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post #211 of 232 Old 11-20-2019, 07:14 AM
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Originally Posted by Steve Bruzonsky View Post
Exactly!! HA! HA!

Mark Seaton told me today that he just finished your sub stacks and they sound wonderful - one can't even tell they're there unless there's a reason to hear them - and that's how it should be. Congrats!
I have friction fitted optical glass frames in front of each of my projectors, they were ejected from their spots during the Apollo 11 liftoff. I need to secure some other things also ,there are rattles that I'd not had before in a couple of sconces, door latches etc.

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post #212 of 232 Old 11-20-2019, 09:58 AM - Thread Starter
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Originally Posted by Art Sonneborn View Post
I have friction fitted optical glass frames in front of each of my projectors, they were ejected from their spots during the Apollo 11 liftoff. I need to secure some other things also ,there are rattles that I'd not had before in a couple of sconces, door latches etc.

Art
Now too bad you don't have a video of [email protected]@@

Theater Renovation: 3 Aerial Acoustics 7ts & 6 7LCRs; 13 Triad Rotating Silver/9 Sat; 9 Seaton 21" sealed subwoofers; Trinnov Altitude 32 SSP; 3 Theta Digital Prometheus, Trinnov Amplitude 8 & 8M, and ATI AT526NC amplifiers; Sony VW5000 projector; Lumagen Radiance Pro; Panamorph DCR lens; Stewart Filmscreen Vistascope 14' wide 2.40 SnoMatte 100 screen; Kaleidescape & Pioneer UDP-LX500 4k players; Apple TV 4k; TIVO Bolt OTA.
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post #213 of 232 Old 11-20-2019, 12:59 PM
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Originally Posted by audioguy View Post
You are welcome:

Here is what I am comfortable saying: You will LOVE the amount of ultra clean, ultra tight, ultra extended, mega impactful bass and enormous headroom you will have. Think if me when you are smiling listening to action movies but don't think of me when you are balancing your check book (or when your house falls down)!!

Given the cubic foot difference in our two rooms, you will have the approximate same woofer driver square inches (slightly more) than I do. And it really is nice to know that I will never overtax my LFE channel. Congrats!!! You are easily The new King of Woofage.
Obviously you guys do not visit the DIY speaker and sub section of this forum.
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post #214 of 232 Old 11-20-2019, 01:07 PM
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Obviously you guys do not visit the DIY speaker and sub section of this forum.

Hey, I'm a giant in Lilliput don't rain on my parade.

Art
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post #215 of 232 Old 11-20-2019, 01:08 PM - Thread Starter
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Originally Posted by Mike Garrett View Post
Obviously you guys do not visit the DIY speaker and sub section of this forum.
Obviously you are correct. Apparently I have already been dethroned!

Theater Renovation: 3 Aerial Acoustics 7ts & 6 7LCRs; 13 Triad Rotating Silver/9 Sat; 9 Seaton 21" sealed subwoofers; Trinnov Altitude 32 SSP; 3 Theta Digital Prometheus, Trinnov Amplitude 8 & 8M, and ATI AT526NC amplifiers; Sony VW5000 projector; Lumagen Radiance Pro; Panamorph DCR lens; Stewart Filmscreen Vistascope 14' wide 2.40 SnoMatte 100 screen; Kaleidescape & Pioneer UDP-LX500 4k players; Apple TV 4k; TIVO Bolt OTA.
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post #216 of 232 Old 11-20-2019, 07:01 PM
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I built 4 DIY Stereo Integrity Subs. Everything south of 40Hz was accentuated. Look at DataBass at the efficiency of the driver snd u can see why. Never could get them to produce the mid bass slam that my SubMersives did and sold them!!
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post #217 of 232 Old 11-20-2019, 07:33 PM - Thread Starter
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Originally Posted by Art Sonneborn View Post
Hey, I'm a giant in Lilliput don't rain on my parade.

Art
It may be a few months before I'm up and running - meanwhile you are the GIANT! Once I'm up and running I'll be the GIANT SLAYER! Then once Audioguy decides to dethrone me I'll be THE SLAYED!

