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post #31 of 1348 Old 11-24-2017, 08:21 PM
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Bought 4 for my van
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post #32 of 1348 Old 11-24-2017, 08:40 PM
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Originally Posted by Rcris View Post
Bought a few of these today at BB, @LTD02 , @eng-399 : can you suggest a box for this driver something similar to Iclops


I’ll model them in the morning once I get to my laptop and see for you.
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post #33 of 1348 Old 11-25-2017, 12:14 AM
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Thanks, I went ahead and bought the woofer and a box they suggested for an additional $59. Ported 12". This is my first build. Any tips on maybe a decent Class D plate amp to pair with this sub would be helpful too! I was looking at this due to cost. Looks like the box comes out to a tad over 2 cubic feet.

http://www.parts-express.com/yung-s...boost--301-508



Looks like using the box above this is the max SPL @ 35hz tune and 250w.





Here is the transfer function


Look about right?

Last edited by 1983weatherby; 11-25-2017 at 04:10 PM.
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post #34 of 1348 Old 11-25-2017, 02:40 PM
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I went ahead and bought another one today. Mine shipped for FREE!
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post #35 of 1348 Old 11-26-2017, 05:21 PM
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Looking to replace my HT sub for two of these JBL's while they are on sale!

My BIC America F12 12-Inch 475-Watt Front Firing Powered Subwoofer keeps blowing fuses (2 months old) apparently a common issue :/ Plan on returning them, thinking of picking up two of these bad boys for $30 a pop why not :P my receiver is a Denon AVR-S510BT 5.2 Channel Full 4K Ultra HD AV Receiver, can anyone tell me if this is doable or what amp(s) I should be looking at? I'm looking forward to building a box for them, or two separate boxes if I end up needing two different amps.

Thanks for posting the sale btw!
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post #36 of 1348 Old 11-26-2017, 07:59 PM
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Quote:
Originally Posted by Scott05 View Post
Looking to replace my HT sub for two of these JBL's while they are on sale!

My BIC America F12 12-Inch 475-Watt Front Firing Powered Subwoofer keeps blowing fuses (2 months old) apparently a common issue :/ Plan on returning them, thinking of picking up two of these bad boys for $30 a pop why not my receiver is a Denon AVR-S510BT 5.2 Channel Full 4K Ultra HD AV Receiver, can anyone tell me if this is doable or what amp(s) I should be looking at? I'm looking forward to building a box for them, or two separate boxes if I end up needing two different amps.

Thanks for posting the sale btw!
Sounds like our build thoughts are very similiar. I planned on using a ported box for one of these and tune to 20hz If possible. Interesting news about your F12, I almost thought about buying one... But your experience has just swayed me to build a box.

My plan was to use a Inuke1000 for an amp and then make a 3 cube box. The 1000dsp gives you more options from what I have read, but I personally have no idea how to use the DSP. Figured if the single sub wasn't enough I could add another sub in box for only another $100 and my time.

I was planning on building a box similar to this once someone could model using WINISD for our jbl cx1200.

http://01966633.com/forum/showthread.php?t=1875953

I am VERY new to this, but that was my plan.

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post #37 of 1348 Old 11-27-2017, 02:51 PM
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Quote:
Originally Posted by Scott05 View Post
Looking to replace my HT sub for two of these JBL's while they are on sale!

My BIC America F12 12-Inch 475-Watt Front Firing Powered Subwoofer keeps blowing fuses (2 months old) apparently a common issue :/ Plan on returning them, thinking of picking up two of these bad boys for $30 a pop why not :P my receiver is a Denon AVR-S510BT 5.2 Channel Full 4K Ultra HD AV Receiver, can anyone tell me if this is doable or what amp(s) I should be looking at? I'm looking forward to building a box for them, or two separate boxes if I end up needing two different amps.

Thanks for posting the sale btw!
your avr probably only has a preamp for the subwoofer so you will need an amp.

Im using one I bought on craigslist that I think is 120w /channel with all channels driven. I have an inuke 6k but I dont like the fan noise in my small room.

if you dont mind fan noise, Inuke 3k should be more than enough for two of these.

