Worth adding a 3rd Sub? - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 18 Old 05-14-2019, 04:54 PM - Thread Starter
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Worth adding a 3rd Sub?

I'm running 2 PSA v1510df's located up front. I have an old Klipsch KSW-12 sub and was debating on adding it as a nearfield sub located between right surround and sofa. I'm aware of REW, miniDSP and a UMIK microphone but don't own them nor have any experience with them. Thoughts on if this is a good idea to get some additional TR or would be too difficult or a bad fit to integrate in? (plus the extra cost of the mic and dsp)
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post #2 of 18 Old 05-14-2019, 05:51 PM
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Quote:
Originally Posted by flyers10 View Post
I'm running 2 PSA v1510df's located up front. I have an old Klipsch KSW-12 sub and was debating on adding it as a nearfield sub located between right surround and sofa. I'm aware of REW, miniDSP and a UMIK microphone but don't own them nor have any experience with them. Thoughts on if this is a good idea to get some additional TR or would be too difficult or a bad fit to integrate in? (plus the extra cost of the mic and dsp)
Integrating different subs are much harder to do, also if your run an Auto Calibration like Audyssey and others.
The calibration system will set level to match the weaker sub.

Many have been in the same boat, as you are. And once they remove the weaker sub, the superior sub came Alive even with only one sub instead of two (after a new calibration).
Therefore, my suggestion is to remove the Klipsch KSW-12. And enjoy your two PSA

And if still not happy about your TR presence, you could save money to get one more PSA v1510.
That said, if your room is over a concrete foundation.
I would look into this option instead, since Bass sound do not produce much TR over a concrete floor;
Shakers - Simple/Cheap Hookup - Visual Guide


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Last edited by darthray; 05-14-2019 at 06:05 PM.
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post #3 of 18 Old 05-14-2019, 07:02 PM
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Quote:
Originally Posted by flyers10 View Post
I'm running 2 PSA v1510df's located up front. I have an old Klipsch KSW-12 sub and was debating on adding it as a nearfield sub located between right surround and sofa. I'm aware of REW, miniDSP and a UMIK microphone but don't own them nor have any experience with them. Thoughts on if this is a good idea to get some additional TR or would be too difficult or a bad fit to integrate in? (plus the extra cost of the mic and dsp)
Try it and give it a listen. If it sounds better or makes a noticeable improvement then you're golden. If not you're only out a little time.

My two subs aren't nearly as different in capabilities but they are different and running both makes a noticeable improvement over just the more powerful one.

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post #4 of 18 Old 05-15-2019, 08:02 AM
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Just add some transducers/bass shakers and then you will be good to go

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post #5 of 18 Old 05-15-2019, 10:50 AM - Thread Starter
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Room is on a concrete slab foundation. Bass shakers might need to be the way to go to get more TR. Not sure how the wife will feel about cutting the bottom of the sectional. LOL.
Maybe I'll hook up the ksw12 via a splitter and see if notice anything positive. If so then I'll look to pick up a mic and miniDSP to maximize the 3.
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post #6 of 18 Old 05-15-2019, 11:01 AM
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post #7 of 18 Old 05-15-2019, 11:01 AM
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Quote:
Originally Posted by flyers10 View Post
Room is on a concrete slab foundation. Bass shakers might need to be the way to go to get more TR. Not sure how the wife will feel about cutting the bottom of the sectional. LOL.
Maybe I'll hook up the ksw12 via a splitter and see if notice anything positive. If so then I'll look to pick up a mic and miniDSP to maximize the 3.
That is what I did. I have 3 different subs and got a Umik (I have DSP iNukes) and spent some time integrating them. I think it turned out pretty well (mini-marty for ULF, J112 for mid-bass, DIY 15" to smooth over any gaps between the two).
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post #8 of 18 Old 05-15-2019, 11:05 AM
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I would highly recommend taking a look at @trhought "The Hideaway Theater" thread and look at a BOSS build on a mini riser. I just built one myself and it works amazingly well. I've got 2 18" VBSS subs nearfield and the BOSS gives 10x the tactile response. It's very inexpensive too. It is a DIY project, but a very easy one.

