The Spendor D9 speaker is a four driver, 3 way floor standing speaker with the tweeter positioned, unusually, below the mid-range drive unit, the two bottom drivers deliver the bass.
The Spendor D9 builds on the Spendor D7 with one more drive unit. Both the D7 and the D9 employ a 5G linear flow port at the back and have one set of recessed speaker terminals. The D9 uses size, two bass drive units and the 5G (fifth generation) linear flow port to extend the low frequency response. Spendor quote a frequency response for the D9 of 27 Hz to 25 kHz. Sensitivity is a very reasonable 90 Db for 1 Watt at 1 metre with a nominal impedance of 8 Ohms.
Cabinet uses asymmetric aperture bracing to disperse internal wave
Dynamic damping with small low mass constrained polymer dampers at key energy interface points instantly convert any spurious energy in the cabinet structured into heat
Both asymmetric aperture bracing and dynamic damping result in a silent cabinet and a fast clear sound.
The four feet supporting the cabinet can be levelled and are attached via forged steel inserts for stability of the cabinet.
Power handling is 250 watts unclipped.
The four drive units in the D9 are all built by Spendor and are HF – Spendor 22mm, LPZ polyamide dome, Mid – Spendor 18 cm EP77 polymer cone and Bass – 2 times Spendor 18 cm EP777 polymer cone.