SS Audio Speaker Diaphragm D-420 (2 PACK)

Diaphragm for Foster Fostex Speaker D-420-2 (2 PACK)

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Diaphragm for Foster Fostex Speaker D-420-2 (2 PACK)

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Part Number: D-420-2

Availability: 212 In Stock:

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Foster & Fostex Speaker Diaphragm Part # D-420-2

Voice coil: 1" (25mm)
Diameter: 1.75" (45mm)
Length: 2.875" (72mm)
Impedance: 8 ohm, DCR: 7 ohm
Phenolic dome with copper voice coil on Nomex former.
Fits Foster & Fostex N30, 025H30, H025N30, H025N27, H025N28, FT300H drivers and many others
We also sell the long shaft Cerwin Vega version of this diaphragm. Part # D-420L
See our Cerwin Vega diaphragms page for details.
Our most popular replacement diaphragm!
See the "Fits Models" tab for all applicable cabinet and driver numbers.

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5.0

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Speaker Diaphragm

with only moderate skills I was able to replace the diaphragms following there tutorials online (make sure to clean the magnets well!). The horns are now as good as new thus saving substantially on replacement speakers.

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Reviewed by: Imerkat from MD on 7/9/2014

Active musician

Glad to find these at such a good price for my 1980's Acoustic speaker columns, 2x12+horn. I use with my band regularly and blow the diaphrams from time to time and need affordable replacements.

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Reviewed by: John from Ridgecrest CA on 7/18/2014

studio engineer, Singer, Artist

The Horn parts worked out good. I would recommend this company for speakers and parts for Speaker cabinets also very friendly people.

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Reviewed by: keith rice from lexington,ky on 11/20/2014

Fostex Tweeter replacement

Replaced 2 tweeters in my Traynor k4 stereo keyboard amp with the 2 Fostex units. Real EZ and your shipping and pricing IS AWESOME ! Sounds much better now. Thanks !

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Reviewed by: Mike VanDusen from Petersburg on 6/15/2017

Musician

I am very happy with the Fostex D-420 replacement horn diaphragms. I got two so they would match and it was worth it. Simply Speakers will definitely be my first stop next time I'd need anything in sound.

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Reviewed by: Steve K from Eastern Iowa on 9/23/2017

IMS Coordinator

Worked great.

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Reviewed by: David Steinmetz from El Cajon, CA on 10/13/2017

Engineer

Right product for a decent price. Fit like a glove into an elderly Cerwin Vega floor monitor. Nice to be able to find parts to fix this. Easy install but I have done quite a few. Duration unknown at this time.

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Reviewed by: Darrell Boyle from NH on 6/19/2019

All around fantastic service!

This component did exactly what it was supposed to. The pre-purchase chat confirmed which product to choose, and shipping was sudden!! Great experience.

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Reviewed by: Jim from Lexington on 3/18/2021

Diaphragm for Cerwin Tweeter

Couldn't beat the price I thought I was doomed to find a replacement tweeter till someone in a group on FB I'm in recommended this site I'm overwhelmed I've got my speakers back would recommend to anyone

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Reviewed by: Jerome Schweitzer from Kutztown on 3/28/2024

UPC: 700621987499

Diaphragm for Foster Fostex Speaker D-420-2 (2 PACK)

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Q: Will this fit Fostex 025M01D? If not, do you have diaphragm or driver that will?

Q: does this fit cervin vega D2 tweeter?

Q: I have a Fostex 025M01D compression driver, can you verify if this will fit? Thanks.

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Diaphragm for Foster Fostex Speaker D-420-2 (2 PACK)

Choose Options

Quantity Pricing

Rating Snapshot

Average Customer Ratings

Q: Will this fit Fostex 025M01D? If not, do you have diaphragm or driver that will?

Q: does this fit cervin vega D2 tweeter?

Q: I have a Fostex 025M01D compression driver, can you verify if this will fit? Thanks.

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