swanny78
Established Member
Good afternoon fellow AV fans. A quick question and advice needed please. I have a dedicated cinema room (converted single garage). Its carpeted but has brick walls with some acoustic treatment on reflection points etc. I think its about 2.5m by 6m ish. I have an ATMOS set up in a 5.1.2 configuration typical positioning of speakers as recommended by Dolby. I have recently purchased some new speakers Q Acoustics concept 40's and a new sub Q acoustics QB12 sub. My Receiver is a Denon AVR-2600.
Now the 2600 seems fine in powering the speakers as they have a nominal impedance of 8ohms so fairly easy to drive. My concern seems to be when I start to get close to reference levels the sub seems to what I can only explain as make a muffled wobble sound and sounds rough. I am pretty sure from googling the issue it's being clipped by the amp. I have had to drop the db on the sub from the measured +6db to about 1.5db to prevent that happening. I don't use high volumes that often but I like to use it now and again. Before I buy a 2nd sub should I also be looking for a better amp to power the subs. The Q12 are pretty high spec as assume should manage the load the 2600 is putting on them, hence I think its the amp clipping the signal. I was looking at the next Denon up the AVR-3700. This seems to be a big step up in capability , although must admit I wont use a lot of the advanced video features as I use a Epson 9200 projector which can not do things like 8K, HLG, HDR @60Hz etc and does pixel shift to get a pseudo 4k image. I am pleased with the image tho.
So to my question is the upgrade to the 3700 something I should do, or am I wasting a grand on something I won't get benefit from, if the latter how do I sort the annoying subwoofer clipping?
Any advice welcome and thank you in advance.
Now the 2600 seems fine in powering the speakers as they have a nominal impedance of 8ohms so fairly easy to drive. My concern seems to be when I start to get close to reference levels the sub seems to what I can only explain as make a muffled wobble sound and sounds rough. I am pretty sure from googling the issue it's being clipped by the amp. I have had to drop the db on the sub from the measured +6db to about 1.5db to prevent that happening. I don't use high volumes that often but I like to use it now and again. Before I buy a 2nd sub should I also be looking for a better amp to power the subs. The Q12 are pretty high spec as assume should manage the load the 2600 is putting on them, hence I think its the amp clipping the signal. I was looking at the next Denon up the AVR-3700. This seems to be a big step up in capability , although must admit I wont use a lot of the advanced video features as I use a Epson 9200 projector which can not do things like 8K, HLG, HDR @60Hz etc and does pixel shift to get a pseudo 4k image. I am pleased with the image tho.
So to my question is the upgrade to the 3700 something I should do, or am I wasting a grand on something I won't get benefit from, if the latter how do I sort the annoying subwoofer clipping?
Any advice welcome and thank you in advance.