Hello
I would like to know the advance of ferrofluid in hifi use for JBL 2" drivers. Have you heard a difference ? I've got a pair of 2450.
Thanx
Hello
I would like to know the advance of ferrofluid in hifi use for JBL 2" drivers. Have you heard a difference ? I've got a pair of 2450.
Thanx
I think that Meyer Sound did use ferrofluid in their version of the 2450:
http://www.audioheritage.org/vbullet...d-ms-2001-a%29
Have you managed to clean your 2450's? I'd give them a check to see if they are still up to spec before doing any mods.
Hi andychris,
I have no experience with JBL Be Diaphragm ( used in 476 driver), neither Mg,
unfortunately, only with JBL-AL, JBL-Ti, JBL-Ti/ribbed, JBL-Ti-SL, Radian-AL and Truexten-Be.
Any of the mentioned are quite OK up to 10kHz, but over 10kHz their behavior become "unstable"
I would not expect that ferrous-fluid would reduce the diaphragm"unstable" oscillations over 10kHz.
JBL SL (coated) Ti or Be diaphragms have shown less resonance tendency then "clean" Ti.
My experience with JBL-AL diaphragm is that it can "go" till to 20kHz with "acceptable" FR deviations if You do not plan to use UHF driver.
I believe that JBL-Be (SL) diaphragm ( used in 476 driver) would behave very good too.
Applicable horn would make an influence too.
Either of the mentioned including Radian and Truextent can be used up to (say) 8~10kHz, so UHF driver has to be applied.
Regards
Ivica
Isn't ferrofluid's only purpose for cooling? I don't know if it has any sound enhancing capabilities.
It is also known to thicken and harden over time. And it's a bad thing. ;-)
Probably not what you are after but best I can do, in room response at about 2m , mic pointing upwards but on axis with horn(very very loud!)Mini dsp umic/REW.
I saw measurements and reports about how ferrofluid was able to tame the heavy breakups of the ribbed Ti Dome (the two peaks around 12k and 17k).
I don't exactly understand how this is possible, as the VC should not be sufficiently affected by those breakups modes, but it seems to be the case anyway
I should point out that curve I posted is an in room response(look at the bass!)post dsp, the falling response is deliberate and eq'd to roll off at about 14.5khz.
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