FOSTEX FX120 PDF

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 curved speaker cabinets with a piano gloss finish from parts express seemed like a perfect fit. A stapler was used fosteex hold the damping material in place. No crossover or notch filter is being used. Removing the need for the small Fostex driver to push the bass tones greatly reduces distortion and improves the sonic performance.

The impedance sweep confirms the box tuning of about tostex Hz. Once all that is complete, add binding posts, wire the speakers and screw the baffle on. There is a bit of damping material in the upper, smaller chamber only. Recently I have had some very good success with a couple of DIY tower loudspeaker projects that used fullrange speaker drivers.

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Fostex FX Fullrange Speaker Driver (Transducer)

In small sized rooms and as a monitor, the speaker has a very clear mid-range and an extended response. Fill in your details below or click an icon to log in: You can use the component values shown in Figure 2 and tune foztex BSC to suit your room and amplifier. I have recently built these double bass reflex box speakers.

The Fostex FX fullrange driver looked like a very good choice. In some receivers this can be accomplished by setting the speakers to “small”.

Fostex FX120 Fullrange Speaker Driver (Transducer)

For maximum performance, it is important to have good airflow from the rear of the driver into the enclosure. View all posts by zimmer The sound they produce is incredible. Figure 1 shows the calculated frequency response for the FX in a 0. I guess this is do to the clarity and coherence of the sound. Email required Address never made public. Learn how your comment data is processed. Glue could also be used.

Post was not sent – check your email addresses! I set out to find a good quality driver with a reasonably flat frequency response. Very dynamic, detailed and live like. The photograph below shows the front baffle with the driver and port installed. Figure 3 below ofstex a sweep of the frequency response from about Hz and up. Finished photographs of the speaker are shown below. In the photo cx120 FX bookshelf speakers are paired with an 8-inch sealed subwoofer located in the corner on the right.

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I have invested about EUR for the two Fostex drivers, the plywood, glue and binding posts.

This site uses Akismet to reduce spam. For additional information about the enclosures, see my previous description of the Parts Express curved speaker cabinets. The owner was very helpfull and responsive and can be recommended.

The prefabricated enclosures are constructed out of MDF and have fosetx volume of 0. The speaker cabinets are only lightly damped.

The -3 dB point is about 58 Hz. I have partnered them with my first LM based chipamp in a test setup on a fosrex of MDFwhich you can also see on the picture below. The enclosure was tuned to about 63 Hz by using a 42 mm diameter port with a length of 65 mm. About 3 to 5 dB of attenuation is a good starting point.