PoorManQ45 wrote: This is do to a standardization of speaker basket mounts quite awhile ago
I think you’re mistaken, there isn't any standardization, the reason the baskets are the same is because very few speaker brands actually build all the componets themselves they only assemble them.
There are only a handlful of manufactuers that stamp steel baskets and the others companies buy theses to build their speakers. If there is standardization how come there are so many different auto and home speaker sizes?
Think about just car sizes; 2in, 3.5", 4", E4", 5.25", 6.25", 6.5",6.75", 7", 8", 10", 11", 12", 15", 32", 36", then there are the oval shapes 4"X6", Euro4"X6", 5"X7", 6"X8", 6"X9". Does that sound standarized? Yes 6" speaker should fit in 5.25" hole due to the basket size but this isn't standarization, it's simple math and engineering of the vehicle sound system. If a vehicle has been build for a factory installed 6X9 then a 6.5" speaker isn't going to be the same or standard for that car. Standardization would be Nissan deciding to use all the same size and type of speakers in every vehicle they build to save money on the economies of scales by using the same standardized parts. The reason there isn't speaker standardization is so that indivdual speaker companies can differentiate there product from other companies products and market them with higher margins.
Some of my favorite speakers are slightly larger than other manufactures of the same size designation. Some have different types of magnets or motors and this changes the dimensions of the speaker too.
Modified by Silvia2b at 11:31 AM 1/16/2006