Agree it's a little surprising, but remember that the air volume inside the speaker is very small. Heated air expands so that might push the woofers outwards. That's why I asked if the speaker gets very warm (from the heater underneath). @ragwo is the only one here at DC who can answer this question. He has extensive experience rebuilding Phantoms.
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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