100hz vs 120 hz?

[Eagle_23]

Can someone explain what is meant in my set up in regards to 'hz'. The reason I ask is I ran the auto/mic calibration on my Onkyo as I recently received my 4 new surround speakers. When I was looking at how it set everything up I saw it put my L/R surrounds to 100hz and my rear L/R to 120hz even though their the same type of speaker.

Thanks.

[Beerserker]

Hz, or Hertz is the frequency of the sound measured in cycle per second. The lower the number, the deeper the sound.

If you are not pleased with the auto setup you can tweek it to suit your needs.
What speakers ya got.

[dewd]

The difference is due to the proximity to the wall, the location of the mic, or many other possible environment issues. Your Onkyo (Audyssey) measured the response IN YOUR ROOM. Very important if you want your speakers setup correctly (the published specs do not consider the performance in your room).

Do not tweak the numbers DOWN. Moving them UP is OK (especially if any speakers were set to FULL). When you lower the numbers, you lose the EQ correction and you now have a hole in your response.

BTW - If any of your speakers were set to FULL, try setting them to 80hz.

[Eagle_23]

I have 4 Axiom QS8's for my surrounds.

In regards to speakers set to full, it did so on my 2 front tower speakers (Polk RTi A5's), so I should set these to 80hz? What does "FULL" even mean?

Thanks.

[jomari]

Originally Posted by Eagle_23

In regards to speakers set to full, it did so on my 2 front tower speakers (Polk RTi A5's), so I should set these to 80hz? What does "FULL" even mean?
Thanks.

Full means receiving the entire frequency bandwidth is being sent to your speakers.

With regards to your fronts, id definitely consider trying to set it at 80hz, and see how it 'sounds' to you. As ive mentioned earlier, your speakers are currently receiving the entire bandwidth, let your subwoofer do the heavy lifting for the lower frequencies, and have a better room response as well.

The other settings indicated in Hz are crossover settings to determine at what point the AVR will send the lower frequency to the subwoofer.

Further information can be found by Big Daddys sticky, crossover settings guide

[dewd]

Originally Posted by Eagle_23

I have 4 Axiom QS8's for my surrounds.

In regards to speakers set to full, it did so on my 2 front tower speakers (Polk RTi A5's), so I should set these to 80hz? What does "FULL" even mean?

Thanks.

That's about where my QS8's are set. As with yours, my rears are crossed over higher then the sides.

[BIslander]

This is all about bass management, a process that reroutes low frequencies from the main speakers to the subwoofer. Very few speakers can handle deep bass frequencies as well as a sub.

"Full" means no bass management - no frequencies are rerouted to the sub.
"Large" also means no bass management.
"Small" means bass management is engaged.

The crossover determines which frequencies are rerouted to the sub. THX recommends 80Hz. 100Hz and 120Hz are also commonly used. Speaker manuals generally have recommendations about whether a speaker should be set to large or small and where the crossover should be.

[Big Daddy]

Please read A Guide to Bass Management.