JBL/UREI 6290
¥ 440,000 (around 1987)
¥ 420,000 (around 1988)
Commentary
Dual channel power amplifier developed from acoustic technology and amplifier theory in SR.
The input circuit uses a dual-FET balanced bridge differential input method and the driver stage uses a complimentary service cascade connection to improve the drive capability of the bipolar transistor to the Darlington power stage.
In addition, we have achieved high stability by optimizing feedback at each stage and minimizing overall feedback.
It can also be used as a monaural power amplifier by bridge connection.
Model Rating
Type | Stereo power amplifier | ||||||||||||
Rated output |
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Frequency characteristic | 20 Hz ~ 20 kHz + 0 -1dB | ||||||||||||
Total harmonic distortion factor | 0.01% or Less (0.25W ~ Rated Output, 8 Ω Load) | ||||||||||||
Cross modulation distortion factor | Not more than 0.1% | ||||||||||||
Signal-to-noise ratio | 100 dB or more | ||||||||||||
Input impedance | Balanced : 40k Ω Unbalanced : 20k Ω |
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Pwer | 100 VAC, 50Hz/60Hz | ||||||||||||
Power consumption | 120W (idle) 1,400W (at rated output, 8 Ω, stereo) 2,000W (Rated Output, 4 Ω, stereo) |
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External dimensions | Width 483x Height 178x Depth 356 mm | ||||||||||||
Weight | 28.6kg |