E4-130, E4-250 power amplifier user manual
Musikhaus Thomann Thomann GmbH Hans-Thomann-Straße 1 96138 Burgebrach Germany Telephone: +49 (0) 9546 9223-0 E-mail: info@thomann.de Internet: www.thomann.de 10.04.
Table of contents Table of contents 1 General information................................................................................................................................. 1.1 Further information........................................................................................................................... 1.2 Notational conventions.................................................................................................................... 1.3 Symbols and signal words.....
General information 1 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.
General information 1.1 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.
General information 1.2 Notational conventions This manual uses the following notational conventions: Letterings 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 find an overview of the meaning of symbols and signal words that are used in this manual.
General information 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.
Safety instructions 2 Safety instructions Intended use This device amplifies electric audio frequency signals to operate passive speakers. 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.
Safety instructions 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 pro‐ tective contact plug. Do not modify the mains cable or the plug.
Safety instructions 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. 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.
Safety instructions 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.
Safety instructions 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.
Features 3 Features n Low mounting depth of only 408 mm n Output power – the t.amp E4-130 (item no. 348232): 4 × 130 W @ 8 Ω, 4 × 200 W @ 4 Ω – the t.amp E4-250 (item no.
Installation and starting up 4 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.
Installation and starting up NOTICE! Magnetic fields The device generates strong magnetic fields that can interfere with the function of poorly shielded devices. The strongest magnetic fields are directly above and below the power amplifier. Therefore, never place sensitive devices such as preamplifiers, radio transmission systems, or tape decks directly above or below the power amplifier.
Installation and starting up Available operating modes Depending on the individual application, the amplifier can be used in different operation modes: Stereo mode Both power amp channels operate independently of each other, each input (A and B) is amplified by one channel, speakers are connected to both channels, the volume for both outputs can be controlled separately.
Installation and starting up Both power amp channels are internally wired for providing double the output power. Only the signal from input A is amplified, speakers are only connected to the accordingly labelled output. The controls for channel A and channel B are used to adjust the volume. The phase of the second or fourth channel is reversed. The speaker must be operated using a Y-adapter cable to CH1 1+ to 1+ and CH2 1+ to 1–, see figure below.
Installation and starting up Total impedance On each output of the amplifier, the overall impedance resulting from the individual impe‐ dances of the connected speakers must not fall below the minimum allowable impedance of the amp's output. If you want to connect multiple speakers to one amplifier output, note the following: n when connecting speakers in series, the impedances add up.
Connections and operating elements 5 Connections and operating elements Front panel E4-130, E4-250 19
Connections and operating elements 1 [POWER] Mains switch. Turns the device on and off. The corresponding LED lights up green when the device is turned on. In standby mode, the LED lights red. As soon as the unit receives a signal, it switches back to normal mode and the LED will light up green again. 2 [CH-1], [CH-2], [CH-3], [CH-4] Volume control for the respective channel 3 [PAR] Lights up when the respective channel pair is operated in Parallel mode.
Connections and operating elements 6 [CLIP] Lights under the following conditions: n Channel overload. Reduce in this case the volume until the LED goes out. n Output short circuit. Turn off the device immediately, correct the short circuit and turn on the device again. 7 [PRO] Lights under the following conditions: n n n n Three to five seconds after switching on or off when the device is in an unstable condition. No speaker connected. The temperature of the power amp blocks has reached 85 °C.
Connections and operating elements Rear panel power amplifier 22
Connections and operating elements 8 IEC chassis connector for the power supply of the device. 9 [BREAKER] Resettable electronic fuse. If the fuse is triggered, fix the cause and then push the button to reset the fuse.
Connections and operating elements 14 [Gnd / Lift] Ground / lift switch. If hum is caused by a ground loop, you can use this switch to disconnect the connection between the earth pin of the device and the signal ground of the device. 15 [Stand-by ON | OFF] On / off switch for standby function. If the standby function is enabled, the device automatically switches to standby mode after thirty minutes without any input signal.
Technical specifications 6 Technical specifications E4-130 (item no.
Technical specifications Slew rate 15 V / µs Sensitivity 1000 mV Gain -55 dB … 30 dB Power consumption 1500 W Operating supply voltage 230 V Dimensions (W × H × D) 482 mm × 88 mm × 408 mm Weight 12.
Technical specifications E4-250 (item no.
Technical specifications Gain -52 dB … 33 dB Power consumption 2700 W Operating supply voltage 230 V Dimensions (W × H × D) 482 mm × 88 mm × 408 mm Weight 15.
Technical specifications Further information Channels 4 19" installation height 2 RU 2 Ω stable No DSP / crossover No Convection cooling No E4-130, E4-250 29
Plug and connection assignment 7 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.
Plug and connection assignment 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.
Plug and connection assignment XLR plug (unbalanced) 1 Ground, shielding 2 Signal 3 Bridged to pin 1 1, + Signal 1 (in phase) 1, – Signal 1 (out of phase) 2, + NC (not connected) 2, – NC (not connected) Speaker Twist connector power amplifier 32
Cleaning 8 Cleaning Fan grids The fan grids of the device must be cleaned of any contamination, such as dust, etc. on a reg‐ ular basis. Before cleaning, switch off the device and disconnect mains-operated devices from the mains. Only use pH-neutral, solvent-free and non-abrasive cleaning agents. Clean the unit with a slightly damp lint-free cloth.
Protecting the environment 9 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.
Musikhaus Thomann · Hans-Thomann-Straße 1 · 96138 Burgebrach · Germany · www.thomann.
