thomann Harley Benton HB-300B User Manual

HB-300B

bass combo

user manual

Musikhaus Thomann e.K.
Treppendorf 30
96138 Burgebrach
Germany
Telephone: [phone]
E-mail: [e-mail]
Internet: www.thomann.de

09.04.2014, ID: 301901

Table of contents

1 General notes............................................................................................................................................... 4

2 Safety instructions..................................................................................................................................... 6

3 Features....................................................................................................................................................... 11

4 Installation and starting up................................................................................................................ 12

5 Connections and operating elements........................................................................................... 14

6 Technical specifications....................................................................................................................... 20

7 Plug and connection assignment.................................................................................................... 21

8 Protecting the environment.............................................................................................................. 24

Table of contents

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1 General notes

This user manual contains important information on safe operation of the device. Read and
follow all safety notes and all instructions. Save this manual for future reference. Make sure
that it is available to all persons using this device. If you sell the device, include the manual for
the next owner.

Our products are subject to a process of continuous development. We therefore reserve the
right to make changes without notice.

This section provides an overview of the symbols and signal words used in this user manual.Symbols and signal words

General notes

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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 notes

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2 Safety instructions

This device is intended to be used for amplification and playback of signals from musical
instruments with electromagnetic pickups. Any other use or use under other operating condi‐
tions 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 sufficient 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.

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.

Intended use

Safety

Safety instructions

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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.

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 fire. If in doubt, seek advice from a regis‐
tered electrician.

Safety instructions

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CAUTION!
Possible hearing damage

The device can produce volume levels that may cause temporary or permanent
hearing impairment. Over an extended period of time, even levels that seem to
be uncritical can cause hearing damage.

Decrease the volume level immediately if you experience ringing in your ears or
hearing impairment. If this is not possible, keep a greater distance or use suffi‐
cient ear protectors.

CAUTION!
Risk of injury due to heavy weight

Due to the heavy weight of the device, at least two persons are required for trans‐
port and installation.

Safety instructions

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NOTICE!
Risk of fire

Do not cover the device nor any ventilation slots. Do not place the device near
any direct heat source. Keep the device away from naked flames.

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

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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 fire.

Safety instructions

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3 Features

Special features of the device

n Output power 300 watt (4 Ω)
n 1 × 15" Celestion speaker
n Switchable horn
n Graphic 7-band equalizer
n Compressor
n Effects loop
n Inputs

– Aux
– Footswitch

n Outputs

– DI (balanced)
– Tuner
– Line

n Standby function

Features

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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.

Establish all connections as long as the unit is switched off. Use the shortest possible high­quality cables for all connections.

CAUTION!
Risk of injury due to heavy weight

Due to the heavy weight of the device, at least two persons are required for trans‐
port and installation.

Installation and starting up

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NOTICE!
Possible property damage by magnetic fields

Loudspeakers produce a static magnetic field. Therefore, maintain an appropriate
distance to devices that can be adversely affected or damaged by an external
magnetic field.

Installation and starting up

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5 Connections and operating elements

Front panel

Connections and operating elements

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1 [INPUT]

1/4" phone socket to connect your instrument.
You can also connect other active signal sources like CD or MP3 players, keyboards, mixers etc. to this input.

2 [GAIN]

Control to adjust the preamp gain of the signal (volume) in channel 1.

3 [VOICE]

Control to adjust the tone colour of the signal in channel 1.

4 [CHANNEL SELECT]

Channel 1 / 2 select switch. The LED of the active channel lights permanently during operation.

5 [GAIN]

Control to adjust the preamp gain of the signal (volume) in channel 2.

6 [VOICE]

Control to adjust the tone colour of the signal in channel 2.

Connections and operating elements

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7 [COMPRESSOR]

Pushbutton for enabling the built-in compressor.
The LED [ACTIVE] lights permanently during operation, when the compressor is enabled. The LED [ON] indicates that

the compressor circuit is active and processes the signal. The signal level at which the compressor processes the
signal is affected by the gain controls (the higher the gain, the more the signal is compressed).

8 [7-BAND EQUALIZER]

Use the sliders of the equalizer to shape the sound of the amplifier depending on the frequency. In the zero position,
the signal is reproduced unchanged.

9 [LIMIT OFF]

Pushbutton for enabling or disabling the built-in limiter.
The limiter monitors the signal level of the amplifier and detects the impedance of a connected speaker automati‐

cally. The protection circuit is automatically activated when the unit is turned on and attenuates an excessive output
level to an uncritical level to avoid distortion.

