I believe that's the purpose of the JL Bass Knob. If not let me know...and bump to the top. I know someone's got one or two....and could tell me if I could split one to two with a y-splitter since it's simply a telephone cord that connects the knob to the amp.
I have a brand new one I bought for my 500/1, but the amp got stolen. Its in my garge. I'll get a pick if you want. Let me know how much your willing to give for it.
Sorry about your loss, and PM'ed on the knob. Bump since I still don't have one and probably need two... calling JL now to find out if I can split on the two amps.
Money sent on the knob. Also, in case someone else ever has the same question. I called JL and they recommended setting up the two 1000's in a master slave config and only using one knob for both. Worked beautifully! Thanks for all the input from all.