can i increase the impeadance of a driver?

[larrellio]

sorry if this qwestion belongs in a difrent forum or has allready been asked and answerd, i spent an hour on the clock sifting thru
the site and didnt find much.
so my qwestion,what resistors are deasent parts at a reasonable price.
the problem, my boss has asked me to rez-or-wrecked his old 1974 jensen home stereo speakers, they have holes for- one15"subwooer, one 7" woofer,one 4"mid, two 3-1/2 tweets.
most of the drivers are hashed, the 15's fell prey to a cat who used the cones as a scratching post ans the dome tweets have no domes, the mids might be ok i havent tested them.
so the boss bought him self some 15's but he got 4ohm subs when the jensen set is 8ohm.
are we scewed? can we save the cost of the subs and their replacements?

[CBS240]

The subs likely do not have the same frequency responce either. An 8Ohm amp can't drive a 4Ohm load directly, the outputs will most certainly fail. A transformer maybe? I say take the subs and build a sub box(s) to be driven by a seperate amp fed by a low-pass filter. Then start over with the speakers and buy the correct one(s). At least this way, a passive crossover could be used to seperate the lows out of the two full range boxes, and match with the subs.

[larrellio]

hummm,,, i was afraid that he would have to purchase new 8ohm 15's. to bad for the boss and his pocketbook
but hooray for me and my car, new BIG speakers, WOOT!!!

[larrellio]

i meant to say thanks to cbs240 for responding to my post, but i hit submit accidently.