Official JBL CS1214 thread - Replacement for Infinity 1260/1262 - Page 13 - AVS Forum | Home Theater Discussions And Reviews
Forum Jump: 
 166Likes
Reply
 
Thread Tools
post #361 of 377 Old 12-19-2017, 06:26 AM
AVS Forum Special Member
 
Join Date: Jun 2015
Posts: 1,621
Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 1018 Post(s)
Liked: 356
Quote:
Originally Posted by chadsmith013 View Post
got mine set up...i know its not optimal..but found this perfect box on the local ads for 20 bucks..had to jump on it..I beleive it is 1.0 CF sealed each side..I dont have any measurement tools and all that stuff, but just based on sound..i really liked it..it provided alot of impact and tactile feel..really not bad for a 80 dollar purchase...I have some local buddies from this board gonna come over soon and we will get them dialed in properly..but for now..im very pleased with them so far.
congrats man. youre gonna enjoy it
chadsmith013 likes this.

THANK YOU!!! for your selfless contribution to the audio world
Anders Torger for Brutefir
Thomas Drugeon for Rephase
John Mulcahy for room eq wizard
Denis Sbragion for DRC room correction
Juha Hartikainen for Winisd
1201 is offline  
Sponsored Links
Advertisement
 
post #362 of 377 Old 12-19-2017, 07:59 AM
AVS Forum Special Member
 
chadsmith013's Avatar
 
Join Date: Feb 2010
Location: Jax, Florida
Posts: 4,356
Mentioned: 79 Post(s)
Tagged: 0 Thread(s)
Quoted: 2596 Post(s)
Liked: 2648
Quote:
Originally Posted by 1201 View Post
congrats man. youre gonna enjoy it
thanks man..really liking them so far...also got some VBSS subs being worked on now..using the PA-380 instead of the PA-460..they are going beside the couch and going to double as speaker stands..cant wait to get them added to the mix too...hopefully will sound really good.

Receiver : Pioneer Elite SC-95
Front Speakers: 3 DIYSG 1099's
Surround Speakers:2 DIYSG Volt 10's Atmos: 4 DIYSG Volt 6's
Subwoofers: Dual Eminence NSW 21's in Cyclops enclosures w/Inuke 6000
Nearfield: 4 B-52 SP-1804 18s w/Inuke 6000DSP
chadsmith013 is offline  
post #363 of 377 Old 12-19-2017, 09:15 AM
AVS Forum Special Member
 
EndersShadow's Avatar
 
Join Date: Apr 2009
Location: Indianapolis
Posts: 6,304
Mentioned: 75 Post(s)
Tagged: 0 Thread(s)
Quoted: 1321 Post(s)
Liked: 1568
I played some Halo (the original one) with mine last night and I seriously enjoyed it. Moreso than with my Infinity 1260's and UM18 in the same box.... Can't wait to get my upgrades started sub wise next year.
chadsmith013 and 1201 like this.

My Setup | Custom MiniDSP Build | FS: If its For Sale, find it all (here)
Quote: There exists, for everyone, a sentence - a series of words - that has the power to destroy you. Another sentence exists, another series of words, that could heal you. If you're lucky you will get the 2nd, but you can be certain of getting the 1st. - Philip K. Dick
EndersShadow is online now  
Sponsored Links
Advertisement
 
post #364 of 377 Old 12-23-2017, 09:09 AM
Member
 
nnoble83's Avatar
 
Join Date: Aug 2012
Posts: 38
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
Liked: 16
I have 2 of these each in approx 2 cu/ft boxes. I'm getting an inuke3000dsp in a couple days and was wondering what my initial settings should be. I have never used an inuke before and am new to this. My avr us a Yamaha rx-v867. Thanks
nnoble83 is offline  
post #365 of 377 Old 04-28-2018, 06:42 PM
AVS Forum Special Member
 
EndersShadow's Avatar
 
Join Date: Apr 2009
Location: Indianapolis
Posts: 6,304
Mentioned: 75 Post(s)
Tagged: 0 Thread(s)
Quoted: 1321 Post(s)
Liked: 1568
Posting this here just so all the info is in this thread, but some cool testing done and posted elsewhere on this forum...


