Official JBL CS1214 thread - Replacement for Infinity 1260/1262 - Page 11 - AVS Forum | Home Theater Discussions And Reviews
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post #301 of 324 Old 01-19-2017, 06:21 PM
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Originally Posted by eng-399 View Post
I'm not sure but if I figure it out I'll be sure to post it. It's definitely a cool looking box isn't it. Samps built a box with triangle ports to for the Dayton Pa460 and looked really cool.
I really liked the look of the box as well. The 3 drivers and the box were so inexpensive for the fun i've been having by having 3 x 12's in my home office.

I'm even having crazy thoughts like eventually picking up another 3 drivers and box, and making a 7 ft column in the corner of my office by stacking the new box on the current one. 6 12's in a room that 10x10x8 should be pretty fun.
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post #302 of 324 Old 01-29-2017, 05:14 PM
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64 base level speakers $10k
28 height speakers $10k,
14 subwoofers $10k
90% of the movie sound coming from the center channel - priceless.

Last edited by 1201; 02-01-2017 at 04:37 PM.
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post #303 of 324 Old 01-31-2017, 10:49 PM
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64 base level speakers $10k
28 height speakers $10k,
14 subwoofers $10k
90% of the movie sound coming from the center channel - priceless.

Last edited by 1201; 02-01-2017 at 04:37 PM.
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post #304 of 324 Old 02-13-2017, 12:58 PM
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1201, are you still happy with this setup?
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post #305 of 324 Old 02-13-2017, 02:15 PM
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Originally Posted by bhen View Post
1201, are you still happy with this setup?


ridiculously happy. but it took me learning a few things about subs to get there.


1. don't put a sub on bare wood floor. it rattles. I fixed this by putting workout pads under each speaker.


2. do not excessively boost low end frequencies. this will lead to over excursion and noise.


3. do not run the sub ported without a proper low pass filter. this will overheat the sub at 250 watts.


after fixing these issues, the subs now sound phenomenally good and can go LOUD without breaking a sweat. matter of fact I don't even run a low pass filter on the sealed subs anymore.

64 base level speakers $10k
28 height speakers $10k,
14 subwoofers $10k
90% of the movie sound coming from the center channel - priceless.
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post #306 of 324 Old 02-13-2017, 04:21 PM
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Originally Posted by 1201 View Post
ridiculously happy. but it took me learning a few things about subs to get there.


1. don't put a sub on bare wood floor. it rattles. I fixed this by putting workout pads under each speaker.


2. do not excessively boost low end frequencies. this will lead to over excursion and noise.


3. do not run the sub ported without a proper low pass filter. this will overheat the sub at 250 watts.


after fixing these issues, the subs now sound phenomenally good and can go LOUD without breaking a sweat. matter of fact I don't even run a low pass filter on the sealed subs anymore.
Sweet! Great to hear. I need a new sub setup to match my Behringer 212XLs and with the Infinity 1260/1262s off the market, this seems like the budget DIY way to go for 12"s.

I'm looking to do sealed for nearfield behind the couch and traditional front LFE location.
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post #307 of 324 Old 02-14-2017, 11:15 AM
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Originally Posted by bhen View Post
Sweet! Great to hear. I need a new sub setup to match my Behringer 212XLs and with the Infinity 1260/1262s off the market, this seems like the budget DIY way to go for 12"s.

I'm looking to do sealed for nearfield behind the couch and traditional front LFE location.


I think they are a great bargain. Do at least 4 though.


Im not a fan of speakers behind the couch. they are not efficient. you will get more slam putting them all in front of the mlp imo.

64 base level speakers $10k
28 height speakers $10k,
14 subwoofers $10k
90% of the movie sound coming from the center channel - priceless.
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post #308 of 324 Old 02-15-2017, 03:28 AM
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Originally Posted by 1201 View Post
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Gotta be happy with that Frequency Response. I take it that's just the NF.

My 4 NF behind my couch are pretty far from that

Before you say it, nowhere else for them.
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post #309 of 324 Old 02-15-2017, 05:42 AM
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@markymiles ,I am happy with the response. i dont even equalize the subs anymore.

do you have a graph of your response?

