JBL 4681
¥ 500,000 (1 unit, around 1976)
Commentary
This line-array-type speaker system was developed as a PA system for vocals and musical instruments in halls and concert halls.
The unit is equipped with 4 units of 25 cm cone type full range K110 which is a unit for JBL musical instrument.
The enclosure is made of solid and lightweight plastic, and the interior is made of a bass-reflex system.
The 4681 is designed to improve the middle and high range by adding the separately sold Power Pack 2901/2902. Also, the 4682 released around the same time was composed by adding 2902 to the 4681.
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Model Rating
| Method | 1-way, 4-speaker, bass reflex system |
| Units Used | For Whole Area : 25 cm Cone Type (K110) x4 |
| Playback frequency band | 55 Hz to 8 kHz |
| Directional (Horizontal x Vertical) | 60 ゜ x40 ゜ |
| Impedance | 8 Ω (minimum 6 Ω) |
| Output sound pressure level | 100 dB (New JIS) |
| Allowable input | 600W (continuous program) |
| External dimensions | Width 440x Height 1,320x Depth 340 mm |
| Weight | 36kg |
| Sold Separately | Power Pack 2901 (1 unit, ¥ 125,000) Power Pack 2902 (1 unit, ¥ 110,000) |
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