Quote:
Originally Posted by Shreds View Post
Sup y'all. I ended up doing an excursion test on the CS1214 and thought it might interest some of you. The wire was measured at exactly 18mm in front of the dust cap so it exceeded that by a little bit but the suspension was at it's limits at this point and it didn't want to go to 19mm.


The burst was done at 7.5Hz and at that frequency this 1214 had an impedance of 4.25 ohms. The burst was captured on the scope:


I got the feeling that the driver soft bottoms but I'm not 100%. I don't enjoy damaging drivers and I could tell that it was getting close to that point if I kept dumping power into it. Anyone out there have experience with these things hard bottoming?

For use in most enclosures (unless IB), you'd have to dump some stupid power (way over manufacturer recommended) into these things before you'd be in a spot to hit excursion limits so the thing to consider is whether you'll thermal the coil with too much juice.
Shreds likes this.

My Setup | Custom MiniDSP Build | FS: If its For Sale, find it all (here)
Quote: There exists, for everyone, a sentence - a series of words - that has the power to destroy you. Another sentence exists, another series of words, that could heal you. If you're lucky you will get the 2nd, but you can be certain of getting the 1st. - Philip K. Dick
EndersShadow is online now  
post #366 of 377 Old 05-25-2018, 08:46 PM
Senior Member
 
Brazle's Avatar
 
Join Date: Jan 2014
Location: Oklahoma City, OK
Posts: 379
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 159 Post(s)
Liked: 196
The CS1214s on for sale from Wal-Mart for $32 at the moment. I just ordered a couple of them.
EndersShadow and Nalleh like this.

HT setup: Vizio 50" 4K | Xbox & PS3 | Pioneer Elite VSX-94TX | Bose 701 towers (V1) | JBL S Center | Def Tech Reference SuperCube & DIY Nearfield cabinet ported UM18 dual ported PA380 ULF+MBM
Brazle is offline  
post #367 of 377 Old 06-05-2018, 09:07 PM
Newbie
 
Join Date: Jun 2018
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 3
That sale for $32 was too good to pass up, so I bought two. Finished (but not finished) the cabinets yesterday.

I'll post images once I've got the post count.

I already had a Crown XLS1502 ready to power them, but I didn't want to spend too much on a project that began as an impulse purchase, so I made it a goal to go as cheap as possible. That meant a single 4x8 sheet of 1/2 inch MDF ($26), two parts-express buyout flared ports (2x $4), four buyout handles (4x $1.35), two terminal cups (2x $1.25), and twenty feet of 1/2 inch dowels ($11) for bracing. With some screws and feet for the boxes, the total ended up being around $120.

Each is 16.5 W x 21 H x 15.75 D, and internally about 2.7 ft^3. That volume combined with the cheapo port, which is not adjustable, gives a tuning frequency of 23 Hz.

They sound fantastic... mostly. The CS1214 drivers sound great; I can't hear any weird scratching or mechanical noises from them even when pushed hard. I was a bit worried about the 1/2 inch MDF, but the dowels prevent excessive vibration on any panel. The port, though, is just not adequate for this box. For everything below 28 Hz, the air velocity is way too high. Next time I'll consider a very long folded slot port. Luckily the XLS1502 has an adjustable high pass, so I've set that to 30 Hz, and now the chuffing is under control.

These are going in the basement, so I may just leave them unfinished. Painting is the least enjoyable part of DIY
Ashun is offline  
post #368 of 377 Old 06-06-2018, 10:41 AM
Advanced Member
 
Zarkoff500's Avatar
 
Join Date: Aug 2017
Location: Seattle
Posts: 643
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 274 Post(s)
Liked: 192
The CS1214 in the 6.25 cft VBSS box at 20 hz works very well.....
woofhead and chadsmith013 like this.
Zarkoff500 is offline  
post #369 of 377 Old 02-10-2020, 12:46 AM - Thread Starter
Member
 
styjp's Avatar
 
Join Date: Mar 2016
Posts: 115
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 51 Post(s)
Liked: 50
Quote:
Originally Posted by Zarkoff500 View Post
The CS1214 in the 6.25 cft VBSS box at 20 hz works very well.....
Hey mate. Do you have any measurements, I am interested in checking out options for a ported sub using the drivers.