64 base level speakers $10k
28 height speakers $10k,
14 subwoofers $10k
90% of the movie sound coming from the center channel - priceless.
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post #310 of 324 Old 02-15-2017, 07:11 PM
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Originally Posted by 1201 View Post
I am happy with the response. i dont even equalize the subs anymore.
do you have a graph of your response?
Do you have a recent graph? Looks like you deleted a couple posts.
I lost track of what you are running for subs.
Are you using the sealed cabs from Eng?
Where are they located in your room? How man boxes, how many subs?

I agree with your thoughts on near-field subs. Tried a pair of my 12" Infinities in ported boxes behind my seat with their own delay and EQ. All they did was screw up my frequency response and annoy me. I will admit that I didn't put in a ton of effort to make them work though, so I'm in no position to caste doubt on the whole subwoofer massage phenomenon.
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post #311 of 324 Old 02-16-2017, 07:52 AM
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Originally Posted by DavidK442 View Post
Do you have a recent graph? Looks like you deleted a couple posts.
I lost track of what you are running for subs.
Are you using the sealed cabs from Eng?
Where are they located in your room? How man boxes, how many subs?

I agree with your thoughts on near-field subs. Tried a pair of my 12" Infinities in ported boxes behind my seat with their own delay and EQ. All they did was screw up my frequency response and annoy me. I will admit that I didn't put in a ton of effort to make them work though, so I'm in no position to caste doubt on the whole subwoofer massage phenomenon.
hi,
I am running the 4 cs1214s. Im adding 2 um-18s to share the load(this started when I thought the cs1214s were not so good) . turns out I did not set them up correctly.

I built my own sealed boxes ,they have a volume of 3.5 ft3 before driver displacement and bracing. for the fourth one Im using an old, braced jbl box that has a volume of 4.4ish ft3

they are located front left, front center, front right, and one is right side of room nearfield(small room)

I tried behind the listening position with the fourth sub and I actually LOST volume as proven by a rew measurement. using two subs only behind listening also was too easy to locate. if I moved it right behind the couch it was not so locatable but the couch attenuated too much bass. so i only do subs in front of the listening position now.

64 base level speakers $10k
28 height speakers $10k,
14 subwoofers $10k
90% of the movie sound coming from the center channel - priceless.
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post #312 of 324 Old 02-16-2017, 09:19 AM
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btw , here is the response with 1,2,3 and 4 subs at the mlp with no smoothing or eq applied.


64 base level speakers $10k
28 height speakers $10k,
14 subwoofers $10k
90% of the movie sound coming from the center channel - priceless.
1201 is online now  
post #313 of 324 Old 02-16-2017, 06:46 PM
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Quote:
Originally Posted by 1201 View Post
btw , here is the response with 1,2,3 and 4 subs at the mlp with no smoothing or eq applied.


Wow. I'm really surprised that the response for a single sub looks so good. Also suprised that going with four didn't smooth out the trough around 60hz.
Great results for sealed 12's. The bump below 20hz is impressive. You must have a bass friendly room.
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post #314 of 324 Old 02-16-2017, 10:06 PM
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Wow. I'm really surprised that the response for a single sub looks so good. Also suprised that going with four didn't smooth out the trough around 60hz.
Great results for sealed 12's. The bump below 20hz is impressive. You must have a bass friendly room.
that trough around 60hz is persistent. I cant get rid of it without eq no matter how many subs or what placement i try. I was looking at the graphs and wondering why the volume at the dip was increasing as i added subs. a true null wouldnt increase. I think this is good news because it means I may be able to eq it out without going past the excursion limits of the driver.

so i eqd it a little and tested it from -20 db to -5 db in 3 db increments( 4 jbls and 2 ultimax 18s all playing together) and sure enough the dip increased in volume predictably each time, and there were no noticeable increases in distortion around the dip. very good news I think.

the null at 161hz did not respond at all to volume increases. Im stuck with that one. thankfully it doesnt affect the lfe very much

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64 base level speakers $10k
28 height speakers $10k,
14 subwoofers $10k
90% of the movie sound coming from the center channel - priceless.
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post #315 of 324 Old 02-17-2017, 09:34 AM
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Originally Posted by 1201 View Post
@markymiles ,I am happy with the response. i dont even equalize the subs anymore.

do you have a graph of your response?
Sorry tried to find my initial REW plots but seems I have deleted them. Will remeasure at some point.

They work ok and I wanted 4 so all the seats on the couch get a little tactile effect but I'm down one end of the sofa which doesn't help with differing distances from the drivers.

