2445J what kind of diaprahma here?

[jbljo]

Hello,
I open today this jbl driver 2445J,curious to know what kind of diaprahma inside.Anyone who can tell me on photo? AL-Titanium-Aftermarket?
I see only datemark on it.(8-1995)

Many thank's in advantage

[martin2395]

Ribbed titanium, original JBL.

[jbljo]

thank's Martin 2395,good to see you here also:),