1/18/22, 3:57 AM
`
`APG Series Audio Ferrofluid - Ferrofluid
`
`APG Series Audio Ferro uid
`
`Home (https://ferro uid.ferrotec.com/)
`
`
`
` | Products Overview (https://ferro uid.ferrotec.com/products/)
`
`
`
` | APG Series Audio
`Ferro uid
`
`For More E cient Audio Speakers
`As the global leader in ferro uid products, Ferrotec has been supplying ferro uid to audio speaker
`manufacturers since the early 1970s. Ferrotec’s APG Series audio ferro uid enables audio speakers to
`function more e ciently, with improved audio response and better power handling. For audio speaker
`manufacturers, Ferrotec ferro uid also provides signi cantly better speaker manufacturability for
`improved quality and higher manufacturing yields.
`Audio ferro uids are based on two classes of carrier liquid: synthetic hydrocarbons and esters. Both oils
`possess very low volatility and high thermal stability. The choice of uid is dictated by the environmental
`considerations of the application (e.g. humidity, adhesives, contact with water, solvent vapors and reactive
`gases) combined with the best balance of magnetization and viscosity values to optimize the acoustical
`performance.
`Ferrotec’s highly re ned manufacturing process, combined with a long term quality assurance program is
`the key to its repeatable, reproducible product quality. Our ferro uid manufacturing facility in Japan is both
`ISO 9001 and ISO 14001 certi ed.
`
`By varying the quantity of magnetic material in a ferro uid, and by using different carrier liquids, it can be
`tailored to meet a variety of needs. The saturation magnetization (the maximum value of the magnetic
`moment per unit volume when all the domains are aligned) is determined by the nature of the suspended
`magnetic material and by the volumetric loading of the material. The physical and chemical properties
`such as density and viscosity correspond closely to those of the carrier liquid.
`
`https://ferrofluid.ferrotec.com/products/ferrofluid-audio/
`
`1/5
`
`PRODUCTS
`
` (HTTPS://FERROFLUID.FERROTEC.COM/PRODUCTS/)
`
`
`APPLICATIONS
`
` (HTTPS://FERROFLUID.FERROTEC.COM/APPLICATIONS/)
`
`
`TECHNOLOGY
`
` (HTTPS://FERROFLUID.FERROTEC.COM/TECHNOLOGY/)
`
`ABOUT
`
` (HTTPS://FERROFLUID.FERROTEC.COM/ABOUT-US/)
`
`
`
` (HTTPS://FERROFLUID.FERROTEC.COM/CONTACT-SALES/)CONTACT
`
`
`
`IPR2022-00059
`TACTION EX2019 PAGE001
`
`
`
`APG Series Audio Ferrofluid - Ferrofluid
`
`APG Series Audio Ferro uid
`
`Home (https://ferro uid.ferrotec.com/)
`
`
`
` | Products Overview (https://ferro uid.ferrotec.com/products/)
`
`
`
` | APG Series Audio
`Ferro uid
`
`For More E cient Audio Speakers
`As the global leader in ferro uid products, Ferrotec has been supplying ferro uid to audio speaker
`manufacturers since the early 1970s. Ferrotec’s APG Series audio ferro uid enables audio speakers to
`function more e ciently, with improved audio response and better power handling. For audio speaker
`manufacturers, Ferrotec ferro uid also provides signi cantly better speaker manufacturability for
`improved quality and higher manufacturing yields.
`Audio ferro uids are based on two classes of carrier liquid: synthetic hydrocarbons and esters. Both oils
`possess very low volatility and high thermal stability. The choice of uid is dictated by the environmental
`considerations of the application (e.g. humidity, adhesives, contact with water, solvent vapors and reactive
`gases) combined with the best balance of magnetization and viscosity values to optimize the acoustical
`performance.
`Ferrotec’s highly re ned manufacturing process, combined with a long term quality assurance program is
`the key to its repeatable, reproducible product quality. Our ferro uid manufacturing facility in Japan is both
`ISO 9001 and ISO 14001 certi ed.
`
`By varying the quantity of magnetic material in a ferro uid, and by using different carrier liquids, it can be
`tailored to meet a variety of needs. The saturation magnetization (the maximum value of the magnetic
`moment per unit volume when all the domains are aligned) is determined by the nature of the suspended
`magnetic material and by the volumetric loading of the material. The physical and chemical properties
`such as density and viscosity correspond closely to those of the carrier liquid.