Styj
styjp is offline  
post #370 of 377 Old 02-10-2020, 07:50 AM
Advanced Member
 
Zarkoff500's Avatar
 
Join Date: Aug 2017
Location: Seattle
Posts: 643
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 274 Post(s)
Liked: 192
Quote:
Originally Posted by styjp View Post
Hey mate. Do you have any measurements, I am interested in checking out options for a ported sub using the drivers.
No measurements but here is the Winisd model.
Attached Thumbnails
Click image for larger version

Name:	CS1214 6.25 20 hz excursion.jpg
Views:	49
Size:	148.2 KB
ID:	2683254   Click image for larger version

Name:	CS1214 6.25 20 hz SPL.jpg
Views:	52
Size:	154.5 KB
ID:	2683256  
Zarkoff500 is offline  
post #371 of 377 Old 02-10-2020, 11:00 AM - Thread Starter
Member
 
styjp's Avatar
 
Join Date: Mar 2016
Posts: 115
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 51 Post(s)
Liked: 50
Quote:
Originally Posted by Zarkoff500 View Post
No measurements but here is the Winisd model.
Thanks. Will measure tomorrow mine just to all to the discussion as well.

It's been too long since checking out the thread! Are these drivers still being sold in the US? Not available anywhere in Europe.

Styj
styjp is offline  
post #372 of 377 Old 02-18-2020, 04:02 AM
AVS Forum Special Member
 
DavidK442's Avatar
 
Join Date: Apr 2010
Location: British Columbia, Canada
Posts: 1,710
Mentioned: 16 Post(s)
Tagged: 1 Thread(s)
Quoted: 900 Post(s)
Liked: 764
Quote:
Originally Posted by Zarkoff500 View Post
The CS1214 in the 6.25 cft VBSS box at 20 hz works very well.....
Quote:
Originally Posted by styjp View Post
Hey mate. Do you have any measurements, I am interested in checking out options for a ported sub using the drivers.
Hmmm. This thread died right off.
I will post my in room un-equalized measurements to hopefully illustrate a couple points.
Even though I am using an older Infinity Reference 12" driver (made by Harmon, just like the JBL) in slightly smaller boxes of about 4.5 cuft net tuned to 20'ish Hz, they model very similar to the CS1214 in the larger box so I would expect in-room measurements to be comparable.
I am using one of these boxes in each corner of a small room (13'X14') driven by a single Behringer NU3000DSP.
Note that even though this is an efficient design in a small room it still takes 4 drivers and most of the NU3000's power to reach 115db from 20 to 30Hz.
In DIY subwooferdom 115db (reference + some headroom) would be scoffed at, but for my actual movie watching purposes it has always been more than enough.
Going with small sealed boxes would require 3X the number of drivers in the same 4.5 cuft cabinet plus 3X the amplifier power...and likely two dedicated electrical circuits.
Also note that even though I am using four subs located around the room to minimize seat to seat variation there is still considerable differences in response throughout the room.
The yellow trace is dead center in the room and the green measurement is at my center seating location against the back wall. The measured difference is VERY clearly audible.

Attached Thumbnails
Click image for larger version

Name:	Max output Center and Center Back.jpg
Views:	230
Size:	150.5 KB
ID:	2686614  
styjp likes this.

Last edited by DavidK442; 02-18-2020 at 04:05 AM.
DavidK442 is offline  
post #373 of 377 Old 02-19-2020, 05:57 AM - Thread Starter
Member
 
styjp's Avatar
 
Join Date: Mar 2016
Posts: 115
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 51 Post(s)
Liked: 50
Those are actually pretty good considering the price of these subs. Considering my listening levels that 115db be more than enough for me as well. I am debating whether to keep my 8 sealed or spend time, money and effort and build some ported boxes. My room is huge and eats most of the sound and power.

I have posted my in room measurements in the first page if you want to check them out.

Do they still sell these in the US btw?

