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post #271 of 2556 Old 05-03-2018, 08:19 AM
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Originally Posted by LastButNotLeast View Post
I'm aware of that. This is different. I'm running something like this (only mine is now 12 instead of 15 hehehehe)

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post #272 of 2556 Old 05-03-2018, 09:10 AM
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It would add more to feel than sound at that frequency.
Intro to Edge of Tomorrow, for example.
Michael

Did you really need to quote that entire post in your reply?
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post #273 of 2556 Old 05-03-2018, 09:11 AM
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Originally Posted by EndersShadow View Post
I'm aware of that. This is different.
I'm just pointing out another way of accomplishing the same thing.
As long as it works.

Did you really need to quote that entire post in your reply?
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post #274 of 2556 Old 05-03-2018, 09:19 AM
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Originally Posted by LastButNotLeast View Post
I'm just pointing out another way of accomplishing the same thing.
As long as it works.
Not really. The thread you linked is only useful for ported boxes. Since most of us are running sealed, we have no high pass filter we are trying to push down lower.

It does show a shelf filter, but its being used in conjunction with a highpass filter, which isnt the same.

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post #275 of 2556 Old 05-03-2018, 02:01 PM
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Originally Posted by EndersShadow View Post
I'm aware of that. This is different. I'm running something like this (only mine is now 12 instead of 15 hehehehe)
Jiminy crickets Ender! I like it.

Having headroom for those low-shelf boosts is a beautiful thing. Things are actually getting better with my mum so I hope to get REW up and running in the next weekend or two and post some graphs and also try my hand at JRiver...
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post #276 of 2556 Old 05-03-2018, 05:56 PM
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Quote:
Originally Posted by EndersShadow View Post
I'm aware of that. This is different. I'm running something like this (only mine is now 12 instead of 15 hehehehe)
Yeah, i am probably at about the same boost with mine.

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post #277 of 2556 Old 05-22-2018, 06:43 AM
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Im seriously considering running 8 of the cs1214's behind my couch, or 4 in each front corner stacked floor to ceiling.

As far as amp goes, crown xls2502 was my thought. so 300 watts a peice, or a inuke 6000?

Seem like a good idea? Box size around 1.25 cuft each sealed? or larger?

EDIT: btw, all these will replace my other subwoofer for my main source of bass. Nearfield would probably be best? Also it looks like 1.7 cuft per?

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post #278 of 2556 Old 05-22-2018, 02:14 PM
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I was going to run 4 of them in a box and started out thinking 1.7cuft each (I read where someone else was doing that). Playing around with it in Winisd you can get the Qtc down to 0.707 at 4.2cuft each. Not having built a DIY yet myself, I'm not sure if it's sonically worth chasing a Qtc of 0.707. Maybe someone else will chime in. The resulting enclosure volume for 4 drivers would be 16.8cuft which is still doable for me. Oh, and cone excursion is a *thing* at that size but it looks like 1.7cuft each is ok (no hpf needed). So would the addition of the required hpf for the larger enclosure size (to chase Qtc of 0.707) negate the benefits? I don't know. I probably just need to start building these things and learning for myself how things sound
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post #279 of 2556 Old 05-22-2018, 02:22 PM
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For the price it's a brilliant idea. I'll just answer you here @trilkb . Yes 4 of those 1214's should match and slightly exceed one UM-18.....as long as you put them in the right size box. I'd definitely go larger than 1.25. If you can do 1.7 or 2cuft per driver then you can easily drive them to Xmax too.

I have 16 behind my couch but 8 would definitely be enough as I haven't gotten them to Xmax yet. I can say without a doubt 8 of em in 1.7-2cudft driven by an iNuke or Crown will be pretty damn good. Now if you could do 4 in each corner and another 8 behind you I promise you'll never upgrade again.
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post #280 of 2556 Old 05-22-2018, 06:07 PM
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Thanks for the reply!

I'm going after better room response, it's always a downfall to running one sub. Plus listening to music is rare but sealed subs do so much better then low ported subs.

Just to clarify on amps, either will work and you don't need a highpass filter? (I really like that idea). And ~2 cuft per sub sealed is good to go. Just so if anyone reads this they know recommended box sizes.

I may meet halfway and run 4 nearfield and 2 in each front corner lol. It's hard for me to grasp the reason to run anything else if you're running something big nearfield. 8 nearfield seems better then 4 nearfield and 4 upfront in my mind, the 4 upfront are more effective nearfield so why run them? I am curious how 4 and 8 compares to my quadhorn, that thing blew my mind when i first got it going and it still does from time to time. I use an ottoman and it gives great tactical feel with my horn, heck the couch does too. I'm only good safely to 18/19Hz though and would like to go lower safely

The 8 12s seems like a great all around option for music/movies/midbass/ULF it's rare to have potentially one big box on one amp that can do everything.

