Hi,
just purchased a pair of Infinity Kappa 7s and unsure as to whether my Jolida sj502a amp will have enough power to feed them for extended periods. Should i upgrade my amp ?
Kappa 7 / 7A
Introduced: 1987
Dimensions: 94 x 43 x 31 cm
Bass: 1 x 30 cm
Mids: 1 x Kappa-Polydome
Highs: 1 x EMIT
Suggested for amplifiers with: 40-200 Watts per channel
Frequency range: 37 Hz - 45 kHz
Crossover frequencies: 800 Hz, 4500 Hz
Suggested price (pair): 1500 $
Nominal Impedance: 4 to 6 ohms
Power Rating: 40-200 watts RMS
Efficiency: 88 dB @1 watt, 1 meter
Crossover Frequencies: 800Hz, 4500Hz
Frequency Response: 37Hz-45kHz +/-3dB
Introduced in 1987
Discontinued 1989
Specifications: Jolida SJ502A
- Maximum Power Output:85 wpc at 8 ohms, 1KHz Rated Output:60 wpc at 8 ohms, 25Hz to 60KHz Frequency Responseat 1 watt into 8 ohms) 8Hz to
- 130KHz + 1dB
- Bandwidth:15Hz to 80KHz + 3dB; 0dB 60 W 1KHz
- Distortion THD:Less than 1% at 20 V output, 28Hz to 15KHz
- Circuit Type:Ultra Linear, Class AB
- Input Impedance:100Kohms
- Input Sensitivity:600mV at 1KHz for 60 watt output-
- Output Impedance:4 ohms and 8 ohms Negative Feedback: Less than 5 dB Noise and Hum:85dB below rated output
- Tube Complement:2 matched pairs (4) of 6550/KT88 power output; 2 pcs. 12AX7A/ECC83 pre-amplifier; 2 pcs. 12AT7/ECC81 power drivers.
- Power Requirements:110V-120 VAC 60Hz 180 watts-standby, 450 watts maximum (220 VAC 50Hz option). Dimensions:17 inches (43cm) wide by 1 5 inches (38cm) deep by 7.5 inches (19 cm)
- high.Weight:39 pounds (18 Kg)
- Price $1100 new, average used $650-$700