Harley Benton Mighty 15TH Guitar Amp Head User Manual
- June 15, 2024
- Harley Benton
Table of Contents
Harley Benton Mighty 15TH Guitar Amp Head
General information
This user manual contains important information on the 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 to another user, be sure that they
also receive this manual.
Our products and user manuals are subject to a process of continuous
development. We there‐ fore reserve the right to make changes without notice.
Please refer to the latest version of the user manual which is ready for
download under www.thomann.de.
Further information
On our website (www.thomann.de) you will find lots of further information and details on the following points:
| Download | This manual is also available as PDF file for you to download. |
|---|---|
| Keyword search | Use the search function in the electronic version to find 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.
Notational conventions
This manual uses the following notational conventions:
Letterings
he letterings for connectors and controls are marked by square brackets and
italics.
Examples: [VOLUME] control, [Mono] button.
Symbols and signal words
In this section you will find an overview of the meaning of symbols and signal words that are used in this manual.
| 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.
Safety instructions
Intended use
This device is intended to be used for the amplification of signals from
musical instruments with electromagnetic pickups. Use the device only as
described in this user manual. Any other use or use under other operating
conditions 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.
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.
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.
DANGER!
Electric shock caused by short-circuit
Always use proper ready-made insulated mains cabling (power cord) with a
protective 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 registered electrician.
CAUTION!
Possible hearing damage
With loudspeakers connected, 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. 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. If this is not possible, keep a bigger distance to
the speaker or use sufficient ear protectors.
NOTICE!
Risk of fire
Do not block areas of ventilation. Do not install 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. Only operate the device within the ambient
conditions specified in the chapter ‘Technical specifications’ of this user
manual. Avoid heavy temperature fluctuations and do not switch the device on
immediately after it was exposed to temperature fluctuations (for example
after transport at low outside temperatures). Dust and dirt inside can damage
the unit. When operated in harmful ambient conditions (dust, smoke, nicotine,
fog, etc.), the unit should be maintained by qualified service personnel at
regular intervals to prevent overheating and other malfunction.
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.
NOTICE!
Possible damage due to installation of a wrong fuse
The use of different types of fuses can cause serious damage to the unit. Fire
hazard! Only fuses of the same type may be used.
NOTICE!
Possible staining
The plasticiser contained in the rubber feet of this product may possibly
react with the coating of your surface and after some time cause permanent
dark stains. In case of doubt, do not put the rubber feet directly on the
surface and use a suitable underlay if necessary, i.e. felt pads or similar.
Features
Special features of the device:
- 15 watt tube amp head for electric guitar
- Class A circuit with switchable output power
- 1 channel
- Power 15 W
- Reducible to 7 W
- 2 × 12AX7 preamp tube
- 2 × EL84 power tube
- 1 × 6E2 indicator tube
- Controls for gain, bass, mids, treble and volume
- Loudspeaker outputs for 8 and 16 Ω
- Effects loop
- Boost switch with footswitch option
- Robust metal housing
Installation and starting up
Unpack and check carefully there is no transportation damage before using the unit. Keep the equipment packaging. To fully protect the product 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 off. Use the shortest possible high-quality cables for all connections. Take care when running the cables to prevent tripping hazards.
Connections and controls
1| [INPUT] | 1/4″ jack socket to connect your instrument
---|---
2| [BOOST] | boost switch
3| [GAIN] | gain control for the overall gain and overdrive level
4| [BASS] | control for boosting / attenuating the bass
5| [MIDDLE] | control for boosting / attenuating the mids
6| [TREBLE] | control for boosting / attenuating the treble
7| [VOLUME] | control to adjust the volume
8| [STD] [7W] [15W]
Toggle switch for selecting output power and standby
| [STD] : Standby
[7W] : Power reducer to 7 W
[15W] : Power 15 W
9| [POWER] | main switch. Turns the device on and off.
10| [FS BOOST] | connection for foot switch to switch the boost on / off
11| [SEND] | 1/4″ jack socket of the serial effects loop for connecting
sound processors such as compressors, etc. The connection can also be used as
a line output, since the internal signal path is interrupted only by plugging
a plug into the [RETURN] input. The SEND signal is tapped behind the EQ.
12| [RETURN] | 1/4″ jack input of the effects loop for returning the
processed signal
13| [2×16 Ω] | output for connecting speaker boxes with 2 × 16 Ω impedance
14| [1×8 Ω] | output for connecting speaker boxes with 8 Ω impedance
15| [1×16 Ω] | output for connecting speaker boxes with 16 Ω impedance
16| High voltage fuse
17| IEC chassis plug for connecting the mains cable with fuse holder
The amplifier can operate a pair of 16 Ω speakers and combine them into an 8 Ω load, or you can operate a single 8 Ω speaker by connecting it to the output jacks labelled 1×8 Ω or 2×16 Ω.
Technical specifications
| Speaker | Preamp | 2 × 12AX7 |
|---|---|---|
| Power amplifier | 2 × EL84 | |
| Indicator tube | 1 × 6E2 | |
| Amp class | A | |
| Output power | max. 15 W @ 8 or 16 Ω | |
| Input connections | Power supply | IEC chassis plug C14 |
| Instrument | 1 × 1/4″ jack socket | |
| Effects loop | 1 × 1/4″ jack socket | |
| Output connections | Speaker | 1 × 1/4″ jack socket (8 Ω) |
2 × 1/4″ jack socket (16 Ω)
Effects loop| 1 × 1/4″ jack socket
Foot switch| 1 × 1/4″ jack socket
Supply voltage| 230 V 50 Hz
Fuse| 5 mm × 20 mm, 1 A, 250 V, slow-blow
High voltage fuse| 5 mm × 20 mm, 315 mA, 250 V, slow-blow
Dimensions (W × H × D)| 330 mm × 162 mm × 146 mm
Weight| 5.9 kg
Ambient conditions| Temperature range| 0 °C…40 °C
Relative humidity| 20 %…80 % (non-condensing)
Further information
| Power rating | 15 W |
|---|---|
| Power tubes | EL84 |
| Channels | 1 |
| Reverb | no |
| Foot switch | yes |
Plug and connection assignment
Introduction
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!
1/4″ TS phone plug (mono, unbalanced)
| 1 | Signal |
|---|---|
| 2 | Ground, shielding |
Cleaning
Device components
Clean the device components that are accessible from the outside regularly. The cleaning frequency depends on the operating environment: damp, smoky or particularly dirty environments can cause greater accumulation of dirt on the device components.
- Clean with a dry soft cloth.
- Stubborn dirt can be removed with a slightly dampened cloth.
- Never use solvents or alcohol for cleaning
Protecting the environment
Disposal of the packaging material
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.
Disposal of your old device
This product is subject to the European Waste Electrical and Electronic Equipment Directive (WEEE) in its currently valid version. 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.
CUSTOMER SUPPORT
Thomann GmbH
Hans-Thomann-Straße 1
96138 Burgebrach
Germany
Telephone: +49 (0) 9546 9223-0
Internet: www.thomann.de
