I'm wondering if the problem may be caused by ultrasonic frequencies the Avior is able to reproduce but the other speakers were not able to reproduce. The Avior's frequency response is spec'd at 25 Hz to 30 kHz (-3 db), and Stereophile measured the similarly spec'd Avior 2 as actually having a small peak at 30 kHz, that being the highest frequency for which they measured frequency response.
What electronics are you using? Perhaps the amp is not happy with the low impedance of the speaker at ultrasonic frequencies. For the Avior 2 Stereophile measured an impedance of about 3 ohms between 20 kHz and 30 kHz, and about 3.5 ohms at 50 kHz, although impedance phase angles were benign in those regions.
Regards,
-- Al
What electronics are you using? Perhaps the amp is not happy with the low impedance of the speaker at ultrasonic frequencies. For the Avior 2 Stereophile measured an impedance of about 3 ohms between 20 kHz and 30 kHz, and about 3.5 ohms at 50 kHz, although impedance phase angles were benign in those regions.
Regards,
-- Al