thomann Millenium HP4 User manual

HP4
headphone amplier
user manual

Musikhaus Thomann
Thomann GmbH
Hans-Thomann-Straße 1
96138 Burgebrach
Germany
Telephone: [phone]
E-mail: [email protected]
Internet: www.thomann.de
04.09.2018, ID: 234787 (V3)

Table of contents
1 General information................................................................................................................................. 4
1.1 Further information........................................................................................................................... 5
1.2 Notational conventions.................................................................................................................... 6
1.3 Symbols and signal words............................................................................................................... 6
2 Safety instructions..................................................................................................................................... 8
3 Features....................................................................................................................................................... 13
4 Installation and starting up................................................................................................................ 14
5 Connections and controls................................................................................................................... 15
6 Functions..................................................................................................................................................... 19
7 Technical specications....................................................................................................................... 20
8 Plug and connection assignment.................................................................................................... 22
9 Protecting the environment.............................................................................................................. 24
Table of contents
HP4
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1 General information
This manual contains important instructions for the safe operation of the unit. Read and follow
the safety instructions and all other instructions. Keep the manual for future reference. Make
sure that it is available to all those using the device. If you sell the unit please make sure that
the buyer also receives this manual.
Our products are subject to a process of continuous development. Thus, they are subject to
change.
General information
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1.1 Further information
On our website (www.thomann.de) you will nd lots of further information and details on the
following points:
Download This manual is also available as PDF le for you to download.
Keyword search Use the search function in the electronic version to nd the topics of
interest for you quickly.
Online guides Our online guides provide detailed information on technical basics
and terms.
Personal consultation For personal consultation please contact our technical hotline.
Service If you have any problems with the device the customer service will
gladly assist you.
General information
HP4
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1.2 Notational conventions
This manual uses the following notational conventions:
The letterings for connectors and controls are marked by square brackets and italics.
Examples: [VOLUME] control, [Mono] button.
1.3 Symbols and signal words
In this section you will nd an overview of the meaning of symbols and signal words that are
used in this manual.
Letterings
General information
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Signal word Meaning
DANGER! This combination of symbol and signal word indicates an
immediate dangerous situation that will result in death or
serious injury if it is not avoided.
CAUTION! This combination of symbol and signal word indicates a pos‐
sible dangerous situation that can result in minor injury if it
is not avoided.
NOTICE! This combination of symbol and signal word indicates a pos‐
sible dangerous situation that can result in material and
environmental damage if it is not avoided.
Warning signs Type of danger
Warning – high-voltage.
Warning – danger zone.
General information
HP4
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2 Safety instructions
This device is intended to be used for amplication and distribution of signals from audio
devices and musical instruments to the connected headphones and audio devices. Use the
device only as described in this user manual. Any other use or use under other operating con‐
ditions is considered to be improper and may result in personal injury or property damage. No
liability will be assumed for damages resulting from improper use.
This device may be used only by persons with sucient physical, sensorial, and intellectual
abilities and having corresponding knowledge and experience. Other persons may use this
device only if they are supervised or instructed by a person who is responsible for their safety.
Intended use
Safety instructions
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DANGER!
Danger for children
Ensure that plastic bags, packaging, etc. are disposed of properly and are not
within reach of babies and young children. Choking hazard!
Ensure that children do not detach any small parts (e.g. knobs or the like) from
the unit. They could swallow the pieces and choke!
Never let children unattended use electrical devices.
DANGER!
Electric shock caused by high voltages inside
Within the device there are areas where high voltages may be present. Never
remove any covers.
There are no user-serviceable parts inside.
Do not use the device if covers, protectors or optical components are missing or
