Active set up: looking for 5.25" midbass
 

Hello, friends! My buddy is thinking of going active on his front stage. A pair of tweeters(Seas 27TAFNC/G (H1397) 1" to be used, and here is a link.
http://www.madisound.com/catalog/product_info.php?products_id=633

Now we need help choosing a 4-ohm 5.25" pair of midbasses, which would mate with the Seas tweeters, so please help with the model number and a place of purchase. We would prefer to go with something from Seas also for a matching set, but willing to go with something else. Let's try to work with a budget around $200 or less for the pair. Each side will be fed approximately 100 wrms with most likely 4-channel amp(50x4 at 4 ohms, or something like that).

Thanks in advance

Correction: amp power 100x4 wrms at 4 ohms.