Taming the HS-24 - Page 9 - AVS Forum | Home Theater Discussions And Reviews
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post #241 of 402 Old 04-11-2016, 09:26 PM
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Originally Posted by baniels View Post
Wow. That looks amazing.

Nick - what's the depth from the magnet to the back of the mounting flange? Magnet still the same diameter?
Dimensions are definitely different. Larger motor, deeper motor, etc. I'll call you with the differences when I get back to the shop.
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post #242 of 402 Old 04-11-2016, 09:57 PM
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"Rockbiter" DO SI18 sub build - https://www.avsforum.com/forum/155-d...o-si-18-a.html
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post #243 of 402 Old 04-12-2016, 06:46 AM - Thread Starter
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Okay - let me know.

The bracing could fit a magnet up to 11.0" in diameter. But the back of the magnet could only grow about 1.5" before it bottoms out on the braces. But that could be solved with another baffle layer, or some chiseling if it's close. I'll make it work.



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Dimensions are definitely different. Larger motor, deeper motor, etc. I'll call you with the differences when I get back to the shop.
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post #244 of 402 Old 04-12-2016, 10:08 AM
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Quote:
Originally Posted by baniels View Post
Okay - let me know.

The bracing could fit a magnet up to 11.0" in diameter. But the back of the magnet could only grow about 1.5" before it bottoms out on the braces. But that could be solved with another baffle layer, or some chiseling if it's close. I'll make it work.

WOW! What a build!!! What do those drivers weigh?

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post #245 of 402 Old 04-13-2016, 07:46 PM
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Quote:
Originally Posted by baniels View Post
Okay - let me know.

The bracing could fit a magnet up to 11.0" in diameter. But the back of the magnet could only grow about 1.5" before it bottoms out on the braces. But that could be solved with another baffle layer, or some chiseling if it's close. I'll make it work.

It should still fit. I'll try to grab measurements tomorrow when I get back to the shop. My new car broke down yesterday while giving my father a test-ride but the semi-local VW specialist repair shop fixed the one broken shift cable today by 5 PM so I'm going to pick it up tomorrow morning and resume being able to go to work.
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post #246 of 402 Old 04-13-2016, 11:18 PM
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Gorgeous work thus far on this project, your bracing is inspiring!


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post #247 of 402 Old 04-14-2016, 05:26 AM
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Quote:
Originally Posted by Electrodynamic View Post
It should still fit. I'll try to grab measurements tomorrow when I get back to the shop. My new car broke down yesterday while giving my father a test-ride but the semi-local VW specialist repair shop fixed the one broken shift cable today by 5 PM so I'm going to pick it up tomorrow morning and resume being able to go to work.
Your new car broke down while giving your father a test drive? That's an omen!

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post #248 of 402 Old 04-14-2016, 10:00 PM
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Mounting depth is 15.5" and the OD of the magnet slugs is 240 mm for the HS-24 mkII.

@baniels
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post #249 of 402 Old 04-14-2016, 10:30 PM
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Baniels are you using standard screws to mount this 24"?

And Nick are you using all the same soft parts?

I ask because I was just wondering if the front will look the same as usual. I am assuming yes but figured I would ask in case you had a special CF cone already in place.
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post #250 of 402 Old 04-15-2016, 03:04 PM - Thread Starter
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No, I'm using threaded inserts. See here.

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Originally Posted by chrapladm View Post
Baniels are you using standard screws to mount this 24"?
D

Last edited by baniels; 04-18-2016 at 07:32 AM.
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post #251 of 402 Old 04-15-2016, 07:51 PM
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Quote:
Originally Posted by chrapladm View Post
Baniels are you using standard screws to mount this 24"?

And Nick are you using all the same soft parts?

I ask because I was just wondering if the front will look the same as usual. I am assuming yes but figured I would ask in case you had a special CF cone already in place.
From the front it will look exactly the same. Same soft parts, etc.
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post #252 of 402 Old 04-15-2016, 07:56 PM
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Ben, here are the parameters for your driver:

Re: 3.6 Ohms
Fs: 19.6 Hz
Qes: 0.50
Qms: 6.4
Qts: 0.47
Le: 4.2 mH
Sd: 212943 mm^2
BL: 28.47
Vas: 459 L
Mms: 924 g
Cms: 71
SPL: 90 dB

I recommend 8 to 10 ft^3 sealed and it only needs a 13 ft^3 box to reach a 0.707 alignment so your enclosures are perfect.
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post #253 of 402 Old 04-18-2016, 06:22 AM
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post #254 of 402 Old 04-19-2016, 08:15 AM
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Is there a link/price for this new 24" subwoofer?