Theater Renovation: 3 Aerial Acoustics 7ts & 6 7LCRs; 13 Triad Rotating Silver/9 Sat; 9 Seaton 21" sealed subwoofers; Trinnov Altitude 32 SSP; 3 Theta Digital Prometheus, Trinnov Amplitude 8 & 8M, and ATI AT526NC amplifiers; Sony VW5000 projector; Lumagen Radiance Pro; Panamorph DCR lens; Stewart Filmscreen Vistascope 14' wide 2.40 SnoMatte 100 screen; Kaleidescape & Pioneer UDP-LX500 4k players; Apple TV 4k; TIVO Bolt OTA.
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post #218 of 232 Old 11-20-2019, 08:26 PM
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I can assure you that I will not be increasing the number of subs in my theater!
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post #219 of 232 Old 11-20-2019, 10:20 PM - Thread Starter
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Originally Posted by audioguy View Post
I can assure you that I will not be increasing the number of subs in my theater!
Probably not if your WIFE has anything to say about it! But you can sell all of your 18"ers and put in 21"ers - so far you have not expressly ruled that out! HA!

Theater Renovation: 3 Aerial Acoustics 7ts & 6 7LCRs; 13 Triad Rotating Silver/9 Sat; 9 Seaton 21" sealed subwoofers; Trinnov Altitude 32 SSP; 3 Theta Digital Prometheus, Trinnov Amplitude 8 & 8M, and ATI AT526NC amplifiers; Sony VW5000 projector; Lumagen Radiance Pro; Panamorph DCR lens; Stewart Filmscreen Vistascope 14' wide 2.40 SnoMatte 100 screen; Kaleidescape & Pioneer UDP-LX500 4k players; Apple TV 4k; TIVO Bolt OTA.
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post #220 of 232 Old 11-21-2019, 05:46 AM
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A number of things would need to occur for that to happen: the dimensions of the 21 would need to match that of the 18; and the swap cost would need to be less than or equal to ZERO; and I would need to go back on my word to my wife!!!
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post #221 of 232 Old 11-21-2019, 07:37 AM
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Originally Posted by Steve Bruzonsky View Post
Obviously you are correct. Apparently I have already been dethroned!
When you have a sub system that most people would think you are crazy, just go to the DIY section and you will find that your system is not outrageous at all.
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post #222 of 232 Old 11-21-2019, 07:57 AM
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Originally Posted by audioguy View Post
I built 4 DIY Stereo Integrity Subs. Everything south of 40Hz was accentuated. Look at DataBass at the efficiency of the driver snd u can see why. Never could get them to produce the mid bass slam that my SubMersives did and sold them!!
You need to use something like a miniDSP or an amp with DSP to adjust the frequency response to what you want. That is part of what you pay for, when buying a manufactured sub system. If you took the driver from any manufacturer and just threw it in a box, it would have a humped response. Not sure which SI drivers you had, but the HT-18D2 would require very little shaping to the response curve to get a flat response. Sealed in 6.26CF.
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post #223 of 232 Old 11-21-2019, 08:20 AM
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I used the most expensive driver he had; I used a miniDSP; I had ruler flat response. But FR does not take into account other factors (e.g. driver efficiency). Lots of folks like that sound. I am not one of them!
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post #224 of 232 Old 11-21-2019, 10:39 AM
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Quote:
Originally Posted by audioguy View Post
A number of things would need to occur for that to happen: the dimensions of the 21 would need to match that of the 18; and the swap cost would need to be less than or equal to ZERO;
and I would need to go back on my word to my wife!!!
Chuck,

You did mean to say .......... "again" .......... right


LOL,
Terry
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post #225 of 232 Old 11-21-2019, 10:46 AM - Thread Starter
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Originally Posted by audioguy View Post
A number of things would need to occur for that to happen: the dimensions of the 21 would need to match that of the 18; and the swap cost would need to be less than or equal to ZERO; and I would need to go back on my word to my wife!!!
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Originally Posted by tigerhonaker View Post
Chuck,

You did mean to say .......... "again" .......... right


LOL,
Terry
Chuck, just let her buy something of equal value to the 21" sub upgrade! Works every time like a charm!
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Theater Renovation: 3 Aerial Acoustics 7ts & 6 7LCRs; 13 Triad Rotating Silver/9 Sat; 9 Seaton 21" sealed subwoofers; Trinnov Altitude 32 SSP; 3 Theta Digital Prometheus, Trinnov Amplitude 8 & 8M, and ATI AT526NC amplifiers; Sony VW5000 projector; Lumagen Radiance Pro; Panamorph DCR lens; Stewart Filmscreen Vistascope 14' wide 2.40 SnoMatte 100 screen; Kaleidescape & Pioneer UDP-LX500 4k players; Apple TV 4k; TIVO Bolt OTA.
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post #226 of 232 Old 11-21-2019, 12:56 PM
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Chuck, just let her buy something of equal value to the 21" sub upgrade! Works every time like a charm!
Like a matching 21" sub upgrade?

