From the JA website - Listening window response: within 2dB from 39 Hz to 20 kHz.
Not to be offensive but how can a speaker be considered reference if it cannot get below 30HZ!?
All New Joseph Audio Profile Loudspeakers // The Affordable Reference !
A new Reference speaker at a more affordable price $7K !
Not connected with Joseph Audio in any way
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Not connected with Joseph Audio in any way
https://www.josephaudio.com/profile