Home
Team
Our Story
Contact Us
My Account
Shipping Updates
FREE SHIPPING!
Edge kits, Diaphragms & Orders over $25.
Menu
To Place Order, Call:
1-800-511-3343
Our Videos
Repair
The FAQs
Testimonials
Our Clients
Contact Us
Search
Contact
Log In
0
Cart
Categories
Speaker Repair Videos
Installation Instructions
Speaker Refoaming
Speaker Repair Videos
Speaker Reconing
Grill Cloth Replacement
Diaphragms & Parts
All Models
SS Audio Diaphragms
Altec Lansing
B & C
Behringer
Bose
Cerwin Vega
Community
EAW - RCF
Electro Voice (EV)
Eminence
ESS Factory Parts
Fane
Foster - Fostex
Gauss
JBL
Jensen
Klipsch
Mackie
Peavey
P.Audio
Radian
RCF - EAW
Roland
Selenium
Sound Tech
SWR
Tannoy
Turbosound
Yamaha
New-Edge-It Repair Kits
Standard Foam Kits
ACDelco Foam Kits
Acoustic Research Foam Kits
ADS Foam Kits
Advent Foam Kits
Allison Foam Kits
Altec Lansing Foam Kits
AVID Foam Kits
B & O Foam Kits
B & W Foam Kits
Bose Foam Kits
Boston Acoustics Kits
BMW Foam Kits
BSR Foam Kits
Cambridge Foam Kits
Cannon Foam Kits
Carver Foam Kits
Cerwin Vega Foam Kits
Chrysler - Dodge - Jeep
Dahlquist Foam Kits
DBX Foam Kits
DCM Foam Kits
Design Acoustics Kits
DynAudio Foam Kits
Energy Foam Kits
EPI Foam Kits
ESS Foam Kits
EV Foam Kits
Fisher Foam Kits
Genesis Foam Kits
Infinity Foam kits
Jamo Foam Kits
JBL & Urei Foam Kits
Jensen Foam Kits
JL Audio Foam Kits
JVC Foam Kits
KEF Foam Kits
Kenwood Foam Kits
KLH Foam Kits
Klipsch Kits
Lexus Kits
M & K Foam Kits
Marantz Foam Kits
Mark Levinson Foam Kits
McIntosh Foam Kits
MCS Foam Kits
Microsoft Foam Kits
Mirage Foam Kits
Mission Foam Kits
NHT Foam Kits
Ohm Foam Kits
Onkyo Foam Kits
Optimus Foam Kits
Paradigm Foam Kits
Passive Radiators
Peavey Foam Kits
Pioneer Foam Kits
Polk Audio Foam Kits
ProAc Foam Kits
Radio Shack Foam Kits
RCA Foam Kits
Rockford Fosgate Foam Kits
Sansui Foam Kits
Scan Speak Foam Kits
Snell Foam Kits
Sony Foam Kits
Sound Dynamics Foam Kits
Tannoy Foam Kits
Technics Foam Kits
Toyota JBL Kits
Velodyne Foam Kits
Yamaha Foam Kits
Rubber Edge Kits
Cloth Edge Kits
Cloth Edge Kits
Rubber Edge Kits
Ferro Fluid Kits
Speaker Repair Parts
Speaker Edge Repair Kits
Speaker Diaphragms
Recone Kits
Replacement Speakers
Spiders
Terminals-Leadwire
Speaker Gaskets
Repair Adhesives
Speaker Dust Caps
Foam Speaker Surrounds
Rubber Speaker Surrounds
Cloth Speaker Surrounds
Passive Radiators
Speaker Cones
Replacement Speakers
Tweeters
Midranges
Woofers
Full Range
Pro Speakers & Horns
Advent - AR - NHT Speakers
Genuine Eminence Parts
JBL Factory Parts
ESS Factory Parts
EV Factory Parts
Peavey Factory Parts
Speaker Grill Cloth
Speaker Grills
Speaker Grill Cloth
Mesh Speaker Grills
Speaker Grill Pegs
Waffle Grills
SS Audio Recone Kits
Acoustic Research
Advent
Altec Lansing
Bose
Cerwin Vega
Electro Voice
Eminence
JBL
Klipsch
Fane
McIntosh
RCF
Yamaha
Speaker Adhesives
Speaker Dust Caps
Foam Speaker Surrounds
Rubber Speaker Surrounds
Cloth Speaker Surrounds
Speaker Gaskets
Speaker Accessories
Cabinet Handles
Cabinet Corners
Terminals
Port Tubes
Speaker Horns
Leadwire Kits
Speaker Grills
Crossovers
Crossovers
2 Way Crossovers
3 Way Crossovers
L-Pads
Protection Bulbs
JBL Style Foil Speaker Badges
Customer Photos & Videos*
Speaker Repair Photos
SS Apparel
Specials
Scratch and Dent - Open Box
Brands
AC Delco
Acoustic Research
ADS - Braun
Advent
Allison
Altec Lansing
AVID
B&C Speakers
Bang & Olufsen
Behringer
