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Ah, then definitely go for a pair of LVX12s over a single LVX15. Absolutely. If you want a sweet spot bigger than a basketball hoop, you'll need two subs in a small sealed room.
The smaller the room actually the greater the need for dual subs for dealing with modes.

@Rythmik @enricoclaudio a while back I believe Brian mentioned that a slightly improved driver was on the way for the LVX. Is this the case or was I dreaming? Details?
 

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You should try Lion Gaurd, some good bass in there!
My wife and I love The Lion Guard, Miles from Tomorrowland, Elena of Avalor, and Sofia the First. Once my son discovered Paw Patrol he has no interest in any other shows anymore. We have to force some variety for our own sanity. He'll be 4 in two weeks.
 

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My wife and I love The Lion Guard, Miles from Tomorrowland, Elena of Avalor, and Sofia the First. Once my son discovered Paw Patrol he has no interest in any other shows anymore. We have to force some variety for our own sanity. He'll be 4 in two weeks.


Haha yeah I hear ya. We just got my son into Arthur. Unfortunately it is severely lacking in the bass department
 

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I typically listen to TV and movies below -10 dB (that is, 10 dB below the 0 dB reference as calibrated by Audyssey in my old Denon AVR-X4000). Mostly I listen at -20 or -25 dB. The two subs (I always recommend at least a pair in a small closed room like you and I have because of room modes) add the realism to the sound -- from just a car door closing to a major explosion.

What you'd get from bigger subs is the capability to reach higher SPL. You'd need this in a bigger open plan room, or if you like to really turn it up (I know people who listen at or above reference level, and crank the subs up even higher; these people need the bigger subs to keep from running into compression and distortion). But at moderate levels, in a sealed room the size you suggest, I think you'd probably never know you had spent the extra money. I know I wouldn't.
Your report that you listen to movie and TV soundtracks at a level of -10dB below reference or louder reminds me that I should report and interesting development with my listening levels since I got my FV18s. When my subwoofer was a single Hsu VTF-3 MK3 Turbo, I virtually never listened at levels louder than about -15dB. After I got my FV18s configured, though, I learned that increasing the level to -7.5dB would more often than not produce thrilling movie theater type sound with crisp high notes and rumbling, tactile LFE. Thus, on movie disks, with lossless soundtracks I set the level at at least -7.5dB and sometimes as low as -5db. Haven't checked the SPL again since the check I did immediately after I got everything configured but at that time the max SPL was about 110dB. That's about the loudest these old ears are comfortable with.
 

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I measured about 5 minutes using an iPhone SPL app at the Dolby AMC Cinema I saw the new Pirates of the Caribbean flick at this past weekend. I wound up with this.



At home when I get around those levels (~ -5MV) the sound gets a bit harsh and is just plain too loud. I find it odd that I never feel like it's too loud at the theater, but at home those same volumes do cause me to wince a bit and I usually turn it down to around -10 to -15 for movie watching at home.
 

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I measured about 5 minutes using an iPhone SPL app at the Dolby AMC Cinema I saw the new Pirates of the Caribbean flick at this past weekend. I wound up with this.



At home when I get around those levels (~ -5MV) the sound gets a bit harsh and is just plain too loud. I find it odd that I never feel like it's too loud at the theater, but at home those same volumes do cause me to wince a bit and I usually turn it down to around -10 to -15 for movie watching at home.
I usual get much higher levels. We usually attend Cinemark XD, Dolby Cinema, or ewuivalent.

Shouldn't you use C-weighting? You should also calibrate your phone SPL meter vs your UMIK-1.
 

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I usual get much higher levels. Shouldn't you use C-weighting?

You should also calibrate your phone SPL meter vs your UMIK-1.


Ah not sure what A or C weighting are? Also how would I calibrate the phone meter vs the UMIK-1?
 

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Ah not sure what A or C weighting are? Also how would I calibrate the phone meter vs the UMIK-1?
This is the phone meter I prefer using. It has a CAL button for calibration.


I would recommend using 50Hz, 1KHz, and 10kHz for the reference points. You can use whatever you want.
 

