Speaker Repair, JBL 2412, 2412H, EON, TR, JRX, Replacement Diaphragm Installation by Simply Speakers

In this video, we show the installation and repair of the JBL 2412H driver by replacing the diaphragm. This driver is used in many popular JBL Speaker Systems, including the EON10, JRX, TR, and SoundFactor models.
Speaker diaphragm JBL 2412 style used in this video:
D-2412-PL:
www.simplyspeakers.com/jbl-re...
We also stock the all metal JBL 2412 style diaphragm here:
D-2412
www.simplyspeakers.com/jbl-re...
Shop all of our speaker diaphragm repair kits. America's # 1 brand since 1992!
www.simplyspeakers.com/replac...

[@simplyspeakers]

On some JBL models, you can access the driver by removing one of the handles in the side of the cabinet.

[@simplyspeakers]

Hello, You must remove the woofer, then unscrew the horn driver from the back of the plastic horn from inside the cabinet. Hope this helps. Sean

[@simplyspeakers]

Some versions do use the FerroFluid.

[@simplyspeakers]

We sell the metal type now. No more plastic. The metal style tends to last longer. Even if you cannot see damage, there can be an issue causing low output or no output. Sometimes the crossovers may have an issue too.

[@FIGGY909]

Hi, I have a set of JBL Jrx 115 , this past weekend my tweeter was making noise and at the end of the night the tweeter went completely out, Do you think I just need to replace the Diaphragm?

[@djencee]

How do you remove the driver from the cabinet?

[@eldom20]

Great video, helped me a lot. I have a question. Besides replacing the diaphragms, I also had to replace the audio resistors from the crossovers because they were burnt. The resistors are 10-watt, 16-ohm; i already soldered new ones and the twitters sound like new. But just to make sure, what can cause a resistor to burn? Thanks!

[@simplyspeakers]

eldom72 Too much power is always the culprit

[@fabiuh991]

how does the original diaphragm look like? ive seen several shapes, and what about the voice coil does it have flat or round wire? Thanks

[@simplyspeakers]

The JBL 2412 diaphragm is just like the video shows it. We have other models which are different. Some use round wire, other use edge-wound. It all depends on the actual design.

[@grudainc]

I removed my drivers by unscrewing the handle on jrx 125 and 112m. Anyway how much for 2 of these diaphragms

[@organeu]

the new diaphragm is a JBL or O.E.M ? thanks a lot.

[@djwoodis]

hi what did you use to test the driver what the name and wear can i buy one

[@simplyspeakers]

Simpson 420 function generator. You can find them on eBay, etc.

[@MrBonger88]

No need to measure with pink noise after like with the large format drivers to make sure they are seated properly?

[@simplyspeakers]

Yes, we test all repairs on a signal generator when complete. These particular diaphragms are self-centering, so it is rare to have any rub or scrape issues when complete.

[@engbok]

HI, i have 2 units of JBL EON1500 and i realized one of the tweeter sound very weak and caused whole speaker lack of hi mid frequency. When i open up the driver, i didn't see the breakage in the diaphagm as shown in your video. May i know: 1) The weaker response is it caused by the spoilt diaphagm or magnet? 2) There is after market diaphagm around, some are in black plastic and some are in metal plate, does this two make a different in quality and sound? Thanks.

[@simplyspeakers]

You will need a new horn diaphragm. Give us a call or go to our website to order. Part # D-2412. Thanks!

[@simplyspeakers]

These are an aftermarket version, but same specs as JBL.

[@azisghojin8187]

what is the size of the tweeter spool

[@simplyspeakers]

1" (25mm)

[@jaygallegos7728]

replaced this part and speakers still sound terrible, would you recommend changing the crossover ?

[@simplyspeakers]

Yes, for sure. Try the crossover. There must be a failing component or loose connection somewhere.

[@simplyspeakers]

See our website here for details on current prices. Use the search box at the top of the page and enter your model number. Thanks!

[@thebestofall007]

Why don't they use ferrofluid cooling on those?

[@hgffrank]

exactly what I was thinking