Alto HPA4 Panduan Pengguna - Halaman 5

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Halaman Cetak
Alto HPA4 Panduan Pengguna

1. INTRODUCTION

Thank you very much for expressing your confidence in
phone Amplifier. With the HPA4 you have acquired an extremely musical and flexible 4-Channel Headphone Amplifier.
Featuring four stereo headphone amplifiers, the
necessary tasks, not all of which are headphone related.
The HPA4 4-Channel Headphone Amplifier provides Main Inputs on the rear panel and Direct In Input on the front
panel to drive any or all of the 4 stereo headphone amplifiers, when using the Direct In Input, the Main Inputs signal
will be interrupted automatically, the Main Outputs on the rear panel can be used to interlink any number of HPA4s
for expanding. The AUX In input on each channel is used to add an additional input signal to the master signal, with
the corresponding Balanced Control to determine the mix ratio between the two signals.
In parallel with the Headphone Outputs on the rear panel, the Headphone Output on the front panel is also used to
output the signal of the individual channel.

2. FEATURE LIST

Signal Rack Unit
4 individual channels
Common input gain control, and individual output gain control
Up to 3 headphone outputs per channel
Direct In and Headphone Output on the front panel for easy operation, esp. used in the rack mounting application
Input and Output Level Meter
Balance Control to mix up the Main In and the Aux In signal
Main Outputs for chaining further HPA4 headphone amplifiers
Maximum audio quality even at high volume levels
Exceptionally rugged construction ensures long life and durability
Universal and professional headphone amplification system for studio and stage application
Manufactured under QS9000 certified quality system

3. CONTROL ELEMENTS

INPUT LEVEL(dBu)
18
12
6
0
6
12
18
CLIP
18
12
MUTE
L
3
2
4
R
LTO
DIRECT IN
1
5
0
6
INPUT GAIN
MAIN IN
BALANCE
MAIN SECTION
Excluding 1 knob control, 1 jack and 8 LEDs for the common main section, the
Amplifier also contains 3 Push-button switches, 2 knob controls, 2 phone jacks and 4 LEDs for each individual channel.
3.1 The ront anel
F
P
OUTPUT LEVEL(dBu)
0
0
OUTPUT LEVEL(dBu)
6
0
6
12
18
CLIP
18
12
6
0
MUTE
R
MONO
MUTE
L
MUTE
15
15
15
15
3
TREBLE
BASS
2
4
AUX IN
HEADPHONE OUT
1
5
6
AUX
0
MAIN IN
AUX
OUTPUT GAIN
BALANCE
CHANNEL 1
3
INPUT LEVEL(dBu)
18
12
6
0
6
12
18
CLIP
3
2
4
R
LTO
DIRECT IN
1
0
6
INPUT GAIN
MAIN SECTION
1
2
LTO products by purchasing our HPA4 4-Channel Head-
LTO HPA4 4-Channel Headphone Amplifier performs a number of
0
0
OUTPUT LEVEL(dBu)
6
12
18
CLIP
18
12
6
0
6
12
18
R
MONO
MUTE
L
MUTE
R
15
15
15
15
3
TREBLE
BASS
2
4
2
AUX IN
HEADPHONE OUT
1
5
1
6
0
MAIN IN
AUX
0
OUTPUT GAIN
BALANCE
OUTPUT GAIN
CHANNEL 2
5
12
6
7
13
OUTPUT LEVEL(dBu)
0
18
12
6
0
6
12
18
CLIP
MUTE
L
MUTE
R
MONO
15
15
3
TREBLE
2
4
AUX IN
5
5
1
MAIN IN
AUX
0
6
BALANCE
OUTPUT GAIN
CHANNEL 1
10
8 11
4
4
0
0
OUTPUT LEVEL(dBu)
CLIP
18
12
6
0
6
12
18
CLIP
MONO
MUTE
L
MUTE
R
MONO
15
15
15
15
3
3
TREBLE
BASS
4
2
4
AUX IN
HEADPHONE OUT
5
1
5
6
6
MAIN IN
AUX
0
BALANCE
OUTPUT GAIN
CHANNEL 3
LTO HPA4 4-Channel Headphone
14
0
15
15
BASS
HEADPHONE OUT
9
0
0
HPA4
15
15
15
15
4-Channel
TREBLE
BASS
AUX IN
HEADPHONE OUT
HEADPHONE
ON
AMPLIFIER
OFF
POWER
CHANNEL 4