Description

ProAV1 by Radial Engineering is a versatile, high-performance passive Direct Box with various input connector types to connect even consumer devices: 1/4" RCA, 3.5mm Stereo, and XLR (Line), with a Merge function that sums stereo channels to a single mono output, thereby reducing the need for mixer channels, ideal for audio and video technicians.

Key Features

    
• Versatile passive Direct box ideal for multimedia applications
    
• Ultra-quiet passive Plug & Play circuitry
    
• Isolated transformer to prevent hum and noise
    
• Supports high-level transients without distortion

ProAV1 An indispensable tool

ProAV1 allows you to connect a wide variety of audio sources to a professional PA System, automatically summing stereo sources to mono to optimize the number of channels required and thus simplifying the audio setup itself. The input connections are: 1/4" RCA, 3.5mm Stereo, and XLR line level, with the ability to easily connect: smartphones, tablets, laptops, CD players, or a +4 dB line output from a console or recording interface. Transformer isolation helps eliminate noise while maintaining a linear frequency response, while a balanced mono XLR output allows connection to an audio interface or PA System.

ProAV1 Applications

Connecting a Consumer Audio device to a Professional PA

ProAV1 is ideal for interfacing consumer audio electronic devices with professional PAs and recording equipment. The ProAV1's dual phone, RCA, and 3.5mm inputs sum the left and right stereo channels to a mono output.

Operating as a standard DI Box for instruments

ProAV1 can also be used as a normal Direct Box for passive and active musical instruments such as guitars, basses, and keyboards. You can send the signal to an on-stage amplifier while transformer isolation keeps the connection free of noise.

ProAV1 Technical Specifications      

    
• Audio Circuit Type:         Passive, transformer-based
    
• Transformer: Eclipse ET-DB2, 12:1 ratio
    
• Number of Channels:         Single (Mono)
    
• 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
    
• Common Mode Rejection Ratio:              100dB @ 60Hz
    
• Maximum Input Level:         +18dB @ 20Hz

Specifications

    
• Attenuation Pad, Mono Sum, Ground lift
    
• Input Connectors:  1/4", RCA, 3.5mm TRS, XLR
    
• Output Connectors:       XLR
    
• Extras:  1/4" thru, RCA thru

General Features

    
• Construction:    14 gauge steel chassis and shell
    
• Dimensions (L x W x D): 82.55 x 127 x 45.72 - 3.25” x 5” x 1.875”
    
• Weight:    1.6 lbs - 0.73kg
    
• Power:             Passive, no power required
    
• Operating Conditions:           in dry places only between 5°C and 40°C