As your B&W707 has a SAM profile I think you should use that, not the bass control, and keep the reflex port open. The Martin Logan used in the article has a bigger bass driver and much higher sensitivity. I would assume it is better suited for the sealed box experiment.
I have no explanation for the tweeter distortion you describe. It should not be like that.
I have no explanation for the tweeter distortion you describe. It should not be like that.
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Devialetless!
Roon, ROCK/Audiolense XO/Music on NAS/EtherRegen/RoPieee/USPCB/ISORegen/USPCB/Sound Devices USBPre2/Tannoy GOLD 8
250 Pro CI, MicroRendu(1.4), Mutec MC-3+USB
Devialetless!
Roon, ROCK/Audiolense XO/Music on NAS/EtherRegen/RoPieee/USPCB/ISORegen/USPCB/Sound Devices USBPre2/Tannoy GOLD 8
250 Pro CI, MicroRendu(1.4), Mutec MC-3+USB