Is the only difference between the 2426H and J version the diaphragm and coil ? In other words, can I convert a J to an H by simply fitting the correct diaphragm ?
Thanks,
Pete
Is the only difference between the 2426H and J version the diaphragm and coil ? In other words, can I convert a J to an H by simply fitting the correct diaphragm ?
Thanks,
Pete
Yes indeed. It is that simple.
Allan.
And apparently they measure the same too.
DIY Array, 2242 sub, 4408, 4208, Control 8SR, E120 Guitar cab, Control 1, LSR305.
Some further illumination (not intended as a correction, per se):And apparently they measure the same too.
a 2426J with an H diaphragm will measure as a 2426H (impedance and amplitude vs. frequency)
as it it now a 2426H in all respects other than the sticker/foilcal/white paint on back cover.
A 2426J will not measure the same as a 2426H or a 2426J with an H diaphragm.
So in other words, the impedance (G,J or H) is determined by the diaphragm alone. You're good to go.
DIY Array, 2242 sub, 4408, 4208, Control 8SR, E120 Guitar cab, Control 1, LSR305.
Since everyone is already talking diaphragms, maybe I can get some advice, I recently got my hands on a pair of 2426H drivers (both stamped with 2426H), but i notice a sound difference, so measure impedance on both and one measures 4.8 ohms and the other one 7.8 ohms, from past experience that I have measure he 2426J models they usually have about 7.8 ohms, I'm thinking that the 2426H model was repaired with 16ohm diaphragm from a 2426J model, what do you guys think? any advice? I would nt want to use them like that, should I change the diaphragm back to an 8ohm for the 2426H?
Thanks.
If you don't 't need them right away then https://www.parts-express.com/JBL-D8...8-Ohm-294-4013
Otherwise a pair of these would work but with less HF extension and a more 'old school' sound.
https://radianaudio.com/collections/...1225-diaphragm
Lots to discuss here...
D8R2425 has a green dot on the negative terminal (red) which causes backward diaphragm motion. Red dot is D16R2425.
When stating the titanium diaphragm has greater high frequency extention, that is simply not true. The diaphragm has an audible secondary resonance of 8KHz when swept at 16KHz. What is mistaken for high frequency extension is actually resonance distortion from the diamond pattern surround titanium suspension and thinner dome. The Radian diaphragm has MUCH less secondary distortion due to the proprietary aluminum alloy dome and the mylar surround. The JBL titanium diaphragms benefit greatly from a light coating of Aquaplas to reduce audible secondary resonances of the .002" thick diaphragm construction. The major advantage of the titanium diaphragm is the tensile strength should the diaphragm make contact with the phase plug from transient over-excursion. Especially valuable for live sound reinforcement. Aquaplas makes it sound "cleaner" if one knows how to listen.
Every customer that has experienced the Radian diaphragm has noticed details in recorded music they've never heard before. Lower distortion will unmask details everytime.
Edgewound...JBL Pro Authorized...since 1988
Upland Loudspeaker Service, Upland, CA
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