I am a believer in crossover upgrade as it results in very high improved performance at a much less cost , and found it cheaper ( less costly ) way to upgrade than to buy a new pair of speakers.
Simplest way is to replace and upgrade on quality of capacitors , resistors, internal wiring , go value/rating strictly matching with the old ones, but to go for much higher quality.
You can do it with help of some local electronic shop guy . Sending all the way to Canada may become expensive. Replacing these parts is easy , but if you have damaged drivers and want to replace them also may be you can think to send them to partsconexion . Another place to consider is parts express ( I think I recall it right) .
Simplest way is to replace and upgrade on quality of capacitors , resistors, internal wiring , go value/rating strictly matching with the old ones, but to go for much higher quality.
You can do it with help of some local electronic shop guy . Sending all the way to Canada may become expensive. Replacing these parts is easy , but if you have damaged drivers and want to replace them also may be you can think to send them to partsconexion . Another place to consider is parts express ( I think I recall it right) .