Upgradability isn't listed anywhere here but the bracket is only 1. This is the bracket I wanted having previously bought a pair from a radio shop. but who wants to order a mount at this price? close to the price of a pair. I think I should have known better. fool if they can. absolutely not worth the time, effort and most importantly the money. Do not buy unless you want to pay more for 1 bracket to install 1 speaker.
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