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Discussion Starter #4
If I remember right, I think the cost was $4k for one. Considering the cost of the driver and amp, that is a really good deal. The driver alone is $1600. In most commercial subs, the driver cost constitutes a minor fraction of the end price, even though it is the most critical part in determining the sub's performance. That, of course, makes this a sub with performance as the absolute highest priority. $4k is pricey, of course, but considering the amount of air displacement it offers for the dollar, it really is a bargain. It would be the most powerful sealed sub that I know of, likely far surpassing even the JTR S2.
 

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If I remember right, I think the cost was $4k for one. Considering the cost of the driver and amp, that is a really good deal. The driver alone is $1600. In most commercial subs, the driver cost constitutes a minor fraction of the end price, even though it is the most critical part in determining the sub's performance. That, of course, makes this a sub with performance as the absolute highest priority. $4k is pricey, of course, but considering the amount of air displacement it offers for the dollar, it really is a bargain. It would be the most powerful sealed sub that I know of, likely far surpassing even the JTR S2.
And the speaker power amp retails for around $1500. So driver is $1600 and amp is $1500. That is only around $900 left for box design and construction and profit margin. Unless he can obtain better deals on the above pricing than is advertised. Still sounds like quite a reasonable price if $4000 is correct. Given that the speaker power amp is only available to OEM's and is an awesome amp, this could be challenging to replicate in DIY (at that price).
 

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I have two of these in my room and have pictures posted in the Deep Sea Sound thread..

Compared to what I have heard/had in my room, these are the real deal and a game changer. :D
 

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ShadyJ - Loved your post - I resemble that remark! Then again, there are many that resemble that remark on AVS. :) It was great meeting and talking with you. I liked the SI HS24 driver so much when I heard it, I decided to start a company around it. I believe it is that good and I'm glad to hear others agree.
 

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I'll post pics in the Deep Sea Sound thread.
ShadyJ, thanks for stopping by the room again today and thanks for donating your two test CD's to me to use at my house. That one track that dropped down to the single digits was just nuts. I took a video of that track and I'll upload it after I get some rest and am able to post it tomorrow. Even though it looks and sounds impressive we were still only tickling the 24's at 1" or maybe 1.5" of total cone travel even at the deepest moments in that track. :)
 

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Discussion Starter #11
ShadyJ, thanks for stopping by the room again today and thanks for donating your two test CD's to me to use at my house. That one track that dropped down to the single digits was just nuts. I took a video of that track and I'll upload it after I get some rest and am able to post it tomorrow. Even though it looks and sounds impressive we were still only tickling the 24's at 1" or maybe 1.5" of total cone travel even at the deepest moments in that track. :)
Glad you enjoyed it. By the way, here is a post I made with info about that pipe organ track, but I will just repost it here:
Saint-Saëns: Organ Symphony, excerpt from second movement (Poco Adagio). The infamous track 1 from Hsu's demo CD which they send with some of their subs models. Here is a description:Quote:WARNING: When playing this track for the first time, lower the volume, as your woofers may be at risk. The bottom octave of this recording may damage vented or planar loudspeakers. (The opening string passage should be quite soft.) Boston Civic Symphony conducted by Max Hobart, James David Christie, organist. Two AKG 414 ORTF cardioids, about the third row in Boston’s Jordan Hall, spring 1983. This was one of the last times that the Jordan Hall organ, already showing signs of serious asthma, was heard in a public performance. [Micha Schattner]


Here is a spectral analysis of one of the infrasonic passages:


As you can see, a massive 16 Hz note, produced from a 32' organ pipe, a CCCC, meaning its a C note four octaves below middle C (middle C is 261.6 Hz). However, it is such a clean note it does not sound as thunderous as one would expect, but when it hits it gives the song such underlying presence. I will add it is a very beautiful recording. You can get the recording from the Boston Acoustic Society, or you could just buy one of Hsu's subs.
A funny bit of trivia for anyone reading this thread: the guy who made the SI24 driver literally developed nausea after repeatedly listening to this tune on his own product, and not because its a bad tune, but because of the physical effects of such powerful sustained deep bass!
 

