Free support for loudspeaker projects, sourcing OEM speaker building supplies, and passive crossover design. We sell raw speaker drivers (tweeters, woofers. Fostex FEE. new old stock, sealed. condition new. sold as Fostex FEE is a mm (“) full-range driver. The driver is well built and like. Shown is an example of a. FEE double bass reflex type enclosure. • Multiple bass reflex ports repro- duce lower frequency. • The first port is tuned ‘Fb’ to.

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Inspired by a deep regard for the look of Tony Gee’s Solothe miniOnken for the FRs literally came in a flash one might consider the Solo as the fonken for the FE Note – this driver has been discontinued and is no longer foostex produced. It turned out really well Since we are also playing with small tube amplifiers W we wondered whether the much more efficient Fostex FEe would fit in a miniOnken-like enclosure.

This may be useful to easier mate with a woofer — or in the case of the miniOnken lean out the bass in a room where it is otherwise fe127ee. The increased room reflections provide a good response off axis and a better sound stage i.

Finished versions fe12e the miniOnken with planethifi modified drivers also available separately can be special ordered and flat-paks are under development.

Another positive characteristic of a bipole system is that the rear driver compensates for the baffle diffraction stepand thus no electronic correction circuit is required. This speaker system is suited for fe127d to medium sized room with low to medium powered amplification.

Pushing these tiny X max drivers to produce bass tends to cause some loss of cone fe127f, even at low SPL. I had a lot of success with this driver in a Sealed Bipole Speaker Enclosure.

As a result, loudspeaker placement is generally not critical, but you do want to keep them off of a wall. Unfortunately, with all the reflecting going on, many of the timing and phase cues are lost and thus imaging is not as good as a monopole design.


Many designers like to use the Golden Ratio 0. Created 12 November The driver is well built fw127e like most Fostex units, it sounds excellent. This is accomplished by the use fotex small panels no box wall has a greater unbraced panel span than 5″ mmthe use of relatively thin, light, and stiff baltic birch plywood, and the driver braced against a large portion of the mass of the box panel to spread that energy as thin as possible.

The Fostex FEE driver is cm 4.

Fostex FEE Fullrange Loudspeaker Driver

A diyAudio thread on a Fonken build. The frame is stamped steel so it should benefit from some damping with ductseal. Despite the reduced efficiency, sealed designs are quite popular as they promote a smooth frequency response and excellent cone control which translates into accurate sound reproduction.

While these ratios may not result in aesthetically pleasing dimensions, it is best to keep the internal dimensions from being multiples of any another internal dimension. This way I have the option of using the BSC or by-passing it. Used in rostex right location, wall loaded and in a smaller room, this speaker has very special sonics which can bring out spectacular mids.

Because of its very flat frequency fostxe it makes a good small control monitor for music or video editing.

With wall loading within 25 mm2 dB was found to be adequate, dB was required in free space, but this speaker really needs wall loading. For two FEE drivers, the optimum volume is about 12L.

Another ratio sometimes used is 0.

Fostex FE127E Specifications

They can be made fully aperiodic with the addition of foam plugs in the ports. It also sounds really good. As a result, sealed box systems are typically the least efficient enclosures since half of the radiation from the driver i. Last update 12 July This in turn results in unpleasant distortions which are present throughout the mid-range.

The near-aperiodic nature is seen in the Fonken impedance curves below — it is indicated by the small peak on the lower side of the resoance saddle. The table below shows a comparison of the measured results. BiFonken Mk ii beta. Even more far-out versions have been proposed 1. Last update 12 July The frame of the driver is stamped steel, so it will benefit from some damping. Turns out that except for some changes in the size of the port spacers it works really well.


Baffle Step Compensation Circuit.

EOS Electronics | Proffesional Audio | Fullrange | Fostex FE Fullrange Loudspeaker

These serve different sets of fosttex needs. One of the major assets of an onken enclosure is fosetx way the vents acted as a an incredibly well braced, almost constrained layer, cabinet wall — this was the 1st thing i realized on seeing my 1st onken in an Audax project pamplet in the late 70s the design actually goes back to the Jensen UltraFlex. See appropriate Box Plan pages.

Figure 01 shows the calculated frequency response. Here the Fostex FEE fullrange driver is used in a small vented bass reflex box.

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These speakers do really well with any sort of vocals, jazz, and simpler classical music. The cone is made of banana plant’s fiber and this it is very light and the driver is fast.

The enclosure design has taken the golden ratio into consideration which helps with the final sonics. The long ports with a very high aspect ratio naturally provide a port with high resistance. In addition to the cabinet bracing, small blocks of various sizes and shapes were glued to the inside panels in random and non symmetrical locations to further alter resonances and helped to use up the 1.

However, I chose to go with 23L for aesthetic reasons and to allow for an easy conversion to a T-Line had I been disappointed with the sealed results. Created 19 June