JBL SR4706A

Documentation on the JBL SR4706A is thin. The surviving record is a single distributor listing from Brodcom Electronics Corp., which calls it an "Indoor Speaker" in JBL's SR4700 Series, under the PA / Install Speakers category. No production years, original price or dimensions have surfaced. The driver configuration, crossover and cabinet construction are unrecorded in the available material.

What the listing does pin down is a professional install loudspeaker with a frequency response of 56 Hz - 20 kHz, rated power of 300W with 600W program handling, 8 ohms nominal impedance, and a sensitivity of 98 dB SPL (1W/1m). The coverage pattern is given as 60° x 90°. At 24 kg (roughly 53 lbs), it was a substantial piece of hardware. The SR4700 series shows up in passing in period trade coverage. Mix magazine (1998, p.148) lists a JBL model in a survey of professional loudspeaker systems, and EQ magazine (1998, p.114) mentions amplifiers in a touring rig context. Neither addresses the SR4706A directly.

Beyond that, the record is what it is. The SR4706A is known mainly through its model number and the basic electrical specs above.

- **Type:** Indoor speaker (PA / install), SR4700 Series

- **Frequency response:** 56 Hz - 20 kHz

- **Power:** 300W rated / 600W program

- **Impedance:** 8 ohms

- **Sensitivity:** 98 dB SPL (1W/1m)

- **Coverage:** 60° x 90°

- **Weight:** 24 kg

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