BMW
Bose
Boston Acoustics
Bowers & Wilkins
BSR
Cambridge Soundworks
Cannon
Carver
Celestion
Cerwin Vega
Chrysler - Dodge - Jeep
Community
Dahlquist
DBX
DCM
Design Acoustics
Dynaudio
EAW - RCF
Electro Voice
Eminence
Energy
EPI
ESS
Fane
Ferrotec
Fisher
Ford - Lincoln
Foster - Fostex
Gauss
Genesis
Infinity
Jamo
JBL
Jensen
JL Audio
JVC
KEF
Kenwood
KLH
Klipsch
Mackie
Marantz
McIntosh
MCS
Microsoft
Miller & Kreisel
Mirage
Mission
NHT
Ohm
Onkyo
P Audio
Paradigm
Peavey
Pioneer
Polk Audio
ProAc
QSC
Radian
RCA
Realistic - Optimus
Renkus Heinz
Rockford Fosgate
Roland
Sansui
Scan Speak
Selenium
Snell
Sony
Sound Dynamics
Sound Tech
SS Audio - Simply Speakers
SWR
Tannoy
Technics
Toyota - Lexus
Turbosound
Velodyne
Yamaha
Popular
Speaker
Diaphragms
Replacement
Speakers
Speaker
Parts
New-Edge-Kit
Foam Repair Kits
Online
Instructions
Recone
Kits
Speaker
Grills
Accessories
Crossovers
Genuine
JBL Parts
Woofers
Tweeters
Specials
Home
Ferro Fluid Kits
Ferrofluid 100uL General Purpose for 1" Diameter Coil
Ferrofluid Repair Kit
Add to Wish List
Ferrofluid 100uL General Purpose for 1" Diameter Coil
12
Review(s)
5
0
5
Write a Review
Your Price:
$11.95
Questions about this item? Ask here.
Chat With Us
Part Number:
MI-FF100
Availability:
25 In Stock:
Put me on the Waiting List
Add Qty:
+
-
Add to Cart
Details
Customer Reviews
Q & A
Ferrofluid Repair Kit, 100uL for 1" Diameter Voice Coil Part # MI-FF100
Ferrofluid Repair Kit
100uL for 1" voice coil
Reduces distortion
Increases power handling
Comes complete with cleaning strips and instructions
For most compression drivers, repairs, and diaphragm assemblies
SDS
Our ferrofluid kits come with pre-measured packets of ferrofluid which are used to replace the old fluid in speaker air gaps when replacing diaphragm and coil assemblies.
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.
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.
Specifications and Physical Properties
Appearance
black-brown or red-brown viscous fluid
Carrier Liquid
synthetic ester oil
CGS Units
SI Units
Saturation Magnetization (Ms)
220 Gauss
22 mT
Viscosity @27°C
200 cP
200 mPa·s
Density @25°C
1.16 g/cc
1.16 10
3
kg/m
3
Pour Point
-35 °C
-35 °C
Flash Point
>200 °C
>200 °C
Thermal Conductivity @38°C
150 mW/(m·K)
150 mW/(m·K)
Surface Tension @25°C
32 dynes/cm
32 mN/m
Coefficient of Thermal Expansion
7.5 x 10
-4
ml/ml°C
7.5 x 10
-4
/K
Rating Snapshot
Select a row below to filter reviews.
5 Stars
11
4 Stars
1
3 Stars
0
2 Stars
0
1 Stars
0
4 Stars
Clear Filter
×
Average Customer Ratings
4.9
View All Reviews
Reviews Sorting
most helpful to least helpful
high to low rating
low to high rating
newest to oldest
oldest to newest
Tech
I had a speaker with low output from the tweeter and replacing the ferrofluid fixed the problem!
Did you find this helpful?
2 of 2
Found Helpful
Reviewed by:
Rick Denny
from Amarillo, Tx on 1/21/2016
5
mr.
In my JBL 4408A speakers, the tweeters were starting to sound bad --really bad! I pulled them apart and cleaned the gap in the magnets then added new ferrofluid from "Simply Speakers". The result was unbelievable. My tweeters have never sounded this good. I am normally too busy to leave reviews but I am so pleased that I took the time to do so.
Did you find this helpful?
Reviewed by:
Gary Moore
from Tempe, Az on 11/4/2017
5
Mr
Quick service and great product
Did you find this helpful?
