The Supro 1700 1�12 Extension Cabinet is the ideal companion to the 1600 Supreme and 1610RT Comet combo amplifiers.Sized to fit perfectly underneath our classic series 1�10 rigs, this partially open-back, vintage-style cabinet is loaded with a Supro BD12 speaker. This custom-made, high-power driver originally designed for the Black Magick amplifier contains a specialty British cone, top-of-the-line suspension and an oversize ceramic magnet, adding considerable punch and projection to the Supreme and Comet rigs.With the 1�12� extension cabinet connected along with the combo�s 10� internal speaker, the Supro Supreme and Comet amplifiers run down at 4-ohms, developing maximum power from their Class-A output sections. The Supro 1700 Supreme extension cabinet adds considerable versatility for larger stages and pedal-based rigs where maximum headroom is required from a compact, vintage flavored combo.Specification:� Supro BD12 Speaker� 75 Watts power handling� 8-Ohm Mono� British Cone� 2� Voice coil� 56oz Magnet� 17 5/8? x 7 1/2? x 15 1/2? � 44.7 x 19 x 39.4 cm