rockford bd 1000 bass knob

all right i have a rockford fosgate power series bd1000 amp that i bought brand new about 4 years ago. which to my knowledge would make it gen. 2.  it has been an awesome amp for me and i love it to death but as of recently it has been cutting out constantly.   now i know that this may sound like a power problem but i have found that the amp gets constant power and audio signal.  the one thing that did bother me was when i go and grab for the bass knob and wiggle and pull on the chord to the bass knob it comes back and works properly. now... i think that what i need is to either replace that chord or the whole knob and chord.  the question is...    i have seen so many different bass knobs made by rockford.   will any of them work.  i ask this because of all the knobs i have seen, none have looked like mine.   

the ones that i see are rectangular in shape,  mine is an oval with ridges all around it

can anyone help?

yes, the knobs are interchangable... to an extent.

older amps used a 4 line cable, just like a phone cord. newer amps use an 8 line, just like a computer networking cable. if you have a 4 line amp, you need a 4 line knob.. and vice versa. you should be able to find them on ebay easy enough..