[Elecraft] K-3 External Speaker Issue

[Bill Robbins]

I bought a Logitech External speaker for the K-3 and it works great.  
The woofer is the master unit has a 15 pin socket for connections.  I 
need an extension cable.  The cable looks like the VGA 15 pin, 5 pins in 
3 rows.  However a VGA extension cable does not work.  Has anyone else 
ran into this and maybe have a solution??

Thanks

Bill
WA8CDU