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post #227 of 232 Old 11-21-2019, 05:47 PM
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Originally Posted by audioguy View Post
I built 4 DIY Stereo Integrity Subs. Everything south of 40Hz was accentuated. Look at DataBass at the efficiency of the driver snd u can see why. Never could get them to produce the mid bass slam that my SubMersives did and sold them!!
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post #228 of 232 Old 11-23-2019, 01:06 PM
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Originally Posted by audioguy View Post
I used the most expensive driver he had; I used a miniDSP; I had ruler flat response. But FR does not take into account other factors (e.g. driver efficiency). Lots of folks like that sound. I am not one of them!
I assume it was one of the 18" HST drivers. That is not the driver to buy if looking for chest slam. The HST driver is good for the deep bass. Something like this http://aespeakers.com/shop/td/td18h/ will give you chest slam.

"Chest Punch!
One of the most prominent effects of high-level low frequency sound is the so-called ‘chest punch’ or ‘chest slam’. The sensation of chest vibration was reported over a broad range of low frequencies, although it seems more commonly pronounced in mid-bass frequencies around 100+ Hz as opposed to lower bass below 50 Hz. One experimenter explained this as being the result of easier induction of vibration on the lung, which is “organized like a balloon and linked to the atmosphere through an airway.” Another researcher suggests that “thoracic cavity resonances may have particularly important effects on sound transmission at frequencies below approximately 250 Hz, where the magnitude of parenchymal attenuation appears to be small.” Abdominal regions were much less susceptible to vibration, and it was deduced that crowding of the internal organs and tissue in the abdomen hinders the induction of vibration. Body fat was also thought to dampen vibration and obstruct its propagation throughout the body. It stands to reason from these findings that the greater one’s hard tissue over soft tissue ratio is, the more affected they will be by sound waves."
https://www.audioholics.com/room-aco...ation-of-sound
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post #229 of 232 Old 11-23-2019, 06:40 PM
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Originally Posted by Mike Garrett View Post
I assume it was one of the 18" HST drivers. That is not the driver to buy if looking for chest slam. The HST driver is good for the deep bass. Something like this http://aespeakers.com/shop/td/td18h/ will give you chest slam.

I did a bit of Ready, Fire, Aim when I decided to go DIY. I only began to learn the importance of the various driver specs AFTER I could not get what I was looking for in the subs that I built. LOTS of folks were praising that driver so I bought them. While I have no doubt I could end up with more satisfying results if I were to go DIY again, that won't happen. The Seaton F18s work and if it is not broken, why try to fix it.
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post #230 of 232 Old 11-24-2019, 05:35 AM
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the magnitude of parenchymal attenuation appears to be small
I need to just throw that out in conversation. Unfortunately, I never experienced a Saturn V liftoff but being pounded in the chest was one of the descriptions one would see given by those who did have the opportunity.

Art

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post #231 of 232 Old 11-24-2019, 07:43 AM
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I need to just throw that out in conversation. Unfortunately, I never experienced a Saturn V liftoff but being pounded in the chest was one of the descriptions one would see given by those who did have the opportunity.

Art
Just in case there was any confusion as to the exact meaning of parenchymal attenuation, I googled it and this should make it completely clear (NOT!)
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post #232 of 232 Old 12-09-2019, 05:48 PM - Thread Starter
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Ten nonsense myths about subwoofers busted!

https://www.audioholics.com/loudspea...nonsense-myths

Theater Renovation: 3 Aerial Acoustics 7ts & 6 7LCRs; 13 Triad Rotating Silver/9 Sat; 9 Seaton 21" sealed subwoofers; Trinnov Altitude 32 SSP; 3 Theta Digital Prometheus, Trinnov Amplitude 8 & 8M, and ATI AT526NC amplifiers; Sony VW5000 projector; Lumagen Radiance Pro; Panamorph DCR lens; Stewart Filmscreen Vistascope 14' wide 2.40 SnoMatte 100 screen; Kaleidescape & Pioneer UDP-LX500 4k players; Apple TV 4k; TIVO Bolt OTA.
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