
The image says: Front amp disconnected (Left & Center)
Center shows 74dB.
Then he says: As you see, Center channel without amp disconnect suffers a lot.
He just said it was disconnected???
I promise, read it yourself, several times, it makes no sense.
The key is the center (or any channel not disconnected) at 2V the performance is at a SINAD of 75. At 1.4V the center or any channel that is not disconnected from the amps at around 97.
The (Left & Center) part only means the numbers show the SINAD of the Left and Center channels, but only the Front amp(s) were disconnected.
If he meant to say Front and Center amps disconnected he would have said so.
The key is the center (or any channel not disconnected) at 2V the performance is at a SINAD of 75. At 1.4V the center or any channel that is not disconnected from the amps at around 97.
On this model the center can’t be disconnected (on the 3700 it can be in full preamp mode). The 97 is with the amp connected at 1.4v. Above that when connected performance degrades. You will see something very similar in all denon models with amps connected. If using external amps, and you get ones that don’t require above 1.4 or there abouts, you get very good performance even if the amps remain connected.No, I get this... that's not the problem.
The problem is prior to having him mention 97dB @ 1.4V for the center, he says this:
As you see, Center channel without amp disconnect suffers a lot.
Leads me to believe he got things confused, because in the test image he says the front amp (L/R) indeed was disconnected.
SO, this leads me to having to ask the following:
If you reduce the output to 1.4 volts, SINAD of the center channel improves to 97 dB...
WITH or WITHOUT front amp disconnected?
L-O-L this guy!
Because in post 269 @amirm says this:Right, but how do you know 97 is with the amp connected?
Just because the center can't be disconnected?
Disconnecting L/R will have no effect on the center channel?
Is it worth offloading my 4 ohm LCR channels with an external amp? I run my 3600 in 5.1.2 at some relatively high levels and I can notice a drop in available power when pushing 7 channels, even if it's only slight. Would it help the amp run a little cooler?
... At least put a fan on top of the unit.
Is it worth offloading my 4 ohm LCR channels with an external amp? I run my 3600 in 5.1.2 at some relatively high levels and I can notice a drop in available power when pushing 7 channels, even if it's only slight. Would it help the amp run a little cooler?
Do you think the two fans inside the 3600 are inadequate?