How many brands use own drivers?

HTD (entry-level home theater speakers) 
Chane (same category) 

Clearly B&W

The idea that manufacturing one’s own speakers is a question of ignorance of the cost of product development costs and those of purchasing or developing and manufacturing the equipment as the additional cost of QA. This said, companies like Totem by raw drivers and then customers them and other speaker designer/manufacturers may have customization contract manufactured. On top of this, the cost of components is a fraction of the total cost of bringing a product to market. Analysis of component costs is a foolish one, just like tear downs of Apple products. And with audio equipment there are costs of artistry that factor significantly. Finally, there is the question of both quantity production relative to recouping R&D/development costs. So the next time someone says, gee, the cost of that $50,000 piece of equipment is outrageous, well, if you only sell 10 a year, get the idea? If there is greater production of lesser products that take advantage of the R&D and can provide greater yields...Business is about profits and if the company isn’t turning a profit, then they won’t be there to support you next year. No different than manufacturing a Ferrari.

ATC

Boenicke W11,W13