I am very happy with the AQ BFA connectors recommended above on my speaker cables... they provide a very secure fit. For my REL sub, I got the SL-1 Universal Spade Lugs from LAT International for $12/quad. They are copper and crimp style. Cheap and cheerful!
Recommendations for spade lugs for 14 ga conductor?
I see several spade lugs, such as Furutech and AQ, but they seem to designed to accommodate much large diameter conductor than the 14 ga. Canare 4S11 conductor that I am using for my subwoofer. Any recommendations would be appreciated, including crimped-style lugs. Thanks.