Welcome corduroy41. Those are very early AX5s you have. I would say around 1984. The original 1981 version did not have an aluminium cone subwoofer in the rear. I did design them at the NRC using all the technology we had at the time. Those were the early days of understanding the family of curves and the affect they had on Double Blind Listen Test results. Julian Hirsch gave them an outstanding rating back in the day and noted that they were “the flattest loudspeaker he had ever measured”. What we are producing today has all the latest technology built in relating to the family of curves that has been discovered over the past 33 years by ourselves and others. We have also made big improvements in the available dynamic range. So an upgrade to a current model is something you may want to consider at some point. When you are ready let us know because we would give you a trade up value for your AX5s to put in our museum. It is also worth noting that not all speakers available on the market today will sound better than your AX5s; there is still a lot of disregard for the family of curves in speaker design, even today.
