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General| Power Output | 100 Watts |
|---|---|
| Channels | 2 |
| Tubes (Preamp) | 4 x ECC83/12AX7 |
| Tubes (Power Amp) | 4 x EL34 |
| Master Volume | Yes |
| Presence Control | Yes |
| Effects Loop | Yes, serial |
| Weight | 21 kg |
| Dimensions | 71 x 27 x 27 cm |
| EQ | 3-band (Bass, Middle, Treble) |
| Footswitch | Yes (channel switching) |
| Speaker Outputs | 4, 8, 16 Ohms |
Description of the input jack, clean gain, and lead gain controls for adjusting signal sensitivity and preamp distortion.
Details on the Bright, Bottom, Bass, Middle, and Treble controls for shaping the amplifier's tone.
Information on Lead Volume, Mid Boost, and the Clean/Lead channel switching functions.
Explanation of the Master A/B volume controls and the Presence control for the power amp stage.
Details on the Power Tube Monitor LEDs (V1-V4) and the Power Tube Failure Indication System.
Guidance on using the Stand By switch for tube warming and the main Power switch.
Information on the AC power inlet and the location and replacement of mains fuses.
Details on the 1/4" stereo jacks for connecting footswitches for Mid Boost/FX Loop and Channel/Master switching.
Explanation of the Noise Gate Threshold knob for reducing unwanted noise in the Lead channel.
Description of the FX Loop send, return, and balance controls for integrating external effects.
Information on the speaker output jacks (4, 8, 16 Ohms) and compatible cabinet connections.
Instructions for using a two-way footswitch (e.g., ENGL Z-4) for channel and master switching.
Guidance on using a MIDI switcher (e.g., ENGL Z-11) for advanced remote control of amp functions.
Diagrams and explanations for wiring footswitches to the amp's jacks (20, 21).
Specifications for rated power output, input sensitivity levels for clean and FX return.
Details on the types of tubes used (ECC83, 6L6GC) and the rating of internal and external fuses.
Physical dimensions, weight, and a visual layout of the power tubes (V1-V4) and preamp tubes (V5-V8).
Explanation of the specific function of each preamp tube (V5-V8) and power tubes (V1-V4).
Diagnosing problems related to the amp not powering up or control functions not responding.
Troubleshooting issues with footboards or MIDI switchers not controlling amp functions.
Identifying causes for no sound output, including speaker connection and amp activation.
Addressing humming noises by checking ground connections, shielding, and magnetic interference.
Resolving issues where the electronic power amp protection circuit trips due to tube failure or overload.
Examples of sound settings for various clean tones: Crystal Clean, Jazzy Whispers, LA Hairy Clean, Blues Crunch.
Examples of sound settings for various lead tones: Vintage Blues Crunch, Rock Rhythm, Rock Lead, Heavy Metal Rhythm, Metal Lead.
Precautions for safely handling, transporting, and protecting the tube amplifier from damage.
Guidelines for cleaning the amp's exterior and ensuring adequate airflow for cooling.
Advice on operating temperatures, mains voltage, and proper procedures for tube replacement.
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