There are Tannoy Dual Concentric Driver speakers with an additional screwed-on tweeter magnet.
We're talking about versions that have a 1" / 25.4 mm voice coil.
The replacement diaphrams for these speakers are no longer available from the manufacturer Tannoy.
There were 2 versions of Diaphragms. The membrane and the black plastic carrier are identical in both. The difference lies in the arrangement of the connection terminals and the voice coil.
The version with a round wire voice coil has the connection terminals parallel and close to one another.See the pictures with number 2 and 3 !
This spare part is installed in:
6.5" 1662 Sixes 613
6.5" 1666 Definition D100, Definition D300
6.5" 1673 Profile 636
6.5" 1678 i6 AW, i6 MP, System 600
6.5" 1688 Saturn S6
8" 2033 Sixes 609, Sixes 611, Sixes 615
8" 2040 Sixes 609 mk II, Sixes 611 mk II, Sixes 615 mk II
8" 2043 Profile 637, Profile 638
8" 2046 CMS 8 DC, CMS 8 TDC, i8 AW, i8T AW, i8 MP, Profile 635 / D50, System 800, System 800A
8" 2049 Sixes 706 Anniversary, Sixes 707 Anniversary, Sixes 708 Anniversary, Sixes 806 Century, Sixes 807 Century, Sixes 808 Century
8" 2064 Saturn S8
8" 2069 Dimension TD8
8" 2102 Sandringham SE
10" 2513 System 1000
10" 2518 Kingdom 12
10" 2527 Glenair 10
The version with a flat wire voice coil has the connection terminals offset by 180°. See the picture with number 4 !
This spare part is installed in: