My experience has been different. I discussed/negotiated with my better-half in terms of how much I would spend on getting a new/upgraded stereo system. Although I have ended up spending a little more than originally agreed and despite occasional outbursts from said better-half, overall it has been OK. For the sake of fairness, my wife spent the same amount on things she wanted for our new house. Not exactly equitable since these include new sofas and appliances that aren't strictly for her benefit, but she does enjoy listening to music from time to time.
I think the advice provided by others in terms of downsizing may be the way to go, particularly if there are budget/debt issues involved. If you have amp/pre separates, try going to an integrated of similar quality but lesser cost overall. Cables: there is a very favourable review at www.stereotimes.com of Signal Cable products, which are said to be of very good quality at affordable prices. Does your HT set-up have more than two channels? If so, try making do with just the two main speakers and, if absolutely needed, keep the sub.
Most important, get your wife involved or, if she's not interested, at least keep her in the loop about purchases.
