Kef HTS3001SE Speaker Test



I recently purchased a set of Kef HTS3001SE speakers with the sole intention of testing the raw drive units only.  You can view the data here.  I had no intentions on testing the speaker because my curiosity ended at the drive unit itself.  However, at the request of quite a few people, I have decided to go further and test the speaker itself, in the ‘Egg’ enclosure.  The Kef speaker comes with the rear port stuffed, and thus, the option to remove the stuffing from the port enabling the listener to use them in a sealed or ported fashion, depending on placement and preference.  The data below is broken up in to two sections to reflect this.


On with the results…


Sealed Option Testing

Impedance and Magnitude

sealed kef impedance

Frequency Response at 0, 30, and 60 Degrees


Kef HTS3001SE Speaker (Sealed) 0 30 60

Harmonic Distortion

Approximately 96dB/1m Equivalent.  Windowed to 200hz as measurement was taken at one-half meter.

kef 3001 sealed HD 96dB Final

Ported Option Testing


kef 3001 ported impedance

Frequency Response at 0, 30, and 60 Degrees

Kef HTS3001SE Speaker (Ported) 0 30 60

Harmonic Distortion

I did not perform HD testing for the ported option.

Frequency Response Comparison of Sealed vs Ported Option

Kef HTS3001SE Speaker Sealed vs Ported Comparison


The average output is approximately 81dB at 2.83v/1m.  Below 400hz, there’s a rise in response to a 3dB peak at 150hz possibly tied to woofer Q+enclosure Q.  The frequency response above 200hz remains fairly neutral.  There is a 2dB bump in response from about 2khz to 4khz and a rise in response above 8khz with a peak of 4dB from nominal at 10khz.  A bit of EQ should be able to tame this easily.  Off-axis response at 30 degrees looks pretty well behaved.  Harmonic Distortion looks quite nice, staying under 1% above 200hz with a small bump at 6khz and a rise above 8khz in 2nd order.  3rd order distortion stays pretty above 1khz, though it rides closely along 2nd order below 1khz.  Overall, pretty nice speakers with an aesthetically pleasing exterior.  Given these are intended as ‘satellite’ home theater speakers, I think they’d make a good option for music and desktop speakers depending on the price you can snag them for and your relative use of the word “value”.

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