Reviewed by:
(Verified Buyer)
Eric Takushi
from Orange, Ca on 12/8/2017
5
Mr
I’m so glad I tried this on my 23 year old B&W P4 tweeters. I was ready to let them go since it would be too expensive to replace the tweeters. After installing new ferrofluid they are like new again. My advice is to definitely try this, but make sure you clean the old fluid out first. Mine was sticky like tar and took about 45 minutes per tweeter to clean, but well worth it.
Did you find this helpful?
Reviewed by:
Rob
from Leesburg on 12/17/2017
5
Mr
This was a premeasured amount and has worked perfect since installing
Did you find this helpful?
Reviewed by:
Christopher Fugitt
from Hope AR on 1/11/2018
5
Thanks!
I would like to thank Simply Speakers for offering this product. I acquired a pair of KEF C40 speakers. At this age (30+) the tweeters sounded lower in output and KEF no longer supports these drivers. I restored these speakers to their magnificent splendor with the use of this kit to remove and replace the Ferrofluid that had turned to sludge in the voice coil gap and stuck to the voice coil (used foam swabs to clean the voice coil), and re-coating the dome with Mod Podge waterbase fabric sealer. The speakers sound amazing thanks to this kit! A HUGE improvement and very inexpensive. Dull treble may not be your crossover capacitors if your tweeters employ Ferrofluid! This substance gets more viscus over time strangling your tweeters!
Did you find this helpful?
Reviewed by:
Jim
from Schenectady NY on 3/2/2018
5
Director of engineering
The fluid works great. there should be more fluid for a 1" voice coil
Did you find this helpful?
Reviewed by:
Stephen
from Trinidad on 1/2/2019
4
A+!!!
I have a vintage pair of BA A100's.... all original. I was skeptical about doing the fluid change, but followed the instructions, the old fluid absorbed right up, nothing gummed up in my case. Applied new fluid re-assembled and was amazed at the difference in clarity!! Glad I took the time to do it. First for me. Thanks Simply Speakers!!
Did you find this helpful?
Reviewed by:
Greg D
from Ontario, Canada on 7/1/2019
5
Boston A400 Tweeters
While doing the new foam surrounds on my Boston Acoustics A400's I decided to replace the ferrofluid in the tweeters as well. Process was straightforward. Results were spectacular. I had forgotten how great the A400's coupled to my 80's Yamaha M65 amp and AVX preamp sounded. Very pleased with the results and my thanks to Simply Speakers for making these parts and the instruction on repair available to us old audiophiles with vintage stuff.
Did you find this helpful?
Reviewed by:
Rob
from Missouri on 4/15/2020
5
Perfect For Tweeter Refresh
I purchased two of these ferrofluid refresh kits to restore the SEAS H211 tweeters in my PSB Project B2 speakers. The kit was easy to use, instructions were clear and easy to follow, and I'm very happy with the results.
Did you find this helpful?
Reviewed by:
Richard
from Kitchener on 4/24/2020
5
Load More
Q:
how do i apply the ferrofluid and where?
Asked by:
kevin
- 5/22/2015
A:
The fluid comes with full instructions for the correct installation. Thanks!
Was this answer helpful?
0 of 0
Customer(s) found this Answer helpful.
Answer provided by:
Simply Speakers (5/26/2015)
Q:
Does this kit supply enough fluid for a single or a pair of tweeters?
Asked by:
Matt
- 12/26/2016
A:
This depends on the diameter of the tweeter voice coil. This kit is for a 1" coil diameter. Double check the diameter of yours prior to placing an order to be sure you have enough fluid.
Was this answer helpful?
0 of 1
Customer(s) found this Answer helpful.
Answer provided by:
Simply Speakers (12/27/2016)
Questions about this item? Ask here.
UPC:
700621989141
Frequently Bought Together
Add to Cart
SS Audio Diaphragm for JBL 2412H, 2412H-1, 2413, JRX, TR Series, MPro, Sound Factor, D-2412
(28)
In Stock:
$17.75
Add to Cart
Klipsch Style Speaker Repair Diaphragm K-72, K-73, K-74, K-75, K-79, K-80, K-85, K-97, Many More
(55)
In Stock:
$17.95
Add to Cart
Diaphragm for Foster Fostex Speaker D-420
(33)
In Stock:
$16.95
Add to Cart
SS Audio Diaphragm for EV, Eliminator, DH3, DH2010, 8 Ohm, D-DH3
(9)
In Stock:
$35.95
Recently Viewed
Turn History Off
×
Get Newsletter Deals!
Newsletter
Subscribe
Unsubscribe
Ooop!
The email you entered isn't valid.
WooHoo!
You subscribed successfully.
Ok!
You're unsubscribed.
Follow us
TOP
×
Store Search
×
Store Login
Email
Password
Log in to my account
Create Account
Reset my password