Henry Engineering TwinMatch Handleiding

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HENRY ENGINEERING

503 Key Vista Drive

Sierra Madre, CA 91024

Tel: 626.355.3656

Fax: 626.355.0077

www.henr

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en

g

.com

TWINMATCH

TM

IHF>PRO DUAL STEREO INTERFACE

DESCRIPTION

TWINMATCH is a level and impedance converter designed to interface consumer or "semi-professional"

equipment to professional studio gear. TwinMatch converts the outputs of unbalanced “IHF” (-10 dBv)

equipment to balanced Lo-Z lines at +4 dBm. Four channels of interface permit operation with a pair of

stereo audio sources, eg, two stereo CD players or R-DAT decks. All circuitry is active and direct coupled

for exceptional sonic accuracy.

INSTALLATION

Connect the unbalanced source(s) to the TwinMatch inputs via the RCA jacks on the rear panel. There

are two stereo inputs, labeled "1" and "2". Each stereo input has a Left and Right input jack.

The TwinMatch balanced outputs are via the male XLR connectors on the rear panel. The mating XLR

connectors should be wired as follows:

Pin 1 = Ground

Pin 2 = Signal HI

Pin 3 = Signal LO

Note: To drive an unbalanced load, connect to pins 1 and 2 ONLY. Do NOT short pin 3 to ground!

The TwinMatch will drive any load of 600 ohms or higher. It is not necessary to terminate the outputs.

ADJUSTMENT

Each channel of the TwinMatch has a gain adjustment. It is set at the factory for a gain of 14 db, so that

a –10 dBv input will produce an output of +4 dBm. The gains may be changed via the trimpots on the

front panel. The gain range is from +6 to +20 dB.

SPECIFICATIONS

INPUT LEVEL -10 dBv nominal

INPUT IMPED 25k ohms, unbalanced

GAIN +6 to +20 dB

OUTPUT LEVEL +4 dBm nominal, +26 dBm max

OUTPUT LOAD 600 ohms or higher per channel

FREQ RESPONSE DC to 20 kHz, +/- 0.25 dB

NOISE LEVEL 85 dB below +4 dBm output

DISTORTION .008% IM/THD

Specification subject to change without notice. Rev. 9/03

Product specificaties