JBL does not make the proper diaphragms for the 075, You have to use the 2405 and make modifications to achieve the proper air gap. At least this is what I was told my a tech at JBL. 02 …

The 076 driver uses the 2404H phase plug which is 1.720" at the base. If you really wanted to use the 075 diaphragm the plug to use would be the 2404-1 which is 1.600" at the base. All the …

It was originally designed specifically for the L220. It uses a unique diaphragm. I believe that it has a moving mass that is between the 075 and 077. The final model offered by JBL was the …

I know that the fact that JBL 2405, 077, 075, etc. diaphragms are really all the same JBL part number whether they are labeled H or J or 8 ohm or 16 ohm. This has been well documented …

Hi, I need some help considering a pair of JBL diaphragms. One measures 6.3 ohm, the other 6.4 ohm Blue, 2 holes to mount it + one hole that is not punched through. For what kind of JBL …

[quote=Jimbo;200330]My father-in law's 075 tweeters need the diaphragms replaced. I contacted JBL and was told that he could use the 2405 diaphragm if the phase plug was milled down to …

I have posted before about my wife burning up one of my JBL 5 cu'ft cabinets with (modified) S8 components installed, the only modification was the 075 was removed and an 2404 "Baby …

2022年7月13日 · Hi, Does anyone know the model of the replacement diaphragms for the M9500? I saw some D8R2450SL and owner claimed it’s replacement for S9500.

Hello everyone, while surfing through the offers of a well known German musical instrument supplier I've found a genuine JBL D8R2425 diaphragm as well as a Radian 1225-8. They call …

Phil, That's bad advice to give to "hifi". Unscrewing that central phase plug will twist//grind the base of the phase-plug against the inner//central clamping ring of the diaphragm and then …