The wires should measure "infinite" inpedance if there is no speaker attached, otherwise you have a short circuit in the wires.
Do not measure impedance across the speaker wires while both are connected to the receiver or amplifier. This gives no useful information and can blow the amp.
When connecting two speaker units to the same amplifier channel with the same impedance (two wires) connect one wire from the amplifier to one speaker, connect the other wire from the amplifier to the other speaker, and connect a short length of wire between the other terminals of the two speakers (a series connection).
Provided both speakers are each twice or more impedance as the amplifier you can connect them in parallel -- one amplifier wire to both speaker red terminals, tohe ther amplifier terminal to both speaker black terminals.
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Last edited by AllanJ; 08-25-2011 at 09:16 AM.