ScanSpeak 23W/4557T-02 Revelator, 9" Aluminum Cone Subwoofer, Black Cone
Same model as 23W/4557T, except with a black cone.
The Scan-speak 23W/4557T is a very high end subwoofer, designed to be used with a passive radiator in a small enclosure. This sub has a very rigid aluminum cone, low loss rubber surround and cast frame. The passive radiator is similar, but with a weight attached to the bass of the cone. The 23W/4557T is using the SD-1 motor system. There are gold plated binding posts and the woofer is covered by a decorative rubber cap.Frequency response with the passive is down to 25Hz. One cubic foot sealed has an F3 of 33Hz.TECHNICAL DATA:Sensitivity 2.83V/1M 82 dB Free air resonance Fs 20.5 HzDC resistance 3.45 ohmV.C. inductance 0.45 mHPower 225 WEffective cone area 232 cm2V.C. diameter 50 mmVC height -Air gap -Lin. & max. excursion ±13 / ±20 mmAir gap flux density -Force factor BL Product 9.3 TmMoving mass incl. air 101 gNet weight 4.6 kgVas 45.6 ltrsQms 4.8Qes 0.52Qts 0.47Outside diameter: 255mmCut out: 225mmDepth: 135mm25.4mm = 1" = 2.54cm Use as is or with 23W passive radiator.