I don’t expect too much from a $100 pair of coaxials. But in this case, the low price of the DXi650 system didn’t keep it from impressing me with it’s performance. The DXi650’s have a very smooth, pleasant sound, and are quite sensitive so they don’t need a big amplifier to play really loud. The bottom end was warm and fat sounding, with a natural and realistic sounding midrange. Male or female vocals had good natural timbre and intelligibility. Difficult to reproduce solo instruments like sax, acoustic guitar and grand piano came through with excellent clarity and resonance. The top end is very polite, with no trace of harshness or sibilance, and maybe in some cases, just a bit too subdued for some tastes. If you prefer your music with a bit more top end detail and presence, you may find yourself bumping up the treble control a click or two with the DXi650’s. And personally, I find that a much better tradeoff than a tweeter that’s overbearing and harsh, that gives you listening fatigue in just a short period. Overall, after several hours of listening to all kinds of music, I found the sonic performance of the DXi650’s to be very good, and a bit surprising when you consider the low cost.
After I’d completed the listening session, I moved the system into my loudspeaker measurement room, and measured the on-axis frequency response. As with other Polk systems I’ve measured previously, the DXi650 system is quite flat, with a small dip around 8500Hz. I then measured the impedance response of the system and got a very typical type of impedance curve for the system with a minimum impedance of around 3 ohms.
If you are considering upgrading your OEM speakers, or maybe you are just looking for a high value, very good sounding system that is built to last, the Polk Audio DXi650’s or any of the other Polk Audio DXi series of speakers should be high on your list of products to audition.
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