Monitor 7B

cheif pontiac

I thought in my readings that Monitor 7B's had the MW6502 driver (I have Peerless tweeters) . Recently one of my drivers went bad, after I pulled it from the cabinet I noticed it had no markings on it. There is a small Polk logo on the front rubber surround, but nothing on the back magnet indicating date of model. I am going to assume it was replaced at some point. I pulled the driver out of the other 7B and sure enough it was dated and marked MW6500 not MW 6502. Which is the correct model for the 7B.
I picked them up for $90 with stands, which I was happy to get them and felt the price was good as I am not a wood or metal working and having stands was a plus. The cabinets are decent, some dents on the back corners but the front corners are good. The grills are somewhat pilled and should be redone but I know that is a job my dad can do and material is not two much.
If I am stuck buying two new MW6502 I am going to be into the 7B's for over $200. Which I guess is ok, I did not buy them as an investement and would very much like to listen to them.
I guess the final question is which is the correct driver MW6500 or MW 6502 and if it is the 02. will I be Ok picking up a 6500 so I only have to replace one. Was the crossover the same for both drivers?

Thanks in advance for any advice

Oldfatdogs

Hello cheif,I'm going to do my best to help here.To answer your question on the drivers they used both I have one set with 6500 and one set with 6502s.I believe it had to do with early or late within that model 7b.I don't think they are interchangeable the polk production for the 6500 is the 6503.I am not sure about 6502.You can check ebay I think theres some on there. If memory serves me correctly they are different ohms.Here is a link to help you out. http://www.polkaudio.com/forums/showthread.php?118471-Current-Production-Vintage-Support
Hope this helps if I'm wrong someone will let me know .Dan

Oldfatdogs

Heres another that was helpful for me.http://www.polkaudio.com/forums/showthread.php?59876-quot-Special-quot-Monitor-7-What-should-I-do&highlight=monitor

Oldfatdogs

One more http://www.polkaudio.com/forums/showthread.php?50422-7b-s-crossover-help
I have more let me know if you need them.Dan

cheif pontiac

Thanks Oldfatdogs. I appreciate all the info, especially knowing they used two drivers and what the correct replcement is now. I belive mine are older 7B and since the good driver is a MW6500, I think I will replace the bad one with a 6500.
I would like to do the x-overs someday but I have no experience in that at this time, so I am going to have to read up on how to read those schematics. Maybe someday. They sounded sweet before, the driver went so I would be happy just to have them back like they were.

Oldfatdogs

cheif pontiac,your welcome glad I could help you.I have my bookmarks full of monitor 7 and 10 posts.I have been collecting parts sense joining here. I will be doing crossovers soon on my 7s just trying to learn as much as possible before hand.Dan