[LeoRavus]

My front speakers have 5.25" drivers and can get fairly low. My surrounds have 2.5" drivers. Basically zero bass.

I plan on upgrading the surrounds eventually, but in the meantime where should the crossover be? Should I base it off the size of the fronts or the surrounds?

The surrounds I'm using currently have a low of 280 Hz I believe (Bose doesn't give out specs), while the fronts are 53 Hz. I'm using a Yamaha sub that can shake the room so I'm good there.

 

[SierraMikeBravo]

The crossover is really based on the acoustics of the room and placement not what the speakers are capable of. THX set the standard at 80Hz. This is not by accident. THX had specified that if speakers are 3.5 feet away from the front wall, in order to mitigate SBIR, we should set it to 4 times the distance which is 14 feet. The wavelength of 14 feet is 80Hz. So, it really boils down to what the distance of the acoustic center of the speaker is from the back and side walls.

 

[zeuspaul]

Does your receiver have only one crossover setting? I have owned four receivers in the past ten years including Sony, Denon and Marantz and they all have separate crossover settings for the mains and the surrounds.

 

[LeoRavus]

Does your receiver have only one crossover setting? I have owned four receivers in the past ten years including Sony, Denon and Marantz and they all have separate crossover settings for the mains and the surrounds.

It looks that way. The receiver is over 15 years old but still working fine. There are separate EQ and volume settings for each speaker but I don't see crossover listed individually. There are six settings from 40-150Hz. I'll play around with it some more to make sure.

I may be replacing the surrounds with Polk S10s that have a frequency closer to the fronts.

 

[TMcG]

Any why is the thread in dedicated home theater design and construction?

 

[markmon1]

The crossover is really based on the acoustics of the room and placement not what the speakers are capable of. THX set the standard at 80Hz. This is not by accident. THX had specified that if speakers are 3.5 feet away from the front wall, in order to mitigate SBIR, we should set it to 4 times the distance which is 14 feet. The wavelength of 14 feet is 80Hz. So, it really boils down to what the distance of the acoustic center of the speaker is from the back and side walls.

Yes but this assumes the speakers are capable. THX doesn't account for a 2.5" tweeter running rear surrounds lol.

 

[LeoRavus]

Any why is the thread in dedicated home theater design and construction?

 

[LeoRavus]

Yes but this assumes the speakers are capable. THX doesn't account for a 2.5" tweeter running rear surrounds lol.

They're actually Bose acoustimass double satellites that went to the old surround I sold most of years ago. lol I'm in the process of putting something else together.

I'm not sure if I'm even supposed to be running the doublshots without the original bass module. I'm seeing conflicting stories online. Just ordered the Polk S10s.

 

[SierraMikeBravo]

The crossover is really based on the acoustics of the room and placement not what the speakers are capable of. THX set the standard at 80Hz. This is not by accident. THX had specified that if speakers are 3.5 feet away from the front wall, in order to mitigate SBIR, we should set it to 4 times the distance which is 14 feet. The wavelength of 14 feet is 80Hz. So, it really boils down to what the distance of the acoustic center of the speaker is from the back and side walls.

Yes but this assumes the speakers are capable. THX doesn't account for a 2.5" tweeter running rear surrounds lol.

True dat.