I'm looking for a companion for my 21" Maelstrom to help pressurize a rather large room and even out the bass frequency at the main seating position. But I also don't have thousands to spend on subs...
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post #255 of 402 Old 04-19-2016, 08:28 AM
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Originally Posted by Lonely Raven View Post
Is there a link/price for this new 24" subwoofer?

I'm looking for a companion for my 21" Maelstrom to help pressurize a rather large room and even out the bass frequency at the main seating position. But I also don't have thousands to spend on subs...
Well well...somebody wants their sub and eat it too???

When you start getting into super sub territory, it's more of a novelty item... Novelty = pay to play. Why don't you just pick up a few 18's... if $Xk for a single sub is a hard pill to swallow.

Not sure what SI's new 24's are going for, but if it is any indication compared to the original 24's, I wouldn't doubt if it is encroaching on $2K.

Just my speculative assumption.
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post #256 of 402 Old 04-19-2016, 09:32 AM
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Originally Posted by popalock View Post
Well well...somebody wants their sub and eat it too???

When you start getting into super sub territory, it's more of a novelty item... Novelty = pay to play. Why don't you just pick up a few 18's... if $Xk for a single sub is a hard pill to swallow.

Not sure what SI's new 24's are going for, but if it is any indication compared to the original 24's, I wouldn't doubt if it is encroaching on $2K.

Just my speculative assumption.
Yeah, a pair of 18" is a logical backup plan. Assuming they can perform anywhere near my 21"

Thanks for the suggestion!
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post #257 of 402 Old 04-19-2016, 10:31 AM
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Think you will be safe with any of the SI 18's they offer or any of their bigger drivers. As you would with the M*ch 5 18's and 21's. Sorry to mention the other guy Nick.
The new SI 18 that replaced the HT18 (DS4-18) looks nice especially at that price.

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post #258 of 402 Old 04-19-2016, 12:21 PM
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Originally Posted by Iron Maiden View Post
Think you will be safe with any of the SI 18's they offer or any of their bigger drivers. As you would with the M*ch 5 18's and 21's. Sorry to mention the other guy Nick.
The new SI 18 that replaced the HT18 (DS4-18) looks nice especially at that price.
Haaahaha... Like it's a curse word... That's ****ing funny as ****...
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post #259 of 402 Old 04-19-2016, 07:29 PM
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Think you will be safe with any of the SI 18's they offer or any of their bigger drivers. As you would with the M*ch 5 18's and 21's. Sorry to mention the other guy Nick.
The new SI 18 that replaced the HT18 (DS4-18) looks nice especially at that price.
Correct if you want safe levels of performance. But if you want massive performance from a single driver the HS-24 is tough to beat. You'll need more than a pair of 18's to best the performance of a single 24 over a broad bandwidth. And who doesn't like seeing a single 24" driver staring them in the face when they walk into the room? I know I like it.

But without digressing and throwing chum out to the lurking sharks, Ben I should be able to build your second new HS-24 mkII driver next week. After I build it I'll need to build shipping crates for them but your drivers and uniquepattern's are next on my list.
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post #260 of 402 Old 04-20-2016, 11:00 AM
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I say that trying to convince myself that 21's and 18's are good enough for me simply because your 24's are out of my budget!!! lol
I sure would love them sitting in my front stage though. Something about that mounting flange. So damn sexy. Wish all your subs used that type of frame.

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post #261 of 402 Old 04-20-2016, 09:49 PM
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I say that trying to convince myself that 21's and 18's are good enough for me simply because your 24's are out of my budget!!! lol
I sure would love them sitting in my front stage though. Something about that mounting flange. So damn sexy. Wish all your subs used that type of frame.
I contemplate reinforcing my attic for a DO IB install after every 24" woofer I build. There are positives and negatives. Positive - more bass. Negative - my neighbor(s) would be pissed off. Additional positive - one of my neighbors is an a$$ hole and deserves every bit of missed sleep that he has delivered to me with his frat-party antics last year.

