JBL G-734
The JBL G-734 is an AM/FM stereo receiver from a period when JBL, better known for loudspeakers, was also putting its name on electronics. The record on this model is thin. No production years, original price or design details have surfaced. What is documented comes down to a consistent set of specifications.
The G-734 is a straightforward 65-watt receiver. The most commonly cited figure is 65 watts per channel into 8 ohms from 20 Hz to 20 kHz, with both channels driven. The THD figure is where sources diverge slightly: one lists 0.03%, another 0.08%, and a third appears garbled. The cleanest figure, from audio-database.com, is 0.03%, but given the conflict, treat the exact distortion number with some caution. Damping factor is 30 at 8 ohms, 1 kHz, and frequency response is rated at 20-20,000 Hz ±1 dB.
The tuner section is reasonably specified. FM sensitivity is 1.7 µV (11.2 dBf), signal-to-noise ratio is 71 dB mono and 63 dB stereo, distortion is 0.2% mono and 0.3% stereo, and selectivity is 80 dB. AM sensitivity is listed at 350 µV/m with a 45 dB S/N ratio.
The G-734 is a big, heavy receiver. It measures 18-3/4" wide by 6-3/8" high by 13-7/8" deep (475 × 162 × 353 mm) and weighs 31 lbs (14.1 kg).
Beyond its listing in period equipment directories, almost nothing is recorded about the G-734. There are no owner impressions, no service notes and no market context. It appears to have been a competent mid-power receiver from JBL's electronics era, but the written record doesn't go deeper than the spec sheet. A period preview in Mix Magazine (September 1987, p.72) documented the era's professional audio landscape, though the G-734 itself was not specifically featured.
Known Specifications
- Power output: 65W + 65W into 8Ω, 20–20,000 Hz (THD 0.03% per one source; 0.08% per another)
- Damping factor: 30 (8Ω, 1 kHz)
- Frequency response: 20–20,000 Hz ±1 dB
- FM sensitivity: 1.7 µV (11.2 dBf)
- FM S/N: 71 dB mono, 63 dB stereo
- FM distortion: 0.2% mono, 0.3% stereo
- Selectivity: 80 dB
- AM sensitivity: 350 µV/m
- Dimensions: 18-3/4" W × 6-3/8" H × 13-7/8" D (475 × 162 × 353 mm)
- Weight: 31 lbs (14.1 kg)
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