FOSTEX FX120 FULL RANGE SPEAKER DRIVER DOWNLOAD

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Through the reciever settings, I have some control in selecting the speaker-subwoofer crossover point which I have set at 80 Hz. In some receivers this can be accomplished by setting the speakers to “small”. Short of ordering a custom build, using a prefabricated speaker enclosures seemed like an excellent idea. The main problem I faced was that I am not skilled with woodworking, but I wanted a pair of attractive speakers. Removing the need for the small Fostex driver to push the bass tones greatly reduces distortion and improves the sonic performance. About 3 to 5 dB of attenuation is a good starting point. 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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Finished photographs of the speaker are shown below. The Fostex FX fullrange driver looked like a very good choice. The response curve seemed good and the drivers generally seem to receive very positive comments from other DIY hobbyists on the forums. Once all that is complete, add binding posts, wire the speakers pseaker screw the baffle on. Last update 3 January Figure 1 shows the calculated frequency response for the Fukl in a 0. The impedance sweep confirms the box tuning of about 63 Hz.

In some receivers this can be accomplished by setting the speakers to “small”. In the photo the FX bookshelf speakers are paired with an 8-inch sealed subwoofer located in the corner on the right.

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Through the reciever settings, I have some control in selecting the speaker-subwoofer crossover point which I have set at 80 Hz. I set out to find a good quality driver with a reasonably flat frequency response. The photograph below shows the front baffle with the driver and port installed. A stapler was used to hold the damping material in place. The prefabricated enclosures are constructed out of MDF and have a volume of 0.

For maximum performance, it is important to have good airflow from the rear of the driver into the enclosure. About 3 to 5 dB of attenuation is a good starting point. The bookshelf speakers sit on VTI stands and are connected to a Denon home theater receiver in a 2.

Fostex FX120 Fullrange Speaker Driver (Transducer)

The amount of attenuation required will be user, room and amplifier dependent. The chamfer was created using a router. Removing the need for the small Fostex driver to push the bass tones greatly reduces distortion and improves the sonic performance.

The -3 dB point is about 58 Hz. Figure 3 below shows a sweep of the frequency response from about Hz and up.

Fostex FX DIY Bass Reflex Bookshelf Speakers

The main problem I faced was that I am not skilled with woodworking, but I wanted a pair of attractive 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. The curved speaker cabinets with a piano gloss finish from parts express seemed like a perfect fit.

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The speaker cabinets are only lightly damped. In small sized rooms and as a monitor, the speaker has a very clear mid-range and an extended response. The frequency response was calculated using WinISD. 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. For additional information about the enclosures, see my previous description of the Parts Express curved speaker cabinets.

Fostex FX120 DIY Bass Reflex Bookshelf Speakers

Recently I have had some very good success with a couple of DIY tower loudspeaker projects that used fullrange speaker drivers. Short of ordering a custom build, using a prefabricated speaker enclosures seemed like an excellent idea.

Glue could also be used. Created 25 February The enclosure was tuned to about 63 Hz by using a 42 mm diameter port with a ramge of 65 mm.

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