User Manual PA-250 Power Attenuator
Thomann GmbH Hans-Thomann-Straße 1 96138 Burgebrach Germany Telephone: +49 (0) 9546 9223-0 Internet: www.thomann.de 21.10.
Table of contents Table of contents 1 General information................................................................................................................................. 1.1 Further information........................................................................................................................... 1.2 Notational conventions.................................................................................................................... 1.3 Symbols and signal words.....
PA-250 Power Attenuator
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 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. 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.
General information Warning signs Type of danger Warning – high-voltage. Warning – danger zone.
Safety instructions 2 Safety instructions Intended use This device is used to attenuate the output level of guitar amps. Use the device only as described in this user manual. Any other use or use under other operating conditions is consid‐ ered 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 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! Operating conditions This device has been designed for indoor use only. To prevent damage, never expose the device to any liquid or moisture.
Features 3 Features Power soak for tube amplifiers, ideal for use in rehearsal rooms, recording studios and on stage. n n n n n n n Power consumption: max.
Connections and controls 4 Connections and controls ö # $ % & ' ( ) * 12 PA-250 Power Attenuator + ,- .
Connections and controls 1 [BY PASS] | toggle switch for disabling the power reducer. The LED lights. The signal is output just as loud as if the speaker was connected directly to the amplifier. 2 [POWER (db)] | rotary control for adjusting the volume of the signal at the speaker output when the device is working as a power attenuator. Turn this control clockwise to reduce the volume of the output signal in steps of 2…3 dB. Turn the control to ‘–15’ to enable the rotary control [FINE].
Connections and controls 9 [LINE OUT] | Line output for connecting PA equipment or a mixing console The LED [OUT] lights when PA equipment or a mixing console is connected. 10 [LINE LEVEL] | rotary control for adjusting the signal volume at the line out 11 [POWER] | input socket for an optional power adapter If you want to run the LEDs and the fan permanently stable, you can use an optional power adapter as power supply. 12 [AUX POWER] | status LED.
Connections and controls 4.
Technical specifications 5 Technical specifications Max.
Technical specifications Further information Noise reduction no DI output yes Speaker simulation no Dummy Load yes PA-250 Power Attenuator 17
Plug and connection assignment 6 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 1/4" TS phone plug (mono, unbalanced) 1 Signal 2 Ground, shielding 1 Signal (in phase, +) 2 Signal (out of phase, –) 3 Ground 1 Ground, shielding 2 Signal (in phase, +) 3 Signal (out of phase, –) 4 Shielding on plug housing (option) 1/4" TRS phone plug (mono, bal‐ anced) XLR plug (balanced) PA-250 Power Attenuator 19
Cleaning 7 Cleaning Device parts Clean the externally accessible device parts regularly. The frequency of cleaning depends on the operating environment: wet, smoky or particularly dirty surroundings can cause more accumulation of dirt on the device parts. n Clean with a soft dry cloth. n Stubborn stains may be removed with a slightly damp cloth. n Never use cleaners containing alcohol or thinner.
Protecting the environment 8 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.
Notes 22 PA-250 Power Attenuator
Musikhaus Thomann · Hans-Thomann-Straße 1 · 96138 Burgebrach · Germany · www.thomann.
