Thank you for the picture, that was the last thing what I didn’t know. I thought it would make sense to put the speaker on the back.    Yes, I bought it directly this morning, the seller was great. I think the speaker will arrive next Thursday or Friday.    Are you from Germany? I still need another one, but that’s not so urgent.    Greetings - Q. 

There´s nothing difficult to mention , the minus phase ( black ) with it´s poleshoe from the woofer is the small chassis connector , the plus phase ( red ) with it´s poleshoe the bigger chassis connector . As the woofer is very heavy it´s better to replace the new one by placing the RF7 II on the back      I have just seen that you have already bought the woofer, the price was fair.

Mark, you are being reasonably harsh with your wrong judgement and definition of "real." Especially from a guy who was never there! I was down there TWICE.   The buyer/now seller was likely, maybe ONE of less than a handful of bidders at the Auction via proximity. I was aware of it at the time (4 years ago?) and I did not want to drive all those miles from MI to SC to bid against him. He got TAD drivers, K402's, the Martinelli horns and drivers and TWO the 4 of a kind GOLDEN Jubilee bins for about $8,600 and change as told to me by the auctioneer, as AFAICR. He started at $120,000 on Ebay originally. Good Luck!   About a month after the auction, I drove down there and got the "leftovers" which was a pair of modified Clones that I was actually PAID by the Klipsch PRO dealer to build on with his great Table Saw back in June 2012. I even found my original blood stain in one of them, LOL. Got those, a pair of 12" passives and some woofers for my stock.   In 2012, we used the Golden Jube for reference and I looked inside to find it was stuffed with foam. Not sure the production version for Theaters had and if Rigmas' had foam too, that I can't know for sure.   The Dealer lacked the ability to do my part, which was to find the best of 3 different Passive Radiators to put in between the upper lower 12" drivers. We used Eminence woofer he wanted to try with the Neo magnets. I curved the Clones vs. the Goldens in the same corner of his living room. I proved to him that it was a waste of time, when the curves showed no improvement of the Passive Triple 12 slot (slightly taller) Clone we built. There simply was NOT enough AIR in the rear chamber to make a passive work any better than the Golden.   This experimental knowledge was the basis for my observation of the NEW Jubilee That Roy Designed with the ports. The reason THAT design even works, with DSP's of course, is that he has several cubic feet of AIR in the rear chamber. A necessity any decent bass reflex designer understands. Roy had already done that the 1802, so those lessons were now applied the the Jubilee. A very clever way to get lower bass to a room shaking 18 Hz. in a small mouth, 65 Hz. Horn!   Of course I was chastised here for mentioning that FACT and even when I showed Roy's own U-Jube curves from 2007, it still pissed off everyone. It's all good and I no longer care.   So now that I own those taller Jube "clones" and drove 2,000 miles to end up with Six K-31's, I will have the only pair in the world with that horn and configuration of 3woofers  in parallel. According to Hornresp Simulations, they will do 135 db with a 15 Watt input. In corners, they will go down to 40 Hz and have stupid LOW IM distortion. I will cross them at 50 Hz. down to my Super Tapped horns with monster 12's that go down to 16 Hz. The Jube bins will cross at 300 Hz. to a dual concentric compression driver from b&c in a K-402 when I finish them this summer. I much prefer as Separate Sub vs. 20 db of PEQ at 22 Hz. like the new Jube.   Also, FYI, I also own via SETI, those large Tractrix midbass horns that JWC designed and built in a photo a few pages ago.   I have not posted much since my heydays here, but I'm still going forward with all the horn lessons learned from everyone in this hobby and industry. Even from different maufacturers.   Peace, Love, beatles!      

Upon further inspection in comparison I can see that at some point it's life somebody has changed the speaker binding posts. Someone also removed the game pots and in their place moved the RCA input jacks. So now I have two holes where the jacks used to be and input jacks where the gain knobs used to be. It's like being an audio detective!

You are welcome... yes, that should do it. Correctly connect the plus and minus+- wires and may need to gently pry open with a small screwdriver or knife blade after removing screws. When you open, check your wires for connection. More than 1 person has replaced when not needed. Sometimes just loose connection so, check connection on the back, etc. from the power source. Another check is to try supposed bad speaker to a known good source with a short speaker wire... @Quentin-Mania

You're absolutely correct that that is the same model. Thank you so much for that!   After going through that thread and seeing an image with the exact writing on the bottom of the authors amplifier I am 100% sure that I have that same exact amplifier in my setup right now. If you compare the writing on the bottom of his to the writing of the one I posted in my first post it's identical. Looking at the author's location they are in Florida. I am in Baltimore. This amp is traveled. I understand that Will Vincent is on the west coast somewhere maybe Idaho? Already you guys and gals have helped me figure out some of this amplifiers history. Whenever I have pieces like this I absolutely love it and love finding where they've been and to know how they travel to end up in my room!

Thanks for welcoming me, I really appreciate that. 😊   I just have to remove the four screws, then unplug the cable inside the speaker and remember where I have to connect it again. Then reattach the four screws. No Power to the woofer is important. Is it better to let the speaker stand or change better horizontally? And is it easy to recognize Plus and Minus, don‘t wanna make a mistake.    thanks in advance for all the very good advices.   best regards  Quentin

Welcome @Quentin-Mania... nothing unless you want to. Any questions or concerns? No power to the woofer when replacing.    

As a debilitated old fart this Bill Gaither song says it all!!!   Maynard    

Is it easy to replace the woofer, are there any specific things I have to mention?