JBL MPX300
¥ 180,000 (around 1994)
¥ 150,000 (around 1997)
Commentary
A power amplifier developed to bring out the performance of JBL's SR-speaker system.
Equipped with automatic recovery protection circuit and multi-speed forced cooling fan.
The input terminal uses a combination type connector that can be used for both XLR and 6.3 mm standard plugs.
It also comes with a Euro-style barrier strap that allows cables to be inserted and removed together with terminals for installation and maintenance.
A built-in high-pass filter protects the low-frequency unit by cutting low frequency signals of 30 Hz or less.
Equipped with a mode switch, it can be used as a bridge drive in addition to stereo / parallel ones.
Model Rating
| Type | Stereo power amplifier | ||
| Effective power (20 Hz to 20 kHz, 0.1% THD) |
300W + 300W (4 Ω) 200W + 200W (8 Ω) 600W (8 Ω, bridge connection) |
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| Maximum Output (1 kHz, 1% THD) | 360W + 360W (4 Ω) | ||
| Distortion factor (at rated output) |
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| Frequency characteristic | 20 Hz to 20 kHz ± 0.15 dB | ||
| Damping factor | 200 or More (8 Ω) | ||
| Dynamic margin | 2.5 dB (4 Ω) | ||
| NOISE | -100dB or less (20 Hz to 20 kHz, at rated output) | ||
| Input sensitivity | 1 Vrms (8 Ω at effective output) | ||
| Input impedance | Unbalanced : 10k Ω Balance : 20k Ω |
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| Controls |
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| Indecator (each channel independent) | Power (green LED) Signal (green LED) Clip (Red LED) Protect (Red LED) |
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| Input connector | Barrier Strap, XLR (pin 2 - hot) 6.3 mm standard combination connector |
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| Output connector | 5-way binding post | ||
| Cooling system | Two speed variable type fan | ||
| Protection circuit | Short circuit / open circuit protection Ultrasonic RF protection current limiter Thermal muting Load mismatch |
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| Pwer | 100 VAC, 50Hz/60Hz | ||
| External dimensions | Width 483x Height 133 (3U) x Depth 408 mm Depth from rack mounting surface to rear projection : 404 mm * 19-inch rack mount size |
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| Weight | 18.7kg |