Feature List; Control Elements; The Front Panel; Input Section - Alto VOICE plus User Manual

1. INTRODUCTION
Thank you very much for expressing your confidence in
lifier/Voice Processor.
With the VOICE plus you have acquired an extremely useful Mic Preamplifier/Voice Processor which is based on many
years of experience and findings in amplifier and processor technology and is used throughout the world in renowned
studios, sound reinforcement systems as well as in broadcast and television studios. The VOICE plus meets highest
and non-compromise requirements in terms of operation, sound, specifications and workmanship.
The functional elements in the VOICE plus provides you a more natural and musical sound: eliminating interference
signals, smoothing out the overall signal dynamics, compensating deficiencies in the sound image and removing
unwanted frequencies etc.. The switchable +48V Phantom Power supply allows you to operate your condenser mic-
rophone more conveniently.

2. FEATURE LIST

Mountable in one standard 19" rack unit
Providing +48V phantom power for MIC input stage
Expander/Gate is available for reducing noise smoothly
Smart compressor for precision, limiting signal peaks and dynamic processing
Voice optimized EQ is responsible for voice reinforcement
De-esser for eliminating the hiss and unnecessary vocal
High quality parts and rigid configuration for long life and full credibility
Manufactured under QS9000, VDA6.1 certified management system

3. CONTROL ELEMENTS

3.1 The Front Panel

INPUT LEVEL(dB)
12 0 12 CLIP
PHANTOM
16 0
R
LTO
20
10 60
12 12
LINE dB
GAIN
INPUT
Your VOICE plus provides with convenient operation interface and excellent performance. You can easily find the
five sections from the interface: Input section, Expander/Gate & Compressor section, Voice Optimized EQ section,
De-esser section and Master Vol. section. For further details, please refer to the following description:
1. POWER Switch
Turn the apparatus ON or OFF.

3.1.1 INPUT Section

GAIN REDUCTION(dB)
30 27 21 18 15
LOW CUT
120 35 2.5 10 4
65
270 60 0 7 10 2
1.5 30
15 360 OFF 15 1.2 8 40 20 1
SMART
Hz PHASE dBu 1:N dBu N:1
FREQUENCY
THRESHOLD RATIO THRESHOLD RATIO
EXPANDER / GATE
LTO
LTO products by purchasing our VOICE plus Mic Preamp-
OUTPUT LEVEL(dB)
9 4 2 24 18 12 6 0 6 12 18
0 0
30 0.5
15 70 0.3 1.5 2 2 3
10 110 3 10 4
6 0.1 10 4 6
1 150 0.05 5 20 20 8 8 12
BYPASS dB
dB/mSec dB/Sec dB
ACTIVE
ATTACK RELEASE OUTPUT GAIN BREATH PRESENCE
COMPRESSOR
5
2
INPUT LEVEL(dB)
12 0 12 CLIP
PHANTOM
16 0
65
R
20
10 60 15
12 12
LINE
dB
FREQUENCY
GAIN
INPUT
3 4
4
ACTIVE
ABSENCE
10
0 0 330 6K2
2 3 2 220 460 4K6 8K6 12 5
5 5 600 10K 0
6 3K1 15
8 12 8 130 720 2K7 12K 20 5
dB dB Hz BYPASS Hz dB
ACTIVE
WARMTH TUNING CUT FREQUENCY
VOICE OPTIMIZED EQ DE-ESSER
8
LOW CUT
120
270
360
Hz PHASE
6 7
OUTPUT LEVEL(dB)
12 6 0 6 12 CLIP
0
VOICE plus
2 2
MIC PREAMPLIFIER/
10 8
ON VOICE PROCESSOR
10 OFF
BYPASS dB
ACTIVE
MASTER VOL.
POWER
1