JBL SR4722A (circa 1994)

The JBL SR4722A is a compact two-way, bass-reflex speaker system from JBL's SR Series. It was built to cover large spaces with a minimum number of cabinets. In Japan it was priced at ¥180,000 per unit around 1994. The optional MT4612EX stand was sold separately for ¥22,000.

The woofer is a 30 cm cone, model 2206H. The high-frequency section is horn-loaded, using the 2417H driver and 2342 horn, and gives 100° dispersion in both the horizontal and vertical planes. The woofer uses JBL's VGC (Vented Gap Cooling) system. A built-in passive crossover handles the 1.2 kHz division point. A switch on the cabinet reconfigures the speaker for bi-amplified operation. In that mode JBL recommended crossing over between 1.3 kHz and 1.5 kHz, with the low section rated at 600W/8Ω and the high section at 80W/8Ω. The enclosure is ported, measures 508 x 711 x 343 mm, and weighs 21.6 kg.

Rated sensitivity is 98 dB/W/m. Frequency response is specified at 50 Hz to 20 kHz (-10 dB), and continuous pink noise handling is 600W (IEC). A 35 mm pole-mount socket takes the optional stand. If you needed more low-frequency reinforcement, JBL pointed to the matching subwoofer, the SR4718A. The SR4722A could also serve as a vocal-only system or for home audio use.

Documentation on this model is thin. No production years, reception or current market data have surfaced. The known facts come from period Japanese catalog listings.

• Type: 2-way, 2-speaker, bass reflex
• LF: 30 cm cone (2206H) · HF: horn (2417H + 2342)
• Frequency response: 50 Hz – 20 kHz (-10 dB)
• Input (IEC): 600W continuous pink noise · Impedance: 8Ω
• Sensitivity: 98 dB/W/m
• Crossover: 1.2 kHz (passive); 1.3–1.5 kHz (bi-amp)
• Dimensions: 508 × 711 × 343 mm · Weight: 21.6 kg

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