The RDL TX-J2 is a compact passive audio interface designed to combine two unbalanced line-level audio sources into a single mono output. Using high-quality audio transformers, the TX-J2 can provide stereo-to-mono mixing and unbalanced-to-balanced signal conversion while helping eliminate hum and unwanted noise in professional audio systems.
Part of the RDL TX Series, the TX-J2 is an excellent choice when two RCA audio sources need to be combined and connected to a balanced input on a mixer, amplifier, DSP, or other professional audio device. Because the TX-J2 operates passively, it requires no external power, making it a simple and dependable solution for permanent installations and retrofit projects.
Flexible Two-Source Audio Mixing
The RDL TX-J2 provides two gold-plated RCA inputs that accept unbalanced line-level audio. The two inputs can be used to combine the left and right channels of a stereo source into a mono signal, or to mix two independent audio sources into one output.
Its transformer-isolated design also helps prevent ground-loop problems when connecting consumer-style RCA equipment to professional balanced audio systems.
The resulting mono signal can be connected as either a balanced or unbalanced output through the detachable terminal block, providing installation flexibility with a wide range of audio equipment.
Transformer Isolation for Cleaner Audio
One of the major advantages of the RDL TX-J2 audio interface is its transformer isolation. The internal transformers provide excellent rejection of common-mode interference and help reduce hum that can occur when audio equipment with different grounding arrangements is interconnected.
This makes the TX-J2 particularly useful when integrating RCA line-level sources with professional balanced audio equipment.
Passive Design Requires No Power
Unlike active audio interfaces and electronic mixers, the TX-J2 does not require AC or DC power. Its passive circuit design makes installation straightforward and eliminates another power requirement from the audio system.
The compact enclosure can be installed in equipment racks, behind equipment, on backboards, or in other locations where space is limited. RDL mounting options also allow the module to be secured to a variety of surfaces.
RDL TX-J2 Key Features
-
Passive two-input audio mixer for combining two unbalanced line-level sources
-
Stereo-to-mono conversion for combining left and right audio channels
-
Unbalanced-to-balanced audio conversion for connecting RCA sources to professional equipment
-
Transformer isolation helps reduce hum, noise, and ground-loop interference
-
Two gold-plated RCA input connectors
-
Balanced or unbalanced mono output
-
Detachable terminal block for convenient installation wiring
-
No external power required
-
Wide 30 Hz to 20 kHz frequency response
-
Compact design for space-conscious AV installations
-
Part of the RDL TX Series of professional audio interface modules
Applications for the RDL TX-J2
The TX-J2 can be used wherever two unbalanced audio sources need to be combined or connected to balanced professional audio equipment. Common applications include:
-
Commercial audio installations
-
Professional AV systems
-
Background music systems
-
Classroom and education audio
-
Conference rooms
-
Churches and houses of worship
-
Audio mixers and amplifiers
-
DSP and signal-processing systems
-
Studio and recording installations
-
Stereo-to-mono audio distribution
-
RCA-to-balanced audio connections
-
Ground-loop and hum reduction applications
RDL TX-J2 Technical Specifications
|
Specification
|
Details
|
|
Product Type
|
Passive audio input module / audio mixer
|
|
Inputs
|
2 unbalanced line-level inputs
|
|
Input Connectors
|
RCA
|
|
Output
|
1 mono balanced or unbalanced output
|
|
Output Connector
|
Detachable terminal block
|
|
Conversion
|
Unbalanced to balanced
|
|
Audio Mixing
|
Two inputs to one mono output
|
|
Isolation
|
Transformer isolated
|
|
Frequency Response
|
30 Hz – 20 kHz
|
|
Power Requirement
|
None; passive operation
|
Compact Audio Interface for Professional Installations
The RDL TX-J2 passive audio mixer provides a straightforward way to combine two RCA audio sources and interface them with professional balanced audio equipment. Its transformer isolation, passive operation, compact size, and flexible input/output configuration make it a practical choice for commercial AV and professional audio installations.
For systems requiring reliable stereo-to-mono mixing, RCA-to-balanced conversion, or transformer-isolated audio interfacing, the RDL TX-J2 offers a simple installation-friendly solution without requiring an additional power supply.
