The KEF Calinda (SP1053) is a classic floor-standing loudspeaker introduced by British manufacturer KEF in 1976.

Design and Technology

• Total System Design: Released alongside the Corelli and Cantata, the Calinda was one of the first models to use KEF's computer-assisted "Total System Design" methodology.

• Driver Configuration: It featured an 8-inch two-way system augmented by an auxiliary bass radiator (ABR) to improve low-frequency response.

• Inverted Layout: The tweeter (T27) was positioned below the woofer (B200) rather than above it, an unconventional layout part of KEF's engineered acoustic integration.

• Production Era: The speakers were typically manufactured and produced from 1976 through 1980.

Technical Specifications

• System Type: 2-way, 3-driver floorstanding system with passive radiator

• Enclosure Volume: 45 liters

• Frequency Range: 40 Hz to 30,000 Hz (±3 dB)

• System Resonance: 28 Hz (mechanical reflex)

• Nominal Impedance: 8 Ω

• Rated Maximum Power: 100 W programme

• Amplifier Requirements: 15 to 100 watts per channel into 8 Ω

• Sensitivity: 12.5 watts for 96 dB at 1 m (measured at 400 Hz under anechoic conditions)

• Crossover Frequency: 3,500 Hz (utilizing the KEF SP1055 crossover network)

This model (no grilles) was fully refurbished.