Table of contents General information..........................5 1.1 Symbols and signal words....................... 5 Safety instructions............................. 7 Features............................... 10 Installation and starting up........................ 11 Connections and controls........................12 Technical specifications........................17 Plug and pin assignments........................20 Protecting the environment......................23 Block-800B Bass Head...
Please refer to the latest version of the documentation, which is ready for download under www.thomann.de. 1.1 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 document. Block-800B Bass Head...
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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. Block-800B Bass Head...
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 when covers, safety equipment or optical components are missing or damaged. Block-800B Bass Head...
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Never subject the device to liquids or moisture. Never move the device to another location while it is in operation. In environments with increased dirt levels (for example due to dust, smoke, nicotine or mist): Have the device cleaned by qualified specialists at reg‐ ular intervals to prevent damage due to overheating and other malfunctions. Block-800B Bass Head...
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The plasticiser contained in the rubber feet of this product may react with the coating of the floor and cause permanent dark stains after some time. If necessary, use a suitable mat or felt slide to prevent direct contact between the device’s rubber feet and the floor. Block-800B Bass Head...
Class-D ICE power amplifier 4-band equalizer Smart compressor D.I. output with pre/post & lift/ground switch Input sensitivity switchable for active or passive basses Mute function Tuner output Line input with volume control Headphone output FX loop Speaker outputs: Speaker Twist Block-800B Bass Head...
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. Block-800B Bass Head...
Connections and controls Connections and controls Front ö & Block-800B Bass Head...
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| 3.5-mm jack input for connecting a line level player, for example an MP3 player or mobile phone 12 [LINE IN] | Volume control for the input 13 [MASTER] | Control for the master volume of the device 14 [ON / OFF] | On/off switch for the compressor function Block-800B Bass Head...
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[HIGH] position, otherwise the input level will not be sufficient to fully drive the amplifier. If active instruments are in use, this switch should be in the [LOW] position, otherwise clipping and thus a pre-stage overload can easily occur, resulting in highly disruptive distortions. 19 [INPUT] | 6.35-mm jack socket for connecting an electric bass Block-800B Bass Head...
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Connections and controls Back Block-800B Bass Head...
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23 [RETURN] | 6.35-mm jack socket of the effects loop for returning the processed signal 24 [POWER] | Rubber panel plug for connecting the power cable with fuse holder 25 Mains switch. Turns the device on and off. Block-800B Bass Head...
1 × 6.35-mm jack socket Effects loop 1 × 6.35-mm jack socket Line 1 × 3.5 mm jack socket Output connections Speakers 2 × Speaker Twist Effects loop 1 × 6.35-mm jack socket Direct Out 1 × XLR panel plug, 3-pin Block-800B Bass Head...
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5 mm × 20 mm, 6.3 A, 250 V, slow blow Dimensions (W × H × D) 240 mm × 88 mm × 240 mm Weight 2.9 kg Ambient conditions Temperature range 0 °C…40 °C Relative humidity 20%…80% (non-condensing) Block-800B Bass Head...
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Technical specifications Further information Equalizer 4-band Limiter External effects loop Headphone connection Tuner out Compressor Effects processor DI output Rack format Matching bag Item no. 194575 Block-800B Bass Head...
‘Ground’ and ‘Signal’, in a balanced transmission a second core is added. This also transfers the signal, but phase-shifted by 180°. 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. Block-800B Bass Head...
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1/4" TS phone plug (mono, unbalanced) Signal Ground, shielding 1/4" TRS phone plug (mono, bal‐ anced) Signal (in phase, +) Signal (out of phase, –) Ground Three-pole 1/8" mini phone jack (stereo, unbalanced) Signal (left) Signal (right) Ground, shielding Block-800B Bass Head...
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Plug and pin assignments XLR plug (balanced) Ground, shielding Signal (in phase, +) Signal (out of phase, –) Shielding on plug housing (option) Speaker Twist connector Signal 1 (in phase) 1– Signal 1 (out of phase) Block-800B Bass Head...
Do not dispose of these materials with your normal household waste, but make sure that they are collected for recycling. Please follow the instructions and markings on the packaging. Observe the disposal note regarding documentation in France. Block-800B Bass Head...
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Also note that waste avoidance is a valuable contribution to environmental protection. Repairing a device or passing it on to another user is an ecologically valuable alternative to disposal. If your old device contains personal data, delete those data before disposing of it. Block-800B Bass Head...
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