RDL FP-UBC2 Data Sheet

™

FLAT-PAK

SERIES

Model FP-UBC2
Unbalanced to Balanced
Converter

ANYWHERE YOU NEED...

• Stereo Unbalanced to Balanced
Audio Conversion

• Connectorized Audio Converter

• Low Noise and Distortion

• Cabinet, Shelf or Rack Mounting

• Convenience of RDL FLAT-PAKs

You Need The FP-UBC2!

The FP-UBC2 is part of the group of versatile FLAT-PAK products from Radio Design Labs. The unique
FLAT-PAK case can be directly screwed or bolted to cabinets or shelves. Optionally available rack­mounting accessories permit single or multiple FLAT-PAK module mounting. All FLAT-PAK modules are
supplied with a power interconnect cable for daisy-chaining multiple modules from a single power supply.

APPLICATION: The FP-UBC2 is the ideal choice for connectorized conversion from unbalanced to
balanced audio. This module features two identical channels. Gold-plated phono jacks are utilized for
each unbalanced input channel. Each output is balanced, connected through an XLR jack. A gain trim
potentiometer is provided for each channel.

The normal gain setting is indicated for the trimming potentiometer. This setting produces a +4 dBu
balanced output for a –10 dBV unbalanced input. The gain is adjustable –5 dB to +10 dB from the normal
gain. Therefore, a +4 dBu output signal is possible from input signals ranging from –20 dBV to –5 dBV.

The FP-UBC2 circuitry features low noise, low distortion, excellent headroom and crosstalk performance
and the superior audio clarity for which RDL products are known.

Power may be connected to the FP-UBC2 through either a terminal block or a dc power input jack. The
input voltage to the module is carried through to an output dc jack permitting additional modules to be
powered from the same power supply.

Wherever convenient, economical, high performance, connectorized two-channel audio format conversion
is required, the FP-UBC2 is the ideal choice. Use the FP-UBC2 individually, or combine it with other RDL
RACK-UP

®

, STICK-ON®, TX™, or FLAT-PAK series products as part of a complete audio/video system.

RDL • 659 N. 6th St. • Prescott, AZ., USA 86301 • [phone] • FAX [phone] • www.rdlnet.com

™

FLAT-PAK

SERIES

Model FP-UBC2
Unbalanced to Balanced Converter

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.

OR

24 VDC
POWER

SOURCE

Unbalanced Audio

Source Feeding

FP-UBC2 Input

2A MAX

INPUT

INPUT 1

POWER

24 VDC

1A MAX

INPUT

GAIN

OUTPUT 1

INPUT 2

GAIN

OUTPUT 2

50 mA

FP-UBC2

CURRENT

OUTPUT

PWR BUS

Balanced Audio Outputs
Feeding Other Balanced

Audio Equipment

Gain ShownSet
for +4 dBu Output
From A -10 dBV
Input

Power to Additional

Flat-Pak Modules, Total

Current Not to Exceed 2 A

or Available Supply Current

TYPICAL PERFORMANCE

Amps per FP-UBC2: 2 identical circuits (stereo or dual mono operation)
Gain: -5 dB to +10 dB adjustable (relative to +4 dBu output for –10 dBV input);
(separate controls for each channel)
Input level: -20 dBV to -5 dBV (for +4 dBu output)
Input impedance: 10 kΩ
Input configuration: Unbalanced
Output impedance: 150 Ω balanced, drives 600 Ω or 10 kΩ lines
Output configuration: Balanced or unbalanced
Frequency Response: 20 Hz to 40 kHz (+/- 0.25 dB)
THD+N: < 0.05%; typ. 0.01% (1 kHz)
IMD: < 0.02%
Output Level: +4 dBu
Headroom: > 18 dB (at rated output level of +4 dBu)
Noise: < -85 dB referred to +4 dBu (20 Hz to 20 kHz)
Crosstalk: Better than -70 dB (20 Hz to 20 kHz); typ <-80 dB (1 kHz)
Power Requirement: 24 Vdc @ 50 mA, Ground-referenced

Overall Dimensions: Height: 1.29 in. 3.28 cm
Width: 3.25 in. 8.26 cm
Length: 4.07 in. 10.34 cm

Radio Design Labs Technical Support Centers

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

891-2025F

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