damaged.
Safety
Safety instructions
HP4
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DANGER!
Electric shock caused by short-circuit
Always use proper ready-made insulated mains cabling (power cord) with a pro‐
tective contact plug. Do not modify the mains cable or the plug. Failure to do so
could result in electric shock/death or re. If in doubt, seek advice from a regis‐
tered electrician.
CAUTION!
Possible hearing damage
With loudspeakers or headphones connected, the device can produce volume
levels that may cause temporary or permanent hearing impairment.
Do not operate the device permanently at a high volume level. Decrease the
volume level immediately if you experience ringing in your ears or hearing
impairment.
Safety instructions
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NOTICE!
Risk of re
Do not block areas of ventilation. Do not install the device near any direct heat
source. Keep the device away from naked ames.
NOTICE!
Operating conditions
This device has been designed for indoor use only. To prevent damage, never
expose the device to any liquid or moisture. Avoid direct sunlight, heavy dirt, and
strong vibrations.
Safety instructions
HP4
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NOTICE!
Power supply
Before connecting the device, ensure that the input voltage (AC outlet) matches
the voltage rating of the device and that the AC outlet is protected by a residual
current circuit breaker. Failure to do so could result in damage to the device and
possibly injure the user.
Unplug the device before electrical storms occur and when it is unused for long
periods of time to reduce the risk of electric shock or re.
NOTICE!
Possible staining
The plasticiser contained in the rubber feet of this product may possibly react
with the coating of your parquet, linoleum, laminate or PVC oor and after some
time cause permanent dark stains.
In case of doubt, do not put the rubber feet directly on the oor, but use felt-pad
oor protectors or a carpet.
Safety instructions
headphone amplier
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3 Features
nexcellent sound quality
nexible switching matrix
n4 independent stereo inputs with unsymmetrical jack sockets
nfour signal outputs, each with line and headphone jack and individual volume control
nlow noise linear operational amplier for transparent sound with maximum headroom at
high output levels
nintegrated shielded double-regulated power supply
nInstallation in 19" racks (1 rack unit)
Features
HP4
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4 Installation and starting up
Unpack and carefully check that there is no transportation damage before using the unit. Keep
the equipment packaging. To fully protect the device against vibration, dust and moisture
during transportation or storage use the original packaging or your own packaging material
suitable for transport or storage, respectively.
Create all connections while the device is o. Use the shortest possible high-quality cables for
all connections. Take care when running the cables to prevent tripping hazards.
The unit has been designed for rack mounting in a standard 19-inch rack; it occupies one rack
unit.
Rack mounting
Installation and starting up
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5 Connections and controls
Front panel
Connections and controls
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1[VOLUME]
Volume control for the built-in speakers and headphone outputs.
2[PHONE]
Headphones outputs (1/4" phone socket, stereo).
3[LINE]
Line outputs (1/4" TRS phone jack, stereo) for looping through the input signals to the connected audio equipment.
4[INPUT SOURCE]
Rotary switch for the allocation of four rear-panel audio inputs on the front line and headphone outputs.
5[POWER]
LED to indicate the operating status. This LED shows that the unit is turned on.
Connections and controls
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Rear panel
Connections and controls
HP4
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6 IEC chassis plug for power supply with fuse holder.
7 Selector switch for the supply voltage of the device (115 V or 230 V, factory-set value).
8[ON | OFF]
Mains switch to turn the device on/o.
9[LEFT (MONO)]
Audio inputs (1/4" jack socket, unbalanced)
For using mono mode, connect the signal source to the input of the respective channel.
For using stereo mode, connect the left channel of the signal source to the input of the respective channel.
10 [RIGHT]
Audio inputs (1/4" jack socket, unbalanced)
For using stereo mode, connect the right channel of the signal source to the input of the respective channel.
Connections and controls
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6 Functions
The device amplies and distributes up to four input signals in mono or stereo mode to the
four integrated output channels. The output signals can be played via up to four headphones
and / or looped through to four more audio devices with line level.
Moreover, thanks to the exible switch matrix, you can use the rotary switch INPUT SOURCE
to link or mute the inputs and outputs of the four channels to your liking. Turn the dedicated
volume knobs to adjust the channel volume within a range of 0 to 10.
Functions
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7 Technical specications
Audio inputs 4 × (6.35-mm jack, unbalanced)
Impedance 47 kΩ
Peak-input level +25 dB
Gain-control range +35 dB
Headphone outputs. 4 × 6.35mm phone jack (stereo)
Max. output level: 300 mW (RMS), 1 W (Peak)
Output impedance 22 Ω
Max. gain +20 dB
Line outputs 4 × (6.35-mm jack, unbalanced/parallel)
Frequency range 20 Hz … 20 kHz (0 dB … –2 dB)
Distortion 0.02 %
Signal-to-noise ratio > 80 dB
Technical specications
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