WOOFER: Fostex FW405N

COMPRESSION DRIVER: Fostex D1400

HORN: Fostex H400

Super-TWEETER: Fostex T925A


...this project has been upgraded to "The Beryllium project":
http://www.homebuilthifi.com/project/18865

Comments

• hbi
• 13 April 2014 at 12:33AM
• Nice project, but who is the builder horns?

• marco_gea
• 13 April 2014 at 04:17AM
• The mid-range horns are Fostex units: http://www.fostexinternational.com/docs/speaker_components/WoodRadialHorn.shtml

• OldSwede
• 15 December 2014 at 10:01PM
• Probably I'm a fool for not being able to read the diagrams, but what would you rate the average efficiency at?

• marco_gea
• 9 January 2015 at 04:41PM
• The overall efficiency is dictated by that of the Woofer, which is about 93 dB/W(m).

• marco_gea
• 19 August 2015 at 11:40AM
• [project updated with full description in August 2015]

• marco_gea
• 2 November 2015 at 09:34AM
• [Individual driver transfer frequency responses and target functions added - November 2015]

• marco_gea
• 2 November 2015 at 09:57AM
• [Woofer distortion measurements added - November 2015]

• marco_gea
• 12 February 2016 at 07:00AM
• [project updated in February 2016]

• marco_gea
• 3 May 2016 at 06:22AM
• [project updated in May 2016]

• Dansantoso
• 8 July 2017 at 11:00AM
• Halo,
  
  i will build my first DIY speakers soon and my friend recommend to use Fostex 1400 and H400. Woofers will be Scanspeak illuminator 7". There will be no crossover, XTA sound management module will be used as digital crossover.
  
  How good it the fostex? Is it better than TAD 2001? I am looking for very low frequency response horn driver.
  
  Thanks

• marco_gea
• 31 October 2017 at 08:51AM
• Hi Dansantoso,
  
  the Fostex D1400 is a very good driver indeed, but I think the TAD TD-2001 is probably even better.
  
  Having said this, I'm sorry to say that the weak link in your proposed system is going to be the Scanspeak Illuminator. There is NO way a 7" mid-woofer is going to match the dynamics and realism of a good horn-loaded compression driver.