Hi all. I was browsing eBay and came across a Pioneer CK series boombox being sold from China.
This box has the flat woofer speakers(CS-C11).
Type in Pioneer and boombox and you'll find it.
or click here
http://www.ebay.com/itm/PIONEER-FA-...ultDomain_0&hash=item35b4f297cb#ht_775wt_1054
The seller states the unit is in normal working condition. This is NOT true.
I can easily tell from the pictures since I own all of these units already.
The units woofer surrounds are rotted which yields no bass in its current condition.
The only thing holding the diaphragms in place is the voice coil.
When played it will sound scratchy with no bass at all.
On the upside, its an incredible boombox that would sound awesome if restored. It is
comparable to the output of a Telefunken Studio 1 / 1M.
Surrounds are not available for this unit anymore so replacement surrounds must
be fabricated which is a very difficult task.
Just looking out for my fellow boomboxery members. - brett
This box has the flat woofer speakers(CS-C11).
Type in Pioneer and boombox and you'll find it.
or click here
http://www.ebay.com/itm/PIONEER-FA-...ultDomain_0&hash=item35b4f297cb#ht_775wt_1054
The seller states the unit is in normal working condition. This is NOT true.
I can easily tell from the pictures since I own all of these units already.
The units woofer surrounds are rotted which yields no bass in its current condition.
The only thing holding the diaphragms in place is the voice coil.
When played it will sound scratchy with no bass at all.
On the upside, its an incredible boombox that would sound awesome if restored. It is
comparable to the output of a Telefunken Studio 1 / 1M.
Surrounds are not available for this unit anymore so replacement surrounds must
be fabricated which is a very difficult task.
Just looking out for my fellow boomboxery members. - brett
One good thing too, is it's coming from Peppin. I think it might be slightly overpriced in its current condition though. But, if someone has the money and patience to restore it, that person will have one hell of a boombox! 
.
.

maybe Peppin has never heard a properly working version which would mean he has nothing to judge it against as far as sound quality. Peppin has had a good reputation over many years, I would trust him over the bulk of the chinese sellers who seem to have limitless GF-777's.