Fostex has always been highly regarded in the “Full /Wide range” product category. There are always a few that stand out above the others, and the FX is. It looks like there are not so many people that ended up buying the Fostex FX , despite there seems to be a widespread good opinion about. Information about the Fostex FX fullrange speaker driver (transducer) including datasheet and speaker box (enclosure) plans.

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The impedance sweep confirms the box tuning of about 63 Hz. Sorry, your blog ffostex share posts by email. Learn how your comment data is processed.

Short of ordering a custom build, using a prefabricated speaker enclosures seemed like an excellent idea. Cymbals are crisp and there is reasonable low end response given the small size of the driver. About 3 to 5 dB of attenuation is a good starting point. You are commenting using your Facebook account. The enclosure design is from Fostex as well. I have partnered them with my first LM based chipamp in a test setup on a piece of MDFwhich you can also see on the picture below.

Fostex FX120 DIY Bass Reflex Bookshelf Speakers

The frequency response was calculated using WinISD. Recently I have had some very good success with a couple of DIY tower loudspeaker projects that used fullrange speaker drivers. The photograph below shows the front baffle with the driver and port installed. I guess this is do to the clarity and coherence of the sound. Notify me of new posts via email. Very dynamic, detailed and live like. The speaker cabinets are only lightly damped. Leave a Reply Cancel reply Enter your comment here The enclosure was tuned to about 63 Hz by using a 42 mm diameter port with a length fx1120 65 mm.


The -3 dB point is about 58 Hz. The chamfer was created using a router. Fill in your details below or click an icon to log in: The bookshelf speakers sit on VTI stands and are connected to a Denon home theater receiver in a 2.

The fullrange driver used is a Fostex FX I have invested about EUR for the two Fostex drivers, the plywood, glue and binding posts. There is a bit of damping vostex in the upper, smaller chamber only. Once all that is complete, add binding posts, wire the speakers and screw the baffle on.

Figure 1 shows the calculated frequency response for the FX in a 0.

The main problem I faced was that I am not skilled with woodworking, but I wanted a pair of attractive speakers. The plan and the drivers have been purchased at Art of Sound.

Fostex FX – Double Bass Reflex Loudspeaker – Michael’s Project Page

No crossover or notch filter is being used. In the photo the FX bookshelf speakers are paired with an 8-inch sealed subwoofer located in the corner on the right. Figure 3 below shows a sweep of the frequency response from about Hz and up. View all posts by zimmer You are commenting using your WordPress. This site uses Akismet to reduce spam. The bass performance of fosrex is also astonishing when they are placed fairly close against the wall. A stapler was used to hold the damping rx120 in place.


Notify me of new comments via email. The Fostex FX fullrange driver looked like a very good choice.

Fostex FX DIY Bass Reflex Bookshelf Speakers

The MDF speaker baffle is one inch 25 mm thick so it is necessary to create a chamfer behind the driver to improve airflow. You are commenting using your Twitter account. In some receivers this can be accomplished by setting the speakers to “small”.

Finding myself with the need for a small pair of speakers studio monitor or bookshelf speaker I decided to once again use a fullrange driver. I set out to find a good quality driver with a reasonably flat frequency response.