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post #38 of 1348 Old 11-27-2017, 03:06 PM
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Quote:
Originally Posted by 1201 View Post
your avr probably only has a preamp for the subwoofer so you will need an amp.

Im using one I bought on craigslist that I think is 120w /channel with all channels driven. I have an inuke 6k but I dont like the fan noise in my small room.

if you dont mind fan noise, Inuke 3k should be more than enough for two of these.

...but unfortunately the 3K is still pretty loud without a fan mod. I have a BenQ W1070 projector and the two compete quite well on the annoyance scale.
Going to install a quieter, slower fan in the Inuke over Christmas and hopefully not burn it up.
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post #39 of 1348 Old 11-27-2017, 05:14 PM
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Picked up 4 for a little lounge chair I am planning on building.

Should be fun.

The spec sheet wouldn't load, so I found this on the Harmon website: CX1200
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post #40 of 1348 Old 11-28-2017, 09:42 AM
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Quote:
Originally Posted by Rcris View Post
Bought a few of these today at BB, @LTD02 , @eng-399 : can you suggest a box for this driver something similar to Iclops

mtg90 measured the t/s parameters on this 1214 and they were a little different from the published specs.


the iclops cab is a little on the small side for the driver and its power handling, so if possible going with a larger cab will perform a little better.

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post #41 of 1348 Old 11-28-2017, 10:41 AM
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post #42 of 1348 Old 11-28-2017, 11:24 AM
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Quote:
Originally Posted by eng-399 View Post
What did you guys want to see with this sub. What size box
If you're taking requests, 1.5 cu ft sealed.

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post #43 of 1348 Old 11-28-2017, 11:42 AM
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If you're taking requests, 1.5 cu ft sealed.
Sorry for the long delay guys here's 1 sub in 4 different size boxes.
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post #44 of 1348 Old 11-28-2017, 11:54 AM
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post #45 of 1348 Old 11-28-2017, 12:05 PM
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Here's 2 of the JBL's in a 8 cubic ft box with three 4 inch ports if this was built it would need something like 9 cubic ft. becuase of the ports,driver, and bracing but you guys get the idea of how it would look.
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post #46 of 1348 Old 11-28-2017, 12:14 PM
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If this had been in the Great Found Deals thread, you would probably have lots more company here.
Sorry I missed it.

Michael

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post #47 of 1348 Old 11-28-2017, 12:30 PM
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Quote:
Originally Posted by eng-399 View Post
4 of these drivers 1.5 cubic ft each 6 cubic ft total
If these model anything like the CS1214's (and IIRC they are basically clones just different dustcaps) they are best used in small sealed boxes. Ported boxes need to be in the 5-6 cubic foot range, minimum for a decent response. And at that size for a 12, you can buy a PA460 and build a VBSS which would outperform it I bet.

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post #48 of 1348 Old 11-28-2017, 01:08 PM
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How do you guys think these would do in a sealed dual woofer cabinet?

I have two of them and trying to figure out my best use for them. I was planning on using at least one near field but thought maybe a dual sub would be cool. Or maybe a passive radiator, although probably not worth it as the radiator would cost way more than the sub. I only need to target a single seating area.

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post #49 of 1348 Old 11-28-2017, 02:52 PM
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Originally Posted by eng-399 View Post
Sorry for the long delay guys here's 1 sub in 4 different size boxes.
So when looking at your graph, is the hz below the box size in the sealed boxes, is that as low as it will play? I am trying to better understand the graphs.

Thanks!
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post #50 of 1348 Old 11-28-2017, 03:00 PM
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...but unfortunately the 3K is still pretty loud without a fan mod. I have a BenQ W1070 projector and the two compete quite well on the annoyance scale.
Going to install a quieter, slower fan in the Inuke over Christmas and hopefully not burn it up.

Yes, that's why I went to a fanless amp.


I did install a quiet fan on one side of my 6k and it quietened it up a lot. since I didn't run the amp hard it never had any problem with overheating or the red light coming on.

