Used in the legendary Spendor BC1 & SP1; Bowers & Wilkins (B&W) DM2, DM2A, DM4.
Also used in various transmission line designs by IMF & Cambridge.
These new old stock tweeters have been individually tested by the UK's leading independant specialist loudspeaker manufacturer ~ they are guaranteed to work perfectly to specification.
Here are the specs:
Frequency Range: 1.2KHz - 35KHz
Useable Frequency Response: 8KHz - 35KHz
5KHz - 25KHz
Free Air Resonance: 1.6KHz
Nominal Impedance: 16 OHM
D.C. Resistance: 23 OHM
Max. Continuous Sine Handling: 120W
System Programme Rating (Rec. Max): 120W
Mounting Hole: 61mm
Dome Material: Polyester
Also available: Coles 4001K 8 Ohms