ProAV1
DI Box
From Radial Engineering:
The ProAV1 is a passive direct box with multiple input connector types and a stereo-to-mono merge function designed specifically for AV integrators to reduce channel requirements.
The ProAV1 provides you with the ability to connect almost any audio source to a PA system, while automatically summing stereo sources to mono to preserve channels and simplify the audio setup. Inputs are available via 1/4", RCA, 3.5mm stereo, and line-level XLR connections, giving you the ability to easily connect to smartphones, tablets, laptops, CD players, or even a +4dB line level output from a console or recording interface. Transformer isolation helps eliminate noise while maintaining a linear frequency response, and a mono balanced XLR output allows you to feed a recording interface or a PA system.
The ProAV1 is perfect for interfacing consumer audio electronics with pro PA and recording equipment. The dual phone, RCA and 3.5mm inputs on the ProAV1 sum the left and right stereo channels to a mono output.
Specs
- Audio circuit type
- Passive, transformer based
- Transformer
- Eclipse ET-DB2, 12:1 ratio
- Number of channels
- Single channel (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
- +18dB @ 20Hz
- Features
- Input pad, Mono Sum, Ground lift
- Input connectors
- 1/4", RCA, 3.5mm TRS, XLR
- Output connectors
- XLR
- Extras
- 1/4" thru, RCA thru
- Construction
- 14 gauge steel chassis & shell
- Size (L x W x D)
- 3.25” x 5” x 1.875”
- Weight
- 0.73kg (1.6 lbs)
- Power
- Passive, no power required
- Conditions
- For use in dry locations only between 5°C and 40°C
Source: Radial ProAV1 specifications page