JBL 5600-2 (Unknown Years)

The JBL 5600-2 is a Stage-series 2-channel car audio amplifier sold under the JBL brand. Documentation on this model is thin. No production years or original pricing have surfaced. A period advertisement in Audio (June 1995, p.95) lists JBL among brands stocked by a major retailer, so the brand was on the market at the time. Multiple retail listings agree on the rest: a Class AB amplifier rated at 50W RMS per channel at 4 ohms and 75W RMS at 2 ohms, with a total peak output of 300W. It is CEA-2006 compliant, a standard that verifies amplifier power ratings. That counts for something when peak-power claims often ran wild.

Beyond the power figures, the 5600-2 has a variable high-pass/low-pass crossover (50Hz - 5kHz), a bass boost of 0 - 12dB at 45Hz, and a signal-to-noise ratio above 85dB. Total harmonic distortion is rated at under 0.05%. It measures 12.25"W x 2.125"H x 8.5"D and weighs 5.5 lb. The sources disagree on one spec: input sensitivity is listed as 200mV - 8V by one retailer and 250mV - 8V by another, so the exact figure is uncertain.

No user reviews, repair information, or collector-market data were found. It appears to be a mid-range amplifier from JBL's Stage line, and beyond the specifications above almost nothing else is documented.