JBL 4726A/4726AP (Circa 1992)
The JBL 4726A/4726AP is a two-way, bass-reflex speaker system from JBL's "Sound Power Series." It was aimed at professional use: small-to-medium discotheques, clubs, and stage monitoring for concerts. It was sold in Japan around 1992, priced at ¥270,000 for the 4726A and ¥280,000 for the 4726AP (per unit).
The system pairs a 30 cm cone woofer with a compression driver. The woofer is the 2206H, which uses JBL's vented gap cooling method. The driver has a pure titanium diaphragm (2426J) and is mated to a 2.5 cm throat biradial horn (2344A). The enclosure is a wedge shape, so it works as a permanent install or as a floor monitor. Crossover is at 1.2 kHz, and the rated frequency band runs 60 Hz to 20 kHz at -10 dB.
The two suffixes mean different amplifier setups. The 4726A is a bi-amp model with separate inputs for the low and high sections. The low section is rated at 8 ohms / 600W (AES), and the high at 16 ohms / 70W continuous program. It uses Neutrik NL8MPR connectors. The 4726AP is a single-amplifier version with the NP4726AP passive network built in, rated at 8 ohms / 600W (IEC), and it uses Neutrik NL4MPR connectors. Both share the same dimensions (286 × 520 × 280 mm) and 18 kg weight.
Documentation on this model is thin. There are no production run dates beyond the circa-1992 pricing reference, and no formal professional reviews have surfaced. One user review on Audiofanzine, from someone running them live for six months, called the sound "very clean" and "very colorful." The 4726A's output sensitivity is listed at 95 dB (low) and 109 dB (high) per 2.83V/m, with maximums of 123 dB and 129 dB respectively.
- Type: 2-way, 2-speaker, bass-reflex, wedge enclosure
- Low: 30 cm cone (2206H), VGC cooling
- High: 2426J titanium-diaphragm driver + 2344A biradial horn
- Crossover: 1.2 kHz
- Frequency band: 60 Hz – 20 kHz (−10 dB)
- 4726A: Bi-amp, 8 Ω (L) / 16 Ω (H), 600W AES (L) / 70W program (H), NL8MPR ×2
- 4726AP: Single-amp, 8 Ω, 600W IEC, NP4726AP network, NL4MPR ×2
- Dimensions: 286 W × 520 H × 280 D mm · 18 kg
The record has one minor discrepancy. A Pinterest listing identifies the woofer as a 2226G, while the Japanese catalog sources cite the 2206H. The manufacturer-derived spec (2206H) is the more reliable figure, so that's what this page uses.
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