Are these any good??

[profoundwill]

Would this speaker be a good canidate to build a component system with

Earthquake Sound- 6 1/2'' 50W Midrange Woofer Speakers

[Cruzer]

they only play from 112 hz up, so ur sub will have to play up to 112hz or ur going to be missing, or lacking some frequencies.

might look at these
Goldwood GW-6024 6-1/2" Butyl Surround Woofer 4 Ohm
Dayton Audio DC160S-4 6-1/2" Classic Shielded Woofer 4 Ohm

there are others on that website as well, just check them out, find something with a decent price. 2 things to make sure u check besides price is 1. make sure its 4 ohm, lots on that site are 8 ohm which will be harder to power, if ur amp says it does 100 watts @4ohm, it will do 50@8ohms. 2. check the frequency response. not sure what ur going to do for crossovers, but make sure the speaker can play to the crossover point your wanting to use

[profoundwill]

anyone ever used these

Goldwood GW-S650/4 6-1/2" Poly Cone Woofer 4 Ohm

can they really handle that much power??