24's are just so brutal down low that it is hard to not utilize them in my small theater room. I need to reinforce the attic to support the DO IB alignment though. Maybe one day.
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post #262 of 402 Old 04-20-2016, 11:07 PM
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Nick are you going to have three different 24's available for purchase? So BHS, HS and Mk2?
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post #263 of 402 Old 04-20-2016, 11:58 PM
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Nick I am loving my 4 HST-18 in a 4 cu ft box. They are near field. Can you elaborate on this new 24 sub? Is the MKII better than the BHS? So in terms of best does it go like this..HS then BHS then HSMKII? Pm me a price of 4 of your best of the best 24's.
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post #264 of 402 Old 04-20-2016, 11:58 PM
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Originally Posted by chrapladm View Post
Nick are you going to have three different 24's available for purchase? So BHS, HS and Mk2?
Good question...good question! Might as well tell him about the fourth (no longer) top secret version you have been building specifically designed for horn loading.
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post #265 of 402 Old 04-21-2016, 07:05 PM
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Nick I am loving my 4 HST-18 in a 4 cu ft box. They are near field. Can you elaborate on this new 24 sub? Is the MKII better than the BHS? So in terms of best does it go like this..HS then BHS then HSMKII? Pm me a price of 4 of your best of the best 24's.
The HS-24 mkII will simply replace the current HS-24. The HS-24 mkII has a little more linear excursion (38 mm), weighs 10 lbs more than the current model, but the mkII has a larger stronger motor and has better Qtc alignments meaning it works better in "small" sealed enclosures of 10 ft^3 or so.

The BHS is still the big-daddy with its 4" coil with 4" tall windings, 42 mm Xmax, 4,000 watt power handling and 230 lb shipping weight. The BHS-24 can also be ported in a fairly reasonable sized ported enclosure of 20 ft^3. It is an absolute monster in every way. But it is HEAVY! As you're reading this you might be saying "oh, it's just a little heavier" but know and understand that you will NEED two people to mount a BHS-24. It is simply too heavy for a single person to mount regardless of how strong you think you are. That is, not without damaging the enclosure or the driver. Handling a BHS-24 is like trying to pick up a 15 ft^3 refrigerator by yourself - it's size makes the weight difficult to move on your own.

I know you asked me to PM you but it is hard for me to keep track of business dealings using PM's so I don't use PM's. Shoot me an email about what you have in mind for the 24's and I'll help you decide on which model is best suited for your application.
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post #266 of 402 Old 04-21-2016, 07:06 PM
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Good question...good question! Might as well tell him about the fourth (no longer) top secret version you have been building specifically designed for horn loading.
HEY! Don't you start any crap on here! No fourth version. No soup for you!
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post #267 of 402 Old 04-22-2016, 02:27 AM
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Quote:
Originally Posted by Electrodynamic View Post
The HS-24 mkII will simply replace the current HS-24. The HS-24 mkII has a little more linear excursion (38 mm), weighs 10 lbs more than the current model, but the mkII has a larger stronger motor and has better Qtc alignments meaning it works better in "small" sealed enclosures of 10 ft^3 or so.
Nick that is awesome news. A better version than the already amazing HS24 and all at the same price. Whatever that is now. LOL. No but seriously, I think thats great news that the mkII will still be the same price as the HS24. I was afraid the mkII was going to be more expensive than the HS24.
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post #268 of 402 Old 04-22-2016, 11:24 AM
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Nick that is awesome news. A better version than the already amazing HS24 and all at the same price. Whatever that is now. LOL. No but seriously, I think thats great news that the mkII will still be the same price as the HS24. I was afraid the mkII was going to be more expensive than the HS24.

Where do you see mention of price? Just because the new version replaces the old, it doesn't mean it will be the same price. It could be, but he didn't say that. Wishful thinking?
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post #269 of 402 Old 04-22-2016, 06:51 PM
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Where do you see mention of price? Just because the new version replaces the old, it doesn't mean it will be the same price. It could be, but he didn't say that. Wishful thinking?
Very acute observation. The HS-24 mkII will only be around $75 more than the current model. The motor costs more and it is a little heavier so it will cost a little more to ship but no big price increase.
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post #270 of 402 Old 04-22-2016, 08:03 PM
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I currently have 3 Danley DTS-10 which are modded with the LMSR-12. If I were to do 4 BHS-24 in a sealed say 8 cubic ft enclosure what can I expect? Is a crest pro 9200 which has 2200 w @ 4 ohm enough to power one per each channel?
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