I might just try two on their own behind me.
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post #316 of 324 Old 02-17-2017, 05:41 PM
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I ordered an inuke 3000DSP and 4 woofers are on their way.

Going to go all sealed on the boxes. I don't have room at the front of my room for 4 subs. Probably have to do 2 hidden behind the couch nearfield.
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post #317 of 324 Old 02-17-2017, 10:04 PM
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Imo a must with these drivers. before adding these I could hear vibration around the rim of the basket that would go away if I used my hand and put some pressure on the rim.

takes 1 minute per woofer and a 17ft roll is more than enough to do 4 drivers at a total cost of $3.28 from lowes.




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DavidK442 and Brazle like this.

64 base level speakers $10k
28 height speakers $10k,
14 subwoofers $10k
90% of the movie sound coming from the center channel - priceless.
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post #318 of 324 Old 02-18-2017, 06:38 AM
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I ordered an inuke 3000DSP and 4 woofers are on their way.

Going to go all sealed on the boxes. I don't have room at the front of my room for 4 subs. Probably have to do 2 hidden behind the couch nearfield.
Welcome to the club

why the decision to go sealed? maximum low end extension? a ported box will give you some free output above 20hz at not a huge size assuming you have a way to electronically roll off the very low end under about 15hz

64 base level speakers $10k
28 height speakers $10k,
14 subwoofers $10k
90% of the movie sound coming from the center channel - priceless.
1201 is online now  
post #319 of 324 Old 02-20-2017, 09:38 AM
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Originally Posted by 1201 View Post
Welcome to the club

why the decision to go sealed? maximum low end extension? a ported box will give you some free output above 20hz at not a huge size assuming you have a way to electronically roll off the very low end under about 15hz
I prefer the tighter, more controlled bass, not to mention the simpler design vs modeling/ building ported. With 4 subs running, I won't need the higher output above 20Hz in my room, and would rather not worry about filtering subsonic.
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post #320 of 324 Old 02-20-2017, 01:12 PM
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It's loud, way louder than I thought it would be. The jbls sound kind of off though. I need to do some EQ. I might just bite the bullet and overpay for 4 more infinities if I can't get it dialed in right. Tomorrow I'll know better.

Sent from my Nexus 6 using Tapatalk
Did you ever figure out what was "off" with the woofers? 1201 has advised of a rattle with his subs and recommends weather stripping between the woofer and the cabinet to eliminate. Could that have been your issue?

Also, are you still happy with the nearfield use behind the couch?
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post #321 of 324 Old 02-20-2017, 02:10 PM
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Did you ever figure out what was "off" with the woofers? 1201 has advised of a rattle with his subs and recommends weather stripping between the woofer and the cabinet to eliminate. Could that have been your issue?

Also, are you still happy with the nearfield use behind the couch?
They were trying to dig too low and distorted. I ended up crossing them at 35hz I think and let the 18 handle the low low.

I really enjoy them nearfield, most guests seem to as well.

I've always used gasket tape on them so that wasn't the issue and everything is sealed tight.


Sent from my Nexus 6 using Tapatalk

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post #322 of 324 Old 02-20-2017, 05:25 PM
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Originally Posted by danmn1313 View Post
They were trying to dig too low and distorted. I ended up crossing them at 35hz I think and let the 18 handle the low low.

I really enjoy them nearfield, most guests seem to as well.

I've always used gasket tape on them so that wasn't the issue and everything is sealed tight.


Sent from my Nexus 6 using Tapatalk
What size enclosures did you put them in?
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post #323 of 324 Old Yesterday, 05:25 PM
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I posted some pics of my box with heavy stuffing earlier in this thread
after reading a couple of posts where low end output actually fell with stuffing, I removed all the stuffing in my boxes. I got about 0.5 db below 20hz

after fixing all the source of rattling in these subs I can turn them way up to where my house is shaking and they STILL keep their composure and sound amazing.
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64 base level speakers $10k
28 height speakers $10k,
14 subwoofers $10k
90% of the movie sound coming from the center channel - priceless.
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post #324 of 324 Old Today, 07:49 PM
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What size enclosures did you put them in?
Sorry for the late reply, I'd have to check Mike's build thread but I'm pretty sure each driver has about 1.8-2.0 cubic feet.

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