- 6 BA CR6 array center channel, QSC AD-S82 L/R, 4 jbl 8330a surr , 8 jbl 12" subs w/Inuke 6000. JVC rs420, Denon x4000, Sony x800 -

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post #281 of 2556 Old 05-22-2018, 07:08 PM
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Well, i am up and running with 12 of these now.



4 of them was very good, but this is on another level. They really push you in the back! As nearfield and 4 or more, these are unbeatable. And i am at ~ 1.1 ft3 pr driver.

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post #282 of 2556 Old 05-22-2018, 07:51 PM
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Well, I rarely run my Raptors since the upstairs sounds like it's gonna collapse every time they're on. One disadvantage to having them on a concrete slab in a basement and the upstairs a suspended floor. It's the reason I think most guys on here run these asinine near-field subs. Yours truly included.

However, I'd *never* advise someone to run near-field only. Nothing sounds better than multiple subs spaced around the room to create a flat response with a curve down low if wanted. The bass will envelop you as opposed to just beating you up from behind. It's the best of both worlds basically. If your only option is 8 drivers total then I would go with 4 near-field and 2 each in the front corners.

As far as amps go you could use either as long as the subs in the front are equidistant to the MLP and run them as one sub to one channel of the Crown at 4ohms.
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post #283 of 2556 Old 05-22-2018, 07:52 PM
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Quote:
Originally Posted by Nalleh View Post
Well, i am up and running with 12 of these now.



4 of them was very good, but this is on another level. They really push you in the back! As nearfield and 4 or more, these are unbeatable. And i am at ~ 1.1 ft3 pr driver.
Yah I thought at 1cuft per I'd miss out a little but when they're 1" away you miss nothing.
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post #284 of 2556 Old 05-22-2018, 10:20 PM
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Quote:
Originally Posted by Nalleh View Post
Well, i am up and running with 12 of these now.
4 of them was very good, but this is on another level. They really push you in the back! As nearfield and 4 or more, these are unbeatable. And i am at ~ 1.1 ft3 pr driver.
Great job on the boxes. Very professional build and finish.
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post #285 of 2556 Old 05-23-2018, 07:17 AM
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Originally Posted by Madaeel View Post

However, I'd *never* advise someone to run near-field only. Nothing sounds better than multiple subs spaced around the room to create a flat response with a curve down low if wanted. The bass will envelop you as opposed to just beating you up from behind. It's the best of both worlds basically. If your only option is 8 drivers total then I would go with 4 near-field and 2 each in the front corners.
Agreed. If i mute just my farfield sonos, and play just the nearfields, there is something missing. Clear difference, so you need more than nearfields.

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Yah I thought at 1cuft per I'd miss out a little but when they're 1" away you miss nothing.
Correct. Besides you can give them a little Low Shelf to help them out. Works wonders Better to have more drivers in small boxes, and just use EQ and amp to compensate.

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Great job on the boxes. Very professional build and finish.
Thanks. Almost a shame to hide them behind the couch

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post #286 of 2556 Old 05-23-2018, 10:13 AM
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So 4 near field and 4 up front may be my answer if I do make the move. My room is only like 1700cuft lol. I guess I could try to place one behind the left and right couch seats and since im normally in the middle by myself i can get 2 close to there. Im so close to pulling the trigger on the subs just because I dont think ill find a deal like this again. Thought my horn was my 2nd to last build and my last build would be a 2nd horn!

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post #287 of 2556 Old 05-23-2018, 05:48 PM
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Well, ordered 4 12s to go behind my couch. 32$ a pop from walmart, 10$ tax, free shipping.

Since everyone is saying to run something upfront I'm just going to keep my quadhorn up there. It's no slouch.

As for amp my plan is to sell my inuke 1000 and minidsp 2x4 and get an inuke3000dsp. I'll run my quadhorn off one channel at 4 ohm and run these 4 cs1214s on the other at 4ohm. Series a pair to 8 and parrallel the pairs back to 4.

Not sure when I'll build the boxes but they are ordered and it's planned!
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post #288 of 2556 Old 05-23-2018, 07:52 PM
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Thanks for the heads-up. I bought 4 of these when they were $43. I may pick up 4 more at $32 each and put 8 behind the sofa. Nice.

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post #289 of 2556 Old 05-24-2018, 05:07 AM
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thats pretty much the reason I bought them, good stuff cheap doesnt last!

