JBL 7126

Little is documented about the JBL 7126. What the record shows: it's a professional power amplifier from JBL, with the surviving information consisting almost entirely of a single set of specifications with no production years, original pricing, or historical context attached. Nearly everything else — circuit topology, market positioning, user reception, collector status — is undocumented.

What is known comes from one source and paints a picture of a serious, high-power pro amplifier. The 7126 is rated at 2 x 1100W into 4 ohms continuous, with a peak figure of 2 x 2100W into the same load. Frequency response is specified at 20Hz–20kHz (±1dB), with total harmonic distortion below 0.05%, a damping factor greater than 200, and a signal-to-noise ratio above 110dB. Input sensitivity is 2.0V. Physically, it's a standard 19-inch rack-mount unit: 483 x 133 x 420mm (W x H x D), weighing 21.2kg.

These figures place it firmly in the realm of installed-sound or large-venue touring amplification — this is not a home hi-fi piece. Beyond that, the record is genuinely thin. If you own one, or have service literature for it, that would be a real contribution to the archive.

Power: 2 x 1100W / 4 Ohm (continuous); 2 x 2100W / 4 Ohm (peak)
Frequency Response: 20Hz – 20kHz (±1dB)
THD: <0.05%
Damping Factor: >200
Input Sensitivity: 2.0V
SNR: >110dB
Dimensions: 483 x 133 x 420mm
Weight: 21.2kg