JBL V4 是一款经济高效的双通道专业音频功放，专为满足低功率输出需求而设计，为 JBL 娱乐音箱提供性能匹配。
目前仅在中国地区提供。
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特点
- 2U 机架式功率放大器机箱，可直接安装于标准专业音频设备机柜中
- 前面板设计直观，一目了然，简洁实用
- 支持立体声、并联及桥接单声道模式
- 提供三种功率输出方式：2 x 380 W @ 4 Ω、2 x 300 W @ 8 Ω，以及 760 W @ 8 Ω（桥接模式）
- 采用 HARMAN 先进功率放大晶体管，并针对 JBL 娱乐扬声器专门调校，确保呈现高保真音质
- 功率放大器针对 JBL 娱乐扬声器专门调校，使设置与安装更加简便快捷
- Speakon® 音频接口与输出接线柱设计，使连接应用快速便捷
- 配备变速风扇和可拆卸防尘滤网，便于维护保养
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Spec Sheets
| 大小 | |
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1.4 MB |
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1.5 MB |
更新: 4月 2023
更新: 4月 2023
Manuals
| 大小 | |
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23.6 MB |
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零件与服务
性能
| Minimum Guaranteed Power | |
| 4 ohms stereo (per channel) | 380 W |
| 8 ohms stereo (per channel) | 300 W |
| 8 ohms bridge mono | 760 W |
| Frequency Response (1W) | 20 Hz – 20 kHz, +0/-1 dB |
| Frequency Response (1W) notes | Measured in a full space (4π) condition. |
| 总谐波失真 (THD) | < 0.5%, 20 Hz – 20 kHz |
| Transient Intermodulation Distortion (IMD) | < 0.6 % (60 Hz and 7 kHz at 4:1, from full rated output to -30 dB) |
| Conversation Rate | > 10 V/μs |
| 电压增益 | 36 dB |
| Damping Coefficient | > 200
(8 ohms, 10 Hz to 400 Hz) |
| 信噪比 | > 100 dB |
| Signal-to-Noise Ratio notes | Referenced to rated output power, 20 Hz to 20 kHz, A-weighted |
| 串音 | -75 dB @ 1 kHz, -59 dB @20 kHz |
| Crosstalk notes | Referenced to rated output power |
| Input Sensitivity (Rated power @ 8 ohms) | 0.775 V |
| Input Sensitivity notes | According to IEC standard, tested for 2 hours under pink noises with a crest factor of 6 dB. |
| Input Impedance (Rated) | 20k ohms (balanced inputs)
10k ohms (non-balanced inputs) |
| Signal Input/ Output Connector | One balanced XLR input and one XLR LINK output per channel |
| Amplifier Output Connector | One Speakon signal output interface and one set of terminal output interface per channel |
| Front Panel Control | Power switch and channel gain knob |
| Rear Panel Control | Output mode switch: Stereo, Parallel, Bridge-mono |
| Power Indicator | Blue |
| Signal Indicator | Green |
| Clipping Indicator | Yellow |
| Fault Indicator | Red |
| Power Cord Specifications | Plug: 10 A, 250 V
Cable: CCC 3 x 1.0 mm2 x 1.5 m |
| Amplifier Housing | Built-in 2U standard rack |
| 保护 | Protection against short circuit, no load, power on/off noise, radio interference and abnormal temperature |
| Ventilation | Air convection mechanism from front to back |
| 散热 | DC motor fan for heat dissipation and cooling |
| Dimension (W x H x D) | 482 mm x 88 mm x 238.5 mm |
| 净重量 | 8.5 Kg |
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