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Haven't checked the SPL again since the check I did immediately after I got everything configured but at that time the max SPL was about 110dB.
IIRC, 0 dB reference (Dolby definition) is supposed to max out at around 105 dB. But for equal loudness across the frequencies, that means the bottom end has to be up considerably higher. The Dolby specification bumps the LFE channel +10 dB to max out at 115 dB. Last time I looked at the Robinson Dadson curves I seem to remember 20 Hz needed to be around 115-120 dB to match loudness with 3000Hz at 100 dB more or less, so what Dolby is suggesting makes at least a little sense.

That said, when you get up to 100 dB, I'm the guy asking to turn it down. At 110 dB I'm already out the door. I'm just not interested in chancing any damage to my ears. I'll be in hearing aids soon enough, no reason to rush it. :eek:
 

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That said, when you get up to 100 dB, I'm the guy asking to turn it down. At 110 dB I'm already out the door. I'm just not interested in chancing any damage to my ears. I'll be in hearing aids soon enough, no reason to rush it. :eek:
Above 90dB average at the movies with dialog scenes is too loud for us (we will ask for refunds). We actually take earplugs to church as their volumes are often worse than the movies (we attend a predominantly African-American church).

@enricoclaudio what standards do you go by for your church's SPL levels?
 

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At home when I get around those levels (~ -5MV) the sound gets a bit harsh and is just plain too loud. I find it odd that I never feel like it's too loud at the theater, but at home those same volumes do cause me to wince a bit and I usually turn it down to around -10 to -15 for movie watching at home.
Love the idea of an SPL meter on my phone. Google Play Store has dozens. I need to figure out which one will actually work for me. Don't know why I haven't already loaded one. Sigh...

I hear what you hear. It can be louder at the movies without feeling bad, but at home it gets harsh and "overloaded" sounding. I always thought that was a function of room volume and room treatment. Most theaters are bigger in several directions that the wavelength at 20 Hz (17m), so room modes aren't a problem. Anyway, at home I usually listen at -10 to -25 dB, depending on the content, and depending on who's with me in the room at the time.
 

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I learned that increasing the level to -7.5dB would more often than not produce thrilling movie theater type sound with crisp high notes and rumbling, tactile LFE
I agree. At louder level, movies make me jump more making it more exciting. It scares the crap out of me lots of time which makes it fun.
 

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At home when I get around those levels (~ -5MV) the sound gets a bit harsh and is just plain too loud.
Time to get into high sensitive compression horn speakers. It could be that your B&W speakers are tapping out at -5MV. For demo, I took my MV to 0 and my system does not sound harsh. It is loud though.
 

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Time to get into high sensitive compression horn speakers. It could be that your B&W speakers are tapping out at -5MV. For demo, I took my MV to 0 and my system does not sound harsh. It is loud though.


Agree, for me it is now the opposite since I got my PSA MTMs. I have never listened this loud and I want to keep going louder, it's only when I look at the MV on the AVR do I realize that I need to stop


Sent from my iPhone using Tapatalk
 

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Above 90dB average at the movies with dialog scenes is too loud for us (we will ask for refunds). We actually take earplugs to church as their volumes are often worse than the movies (we attend a predominantly African-American church).

@enricoclaudio what standards do you go by for your church's SPL levels?
I agree that 90dB is more than enough for average dialog. The 110dB SPL I was referring to was the max output. Fortunately, there isn't too much of that. I should add, that when I said the max was 110dB, I was wondering whether it hadn't been 105dB, instead. Call me a weasel, but there it is.
 

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It should be kept in mind that in order to accurately measure the SPL output of systems with high end subwoofers in them, it is necessary that the the SPL meter be capable of Z weighting. The only SPL meter I have, which is capable of that, is the one built in to REW.
 

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Well, I just ran some content I am familiar with after getting the PSA monitors up, everything sounds great and the horns are more mellow than the Klipsch, which is what I hoped for. Oh, and FV15HP's still hit 115 dB (at 10 feet away) at reference volume on the city battle in bayformers 1 ;)
 
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