I need a pair of RCA cables from crossover to amp for subwoofer.

Would a Male RCA to Female RCA adapter work? Might allow you to use the RCA cable you already have.

Something like this (just get 2 and ignore the splitter "function")
https://www.amazon.com/Products-Splitter-Female-Adapter-Connector/dp/B06XKHV689/ref=sr_1_25?s=toys-a...

OR this???
https://www.amazon.com/Female-Right-Angle-Adapter-Plated/dp/B0018MA8LA/ref=sr_1_2?s=toys-and-games&a...

There should be a straight (vs right angle) adapter and with no splitter provision but I didn’t find one in a quick search of Amazon.  Audioquest makes a version of the 90 degree adapter for a little more money.

ghosthouse, 

Thanks for the reply.  Both will work,  but I wonder what they will do to the signal. For $10, I'll order a pair of the right angle ones and let you know.

Thanks again. 

JD

ghosthouse, 

https://www.amazon.com/Female-Right-Angle-Adapter-Plated/dp/B0018MA8LA/ref=sr_1_2?s=toys-and-games&a....

Ordered a pair. 

JD

Hope they give you enough clearance, JD.  Yeah, rather not have something like that in the chain just on general principles, though I personally am skeptical about it being audible.  Just one more black mark against my "audiophile" credentials, I suppose.