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So i have two subs currently and am only using 1 right now. I have an old Velodyne 12" sub that was my mainstay for the last 20 years. I recently replaced it with an 8" B&W because the room the stereo is in is much smaller than before. I have a chance to get a 2nd 8" sub and run the two subs for the Home theater. 

My question will it be noticeable running the 2 8" subs for the HTR or should I just go back to the 12" cannon? Or can I run both the 12" Velodyne and the 8" B&W on the same system or will there be issues?

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It does depend on your room and what the bass issues are.  As a general statement, there is a better chance of getting an even bass response with dual subs than a single sub.  However, if you have done the subwoofer crawl, a single sub may be enough.  

 

Yes, you can mix subs of different sizes but need to be careful not to overstress the smaller.

 

Sorry,  but the answer to your question on whether you will notice a difference is "it depends".  Please provide more details of your room, and the HT setup including AVR.  

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2 hours ago, Snoopy8 said:

It does depend on your room and what the bass issues are.  As a general statement, there is a better chance of getting an even bass response with dual subs than a single sub.  However, if you have done the subwoofer crawl, a single sub may be enough.  

 

Yes, you can mix subs of different sizes but need to be careful not to overstress the smaller.

 

Sorry,  but the answer to your question on whether you will notice a difference is "it depends".  Please provide more details of your room, and the HT setup including AVR.  

Thanks, Snoopy8, the setup is currently a 5.1  system looking to add another sub and a pair of surrounds to complete my setup. I'm running a Marantz av7705 with two emotiva amps. Basx a300 and basx a500.  The current room size is 12'x19' hope that helps bro....

 

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It is good that you do not have a square room, which is horrible for bass.  I assume you have the front of the setup on the short side of the room and that your seating is away from the back wall. 

 

Have you done the subwoofer crawl to place the single sub?

https://www.svsound.com/blogs/subwoofer-setup-and-tuning/75365187-the-art-of-subwoofer-placement

Rerun Audyssey.  Is this enough?

 

https://www.svsound.com/blogs/videos/why-go-dual-benefits-and-placement-of-multiple-subwoofers

Then try with the 2nd sub, but need to be careful not setting the volume too high. Rerun Audyssey and verify that 2nd sub is not working too hard.

 

One more thing.  Suggest adding ceiling speakers for Atmos rather than adding surround. A 5.1.2 setup will add more to movies than 7.1.  Maybe even go for 5.2.4 ?

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5 hours ago, Snoopy8 said:

It is good that you do not have a square room, which is horrible for bass.  I assume you have the front of the setup on the short side of the room and that your seating is away from the back wall. 

 

Have you done the subwoofer crawl to place the single sub?

https://www.svsound.com/blogs/subwoofer-setup-and-tuning/75365187-the-art-of-subwoofer-placement

Rerun Audyssey.  Is this enough?

 

https://www.svsound.com/blogs/videos/why-go-dual-benefits-and-placement-of-multiple-subwoofers

Then try with the 2nd sub, but need to be careful not setting the volume too high. Rerun Audyssey and verify that 2nd sub is not working too hard.

 

One more thing.  Suggest adding ceiling speakers for Atmos rather than adding surround. A 5.1.2 setup will add more to movies than 7.1.  Maybe even go for 5.2.4 ?

I made a mistake when building my setup. I al;ways thought I wanted my rears elevated aiming down so that is currently where my rears are. Once I get the new speakers I'll place the new ones a little above ear level on the back. So right now you could say I'm running a 3.1.2 setup. If I understand what your saying.

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1 hour ago, Zax said:

I made a mistake when building my setup. I al;ways thought I wanted my rears elevated aiming down so that is currently where my rears are. Once I get the new speakers I'll place the new ones a little above ear level on the back. So right now you could say I'm running a 3.1.2 setup. If I understand what your saying.

No, your setup is still 5.1 as far as the AVR is concerned. It happens that the rears are high.  When I say 5.1.2, the "2" are ceiling speakers for Dolby Atmos. 

 

Dolby's guidelines for 5.1.2 setup

https://www.dolby.com/about/support/guide/speaker-setup-guides/5.1.2-overhead-speaker-setup-guide/

 

More info on Atmos

https://www.digitaltrends.com/home-theater/dolby-atmos-sound/

 

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Two 8 inch sub woofers vs a single 12 is slightly more woofer cone surface area pushing air and maybe a little more oomph going on and if there are 2 subs left and right there can be less feeling of sound coming from one spot so as mentioned even distribution.

 

Mixing two different subs may work but largely an unknown experiment, personally I wouldn’t do it.

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