Jerry,

Whether plugging into an external mixer or directly into the kb, here are some (20-25 ft) speaker cable (1/4" plugs at both ends) options I'd recommend:

Monster Cable Performer 500 Speaker Cable: http://www.zzounds.com/love.music?p=p.MONP500S20&z=1475280238387

Conquest 16-Gauge Speaker Cable http://www.zzounds.com/love.music?p=p.CNQHPT1625&z=1475280238387

CBI 14-Gauge Speaker Cable: http://www.zzounds.com/love.music?p=p.CBISC1425&z=1475280238387

All the above should work fine though the Monster Cable may provide a slightly better quality & cleaner signal, but costs more.

Another cheap inexpensive alternative is using Hoya brand 1/4 "cable, but I (personally) do NOT recommend going this route as I've found them not durable enough to withstand the continous beating of gigging (plugging/unplugging). I have experienced a lot of unexpected signal problems which are definitely what you don't want, especially during a gig.
Better to spend more money for road worthy cables which are dependable and will offer the cleanest sound quality possible within your budget. Hope this helps. - Scott

[This message has been edited by Scottyee (edited 09-04-2002).]