S

SamW

Enthusiast
I recently bought a Velodyne DSP 10" subwoofer which replaced an Infinity PS8 subwoofer. The Velodyne is amazing for me...but now I just have the Infinity sitting in a closet. The Infinity wasn't a bad sub...so now I'm wondering if I hook up the Infinity with a Y splitter will that diminish or enhance the sound of my primary sub?

Does the "if some is good, more is better" rule apply to subwoofers?

Or will the limitation of my system now be lowered to the ability of the lower level sub?
 
avaserfi

avaserfi

Audioholic Ninja
Your Velodyne probably has a line out from which you could run a RCA to your old Infinity. This would not diminish your main sub both would work together but as always placement is extremely important.
 
gmichael

gmichael

Audioholic Spartan
Your Velodyne probably has a line out from which you could run a RCA to your old Infinity. This would not diminish your main sub both would work together but as always placement is extremely important.

Agreed. But often it can be challenging to integrate 2 different subs in one system. Not that it can't be done.

Have you thought of starting a second system in your bedroom?
 
avaserfi

avaserfi

Audioholic Ninja
Agreed. But often it can be challenging to integrate 2 different subs in one system. Not that it can't be done.
It can be hard but if a low crossover is being used (below 80hz) it shouldn't be too bad. Just stack the two subs if possible or position them as close to each other as possible and they will probably integrate pretty well if their loudness levels are equalized.
 
gmichael

gmichael

Audioholic Spartan
It can be hard but if a low crossover is being used (below 80hz) it shouldn't be too bad. Just stack the two subs if possible or position them as close to each other as possible and they will probably integrate pretty well if their loudness levels are equalized.
It won't hurt to try.
 
no. 5

no. 5

Audioholic Field Marshall
Just stack the two subs if possible or position them as close to each other as possible and they will probably integrate pretty well if their loudness levels are equalized.
Co-locating only increases output (not that that is a bad thing), it should be fairly easy to integrate the two subs that way, but if you want to try taming response issues, the subs can't be co-located.
 
D

Dolby CP-200

Banned
Mutual coupling, subs in arrays is the way towards excellence.:)
 
avaserfi

avaserfi

Audioholic Ninja
Co-locating only increases output (not that that is a bad thing), it should be fairly easy to integrate the two subs that way, but if you want to try taming response issues, the subs can't be co-located.
Very true. If you want to use two subs to tame frequency response having them on opposite ends of the listening area with opposing phases should help. Toy with location and settings until you have the optimal sound.
 
D

Dolby CP-200

Banned
And use the SPL db metre plugged into an RTA with the SPL placed at the listening position and use size wave tones, as well as an EQ 1/3 octave and make the necessary adjustments use cuts to reduce peaks or bass tarps to smoothen out the frequency response.:)
 
j_garcia

j_garcia

Audioholic Jedi
With two subs that are significantly different in output, you will basically be limited by the capabilities of the weaker of the two subs... calibration of this type can be tricky.
 
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SamW

Enthusiast
Second in another room

Have you thought of starting a second system in your bedroom?

Unfortunately my family already complains about the loudness I have coming out of the first room...so I've been relegated to confining my "TV Stuff" to one room.

Some really great advice coming from the post though!!

I'm going to try the RCA output from my primary sub and then stacking the two...see how it sounds...then maybe try some of the other suggestions.
 
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SamW

Enthusiast
Calibration

With two subs that are significantly different in output, you will basically be limited by the capabilities of the weaker of the two subs... calibration of this type can be tricky.
If I hook up the two and the first is now limited to the capabilities of the second - how would you calibrate that? Or would you recommend at that point scrapping the second?
 
Sheep

Sheep

Audioholic Warlord
I have the DPS-12, and no where on it is a line out... You'll need a Y splitter from your amp.

On the the question at hand, 2 different subs work, but they need to be placed properly. Try putting the Infinity behind or near the couch, and the Velodyne in a front corner.

I tried a similar setup with the weaker sub by the listening point and it turned out very well.

SheepStar
 
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SamW

Enthusiast
No line out

I have the DPS-12, and no where on it is a line out... You'll need a Y splitter from your amp.

SheepStar
You're right...I went to try it and while I was looking for it you were posting...didn't take but 10 seconds to realize it...I'll have to get a Y splitter when I'm out later today.
 
j_garcia

j_garcia

Audioholic Jedi
If I hook up the two and the first is now limited to the capabilities of the second - how would you calibrate that? Or would you recommend at that point scrapping the second?
When you calibrate them to the same level (so that you don't double up bass), you will hear both of them. When you crank it up, if the lesser of the two has audible distortion and the other does not, you end up being limited by the weak link. I would say try it out for sure and see how it goes, because they may work fine together.
 
gmichael

gmichael

Audioholic Spartan
I have the DPS-12, and no where on it is a line out... You'll need a Y splitter from your amp.

On the the question at hand, 2 different subs work, but they need to be placed properly. Try putting the Infinity behind or near the couch, and the Velodyne in a front corner.

I tried a similar setup with the weaker sub by the listening point and it turned out very well.

SheepStar
I like this idea the best. Putting the smaller one closer keeps it from being the weakest link.
 
Last edited:
Gimpy Ric

Gimpy Ric

Moderator
Hey Guys, how about this; The PS-8 has an 8" driver, so cross it over up high, say 80 hz, then set the larger more powerful subs crossover at say 50 hz, thus relieving the velo of mid bass.

Gee, where did that idea come from? :D (Thanks Dr. Hsu!)
 
no. 5

no. 5

Audioholic Field Marshall
On the the question at hand, 2 different subs work, but they need to be placed properly. Try putting the Infinity behind or near the couch, and the Velodyne in a front corner.

I tried a similar setup with the weaker sub by the listening point and it turned out very well.
I like it, and having one of the suds nearfield should add some bass "punch".
 
S

SamW

Enthusiast
It Works!! Thanks All!

...2 different subs work, but they need to be placed properly. Try putting the Infinity behind or near the couch, and the Velodyne in a front corner. SheepStar
Got the Y splitter...messed with a hundred combinations of crossovers, placements, and volume adjustments and in the end Sheep's suggestion worked best! The larger Sub is next to the TV and the smaller one is close to the couch. Interestingly the "sweet spot" for the one by the couch is perpendicular to the one by the TV and set against the wall just behind the couch line.

Volume with the smaller can be set lower so it doesn't crash when the system volume is higher.

Lesson for me - when it comes to dual subwoofer placement the 3 most important things are: location, location, location.

My system now:
Samsung DLP 61" 1080p TV, Denon 887 Receiver, HD VIP622 DVR Satellite Receiver, Sony Blu Ray BDPS301, Toshiba HD-A2 HD DVD, Klipsch Quintet, Two Rear Polk speakers, Harmony Logitech 880 Universal remote, Velodyne DPS10 Subwoofer and finally...

...an Infinity PS8 Subwoofer.
 

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