Power cable for REL sub -- modestly priced


Does anyone have a suggestion for a longer cord for a REL 328 sub? It has a class D amp.
Before you suggest high dollar cords, please know that I'm not a skeptic, but am tapped out for power cords. And, for what it's worth, I had a Pangea AC9 1 meter power cord which I experimented with using my REL. Made zero difference. In fact, in an exchange with REL, they said this: "A while back, REL tested some third party power cords with our subs but did not find a noticeable impact."

So, my question is about a decently made but not pricey brand of extension cord for a REL sub. I'm not looking for Shunyata etc.  Any suggestions? Thanks.
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Many of the cable manufacturers offer ready made AC cords in 12 and 14 gauge (the 12 gauge cords usually require a separate AC outlet plug).  You can search Amazon for these plugs.  Also Amazon has hospital grade 14 gauge power cords ranging in price from $20 to $30 dependent on the brand for 10 ft lengths (named brands like Tripp Lite or Volex at the higher end).  These come with much more robust plugs.
I've got 2 REL T/9i subs and I'm using 2m power cords by Viborg.  They're selling on Amazon from $45 for 2m.  When I need a longer cable I connect two together with an adapter. 
Hello, 
based on MC’s research and you need a low cost option I agree with djones51. Just grab a good extension cord. I like the idea of the IEC extension cord but I don’t like the guage step down from the factory AWG. REL probably made the 10AWG cable for 20 amp circuit. Usually if you are doing a longer run you should up the AWG of the wire. Home Depot makes extension cords for refrigerators or air conditioners. I would just use the extension cord from the wall to the REL plug. Later when money is freed up you can test some Better PC’s.