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Jordan JX92S Fullrange Speaker Driver

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Jordan JX92S Fullrange Speaker Driver

The Jordan JX92S is a 5" metal cone fullrange driver which is listed by the manufacturer as having an Xmax of 9 mm. The JX92S is constructed on an aluminum die-cast frame. The metallic cone is listed as a 92 mm Controflex metal foil cone and the dust cap is made of the same material. The pole piece is vented and the magnet is shielded. This is a very attractive driver that is bery well built. The Jordan drivers are unique amongst most of the smaller fullrange drivers in that they cover almost nine octaves. Unlike the lower cost Fostex drivers, the JX92S did not come with a gasket or mounting screws.

Jordan JX92S Fullrange Speaker
Jordan JX92S Full Range Driver

T/S Measurements - Jordan JX92S

I have measured the Thiele/Small Parameters of the Jordan JX92S drivers using the Dayton Audio Woofer Tester 3 (WT3). The parameters I measured do not match very closely with those published by the manufacturer. The table below shows a comparison of the measured results. The measurements below are the average of two drivers which were very closely matched.

 Parameter   Manufacturer  WT31  Sound Easy2  WT33 MJK4
Fs 45.0 Hz 51.8 Hz 53.1 Hz 51.1 Hz 49.8 Hz
Vas 15.28 L 11.38 L 11.01 L 11.81 L 15.53 L
Qts 0.40 0.56 0.58 0.58 0.52
Qes 0.58 0.77 0.78 0.80 0.71
Qms 1.35 2.12 2.19 2.11 2.03
Re 6.0 Ohms 5.2 Ohms 5.2 Ohms 5.2 Ohms 5.3 Ohms
Le -- 0.17 mH -- 0.16 mH --
SPL 88 dB 85.2 dB 83.8 dB 84.9 dB 88.2 dB4

T/S Parameters - Jordan JX92S Driver

Notes:
  1 - measurements by diyAudioProjects.com using Dayton Audio Woofer Tester 3 at 22 degrees Celcius
  2 - measurements by Zaph|Audio using SoundEasy
  3 - measurements by Zaph|Audio using Woofer Tester 3
  4 - measurements by Martin J. King. Note that Martin measured efficiency relative to 2.83V. At 1W it would be closer to 85 dB.

The Jordan JX92S will work in a number of enclosures alternatives. A relatively large vented enclosure will be required in order to get bass depth from this driver. At the expense of LF response, the enclosure size can be minimized by using an aperiodic speaker enclosure. A sealed enclosure will also work well with some LF help.

This is a very smooth and accurate driver. While it is realtively expensive, to me it is worth every penny and more.

Datasheet - Jordan JX92S Speaker

Projects Links - Jordan JX92S