Hi all, digging up this thread because i am starting to restore 2 sets of 5700's i have and it does make sense to open them up first, before ordering (wrong) caps:
turns out 1 pair is type 6229 and sn 14201/14048 and the other pair also type 6229 and sn 28034/28013.
i checked 1 woofer (all 4 look the same) and this is an AD1056/W8 (completely covered with white powder btw, aluminum oxide ??)
i checked all filters, all the same but very different from the data shown in this thread: the woofer cap is 75 uF, other caps: 20 uF, 2,5 parrallel with 1 uF so 3,5 uF and no resistors on the woofer but on the tweeter end one of 8,2 ohm and caps of 3,5 uF (again 2 parallel as above) and 8 uF.
another funny thing: the 14xxxpair (most likely sold as a pair) has one with normal metric screws used for mounting the spekaer units, the other one all philips type "woodscrew" (hoe do you call that...not normal thread anyway).
and i was wondering why they are so heavy...well: turns out they have an inner cabinet of proper wood and (probably) an outer cabinet of chipboard' making the cabinet sides and back around 22 mm thick.
what i notice on TS pics is the difference in the center magnet of the woofer: you can see one has some round kind of hole in the magnet, the other a square, my pair has the same thing.
i suppose this was just a result of the factory making the magnets (coming from different machines or something).
if anyone has to add something, feel free: i always think it is interesting with htese older products to see the variations compared to the nowadays 100.000 copy/paste products :)