`
`https://ferrofluid.ferrotec.com/products/ferrofluid-audio/
`
`1/5
`
`PRODUCTS
`
` (HTTPS://FERROFLUID.FERROTEC.COM/PRODUCTS/)
`
`
`APPLICATIONS
`
` (HTTPS://FERROFLUID.FERROTEC.COM/APPLICATIONS/)
`
`
`TECHNOLOGY
`
` (HTTPS://FERROFLUID.FERROTEC.COM/TECHNOLOGY/)
`
`ABOUT
`
` (HTTPS://FERROFLUID.FERROTEC.COM/ABOUT-US/)
`
`
`
` (HTTPS://FERROFLUID.FERROTEC.COM/CONTACT-SALES/)CONTACT
`
`
`
`IPR2022-00059
`TACTION EX2019 PAGE001
`
`
`
`1/18/22, 3:57 AM
`
`APG Series Audio Ferrofluid - Ferrofluid
`
`Ferro uids by Application
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`Compression
`Drivers
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`Super
`Tweeters
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`Tweeters
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`Mid-
`Ranges
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`Mid-
`Bass Woofers
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`Sub-
`Woofers
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`APG 300 Series
`Audio Ferro uid
`(/products/ferro uid-
`audio/apg-300-
`series/)
`
`APG 800 Series
`Audio Ferro uid
`(/products/ferro uid-
`audio/apg-800-
`series/)
`
`APG 1100 Series
`Audio Ferro uid
`(/products/ferro uid-
`audio/apg-1100-
`series/)
`
`https://ferrofluid.ferrotec.com/products/ferrofluid-audio/
`
`2/5
`
`IPR2022-00059
`TACTION EX2019 PAGE002
`
`
`
`1/18/22, 3:57 AM
`
`APG Series Audio Ferrofluid - Ferrofluid
`
`Compression
`Drivers
`
`Super
`Tweeters
`
`Tweeters
`
`Mid-
`Ranges
`
`Mid-
`Bass Woofers
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`Sub-
`Woofers
`
`Full-
`Rang
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`APG 2100 Series
`Audio Ferro uid
`(/products/ferro uid-
`audio/apg-2100-
`series/)
`
`APG CDF Series
`Audio Ferro uid
`(/products/ferro uid-
`audio/apg-cdf/)
`
`APG E Series Audio
`Ferro uid
`(/products/ferro uid-
`audio/apg-e/)
`
`APG L Series Audio
`Ferro uid
`(/products/ferro uid-
`audio/apg-l/)
`
`APG O Series Audio
`Ferro uid
`(/products/ferro uid-
`audio/apg-o/)
`
`APG S Series Audio
`Ferro uid
`(/products/ferro uid-
`audio/apg-s/)
`
`APG W Series Audio
`Ferro uid
`(/products/ferro uid-
`audio/apg-w/)
`
`Audio Retro t Kits
`Ferrotec also offers Audio Retro t Kits for loudspeaker reconditioning and retro tting. These kits come with pre-
`measured packets of ferro uid which are used to replace the old uid in speaker air gaps when replacing diaphragm
`and coil assemblies. Many speaker manufacturers offer these kits with their diaphragm and coil replacement
`https://ferrofluid.ferrotec.com/products/ferrofluid-audio/
`
`3/5
`
`IPR2022-00059
`TACTION EX2019 PAGE003
`
`
`
`APG Series Audio Ferrofluid - Ferrofluid
`1/18/22, 3:57 AM
`assemblies. To learn more, please contact your Ferrotec ferro uid distributor.
`
` (/audio/retro t-kits/)
`View product
`
`
`Do You Need More Information?
`For questions about speci c ferro uid series, ferro uid applications, or to place an order, contact your Ferrotec
`ferro uid solutions representative or use the Ferro uid Inquiry Form.
`
`Contact Sales (/contact-sales/)
`
`Ferrotec USA
`
`
`
`COMPANY
`
`Overview (https://www.ferrotec.com/about/)
`
`Investor Information (https://www.ferrotec.com/investors/)
`
`Working at Ferrotec Locations (https://www.ferrotec.com/careers/)
`
`Sales O ces (https://www.ferrotec.com/sales-o ces/)
`
`PRODUCTS
`
`Ferro uidic Seal Solutions (https://seals.ferrotec.com/)
`
`Thermal Solutions (https://thermal.ferrotec.com/)
`
`E-Beam Components Solutions (https://e-beam.ferrotec.com/)
`
`Temescal Systems (https://temescal.ferrotec.com/)
`
`Fabricated Quartz (https://quartz.ferrotec.com/)
`
`Advanced Ceramics (https://ceramics.ferrotec.com/)
`
`Machinable Ceramics (https://ceramics.ferrotec.com/)
`
`
`
`CVD-SiC Parts (https://www.ferrotec.com/products/cvd_sic/)
`
`SiFusion Furnaceware (https://sifusion.ferrotec.com/)
`
`Ferro uid (https://ferro uid.ferrotec.com/)
`
`Power Semiconductor Substrate (https://www.ferrotec.com/products/power-semiconductor-substrates/)
`
`Silicon Wafers (https://www.ferrotec.com/products/silicon-wafers/)
`
`Process Tool Parts Cleaning (https://www.ferrotec.com/products/process-tool-parts-cleaning/)
`
`Contract Manufacturing (https://www.ferrotec.com/products/contract-manufacturing/)
`
`MARKETS
`
`Semiconductor Manufacturing (https://www ferrotec com/markets/)
`https://ferrofluid.ferrotec.com/products/ferrofluid-audio/
`
`4/5
`
`IPR2022-00059
`TACTION EX2019 PAGE004
`
`
`
`APG Series Audio Ferrofluid - Ferrofluid
`1/18/22, 3:57 AM
`Semiconductor Manufacturing (https://www.ferrotec.com/markets/)
`
`Electronic Devices (https://www.ferrotec.com/markets/)
`
`Automotive (https://www.ferrotec.com/markets/)
`
`Bio-medical Applications and Industries (https://www.ferrotec.com/markets/)
`
`Opto-electronics, Laser, and Infrared Applications (https://www.ferrotec.com/markets/)
`
`NEWS & EVENTS
`
`Press Releases (https://www.ferrotec.com/company/news)
`All contents © 2001-2022 Copyright Ferrotec (USA) Corporation.
`All rights reserved. Legal Information (https://www.ferrotec.com/legal/)
`
`https://ferrofluid.ferrotec.com/products/ferrofluid-audio/
`
`5/5
`
`IPR2022-00059
`TACTION EX2019 PAGE005
`
`
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