thomann Achat 108 Sub A Active Speaker User Manual
- June 5, 2024
- Thomann
Table of Contents
thomann Achat 108 Sub A Active Speaker
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:
The 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 signs| Type of danger
---|---
| Warning – danger zone.
Safety instructions
Intended use
This device is designed for sound reinforcement. 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 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 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 parquet, linoleum, laminate or PVC floor and after some time cause permanent dark stains. In case of doubt, do not put the rubber feet directly on the floor, but use felt-pad floor protectors or a carpet.
Features
Special features of the device:
- Inputs: XLR / 1/4″ jack combo sockets, RCA sockets
- Outputs: 2 lockable NL4 chassis connector for passive speaker boxes (Top)
- 8″ woofer
- Controls for volume and bass
- Structure paint
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.
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.
Pin assignment
NL4 mounting connectors for speaker connections The adjoining figure shows
the pin assignment of the lockable NL4 panel connectors.
Jack plugs for signal inputs The figure and the table show the pin assignment of the 1/4” jack plugs (mono).
- Signal
- Ground
XLR connectors for signal inputs
XLR / 1/4” jack combo sockets (balanced) are used for the signal inputs. The figure and the table show the XLR pin assignment.
- Ground
- Positive signal (+)
- Negative signal (–)
RCA connectors for signal inputs
The figure and the table show the RCA plugs pin assignment.
- Signal
- Ground
Tips on handling speakers
We recommend you to set up the speakers in a way, that the sound signals can reach the audience unobstructedly. It will often be helpful to mount the speakers on tripods. Thus, the sound will be evenly spread with maximum range throughout the audience area. Always use the high-grade cable to connect your equipment. Otherwise, you won’t reach maximum sound quality. For optimum results both impedance and power handling of the speakers must match the requirements of the amplifier. Always follow the technical specifications of the speakers! The overall impedance of the connected loudspeakers must not decreed the minimum output impedance of the amp. The amps max. RMS output power should be 50 % above the power handling capacity of the connected speakers. If you notice distortion during operation, either the amp or the speaker is overloaded. This may permanently damage the amp or the speaker. Always reduce the volume when you hear distortion.
Connections and operating elements
1| [POWER]
The indicator light indicates that the device is switched on and operational.
---|---
2| [SIG]
The indicator light indicates that an input signal is present.
3| [CLIP]
Indicates overload (clipping). In this case, the level of the input signal is too high.
4| [BASS]
Control for boosting / attenuating the low frequencies
5| [VOLUME]
Control for adjusting the master volume (built-in subwoofer and connected external loudspeakers)
6| Phasing switch. Shifts the phase of the subwoofer signal by 180 °, if
necessary. This avoids unwanted cancellation effects in combination with other
speakers.
7| [INPUT]
Signal inputs, designed as RCA sockets
8| [INPUT]
Signal inputs, designed as XLR / 1/4” jack combo sockets
---|---
9| [OUTPUT]
Terminal connections for a pair of external, passive loudspeakers, designed as NL4 sockets
10| IEC chassis plug for power supply with fuse holder
11| [POWER]
Mains switch. Turns the device on and off.
Technical specifications
| Speaker | 1 × 8″ woofer |
|---|---|
| Input connections | Input signal |
| Input signal | 1 × pair of RCA sockets (L/R) |
| Power supply | IEC chassis plug C14 |
| Input impedance | 20 kΩ (balanced), 10 kΩ (unbalanced) |
| Output connections | Output signal |
| Output power | RMS: 100 W |
| Output for passive speaker (Top) | 2 × 60 W (RMS) @ 4 Ω |
| Frequency range | 40…125 Hz |
| Crossover frequency | 120 Hz |
| Sound pressure level (SPL), max. | 116 dB |
| Power consumption | 275 W |
| Supply voltage | 230 V 50 Hz |
| --- | --- |
| Fuse | 5 mm × 20 mm, 3,5 A, 250 V, slow-blow |
| Dimensions (W × H × D) | 360 mm × 300 mm × 436 mm |
| Weight | 11.5 kg |
| Ambient conditions | Temperature range |
| Relative humidity | 20 %…80 % (non-condensing) |
Further information
| Multi-channel power amp | yes |
|---|---|
| Number of woofers | 1 |
| High Cut | Fixed |
| Stand flange | No |
| Casters | No |
| Suitable protective cover | Item no. 514851 (not included) |
| Colour | black (item no. 266719), white (item no. 302856) |
Protecting the environment
Disposal of the packaging mate‐rial
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. ****