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Home > Diaphragms & Parts > All Models
Foster Fostex Speaker Diaphragm D-420
Speaker Diaphragm D-420
Foster Fostex Speaker Diaphragm D-420
Item Id: D-420
List Price: $24.95
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Description
Foster & Fostex Speaker Diaphragm Part # D-420
Foster Fostex N30 Diaphragm
  • Foster & Fostex Speaker Diaphragm Part # D-420
  • Voice coil: 1" (25mm)
  • Diameter: 1-3/4" (45mm)
  • Length: 2-7/8" (72mm)
  • Impedance: 8 ohm, DCR: 7 ohm
  • Phenolic dome with copper voice coil on Nomex former.
  • Our most popular replacement diaphragm!
  • Fits Foster & Fostex N30, 025H30, H025N30, H025N27, H025N28, FT300H drivers and many others including:

    Foster: N-30, N30, N 30, 025H30, H025N30, H025N27, 025N27, H025N28, FT-300H, FT 300H, FT-500H, FT 500H, FT500H, HT 404, HT 411, HT 413, Fostex: FT300H, HT404, HT-404, HT411, HT-411, HT413, HT-413, Ampeg, Crate, Carvin, Community, Cerwin Vega: C-8G, C8G, C 8G, X-Tealth, SHS, Sunn, SWR, SWR Goliath, SWR Redhead, SWR Megoliath, Sound Tech, Yorkville, P-Audio: HT-406, HT406, Yamaha, and many more!

    Please check your model and style before ordering to be sure you are getting the correct speaker diaphragm.
 
Foster Fostex Diaphragm
  • We sell the long shaft Cerwin Vega version of this diaphragm. See our Cerwin Vega diaphragms page for details.
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Customer Reviews Average Rating review
Andy
Perfect item. nice sound. Fast delivery
Reviewed by: Andy from Spain. on 5/3/2012
Like to play guitar
Was looking for a diaphragm for a 2 Soundtech horn drivers. Didn't know if these would fit. Got them in the mail. (Delivery was excellent.)And they fit like a glove and work well also. Actually had looked everywhere else on the internet a had trouble finding a diaphragm that fit. My horn drivers are vintage. The cabinets they go in a made of wood not the new plastic. Price was cheap enough too. .
Reviewed by: Barrie from Indiana. on 4/6/2012
Foster & Fostex Speaker Diaphragm Part # D-420
I bought one of these a few years back from a different website to fix the horn on my Bassman 200 (took the darn thing to a football field and cranked it back in my teens and blew it out, then again at a gig a few years later) and it works great. Hopefully I'll be mindful of the horn and attenuate it next time I blast it on full.
Reviewed by: Eric from Colorado. on 4/30/2011
Great parts
I bought two of these to repair my SWR Silverrado Special cabs. I had blown both high drivers playing some music through them for practice one night. I pulled the horns and replaced the drivers with these which are a perfect fit and I have back my total sound from my cabs.
Reviewed by: Jimmy Traylor from Atlanta GA. on 12/14/2010
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