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ProD8 8 通道机架式键盘 DI 直插盒

应用特点

u 8 通道机架式 DI 直插盒

u 可提供 8 个键盘同时辒入

u 能够承载难以想象的大劢态信号而丌失真

u 备份辒入选项让您轻松实现系统冗余

u 可发的安装耳朵能够保证轻松配置接口

u 8 个定制缠绕的 Radial 发压器

u 每个封装内镍金属罐可减少外磁场引起的噪声和失真

u 辒入面板上有-15dB 的衰减

u XLR 辒出配备了枀性反转开关

u 每个通道配有接地开关和底座接地开关

u 双辒入可以将立体声信号合成单声道信号

u 1U19 吋标准机架安装

u 军用级 14 规格钢材焊接制，使电路板丌会収生扭转

 

 

 

技术参数

u 频率响应：20Hz - 20kHz (± 0.2dB)

u 增益：-20Db 信噪比：>94dBu

u 劢态范围：>135Db

u 辒入电平：+21dBu

u 总谐波失真：0.05% 20Hz - 20kHz @-10Db

u 相位偏差：0.3° @ 100Hz; 3° @ 20Hz

u 辒入衰减：-15dB

u 等效辒入噪声：-95dBu

u 辒出阻抗：140KΩ

u 辒出阻抗：150Ω

u 尺寸：483 x 45 x 159mm

u 重量：3.26Kg

 

Passive 8-Channel Rackmount Direct Box

The ProD8 is a high performance 8-channel passive direct box optimized for keyboard rigs in professional touring, with redundant 1/4″ inputs for each channel and a completely passive design that requires no power to operate.

High density 8-channel rackmount DI for keyboards

Reversible rack ears to optimize patching setup

Withstands extreme dynamics from high-output sources

Redundant inputs let you incorporate a backup system

Professional performance

ProD8 Specifications

The Radial ProD8 is an 8 channel 19″ rack-mountable direct box designed for professional concert touring. The feature set has been optimized for keyboards but as with any direct box, it is certainly suitable for use with instruments or playback systems. The passive signal path incorporates a custom wound Eclipse ET-DB2 transformer and RF filtering that is able to withstand excessive signal levels without distortion while delivering a linear response across the audio spectrum.

The ProD8 features up to 8 direct box outputs in a single 1RU rack space for professional touring, with dual ?" inputs on each channel to incorporate a backup system or connect up to 16 channels of audio at once. A ?" TRS effects insert jack on each channel allows for connection to various effects devices while adding greater routing options, while a thru-put jack delivers a direct feed to the artist's playback system. The front panel features isolated XLRs for balanced low-noise outputs, each equipped with ground lift and 180° polarity reverse switches.

Transformer driven for greater headroom & low noise

The engine inside the ProD8 is a custom wound Eclipse ET-DB2 transformer that performs both the impedance matching and balancing. Linear from 20Hz to 20kHz, it is able to withstand the extreme dynamics common with today's digital keyboards. Unlike active circuits that overload and square wave when the rail voltage is exceeded, transformers saturate. This means that as the signal increases, the ProD8 naturally rounds out the tone producing a warm Bessel curve reminiscent of the very best vintage audio gear. The other significant advantage to this passive design is 100% galvanic isolation between the source and destination, which eliminates hum and buzz caused by ground loops.

Adaptable Configuration

To enhance setup options, the Radial ProD8 is equipped with reversible rack ears. This handy feature allows the system tech to position the inputs on the front of the rack when interfacing with external keyboards or have them inside if the setup is predominantly equipped with rack modules.

Specifications

Audio circuit type: Passive, transformer based

Transformer: Eclipse ET-DB2, 12:1 ratio

Number of channels: 8

Frequency response: 20Hz ~ 18.5KHz (± 0.2dB)

Dynamic range: 128dB

Total harmonic distortion: 0.01% from 20Hz~20kHz @-10dB

Phase Deviation: 1° @ 100Hz; 8° @ 20Hz

Input Impedance: 140k Ohms, unbalanced

Output Impedance: 150 Ohms, balanced

Maximum Input: +18dB @ 20Hz

Features

Input pad, 180° polarity reverse, Ground lift

Input Connectors: 1/4"

Output Connectors: XLR

General

Construction: 14 gauge steel chassis & outer shell

Size (L x W x D): 19" x 6.25" x 1.75" (1207.5px x 396.875px x 111.25px)

Weight: 7.2lb (3.26 kg)

Shipping size (L x W x D): 22" x 10.375" x 4.5" (1397.5px x 660px x 285px)

Shipping weight: 8.30lb (3.76 kg)

Power: Passive, no power required

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

Warranty: Radial 3-year, transferable