Summary of MK I
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Echolette mk i tube amp head user manual.
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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 07.06.2016, id: 344876.
Page 3: Table of Contents
Table of contents 1 general information................................................................................................................................. 5 1.1 further information.............................................................................................................
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9 protecting the environment.............................................................................................................. 36 table of contents tube amp head 4.
Page 5: General Information
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 ma...
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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 intere...
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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. The individual steps of an instruction are numbered consecutively. The result of a step i...
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References to other locations in this manual are identified by an arrow and the specified page number. In the electronic version of the manual, you can click the cross-reference to jump to the specified location. Example: see Ä ‘cross-references’ on page 8. 1.3 symbols and signal words in this secti...
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Warning signs type of danger warning – high-voltage. Warning – danger zone. General information echolette mk i 9.
Page 10: Safety Instructions
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 liab...
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Danger! Electric shock caused by high voltages inside within the device there are areas where high voltages may be present. Completely disconnect the device from the power supply before you open or remove covers. Mount all covers and attach them firmly before connecting the device again. Danger! Ele...
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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 liqui...
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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 ...
Page 14: Features
3 features n full tube guitar amp head n drive channel (d-channel) n clean channel (f-channel) n serial fx loop with send / return level n two output stage tubes, five pre-stage tubes n class ab push-pull output stage features tube amp head 14.
Page 15: Notes On Use
4 notes on use 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 f...
Page 16: Connections and Controls
5 connections and controls front panel connections and controls tube amp head 16.
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1 [input] input socket for instrument cable, designed as a 6.35 mm jack socket (mono). 2 [f channel] clean channel for full, warm sound with lots of headroom, especially suitable for overdrive and distortion effects. [gain] gain signal for the clean channel. Amplifies the input signal and generates ...
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[gain] gain signal for the drive channel. Amplifies the input signal and generates a slightly compressed sound. [treble], [middle], [bass] control to adjust the settings of the 3-band equaliser in the drive channel. [volume] control to adjust the volume of the drive channel. At high volume, the outp...
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6 [standby] with this switch, the high voltage is switched to the tubes (upper switch position). The amp is then ready for opera‐ tion. If the high voltage is switched off (lower switch position), the amp is in standby mode. To protect the tubes, the satellite speaker should be switched to standby a...
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Rear panel connections and controls tube amp head 20
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9 iec chassis plug with fuse holder. 10 [speaker] connection sockets for loudspeaker boxes (designed as 6.35-mm jack sockets) with the following connection options: 1 × 16 Ω connect a 16 Ω loudspeaker box to this socket. 1 × 8 Ω or 2 × 16 Ω connect either one 8 Ω loudspeaker box or two loudspeaker b...
Page 23: Maintenance
6 maintenance danger! Electric shock caused by high voltages inside inside the device, a voltage of up to 500 v may be present, even if the device is switched off. The maintenance measures described below require specific electrical engi‐ neering expertise and must only be carried out by appropriate...
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Notice! Possible damage from dirt or fingerprints. Dirt or fingerprints can destroy the glass pistons in the tubes. Never hold the glass pistons directly with your fingers. Use clean gloves or a clean cloth made from lint-free material. 6.1 replacing the main fuse the fuse holder for the main fuse i...
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6.2 replacing tubes pre-stage tubes v1 … v5 can easily be replaced without any detailed specialist knowledge. After a replacement, no further adjustment work is required in this case. Pre-stage tubes of type ecc83, 12ax7 and 7025 are permitted. Also permitted - however with less gain with the same c...
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Maintenance tube amp head 26.
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Name function v1 first stage for both channels. V2 second stage for both channels. V3 third and fourth stage for the d-channel. V4 fx loop. V5 phase inverter. V6 end stage tube. V7 end stage tube. 1. Make sure that the device is turned off, disconnected from the mains and completely cooled down. The...
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The replacement of v6 and v7 output stage tubes requires specific electrical engineering expertise and must only be carried out by appropriately qualified personnel. Inside the amp, a voltage of up to 500 v may be present, even if the device is switched off! Output stage tubes of type kt66 and other...
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6.3 adjusting the bias maintenance echolette mk i 29.
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13 resistors r53 and r54. 14 fuse f1. 15 potentiometer for setting the bias. 1. Make sure that the device is turned off, disconnected from the mains and completely cooled down. The minimum wait time after disconnecting the voltage supply is ten minutes. 2. Remove the cover on the reverse and pull th...
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8. Using a voltmeter, measure the drop in voltage at the two resistors r53 and r54. During measurement, turn the potentiometer anti-clockwise until the voltmeter displays a value of 25 mv. This corresponds to a value of 25 ma. This current is flowing through each of the two output stage tubes. A dif...
Page 32: Technical Specifications
7 technical specifications output power of ab push-pull output stage 35 w output stage tubes 2 × kt66 (standard), el34 or 6l6 (optional) pre-stage tubes 5 × ecc83 (standard), 12ax7, 7025, ecc81, ecc82, 12ay7, 12au7, 12at7 (optional) loudspeaker connection options 1 × 4 Ω 1 × 8 Ω 1 × 16 Ω 2 × 8 Ω 2 ×...
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Dimensions (w × d × h) 570 mm × 250 mm × 260 mm weight 8.3 kg technical specifications echolette mk i 33.
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8 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...
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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 signal (in phase, +) 2 signal (out of phase, –) 3 ground 1/4" ts...
Page 36: Protecting The Environment
9 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...
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Notes echolette mk i 37.
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Notes tube amp head 38.
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Musikhaus thomann · hans-thomann-straße 1 · 96138 burgebrach · germany · www.Thomann.De.