KEF Cadenza bass radiator pair SP1042, in good condition and, showing dust and minor cosmetic wear.
A matched pair of KEF bass radiators as fitted to the Cadenza loudspeaker. These are passive auxiliary diaphragms, moulded by KEF Electronics Ltd at Tovil, Maidstone, England, and used to extend low-frequency output in a mechanical reflex arrangement rather than being independently driven.
Key specifications
Diaphragm Dimensions (W x H): 300 x 210 mm (approx. 11.8 x 8.3 in) — flat elliptical
Overall Depth: 44 mm (1.7 in)
Diaphragm Material: Flat polystyrene cone
Resonant Frequency: 28 Hz
System Resonant Frequency (in Cadenza cabinet): 35 Hz (mechanical reflex)
Specifications
Compatible Brand: KEF
Colour: Black
Country of Origin: England
Item Weight: 0.650 kg per unit
Year Manufactured: 1970s
Mains Voltage: 240V
Model / Part Number: BD139 (SP1023 / SP1037 / SP1042)
Diaphragm Dimensions (W x H): 300 x 210 mm (approx. 11.8 x 8.3 in) — flat elliptical
Overall Depth: 44 mm (1.7 in)
Diaphragm Material: Flat polystyrene cone
Resonant Frequency: 28 Hz
Weight (per unit): 0.650 kg (1 lb 6.9 oz)
System Resonant Frequency (in Cadenza cabinet): 35 Hz (mechanical reflex)
