JBL/UREI 6290

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	20 Hz to 20 kHz 1kHz 8 Ω, Both channel operation : 300W+300W 400W+400W 4 Ω, Both channel operation : 600W+600W 700W+700W 8 Ω, bridge (mono) : 1,200W 1,350W
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
Pwer	100 VAC, 50Hz/60Hz
Power consumption	120W (idle) 1,400W (at rated output, 8 Ω, stereo) 2,000W (Rated Output, 4 Ω, stereo)
External dimensions	Width 483x Height 178x Depth 356 mm
Weight	28.6kg