FERROFLUID LIQUID FOR REPAIR SPEAKERS 2ml

Description

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Ferrofluid AudioMag 200-400 for woofer/driver repair
Highlights
Great for retrofit/replacement or new applications
Damps impedance at resonance
Reduces distortion
Conducts heat away from voice coil
Increases power handling capacity
Comes complete with cleaning strips and instructions
Sized to fit approximate voice coil diameters
Often 100uL General Purpose for 1" Diameter V.C.
300uL General purpose for 1.5" Diameter V.C.
650uL General Purpose for 2" Diameter V.C.
900uL General Purpose for 4" Diameter V.C.
Ferrofluid improves the performance of high frequency and midrange drivers. It works by damping the impedance at resonance to effectively lower distortion, smooth frequency response, and increase thermal power handling. It should be used to replenish drivers treated previously with ferrofluid. With care, it can also upgrade most drivers that have never contained ferrofluid.
The kits listed are approximate fill quantities relative to approximate voice coil diameters. In general, the air gap should be 75% filled prior to inserting a voice coil diaphragm assembly. The kit contains synthetic ester-based ferrofluids and in most cases should not pose any adhesive incompatibility. It is recommended that this is confirmed by contacting the driver manufacturer prior to usage. Adding ferrofluid to a driver not intended for it will, in most cases, void the original manufacturer's warranty.
Included in kit: A ferrofluid packet, absorbent paper strips for removing old ferrofluid, detailed instructions, and material safety data sheet.
Fluid type: Loudspeaker
Fluid No: AMG 200-400
________________________________________________________________________
Saturation Magnetisation.......................................................………..200 Gauss (+/-5%)
Magnetic Field Required to Achieve 90% of Saturation Magnetisation……………………………………….………..5.75 kOe
Initial Magnetic Permeability (~30 Oe)………………………………….1.68
Magnetic Permeability at 8000 Oe………………………………………1.02
Viscosity @ 27ºC.....................................................................……… 400 cP (+/- 10%)
Pour Point………………………………………………………………… -22ºC
Density @ 25ºC........................................................................………1. 11 g/ml
Thermal Conductivity……………………………………………………..~ 0.15 W m
-1
ºK
Evaporation Rate at 175ºC……………………………………………… ~ 8.0x10
-8
g cm
-2
s
-1
Surface Tension at 17ºC………………………………………………… ~ 35 dynes cm
-1
Electrical Resistivity at 25ºC……………………………………………. >10
9
ohm-cm