What's the difference between these drivers?

bcbud3

What is the diff between the polk monitor 10 mw6500/6503 and the 5 jr 6502? Can i put the 6502 into my monitor10 box?

bcbud3

pt#6502 versus pt#6500

F1nut

They are not interchangeable.

bcbud3

are the mw6503 still available from polk? anyone know the current price?

Nightfall

Not sure how accurate this list is. All vintage replacement drivers are $50.

http://forum.polkaudio.com/discussion/118471/current-production-drivers-vintage-support

bcbud3

can someone tell me what the part number was for the original monitor 10 mids? The grey basket type. Mine don't have either label. Is it wm 6500 or wm 6501? Thank you

westmassguy

Most likely the 6500. They pop up on eBay from time to time. Polk will probably substitute the 6503, but if you want them to look as original, with the fiber gaskets, then your only source is eBay.
Check the DCR of one of the original woofers. If its around 6.5 ohms, it's a MW6500. If it's around 7.5 ohms, it's a MW6501.

bcbud3

is it ok if i leave them wired up when i check it?

westmassguy

bcbud3 wrote: »

is it ok if i leave them wired up when i check it?

No, you should disconnect at least one wire.

stogie

bcbud3- Did you check the bottom of the speaker cabinet for the label(s)? That's where i found the label that had fallen off of a monitor 10 mw6500 driver.

bcbud3

i did not look for the label but i disconnected the speaker and it sits at 6.6 ohms. Is there a way to realign the speaker so it stops rubbing or would i be better off to buy a replacement. Are all mw6500 6.6 ohms? Am i ok to replace one driver with the mw6503?

westmassguy

bcbud3 wrote: »

i did not look for the label but i disconnected the speaker and it sits at 6.6 ohms. Is there a way to realign the speaker so it stops rubbing or would i be better off to buy a replacement. Are all mw6500 6.6 ohms? Am i ok to replace one driver with the mw6503?

Sounds about right for the MW6500. Voice coil rubbing could be due to magnet shift, or overheating. Some CP Members have successfully re-aligned the magnet assembly by making a special jig. It's time consuming, and requires precise alignment of the front plate, magnet, and back plate. If the rubbing is due to overheating, the woofer is toast.
The MW6503 will work fine, but you should replace them in pairs. One 6503 in each cabinet, in the opposite or mirror position. This will ensure both speakers sound the same. As I said previously, the 6500s do show up on eBay, and would be a perfect match. Just be sure the seller understands how fragile they are, and wraps them with lots of bubble wrap and padding.
The replacement drivers from Polk require trimming of the rubber surround. On the new drivers, the rubber overlaps the mounting holes, and can rip or tear when the mounting screws are tightened.