I have not heard the 4369 yet but I have no doubt they are excellent speakers at the price point. As are the 4367.
The driver in the 4369 is most likely a rebadged 2430K/D2 driver as used in M2/4367 and VRX line array. At least that was confirmed by people who ought to know at the Munich show last year. It has been around for a while and is technologically wise rather similar to pre dating BMS drivers, built upon the same concept.
It seems now to be 2x8 ohm instead of 2x16 ohm as with the D2. It is also labeled "16" instead if "K" as the 4367/M2 driver. JBL uses syllables to designate impedance, starting with "F" that designates a 2-ohm driver. The sticker now says, “Made in China” as the 4367/M2/VTX drivers are all labeled "Mexico. Maybe they made some minor changes if they indeed moved production from Mexico to China. Manufacture or assembly?
The 3” 243x/435 (Be or not) is not really the same beast as the 4” drivers and a technically less complicated (expensive) to produce. The 4” drivers 244x/245x/47x are expensive to build as the phasing plug is cast zink and glued in stages. The ultra expensive 475Be in S9900 and Everest is based upon a upgraded 2451 engine.
Back to 4369, I think the selection of drivers and design is a result of chosen price point rather than what is possible. For the “no expense spared” speakers JBL offers the K2S9900 and Everest. The 4367/4369 were not meant to compete with them and the price reflects that. It will be interesting to follow the launch of the new K2-series later this year in Vienna, if I recall correctly.
The D2/2430 design has been much debated and is a very different design compared to the older single diaphragm models. No doubt that technology advances combined with cost reductions drives development for manufacturers. For the price it is an excellent driver and very close to the 3 to +10 times more expensive 4” drivers (475Be) .
As to size, except for the phasing plug, the size drops significantly when the Neo magnet is placed inside the voice coil as opposed to the outside as in the older drivers. Hence, new drivers that look/feels like toy's can indeed be very capable. Same goes for other Neo magnet drivers, including woofers.
However, in my view the major leap in SQ is the wave guide development. The new waveguides completely do away with the “horn sound” without losing the unrivaled dynamics and micro details of a good compression driver. Dome and cone drivers still can't touch that.
As a side note, we have swapped in 4” drivers in our 4367’s with great success (and many hours in the measuring bench). To do so we had to go active with DSP and basically used the M2 topology as a starting point. I personally prefer the 4367/4369 wave guide type to the M2 (90x100 dispersion) for domestic use (less floor and ceiling bounce).
Note that in a production speaker such change would have priced the speaker out of its intended market with more expensive drivers and additional electronics.
Rock on
//Rob
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