Quote:
Originally Posted by EndersShadow View Post
If these model anything like the CS1214's (and IIRC they are basically clones just different dustcaps) they are best used in small sealed boxes. Ported boxes need to be in the 5-6 cubic foot range, minimum for a decent response. And at that size for a 12, you can buy a PA460 and build a VBSS which would outperform it I bet.

agree. I have a cs1214 in a 4 cu ft ported box at 25hz tune and it didn't add a whole lot to the output. all it did was create a burning smell when pushed hard with bass boosted music.

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post #51 of 1348 Old 11-28-2017, 03:22 PM
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So when looking at your graph, is the hz below the box size in the sealed boxes, is that as low as it will play? I am trying to better understand the graphs.

Thanks!


What I modeled is from 10hz and up.
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post #52 of 1348 Old 11-28-2017, 03:24 PM
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If these model anything like the CS1214's (and IIRC they are basically clones just different dustcaps) they are best used in small sealed boxes. Ported boxes need to be in the 5-6 cubic foot range, minimum for a decent response. And at that size for a 12, you can buy a PA460 and build a VBSS which would outperform it I bet.


I was under the impression that these where the same drivers from what Matt posted.
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post #53 of 1348 Old 11-28-2017, 03:39 PM
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I was under the impression that these where the same drivers from what Matt posted.
http://www.jbl.com/on/demandware.st...0(English).pdf
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post #54 of 1348 Old 11-28-2017, 04:30 PM
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I started a thread looking for help with my set-up involving these subs if anyone cares to throw in their 2 cents but I'll deff read up on everything here too :P

http://01966633.com/forum/155-di...l-ccx1200.html
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post #55 of 1348 Old 11-28-2017, 04:31 PM
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post #56 of 1348 Old 11-28-2017, 04:55 PM
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this driver is the exact driver as the JBL CS1214 I just looked at both technical data sheets thanks for the link though
Cool beans! Good to know...

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post #57 of 1348 Old 11-28-2017, 06:11 PM
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real world comparison in my room of these subs ported vs sealed

the ported box is about 4.4 cu with a 25hz tune, the sealed box is about 3.3 cu.

I run two of these sealed.

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post #58 of 1348 Old 11-28-2017, 07:12 PM
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real world comparison in my room of these subs ported vs sealed

the ported box is about 4.4 cu with a 25hz tune, the sealed box is about 3.3 cu.

I run two of these sealed.

Actual in room measurements...YES!
I am surprised that the sealed has such a flat response across the sub-bass range. Yeah room gain! Still, giving up 6db in the lowest octaves seems like a big deal. If you don't need the extra output though I can see the allure of the smaller, simpler sealed build.
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post #59 of 1348 Old 11-28-2017, 09:20 PM
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So you put one in here:
http://www.parts-express.com/open-b...touts--302-822
or two in here:
http://www.parts-express.com/dayton...vinyl--302-835
Fantastic. Sorry I missed it.
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post #60 of 1348 Old 11-28-2017, 09:46 PM
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Quote:
Originally Posted by DavidK442 View Post
Actual in room measurements...YES!
I am surprised that the sealed has such a flat response across the sub-bass range. Yeah room gain! Still, giving up 6db in the lowest octaves seems like a big deal. If you don't need the extra output though I can see the allure of the smaller, simpler sealed build.

it would seem so on the surface but there is a lot more that needs to be taken into consideration.

at max output, the ported sub will have over excursion and that can lead to trouble.

so, you have to add a high pass filter, which means several things
a. you have to have a way to add a high pass filter. most AVRs cannot do this so the ported sub needs dsp of some kind
b. adding the filter removes some or your gains and further kills any hope of output below the tuning point
c. adding that filter raises the group delay to high heaven

in addition, in the box sizes that have been mentioned here, to keep the port velocity low enough, at 4 cu ft and max output, you would need 2x 4" ports at 37.87" each, or 3x 3" ports at 32.22" each(assumed 20hz tune). the ports probably wont even fit in the box.

so you are absolutely right that sealed is a lot simpler

THANK YOU!!! for your selfless contribution to the audio world
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Thomas Drugeon for Rephase
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