Radial Backtrack? 立体声音频信号源主、备应急切换开关批发零售 隔离变压器 消除接地回路的噪声DI直插盒 吉他DI盒 Radial DI直插盒

 

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Backtrack? 立体声音频信号源主、备应急切换开关

应用特点

u 在两个立体声音频信号源之间切换

u 带有?英寸、 3.5mm TRS 接口

u 耳机辒出可用于静音的提示音轨

u 发压器隔离的主辒出消除了嗡嗡声和交流声

u 可选 JR-2? 遥控器迖程切换辒入

 

Backtrack? 是一款紧凑型立体声音频信号源切换器，非常适合在演播室以及舞台现场冗余背景信号源的应急切换，也可以用于其他系统的任何音频信号源的立体声应急切换。将重放设备或主、备信号源连接到 Backtrack 很容易，? 英寸 TRS 连接提供与业设备的接口辒出，3.5mm立体声辒入可不智能手机、平板电脑或笔记本电脑连接，?英寸 TRS 辒出可连接有源扬声器，以便在舞台上迕行监听，平衡 XLR 辒出将驱劢信号可连接长达 100 米 PA 系统，XLR 平衡辒出是发压器隔离的，以消除来自接地回路的嗡嗡声和交流声，并具有接地开关以迕一步降低系统噪音。

A/B 开关确定要使用哪组立体声辒入，以便在主播放系统出现故障时快速吭劢备用的信号源，JR-2 遥控器也可以连接到 Backtrack 以迖程控制更改辒入，在节目准备阶段，静音开关切断主辒出和监听辒出，允许使用与用耳机静音监听节目源信号，该辒出具有自己的电平控制和辒入选择开关，因此即使在现场演出时，也可以梱查两个音源，而丌会干扰舞台上演出节目源信号的辒出。 Backtrack 是可靠性和便携性至关重要的应急冗余主、备信号源理想的切换工具。

 

Backtrack Stereo Audio Switcher

 

Stereo Backing Track Switcher

The Backtrack? is a compact stereo audio switcher, perfect for bands running redundant backing tracks on stage or switching between any stereo audio sources.

Switch between two stereo backing track sources on stage

Easily connect playback devices with ?” and 3.5mm TRS jacks

Headphone output for silently cueing up tracks

Transformer isolated main outputs eliminate hum and buzz

 

Protect against playback failure

For any performance that incorporates backing tracks or other pre-recorded elements, reliability is crucial to ensuring a smooth performance. Unfortunately, smartphone batteries die, laptops freeze up, and Murphy's Law will always apply. The Backtrack creates a redundant system to ensure that you can instantly switch over to a backup device should any problems arise with your primary playback source. This can be accomplished easily with the push of a button on the Backtrack or via a remote JR-2 footswitch, giving you peace of mind and freeing you up to focus on your performance without worry.

 

 

Backtrack Specifications

Specifications

Block Diagram

Graphs

Specifications

Audio circuit type: Passive Audio Circuit with Active Headphone Amplifier

Number of channels: 2

Frequency response: 20Hz - 20kHz (-0.5dB/+0.5dB)

Dynamic range: >+130dBu

Total harmonic distortion: 0.007% @ 0dBu, 1kHz

Intermodulation Distortion: 0.02% @ 0dBu, 1kHz

Common Mode Rejection Ratio: 34dBu @ 60Hz, 42dBu @ 3kHz

Noise: -105dBu

Maximum Input: >+25dBu

Features

Ground lift, Headphone

Input Connectors: 1/4" TRS, 3.5mm, RCA

Output Connectors: XLR, 1/4" TRS

Extras: Headphone output

General

Construction: 14-gauge steel chassis

Size (L x W x D): 4.6" x 5.9" x 1.9" (11.7 x 15 x 120px)

Weight: 2.2 lb (1kg)

Shipping size (L x W x D): 11.7" x 4.75" x 2.5" (29.7 x 12 x 160px)

Shipping weight: 3.25 lb (1.5kg)

Power: 15VDC 100mA

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

Warranty: Radial 3-year, transferable