Styj
styjp is offline  
post #374 of 377 Old 02-20-2020, 10:57 PM - Thread Starter
Member
 
styjp's Avatar
 
Join Date: Mar 2016
Posts: 115
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 51 Post(s)
Liked: 50
Quote:
Originally Posted by DavidK442 View Post
Even though I am using an older Infinity Reference 12" driver (made by Harmon, just like the JBL) in slightly smaller boxes of about 4.5 cuft net tuned to 20'ish Hz, they model very similar to the CS1214 in the larger box so I would expect in-room measurements to be comparable.
Do you have the design of your boxes at hand to share?

Styj
styjp is offline  
post #375 of 377 Old 02-21-2020, 06:29 PM
AVS Forum Special Member
 
DavidK442's Avatar
 
Join Date: Apr 2010
Location: British Columbia, Canada
Posts: 1,710
Mentioned: 16 Post(s)
Tagged: 1 Thread(s)
Quoted: 900 Post(s)
Liked: 764
Quote:
Originally Posted by styjp View Post
Do you have the design of your boxes at hand to share?
JBL apparently has come out with a few iterations of essentially the same driver. CS1214 - CX1200 - GX1200.
I see some places selling the CX1200's but I think the GX1200 is current (I believe it is the same driver, but haven't dug into it.)

There is this thread for the CX1200, but don't mention ported over there or they'll eat you alive with sarcasm and all-knowing "wink-wink" emoticons. https://www.avsforum.com/forum/155-d...y-bestbuy.html

Here is the modelling for my subs. You could go with a smaller, shorter port, but at some point port noise may become an issue.

Attached Thumbnails
Click image for larger version

Name:	12in Ported box design.jpg
Views:	150
Size:	321.0 KB
ID:	2688176  
DavidK442 is offline  
post #376 of 377 Old 02-21-2020, 06:36 PM
AVS Forum Special Member
 
DavidK442's Avatar
 
Join Date: Apr 2010
Location: British Columbia, Canada
Posts: 1,710
Mentioned: 16 Post(s)
Tagged: 1 Thread(s)
Quoted: 900 Post(s)
Liked: 764
Quote:
Originally Posted by styjp View Post
Those are actually pretty good considering the price of these subs. Considering my listening levels that 115db be more than enough for me as well. I am debating whether to keep my 8 sealed or spend time, money and effort and build some ported boxes. My room is huge and eats most of the sound and power.

I have posted my in room measurements in the first page if you want to check them out.

Do they still sell these in the US btw?
I had a quick look at your in room and close mic responses. Is that really a 24db boost applied at 20 Hz?

Depending on how much power you are chucking at them, your 8 eq'd sealed boxes are probably equivalent to 2 or 3 of the large ported boxes down low, but will obviously have more output above 40 Hz.

Good luck with whatever direction you take. I'm in quite a small room, so a different situation from you altogether.

Last edited by DavidK442; 02-22-2020 at 04:41 AM.
DavidK442 is offline  
post #377 of 377 Old 02-21-2020, 11:15 PM - Thread Starter
Member
 
styjp's Avatar
 
Join Date: Mar 2016
Posts: 115
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 51 Post(s)
Liked: 50
Quote:
Originally Posted by DavidK442 View Post
I had a quick look at your in room and close mic responses. Is that really a 24db boost applied at 20 Hz?
You are correct, blame it on my inexperience, this is my first project and I sure learnt a lot.

I just did a cut-only eq and now use the limiter as per the WinISD modelling (around 83vp per channel, 4 sealed per channel) so now I have all the power I need without worrying about wrong boosts and settings.

Didn't have time or any more filters to get it perfectly flat.

I removed the measurements from the first page now because I may lead someone to some trouble with those boosts.
Attached Thumbnails
Click image for larger version

Name:	Untitled.png
Views:	12
Size:	32.0 KB
ID:	2688434  

Styj

Last edited by styjp; 02-22-2020 at 09:53 AM.
styjp is offline  
Sponsored Links
Advertisement
 
Reply DIY Speakers and Subs

Tags
1260 , 1262 , cs1214 , Infinity , Jbl

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off