Anatomy of the Kef Cadenza

Reflexed Speaker box with two drive units and an acoustically coupled bass radiator (ABR)

Specification: (see KEF C Series Leaflet 10/73/C- 3)

Dimensions: 600 X 360 X 300 mm

Internal Volume: 45 litres

Weight: 14.97 kg

Nominal Impedance: 8 ohms

Specific Frequency Response: + or - 3db 40-30,000 Hz measured at 1m on the axis of the HF unit in anechoic conditions

Dividing Frequencies: 45 Hz (acoustically coupled) and 3,500 Hz

Sensitivity: 15 watts into 8 ohms produces 96 db at 1 metre in anechoic conditions.

Rated maximum power: 30 watts

Room size: Up to 200 cubic metres

Notes: Early Cadenza had ABRs with foam rather than rubber collars. These unfortunately disinintegrate with age. It is highly unlikely that any will have survived in good condition into the 21st century. If it is found to be impossible to get an ABR repaired a good alternative is to obtain a similarly sized B139 and remove the magnet from the back of the unit. The B139 without the magnet can then be used as an ABR.

My Cadenzas

Click on the picture above to see further images of the 'anatomy' of the Cadenza