I'll try to post the link to that thread, but it never seems to come up right.

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post #9 of 18 Old 05-15-2019, 11:06 AM
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Optimally, you want all your subs to have similar capabilities, but many have had multiple subs with varying capabilities and were happy.
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post #10 of 18 Old 05-15-2019, 11:54 AM
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I would also recommend considering bass shakers. One of the best upgrades I've done for my room

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post #11 of 18 Old 05-15-2019, 03:07 PM - Thread Starter
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Originally Posted by deano86 View Post
Interesting idea. Wife would never allow that (even if carpeted) as this is in our open living room. 😔 But maybe traditional bass shakers might get approval or at least not physically noticed.
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post #12 of 18 Old 05-15-2019, 03:18 PM
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Quote:
Originally Posted by flyers10 View Post
Interesting idea. Wife would never allow that (even if carpeted) as this is in our open living room. 😔 But maybe traditional bass shakers might get approval or at least not physically noticed.
If you do it right, it will hardly be noticable

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post #13 of 18 Old 05-15-2019, 04:10 PM
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Quote:
Originally Posted by flyers10 View Post
Room is on a concrete slab foundation. Bass shakers might need to be the way to go to get more TR. Not sure how the wife will feel about cutting the bottom of the sectional. LOL.
Maybe I'll hook up the ksw12 via a splitter and see if notice anything positive. If so then I'll look to pick up a mic and miniDSP to maximize the 3.
Your floor foundation is the main culprit for your TR problem.
Also may TT options are not very big, so no need to cut the sectional.
Only attach to the frame, and Do require a separate source of Amplification and not from your AVR.

While you could still try your Klipsch KSW-12, near field to see if you have what you are looking for.
I know my self, I would remove it for having the best performance from your dual PSA v1510.
Since I use two TT, even with dual SVS PB13 on my concrete floor cover by heavy carpet.


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post #14 of 18 Old 05-15-2019, 07:47 PM - Thread Starter
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BryceDH thanks for the pic. That's helpful.

Darth, I may have to do same as you did to get what I want.
Any particular brand recommendations? Buttkicker?
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post #15 of 18 Old 05-16-2019, 10:59 AM
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Quote:
Originally Posted by flyers10 View Post
BryceDH thanks for the pic. That's helpful.

Darth, I may have to do same as you did to get what I want.
Any particular brand recommendations? Buttkicker?
The cream of the crop are Crowsons...but, by all reports, the BOSS comes very, very close to the effect the Crowsons give at a small fraction of the price.

Buttkickers are a distant 2nd (for ULF at least).
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post #16 of 18 Old 05-16-2019, 11:22 AM
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Quote:
Originally Posted by flyers10 View Post
BryceDH thanks for the pic. That's helpful.

Darth, I may have to do same as you did to get what I want.
Any particular brand recommendations? Buttkicker?
Yes..Earthquake Sound's Mini quakes.
Don't forget you're going to need an amplifier to drive them or any shaker you decide on.
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post #17 of 18 Old 05-18-2019, 02:41 PM
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I think it is a good idea. I have 4 subwoofers and my Receiver (Pioneer SC-95) has two separate subwoofer outputs with their own calibration curves.

The "main" subwoofers are two Klipsch R-115SW up front and then two near-field units right behind the main seating, Elemental Designs A2-300.
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post #18 of 18 Old 05-20-2019, 09:37 AM
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Originally Posted by scraejtp View Post
I think it is a good idea. I have 4 subwoofers and my Receiver (Pioneer SC-95) has two separate subwoofer outputs with their own calibration curves.

The "main" subwoofers are two Klipsch R-115SW up front and then two near-field units right behind the main seating, Elemental Designs A2-300.
Just to clarify...MCACC Pro does not EQ each sub separately. It will set separate levels and distances, but both subs are EQ'ed "as one".

EQ'ing subs separately is not usually recommended and is best done only via software (i.e. MSO).
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