10 [VOLUME]

Overall volume control.

Connections and operating elements

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11 [CD / LINE IN]

RCA input for connecting a CD player, cassette deck or the like.

12 [D.I. OUT]

Balanced XLR output for connecting the amplifier to a mixer.
The amplifier signal is supplied unchanged to the connected mixer.

13 [TUNER OUT]

Output for connecting a tuner (6.35 mm phone socket).

14 [FOOTSWITCH]

Connection for an optional footswitch (6.35 mm phone socket).
Use a foot switch to toggle between the channels of the amplifier.

15 [POWER]

Mains switch. Turns the device on and off.
If there is no signal input at the [INPUT] jack for 30 minutes, the device will automatically enter standby mode. As

soon as the [INPUT] jack receives a signal again, the device switches back to normal mode.

Connections and operating elements

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Rear panel

Connections and operating elements

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16 [AC INPUT | FUSE]

IEC chassis plug with fuse holder.
Find technical data on spare fuses and power supply below or next to the fuse holder.

17 Fan.
18 [FX SEND | RETURN]

In and output jacks for looping in an effects unit (6.35 mm jack sockets).

19 [Horn On | Off]

Toggle switch for enabling or disabling the built-in horn.

20 [EXTERNAL SPEAKER]

Output jack for connecting an external speaker box (6.35 mm phone socket).

Connections and operating elements

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6 Technical specifications

Output power 300 W (RMS) @ 4 Ω

145 W (RMS) @ 8 Ω
Frequency range 45 Hz…20 kHz
Input impedance 220 kΩ
Power consumption max. 450 W
Operating supply voltage

AC 220 – 240 V , 50/60 Hz
Fuse 2 A / 250 V
Dimensions (W × D × H) 625 mm × 320 mm × 512 mm
Weight 29 kg

Technical specifications

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7 Plug and connection assignment

This chapter will help you select the right cables and plugs to connect your valuable equip‐
ment in such a way that a perfect sound experience is ensured.

Please note these advices, because especially in ‘Sound & Light’ caution is indicated: Even if a
plug fits into the socket, an incorrect connection may result in a destroyed power amp, a short
circuit or ‘just’ in poor transmission quality!

Unbalanced transmission is mainly used in semi-professional environment and in hifi use.
Instrument cables with two conductors (one core plus shielding) are typical representatives of
the unbalanced transmission. One conductor is ground and shielding while the signal is trans‐
mitted through the core.

Unbalanced transmission is susceptible to electromagnetic interference, especially at low
levels, such as microphone signals and when using long cables.

In a professional environment, therefore, the balanced transmission is preferred, because this
enables an undisturbed transmission of signals over long distances. In addition to the conduc‐
tors ‘Ground’ and ‘Signal’, in a balanced transmission a second core is added. This also transfers
the signal, but phase-shifted by 180°.

Introduction

Balanced and unbalanced trans‐
mission

Plug and connection assignment

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Since the interference affects both cores equally, by subtracting the phase-shifted signals, the
interfering signal is completely neutralized. The result is a pure signal without any noise inter‐
ference.

1 Signal
2 Ground, shielding

1 Ground, shielding
2 Signal (in phase, +)
3 Signal (out of phase, –)

1/4" TS phone plug (mono,
unbalanced)

XLR plug (balanced)

Plug and connection assignment

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Drawing and table indicate the pin assignment of an RCA plug.

1 Signal
2 Ground, shielding

RCA connection

Plug and connection assignment

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8 Protecting the environment

For the transport and protective packaging, environmentally friendly materials have been
chosen that can be supplied to normal recycling.

Ensure that plastic bags, packaging, etc. are properly disposed of.
Do not just dispose of these materials with your normal household waste, but make sure that

they are collected for recycling. Please follow the notes and markings on the packaging.

This product is subject to the European Waste Electrical and Electronic Equipment Directive
(WEEE). Do not dispose with your normal household waste.

Dispose of this device through an approved waste disposal firm or through your local waste
facility. When discarding the device, comply with the rules and regulations that apply in your
country. If in doubt, consult your local waste disposal facility.

Disposal of the packaging mate‐
rial

Disposal of your old device

Protecting the environment

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Notes

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Notes

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Musikhaus Thomann e.K. · Treppendorf 30 · 96138 Burgebrach · Germany · www.thomann.de