The OB1's have an open, controlled and highly musical balance. If your system is up to the job, they'll shine. The 0B1's are a three way design combining a soft dome tweeter, a 75mm dome Midrange unit , in it's own isolation housing and a 170mm Bass unit. Specification Frequency Response 28hz - 25khz Sensitivity 87db 1w 1m Impedance 6ohms Dimensions H 1025 W 200mm D 325mm Weight 21.5kg Due to size, weight and finish - collection preferred and demonstration gladly arranged Please note: Speaker Cables not included Please contact Den on 01652 650820 if you require further information or have any questions - thank you for your interest.The item "Pair of PMC OB1 Floor Standing ATL Transmission Line Hifi speakers" is in sale since Sunday, September 16, 2018. This item is in the category "Sound & Vision\Home Audio & HiFi Separates\Speakers & Subwoofers". The seller is "draf1795" and is located in Brigg. This item can't be shipped, the buyer must pick up the item.