RDL TX-J2 Datasheet

TX™ SERIES

Model TX-J2
Unbalanced Input Transformer

ANYWHERE YOU NEED...

• To Mix Two Unbalanced Audio Signals to Mono Balanced

• To Combine Stereo Into Mono with Balanced Output

• Unbalanced to Balanced Conversion Without Gain

• Transformer Isolation for Unbalanced Line Inputs

• Hum Cancellation on Unbalanced Line Inputs

• Passive Converter with Input Jacks

You Need The TX-J2!

The TX-J2 is part of the group of versatile TX series products from Radio Design Labs. The TX series feature the
advanced circuitry for which RDL products are known, combined with durable, quality connectors. The ultra-compact
TX series can be mounted in limited space using the adhesive methods popularized by RDL’s STICK-ON
The TX-J2 may be mounted directly to a backboard or chassis using a variety of mounting options available from
Radio Design Labs.

APPLICATION: The TX-J2 is the ideal choice in installations requiring the passive mixing of two unbalanced
line-level audio sources to feed a balanced (or unbalanced) audio output.

The TX-J2 is a complete unbalanced line-level audio input module. The front panel features two gold plated phono
jacks, intended for mono or stereo consumer level sources. Inputs 1 and 2 are combined and balanced through
audio transformers configured to reject induced hum. The line-level output is provided on the front-panel barrier
block for connection to 10 kOhm or higher input impedance line-level module or equipment inputs.

Note: The TX-J2 is a passive module that does not add gain to the consumer level input. Therefore the balanced
output level from the module is not a standard +4 dBu. For installations where a +4 dBu balanced line-level is
required, or if the input level is particularly low, RDL’s TX-LC2 is recommended.

Wherever consumer format audio signals need to be converted to a balanced line without gain, the TX-J2 is the ideal
choice. Use it individually or in conjunction with other RDL products as part of a complete audio/video system.

®

Series.

RDL • P.O. Box 1286 • Carpinteria, CA., USA 93014 • [phone] • FAX [phone] • http://www.rdlnet.com

TX™ SERIES

Model TX-J2
Unbalanced Input Transformer

SIGNAL

FROM

UNBALANCED

LINE-LEVEL

SOURCE

12

INPUTS

10 k

MONO OR STEREO INPUT

MONO OUTPUT

Installation/Operation

EN55103-1 E1-E5; EN55103-2 E1-E4

Typical Performance reflects product at publication time
exclusive of EMC data, if any, supplied with product.
Specifications are subject to change without notice.

OUTPUT

+

OPTIONAL CONNECTION

SIGNAL

FEEDING

BALANCED
LINE-LEVEL
EQUIPMENT

TYPICAL PERFORMANCE

Input connectors (2): Phono jacks with gold contacts
Output connector: Full-size barrier block
Output connections: +, -, Ground
Frequency response (line level): 30 Hz to 20 kHz (±1 dB)

Dimensions: Height: 1.4 in. 3.6 cm
Length: 3.0 in. 7.6 cm

Width: 1.2 in. 3.0 cm

891-7045

Radio Design Labs Technical Support Centers

U.S.A. [phone], [phone]; Fax: [phone]

Europe [NH Amsterdam] (++31) 20-6238 983; Fax: (++31) 20-6225-287