Henry Engineering USDA-2X4 User Manual

U.S.D.A.

UTILITY SUMMING & DISTRIBUTION AMPLIFIER

Product Description

U.S.D.A. (Utility Summing & Distribution
Amplifier) is a unique 2x4 mini-DA that can be
used to combine or split audio signals for
distribution. It can be used as a 1x4 or 2x4 DA
in stereo or mono. There are 2 inputs (1 stereo
pair) and 4 outputs (2 stereo pairs). Each stereo
output pair can be independently switched to
mono without affecting the other output.

USDA can produce both stereo and mono
outputs simultaneously from a stereo source.
Inputs and outputs can be operated either
balanced or unbalanced. The audio level of
each output can be adjusted over a 26db range.
All circuitry is transformerless and direct-coupled
for sonic accuracy. Connections are via barrier
strip to assure long-term reliability.

HENRY ENGINEERING

503 Key Vista Drive

Sierra Madre, CA 91024 USA

FAX [phone]
TEL [phone]

REV A 1993

Typical Application

Input Level
Input Impedance
Output Level
Output Load
Controls
Gain
Frequency Response
Distortion
Noise
Power Requirements
Construction
Physical

-20 to +8 dBm nominal

20K ohms bal, 10K ohms unbal

0 to +8 dBm nominal, +24 dBm max

600 ohms or higher per output, bal

Output Level for each channel

-6 to +20 dB

DC to 20kHz, ±0.25 dB

<.01% IM/THD

>80 dB below nominal output, typ

115/230VAC, 50/60Hz, 3 W

Aluminum enclosure and front panel

6.25"w x 3.75"h x 2.25"d, 2 lbs

Technical Specifications

Technical specifications subject to change without notice.

ENGINEERING

HENRY

TM

OUT 1

OUT 2

L
R

L
R

U.S.D.A.

L IN

R IN

STEREO
SOURCE