Denon X4800H bi-amped power on pop
Several months ago I got an X4800H to replace an aging X4200W.
I was very happy with it and all was well until I decided to bi-amp the main speakers.
This is using the pre-set configuration option of 5.1 (bi-amp) + zone 2. I am not using zone 2.
There was no power on pop with I was only doing 5.1 without bi-amp and without zone 2.
The pop is not loud and sometimes doesn't happen. I am guessing the pop only is happening when the amp is cold. If I shut it down and then power it on again after running for long enough to get warm/hot, it sometimes/often doesn't happen at power on power.
Please note this is pop heard coming from the main speakers not the click inside the amp.
My google-fu has not turn up anything and I am not a participant in any Denon forums.
@deep_333 All secondary zones are power off.
I am bi-amping using the AVR since it has 9 separate amp modules. The idea is to spread the load across separate amp modules and across heat sink. I get the idea that since they share the same power supply that it may be pointless. |
Lots of possibilities, don't have any denons, don't know for sure, but.... If it is "only happening with internal biamp", goes away completely when you remove biamp, it is a DC offset issue (woofer amp channel <-> tweeter channel) exasperated through the speaker’s passive crossover. If you change the biamp channels, ie...swap the woofer and tweeter channel, the pop might sound a bit different, confirming the above. Not good for the tweeter. Stop the biamp. ( denon feature oversight...or something failed, hard to tell, not a issue with the speaker, maybe try updating the firmware or complain to Denon, they may release firmware with a fix.)
@travelinjack wrote
|
Do you hear any benefit with bi-amping? If not just go back, but if there is a benefit you could just leave the Denon on as it doesn’t burn all that much power on idle and may actually be better than turning it on/off every day if that’s what you’re doing. Frankly, your speakers deserve better than a mid-fi AVR and rather than worrying about bi-amping you’d be much better served by getting a good stereo integrated amp with a HT bypass and running the front L/R pre outs from the Denon into that — you’ll get much more out of those speakers. Just my $0.02 FWIW. |
On the X4800H, since the main front left/right speaker output and pre-outs are all active, does this mean it's possible to bi-amp using these?
If I connect the main front left/right to the high frequency on the speakers and then the pre-outs to a pair of Fosi V3 mono blocks which would feed the low frequency on the speakers? |
Yes, you can bypass its internal configuration assignment in this manner. For hifi purposes, you should eventually move away from the AVR and get a purpose designed preamp processor, i.e., it will have no internal amp sections. You connect the pre-outputs of such a processor into external amps or a beefy multichannel power amp. Even a flagship AVR is only good for hometheater, movies. For music, you will need a dedicated processor and separate amps and correctly gainstage everything. It is never a good idea to shove all those power amp sections into the same chassis. For example, this marantz would be a good fit. Or here’s a refurbished unit for a bit cheaper. This older Rotel, for example would be a good barebones processor as well, with a focus on sound quality for around a 1000 bucks. https://www.ebay.com/itm/336398263929
@travelinjack wrote
|
