I have not heard the D9 but have heard the PSB T3 and just recently purchased the Spendor D7.
The PSB is a very nice speaker with a smooth presentation but the bass response can be overdone and peaky / one note hard sounding.
The design if the Spendor tower's slotted port / semi transmission line lets them produce a very high quality bass that is unique and set apart from the competition. Give them enough power and they will easily play full-range with authority with clean, well defined notes.
In fact the bass response during my D7 demo is what sold me on them. I played a jazz piece with a well recorder upright bass and could not believe the sound, powerful physical impact yet well defined and no peaks whatsoever. I was sold instantly and am extremely happy with the purchase.
The PSB is a very nice speaker with a smooth presentation but the bass response can be overdone and peaky / one note hard sounding.
The design if the Spendor tower's slotted port / semi transmission line lets them produce a very high quality bass that is unique and set apart from the competition. Give them enough power and they will easily play full-range with authority with clean, well defined notes.
In fact the bass response during my D7 demo is what sold me on them. I played a jazz piece with a well recorder upright bass and could not believe the sound, powerful physical impact yet well defined and no peaks whatsoever. I was sold instantly and am extremely happy with the purchase.