Need some crossover advice for my system

[TheDude]

I know this is a topic that's always beat to death and know it really boils down to what I feel sounds best for my room and ears, but I wanted to get some thoughts.

 

I have a 12x18 living room with a Denon 4800H receiver.

For speakers I have: RP-8000F II's for fronts, RP-504C II for center, RP-600M II's for rear surrounds which are corner angled at my sofa (only option I have), RP-500SA for Atmos (only option I have is upfiring so better than nothing imo) and a RP1200SW for the subwoofer.

 

I ran Audyssey on my Denon which always sets my front and center speakers to full range and the rears and atmos to 60 hz. I have my sub on lfe and 120 hz.

 

I am trying to figure the best crossovers vs what Denon is giving me so I've been experimenting.

I tried the typical 80 hz all around with the exception of the 500SA's which I changed to the recommended 150 hz from Klipsch. Left sub on 120 hz. This just doesn't sound great.

Changed fronts, center and rears to 60 hz and left sub at 120 hz. Sounds way better.

Changed the front towers to 40 hz, left the center and rears at 60 and sub at 120. Sounds good this way too, but hard to tell if this is the way to go vs the 60 all around.

 

Any thoughts?

 

[Peter P.]

Call me crazy, but I'd set the high pass frequency for all your speakers to the low pass frequency of the subwoofer.

 

Then experiment with varying that 120Hz setpoint.

 

Let the subwoofer do the heavy lifting. Doing so will protect your speaker array from damage if you play loud.

[Trey Cannon Ex-employee]

In crossovers, the lowest point wins...so on your sub and in your receiver  you have a sub Frequency number.  IF you set them both to 120Hz, you get 120Hz and down. IF you set your sub to LFE, then in the receiver you should use something lower...about 10 to 20Hz above your mains...So mains on 60Hz, sub at 80Hz. IF you have more than 1 sub and they are more than 11 Ft apart, you can cause them to cancel some sub sounds. This is due to the distance from the main to each sub is different and you most likely have only 1 sub distance setting.  In this case, you can solve that cancelation by placing the subs side by side or on top of each other. This makes them act as 1 BIG sub. 

 

[TheDude]

On 2/9/2025 at 8:57 AM, Trey Cannon said:

In crossovers, the lowest point wins...so on your sub and in your receiver  you have a sub Frequency number.  IF you set them both to 120Hz, you get 120Hz and down. IF you set your sub to LFE, then in the receiver you should use something lower...about 10 to 20Hz above your mains...So mains on 60Hz, sub at 80Hz. IF you have more than 1 sub and they are more than 11 Ft apart, you can cause them to cancel some sub sounds. This is due to the distance from the main to each sub is different and you most likely have only 1 sub distance setting.  In this case, you can solve that cancelation by placing the subs side by side or on top of each other. This makes them act as 1 BIG sub. 

 

Thanks for that information.

 

I got an Atmos demo disc and started really messing around yesterday with the crossovers. I tried the 40 fronts, 60 center, 60 rears and sub was still at 120 hz. That is what to me sounded best.  60 all around was good and not much different, but on the demo disc theres a Transformers scene where there is a very distinct effect that really comes out of the fronts at 40hz. Tried 80 all around again and it was definitely flat and effects didn't pop.

 

I will try the 80 hz on the sub and see how that sounds. I only have the 1 sub.

 

Should the 500sa atmos speakers stay at 150hz?

 

Edited February 10 by TheDude

[Mike_S]

How do you have your speakers setup as? Are they all big? Start there.

Usually you cross the center over 100hz to keep voices clear

Front Big L/R 60-80hz depending on speaker type

Rear L/R big same again depending on size 

 

Atmos should get no bass, set them over 100hz again depending on size. 

If you are using LFE, make sure the sub crossover is not being used. That will kill the bass. 

[TheDude]

4 hours ago, Mike_S said:

How do you have your speakers setup as? Are they all big? Start there.

Usually you cross the center over 100hz to keep voices clear

Front Big L/R 60-80hz depending on speaker type

Rear L/R big same again depending on size 

 

Atmos should get no bass, set them over 100hz again depending on size. 

If you are using LFE, make sure the sub crossover is not being used. That will kill the bass. 

 

The only way to set a large in Audyssey is full range. I prefer not to do that because then it sends all bass to the mains. If I pick lfe plus mains it doesn't sound right. Any other setting is automatically considered small with the option to change the crossovers. 

I tried the full range as that's what Denon configured, but it didn't sound right and put my center at 40 hz when it shouldn't be that low according to the specs.

I can definitely hear dialog clear because my room isn't huge. 

 

I did set the sub crossover at 80 hz as recommended and it is still set to lfe. I can definitely hear bass very well. It's either lfe or lfe plus mains.

 

 

Update: After running more tests with my ears and the demo disc this us what I've settled on that sounds really amazing for my room. The bass rumbles really stand out and everything sounds blended. 

 

Fronts LR 40 hz

center 60 hz

rears 60 hz

dolby 150 hz

 

sub lfe 80 hz

 

Edited February 10 by TheDude