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Installation and Technical Application Guide

igital multimedia mixer for Audio, Video and Wireless applications

SonicDevices n 9950 Baldwin Place, El Monte CA 91731 n (T) 626-454-8169 n (F) 626-433-1079 n (W) www.sonicdevices.net

4.4 HNB-A Master Override Input Connection, Adjustment and Operation

AUDIO

LEVEL

DELAY

VOLT

SENS

1V-70V

HNB-A FRONT

Terminate MAIN AUDIO SYSTEM to ‘MO IN’ 2-pin connector (1V - 70V) on rear panel.

When 'MO IN' is terminated all audio sources to INPUTS 1-4 will instantly shut down (-50dB).

Adjust the voltage sensitivity ‘VOLT SENS’ Pot CLOCKWISE until the AMBER LED lights on the front panel.

Proceed to adjust AUDIO LEVEL and DELAY Pots as needed to match PA and intercom performance needs.

IMPORTANT NOTE: The PAGE SOURCE must be ACTIVE during set up.

MAIN AUDIO SYSTEM INCOMING PAGE

IMPORTANT NOTE

The page source must be ‘active’

during calibration of ‘MO’ circuit.

(LINE LEVEL 1V - 25V - 70V)

Terminate MAIN AUDIO SYSTEM

to ‘MO IN’ connector (1V - 70V).

EXISTING PA / INTERCOM

SPEAKERS IN ROOM

HNB-A CONNECTED

SPEAKERS

(ONE WAY only) enhance

and extend the usefulness

of existing PA/Intercom

speakers during critical

emergency communications

(’MO operation).

NOTE: Voice intercom / TWO WAY

talkback will function in normal mode

during ‘MO’ operation.

When override page or signal is

complete and disconnect is made (no

voltage or signal present) the original

audio source will return within (5)

seconds.

Adjust the voltage sensitivity

‘VOLT SENS’ Pot CLOCKWISE

until the AMBER LED lights on

the front.

OTE: WHEN VOLTAGE

SETTING IS CORRECT,

AMBER LED WILL LIGHT.

EAO-1

LISTED

Audio/Video Apparatus

SM5

MFG.DATE:03-16-2010

‘MO’ Master Override initiates an automatic ‘MUTE’ at 10ms

attack and release at 3-5 seconds of ALL

HNB audio sources.

Note: When ‘MO’ is activated and ‘Voltage Present’ is detected

on the ‘MO’ ‘J6’ input (see section 3.9), all audio sources to HB-

2PA preamp are immediately ‘MUTED’ to the amp and speakers.

Only the ‘MO’ audio signal routes to the amp and is broadcast to

speakers during ‘MO’ activation. The ‘MO’ input audio level IS

ADJUSTABLE and can be different than the original source

material.

HNB-70V2X has high performance 30W matching impedance transformers capable of driving 25V or 70V speakers.

eady-to-install assembly is housed in a metal UL-CUL approved electrical junction box with ¾” – 1” electrical knock-

outs on all (4) sides with grounding screw, top cover plate with corrosion resistant powder coat grey paint and comes

with electrical wire nuts for 16-18 AWG stranded cable connections. The HNB-70V2X two-channel transformer is

ordered separately. See detailed information in Section 5.2

4.3 Optional Impedance Matching Transformer - for use with 25V-70V speakers

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