|
The plot above is from FaitalPro. Note the y-axis is at 10dB per division. From this plot, there is a dip at 1.5kHz and after that is what appears to be cone breakup.
Fig 1 is my measurement of the 8FE200-4 in a 24 liters ported box. In my plot, the y-axis is at 5dB/division so it’ll be easier to read. The bandwidth looks similar to FaitalPro. The 8FE200-4 extends to 5kHz, making her suitable for guitar cabs. Also, the dip at approximately 1.5kHz is visible.
The Waterfall plot shows the main artifact is at 3.5kHz (Fig 2). What this means is the peak at 3.5kHz seen in the frequency response plot in Fig 1 contains artifacts.
The Toneburst plot (Fig 3) recorded a bunch of light blue slices from 2.5kHz ~ 6kHz. These are the artifacts seen in the waterfall plot but this time, the z-axis is expressed in cycles.
The Spectrogram in Fig 4 is a 2D representation of the artifacts. The y-axis is in milli-seconds (one-thousandth of a second). From 2kHz onwards, all the artifacts are below 2msec, therefore inaudible.
Fig 5 is the Harmonic Distortion of the 8FE200-4. Even though the 3rd harmonic is higher then the 2nd from 2kHz ~6kHz, I’m not too concerned. I plan to cross the woofer at 2kHz so it will be buried in the roll-off.
The Step response of the 8FE200-4 shows a fairly fast attack. The apex is at about 50 micro-sec. Summary I listened to the 8FE200-4 without any crossover to see how the RAW driver sounds like. Of the three, vocal clarity is the best with the FaitalPro 8FE200-4. Second is the Celestion TF0818 and last is the Eminence Beta 8A. The Celestion is quite close to the FaitalPro. The Eminence Beta 8A is a distant third. Unless otherwise stated, all measurements were made in Full Space (4 pi) with the mic at 36 ins, tweeter axis. Impulse Window=5ms. No smoothing applied. |
November 21, 2025PRO DRIVERS
