Wharfdale Unit 5

Hi. Does anyone have details of the Wharfdale Uint 5 speaker kits that were popular in the early 70s? I built a pair - in the largest suggested cabinets and have recently re-built them following damage to them by rhodents while in storage. I am keen to know their original spec and possibly looking to modify the 3-way crossover as they appear to have a bit too much mid range output - can't remember quite what they sounded like when I built them as it was around 40 years ago!