Henry Engineering Patchbox User Manual

Product Description

TM

PatchBox

STEREO OUTPUT MULTIPLIER

PatchBox is a passive “output multiplier” that can be used to
distribute the output of a professional audio mixer to the
inputs of peripheral equipment. PatchBox is ideal for feeding
a mixer’s output signal into DAT recorders, digital editors,
computer sound cards, cassette and reel decks, VCRs, PA
systems, dubbing racks, limiters, and other audio equipment.
Both professional equipment with balanced inputs and
consumer equipment with unbalanced inputs can be used.

PatchBox is compatible with any active balanced
(transformerless) low impedance signal source that is ground­referenced. (Most professional mixers built since the early
1980s use this topology.)

From a stereo source, PatchBox creates eleven stereo
outputs: five balanced stereo outputs and six unbalanced
stereo outputs.

PatchBox balanced outputs, on XLR and ¼” TRS connectors,
provide a “unity gain” signal with a 600 ohm source impedance.
PatchBox unbalanced outputs, on gold-plated RCA connectors,
provide a signal that is compatible with the inputs of consumer
gear. Because the inputs circuits of audio equipment are
normally high-impedance (“bridging”), any combination of
outputs can be used simultaneously without interaction or signal
degradation.

HENRY

ENGINEERING

INPUT 1

PatchBox

DAT

CD-Recorder

Technical Specifications

Inputs:

Balanced Outputs:

Unbalanced Outputs:

Technical specifications subject to change without notice.

Left/Right on ¼” TRS connectors
Balanced, low impedance, gnd ref
Any professional level, +4dBu typ.
Level: Unity Gain
Load: 3K ohms or higher
2 Stereo pairs / XLR connectors
3 Stereo pairs / ¼” TRS connectors
Level: 10dB below input level
Load: 10K ohms or higher
6 Stereo pairs on RCA connectors

PC Sound

Cassette Deck

Reel-Reel Deck

VCR

PA System Amp

Frequency Response
Distortion
Noise
Power Requirements
Construction
Physical

Limiter

DA

DC to 50kHz
None
None
None
Aluminum enclosure and front panel

7.0”w x 5.5”h x 2.5”d 2 lbs

HENRY ENGINEERING

503 Key Vista Drive

Sierra Madre, CA 91024 USA

TEL [phone]

FAX [phone]

REV A 2001