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Glad you enjoyed it. By the way, here is a post I made with info about that pipe organ track, but I will just repost it here:


A funny bit of trivia for anyone reading this thread: the guy who made the SI24 driver literally developed nausea after repeatedly listening to this tune on his own product, and not because its a bad tune, but because of the physical effects of such powerful sustained deep bass!
Thanks for the graph. It is a huge sustained note focused right at 16 Hz. And yes, having fun with that note one one of David's Deep Sea Sound 24" offerings literally made me feel sick after playing the track three times in a row.

Coincidentally I played the same track on my home DO HST-11 subwoofer system to find out that I have an air leak around one screw that holds down the woofer. Time to pull each screw and seal the surround again one-by-one. :)
 

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Discussion Starter #13
Before you get carried away with the track again, you should think about taking some dramamine- that might help with the nausea. Perhaps that is an accessory Dave can sell with the Marianas, dramamine pills specially formulated to prevent bass sickness; it does fit in with the 'deep sea' theme of the company name! :D
 

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Before you get carried away with the track again, you should think about taking some dramamine- that might help with the nausea. Perhaps that is an accessory Dave can sell with the Marianas, dramamine pills specially formulated to prevent bass sickness; it does fit in with the 'deep sea' theme of the company name! :D
ShadyJ, your two demo disks are nuts.

Here are screen shots of various music tracks from your disks on my DO HST-11's:

WTF:



Beginning of a track:



More into the track:



Intro to the organ track:



Further into the track:



And the end of the track:

 

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ShadyJ, thanks for stopping by the room again today and thanks for donating your two test CD's to me to use at my house. That one track that dropped down to the single digits was just nuts. I took a video of that track and I'll upload it after I get some rest and am able to post it tomorrow. Even though it looks and sounds impressive we were still only tickling the 24's at 1" or maybe 1.5" of total cone travel even at the deepest moments in that track. :)
Okay Nick, I think you've had enough time to rest up. I know there's others just like me waiting to see this video you've mentioned!...lol :D
 

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Discussion Starter #17
Your spectragrams are way better than mine! I really should get into Spectrum Lab, but I would need a decent mic first. And yeah, I can see that Skyfall scene has some serious bass now. That scene is a doozie.

By the way, if you wanted to see some pictures of some of the exhibits from AXPONA, I made a thread with lots of pics here. However, I have to warn you there is a monster at the end of that thread which you may recognize, so tread carefully.
 

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Discussion Starter #19
Great video! But that's not the pipe organ track, that one is called Bassline Terrorthon. And that sucker is plunging down to the single digits, probably one of the few things that we could play which could cause visible cone movement with the 24. Here is a spectragram of that passage, as it descends in frequency- note my spectral analysis program does not draw below 10 hz, but you can easily see there is a lot of energy in the single digits after a certain point:


By the way, I found your thread at data-bass.com about your DO HST-11, that thing is awesome! The amount of displacement you are getting from those woofers is amazing. I can't believe there there would be a subwoofer anywhere in the world that could beat it for the performance/size. Really nice work on that one!
 

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Great video! But that's not the pipe organ track, that one is called Bassline Terrorthon. And that sucker is plunging down to the single digits, probably one of the few things that we could play which could cause visible cone movement with the 24. Here is a spectragram of that passage, as it descends in frequency- note my spectral analysis program does not draw below 10 hz, but you can easily see there is a lot of energy in the single digits after a certain point:


By the way, I found your thread at data-bass.com about your DO HST-11, that thing is awesome! The amount of displacement you are getting from those woofers is amazing. I can't believe there there would be a subwoofer anywhere in the world that could beat it for the performance/size. Really nice work on that one!
Yeah I realized that I uploaded the wrong video so I edited the post accordingly. I'm uploading the pipe organ track video right now. It should be live in less than one minute.
 
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