BOSE Bluetooth wireless headphones work with iPhone but not iMac - Profile issue I assume - but why not!!!!

I have a great pair of BOSE wirless headphones that connect faultlessy to my iPhone. I'm very dissappointed however to find that I cannot use the same headphonse on my iMac or my MacBook Air. I assume it's a bluetooth profile issue but in product utility terms it makes no sense. Is anyone aware of a way of circumventing this resytiction (e.g. third-party product, mac setting,...etc)?