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VOCO-LOCO 人声和乐器效果切换放大控制器DI直插盒

应用特点

u 录音室级别的话筒前置放大器

u 为踏板提供效果发送与返回通路

u 干湿混合旋钮用于混合效果信号

u 多个效果器可以使用一个脚踏开关

u 可加载动圈或电容话筒

u 通过隔离变压器优化信号通路，减少噪音和失真

u 对萨克斯、小号和长号来说是很棒的配备

u 在人声和口琴信号方面有极好的表现

u 军用级 14 规格钢材焊接制，使电路板不会发生扭转

u 底部防滑垫处理，提供物理机械隔离和电气绝缘

技术指标

u 设备类型：FET 类缓冲与集成的集成电路运算放大器

u 频率响应：20Hz-30KHz

u 总谐波失真：<0.05%@1kHz

u 动态范围：100dB

u 输入阻抗：10kΩ

u 最大输入：>+10dBu

u 输入增益：52dB

u 输出阻抗：300Ω

u 输出电平：+15dBu

u 等效输入噪声：-120dBu

u 本底噪声：-88dBu

u 互调失真：0.004%

u 相位偏差：8°@50Hz

u 共模抑制：-73dB@55Hz

Voco-Loco Effects Switcher for Voice or Instrument

Mic Preamp and Effect Loop

The Voco-Loco is a foot-controlled microphone preamp and effects loop switcher that enables a vocalist or acoustic instrumentalist to incorporate guitar effects pedals into their signal path.

Add guitar effects pedals to vocal or instrument mics

Create exciting and unique effects as you perform

Turn on multiple effects with one footswitch

Works with dynamic and condenser microphones

Connect any mic to your guitar pedals

The Voco-Loco combines a microphone preamp with a guitar pedal effects loop, allowing a lead vocalist, sax or trumpet player to add guitar pedals to their audio signal path just like an electric guitarist adds effects for soloing. Simply plug your mic into the Voco-Loco via the XLR input, connect your effects pedals using standard ?" guitar cables, and then send the output from the Voco-Loco to the input on your mixer. Now with the touch of a footswitch you can add your favorite delay, reverb, distortion or wah-wah to any mic'd up instrument or vocal - the options are only limited by your imagination.

Voco-Loco Specifications

The Radial Voco-Loco is in fact a studio quality preamp that has been carefully disguised as a foot pedal! One look at the linear frequency response, exceptional signal handling and low noise and you will recognize the studio quality that is built-in. This ensures that the dry microphone signal will be delivered to the PA system without distortion or artefact and faithfully reproduce the instrument or vocal without compromise. A carefully crafted 2-band EQ makes adjusting the tone effortless. Turning on the effects loop adds transformer isolation to reduce hum and buzz caused by ground loops, a common problem that plagues many pedal setups. Once the loop is brought back, a tone control lets you tame the effects signal and a dry-wet mix control lets you balance the signal to suit.

*48 Volt Phantom Power

Although 48 volts is often specified, truth is, it is not always present or needed. In fact most condenser microphones are designed to work from 12 volts to 52 volts, many of which will also work on a simple 1.5 volt battery. The reason high voltage is used to charge condenser mics in PA systems is that in enables the condenser microphone to be positioned 200 meters (600 feet) away from the mixing console. Considering the Voco-Loco will likely be used near the musician with a 3 or 6 meter (10′ or 20′) mic cable, the high voltage is simply not needed. The Voco-Loco actually generates 40 volts phantom, not 48 volts. We chose to do this in order to reduce a power stage which could add noise. We have tested a wide range of popular stage and studio microphones and in all cases, the results were excellent.

Specifications

Block Diagram

Graphs

Specifications

Audio circuit type: Integrated Op-Amp with Class A FET input circuit

Frequency response: 20Hz ~ 20kHz

Dynamic range: 100dB

Gain: 52dB

Clip Level: +15dBu

Total harmonic distortion: <0.005%

Intermodulation Distortion: <0.005%

Phase Deviation: 8° @50Hz

Input Impedance: 10K-Ohms, 100K (FX Loop)

Output Impedance: 300 Ohms, 3000 Ohms (FX Loop)

Common Mode Rejection Ratio: -73dB @55Hz

Equivalent Input Noise: -120dBu

Noise: -85dBu

Maximum Input: +10dB

Features

Input pad, 180° polarity reverse, Ground lift, Effects Loop

Input Connectors: XLR-F

Output Connectors: XLR-M

General

Construction: 14 gauge steel chassis and outer shell

Power: 100mA, center positive

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

Warranty: Radial 3-year, transferable