I don't think so Simon, they were cheaply made and cheaply priced, but they still didn't sell enough to stay in business.
Don't forget also that AVI are a much older company (1989) than Epos were before they went into Creeks holdings.
JC
There is some very distorted information here, so perhaps it could be useful to bring a little balance.. I worked for a hifi store here in Holland at the time the ES14 was a current product and it was our best-selling speaker at anything up to double the price. I do not remember exactly the quantities that we sold, but it was around 8 or 10 pairs a month. Cheap is certainly not a word that comes into my mind when I think back to the way the speaker was built. The construction and the materials were actually rather special and it was very common for customers to come to the store to buy a Kef or a B&W or a Linn and change their mind when they saw the quality of the ES14.
Epos began in 1983 and the ES14 was only a part of what the company did. Their major activity was consultant design and development work with a particular specialty in the area of precision transducers. I don't think that selling enough ES14s was ever a problem. On the contrary, I think that the volume of sales became such that Robin Marshall felt trapped and unable to pursue his other interests. The company did not go out of business (it was too successful and too broad-based for that). The Epos brand name and all of the tooling for the ES14 were sold at the end of 1988 to TGi, who already owned Tannoy, Goodmans and Mordaunt-Short. It was TGi who made the approach and if my understanding is correct it was because they wanted to add a flagship brand to their portfolio.
I do not understand the purpose of comparing the ES14 with the AVI ADM9. They are two very different products. In addition the AVI speaker is a current product, while the ES14 has not been in production for close to 15 years.