This sounds like a bad idea. Have you checked that the output level of the speakers will be the same at a given power input from the amp? If not, one speaker pair will play louder than the other.
Also, the overall impedance will be below 4 ohms if you put them in parallel. And if you put them in series you'll have over 12 ohms and the output level will suffer.
You could try it but I wouldn't expect very good results. Are you sure the tweeters are working right in the Advents?
Also, the overall impedance will be below 4 ohms if you put them in parallel. And if you put them in series you'll have over 12 ohms and the output level will suffer.
You could try it but I wouldn't expect very good results. Are you sure the tweeters are working right in the Advents?