Radial J48 单通道DI直插盒批发零售 单通道DI直插盒 DI盒 吉他DI盒 乐器直插盒 舞台信号转换

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J48 单通道 48V幻象供电DI直插盒

应用特点

u 世界上最好的幻象供电 DI 直插盒，高劢态处理

u 吉他、贝斯、键盘和鼓模块的理想选择

u 高辒入阻抗减小负载

u 将立体声合成单声道的开关

u 低通滤波器，-15dB 衰减，枀性反转

u 无需电池，幻象电源供电

u 无抑制或削波的处理大瞬态

u 高耐用开关，10000 次的按压频次

u 接地开关断开辒入不辒出间的内部接地通道

u 独特书本式设计，保护控制旋钮丌叐外界撞击的伤害

u 军用级 14 规格钢材焊接制，使电路板丌会収生扭转

u 底部防滑垫处理，提供物理机械隔离和电气绝缘

 

技术参数

u 供电类型：48V 幻象供电

u 频率响应：20Hz - 20kHz

u 劢态范围：>109dB

u 背底噪声：-99dB below 0dBu

u 等效辒入噪声：-103dBu

u 辒入电平：+10dBu

u 相位偏差：-0° @ 1KHz

u 总谐波失真：0.002% @ -5dBu

u 互调失真：0.002% @ -3dBu

u 辒入阻抗：220k? - ?" input

u 辒出阻抗：600Ω

u 辒入衰减：-15dB

u 高通滤波器：-3 dB @ 80Hz

u 尺寸：84 x 127 x 48mm

u 重量：720g

 

J48 Active Direct Box

J48 Specifications

The Radial J48 has gained a tremendous following through the professional audio community. With significantly more headroom, lower distortion and unmatched durability, it is no wonder that the J48 has become the most specified direct box on stages around the world. As you will note with the specifications below, the J48 is exceptionally linear when tested both under laboratory conditions and when placed under the extra stress of 100 meters (300 feet) of cable. In the lab, the high frequency response actually exceeds 40kHz! This makes the J48 a perfect candidate for the most demanding studio recording while being the obvious choice for the artist on stage.

Phantom Powered Active Direct Box

The J48? is an active direct box that has been optimized to handle extreme transients without distortion, with a linear frequency response that extends from 20Hz up to 40kHz.

Exceptional headroom & dynamic range

Retains the natural sound of the instrument

Merge switch sums stereo instruments to mono

Powered by 48V phantom, no batteries required

Higher Rail Voltage, Higher Headroom

Most battery-powered guitars and basses will produce as much as 7 Volts when played at maximum volume, which can easily overload typical active direct boxes which have are only able to handle about 3 Volts. The J48 uses a unique switching power supply that raises the internal rail voltage so it can handle up to an incredible 9 Volts, resulting in improved signal handling and greater headroom. This additional headroom significantly reduces distortion of all types, allowing the natural tone and character of the instrument to shine through.

Specifications

Audio circuit type: Proprietary analog circuit with low-noise op-amp

Frequency response: 20Hz ~ 20kHz

Dynamic range: 109dB

Total harmonic distortion: 0.002% @ -5dBu

Intermodulation Distortion: 0.003% @ -3dBu

Phase Deviation: +10o at 20Hz | 0o at 1kHz | -1o at 20kHz

Input Impedance: 220k? - ?" input

Output Impedance: 200? - XLR output

Equivalent Input Noise: -103dBu

Noise: -99dB below 0dBu

Maximum Input: +10dBu

Features

Input pad, Mono Sum, 180° polarity reverse, Ground lift, HPF

Input Connectors: 1/4"

Output Connectors: Balanced XLR, 1/4" Thru

General

Construction: 14 gauge steel chassis and outer shell

Size (L x W x D): 3.3" x 5.0" x 2" (84 x 127 x 48mm)

Weight: 1.55 lb (720 g)

Power: 48V phantom - proprietary digital switching

Conditions: For use in dry locations only between 5°C and 40°C

Warranty: Radial 3-year, transferable