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post #290 of 2556 Old 05-24-2018, 10:21 AM
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Originally Posted by Madaeel View Post
Now if you could do 4 in each corner and another 8 behind you I promise you'll never upgrade again.
Riiiiight, just one more, and THAT'S IT. I promise!
I won't ever drink again! Tonight. UNless ....
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post #291 of 2556 Old 05-25-2018, 01:28 PM
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This thread is very inspiring. I'm currently contemplating selling my single PB-13 to fund 8 GT-X1200's. I can't find them as cheap here in the UK as they are sold for over in the US unfortunately.

What is the smallest size cabinets I can get away with for sealed enclosures.
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post #292 of 2556 Old 05-25-2018, 02:10 PM
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Originally Posted by Mashie Saldana View Post
This thread is very inspiring. I'm currently contemplating selling my single PB-13 to fund 8 GT-X1200's. I can't find them as cheap here in the UK as they are sold for over in the US unfortunately.

What is the smallest size cabinets I can get away with for sealed enclosures.
Nice

Well, several of us are using ~ 1.0 to 1.2 ft3, and it works very well, 1.0 is also in the JBL manual. But you can calculate 1.2 as the driver occupies 0.1 ft3 and bracing probably the same, to end up at 1.0 net volume.

BTW, to all reading this thread, just to show these aren’t just midbass, here is a REW curve i did the other day. Granted there is EQ involved here, both to pull it down at the top and boost in the low, but it can be done. And this is nearfield vs farfield(sonos are 2x SI18HT in dual opposed config in each sono).

They work down to below 10hz !!


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post #293 of 2556 Old 05-25-2018, 05:40 PM
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Nice

Well, several of us are using ~ 1.0 to 1.2 ft3, and it works very well, 1.0 is also in the JBL manual. But you can calculate 1.2 as the driver oppucies 0.1 ft3 and bracing probably the same, to end up at 1.0 net volume.
BTW, to all reading this thread, just to show these aren’t just midbass, here is a REW curve i did the other day. Granted there is EQ involved here, both to pull it down at the top and boost in the low, but it can be done. And this is nearfield vs farfield(sonos are 2x SI18HT in dual opposed config in each sono).
They work down to below 10hz !!
Holy cahonies! Would be interesting to see a distortion plot at various output levels for those near-fields.
One can do amazing things with lots of cone and lots of power.
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post #294 of 2556 Old 05-25-2018, 06:08 PM
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Any guess what 4 can go down to?

- 6 BA CR6 array center channel, QSC AD-S82 L/R, 4 jbl 8330a surr , 8 jbl 12" subs w/Inuke 6000. JVC rs420, Denon x4000, Sony x800 -
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post #295 of 2556 Old 05-25-2018, 06:26 PM
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Any guess what 4 can go down to?
The correct question would be "What can 4 go up to?" as in output.
Flat to 10 Hz would appease even the most crazed sub-bass junky.
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post #296 of 2556 Old 05-25-2018, 06:38 PM
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Any guess what 4 can go down to?
The curve would be the same, just with less SPL capacity.

But again: this is WITH eq, and NOT the native respons.

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post #297 of 2556 Old 05-26-2018, 03:33 AM
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Quote:
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Nice

Well, several of us are using ~ 1.0 to 1.2 ft3, and it works very well, 1.0 is also in the JBL manual. But you can calculate 1.2 as the driver occupies 0.1 ft3 and bracing probably the same, to end up at 1.0 net volume.
Thanks, that should be a practical size to work with.
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post #298 of 2556 Old 05-26-2018, 06:33 AM
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Quote:
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Any guess what 4 can go down to?
The curve would be the same, just with less SPL capacity.

But again: this is WITH eq, and NOT the native respons.
Right, I plan to eq. I'd be happy with 10hz for sure. But yea like stated I guess the spl matters. Being nearfield and my listening habits I don't think I'll need crazy loud output, but I want to safely go below 20hz because technically that's where my horn should be highpassed, I've just never done it lol. I need to learn about inuke dsp over the next few slow work days!
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post #299 of 2556 Old 05-26-2018, 07:07 PM
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Quote:
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I

Hmm, spec says sealed box volume 1.0 ft3 and includes driver displacement. As the driver displacement is 0.1 ft3, does that mean 0.9 ft net volume?

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post #300 of 2556 Old 05-26-2018, 07:26 PM
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Quote:
Originally Posted by Nalleh View Post
Hmm, spec says sealed box volume 1.0 ft3 and includes driver displacement. As the driver displacement is 0.1 ft3, does that mean 0.9 ft net volume?
Looks like you have to start all over again and redo your boxes....

Actually since we are using these in a HT, the spec's listed for the boxes are fairly worthless.

With WinISD we've beaten this driver to death in models, and then backed the models up fairly well with REW.... So I think we all know the limits of these drivers at this point

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