Betsy - I may be able to provide suggestions depending on where you are located. For instance, there is a pair of JBL L-200 speakers for sale in Tennessee that would sound good as is and which could be used as the foundation for a world class horn system.....but shipping would be very difficult and expensive.
Near Toronto, Canada, there is an itinerant horn maker who has been in the biz for 30 years and who has heard everything and worked with most of it. He consults for many companies you have heard about but has no desire to be involved in the commercial aspects of consumer audio. He does, however, sell the best horns available today and offer expert advice with an eye toward economy.
There are others.
Near Toronto, Canada, there is an itinerant horn maker who has been in the biz for 30 years and who has heard everything and worked with most of it. He consults for many companies you have heard about but has no desire to be involved in the commercial aspects of consumer audio. He does, however, sell the best horns available today and offer expert advice with an eye toward economy.
There are others.