Tube EQ - Uncategorized Electro Harmonix - Free user manual and instructions
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| Type of product | Equalizer |
| Model | Tube EQ |
| Brand | Electro Harmonix |
| Circuit technology | Vacuum tube |
| Number of bands | 6 |
| Frequency ranges | 20 Hz - 20 kHz |
| Controls | Level, boost/cut per band, bypass |
| Power supply | 9V DC or 12V AC |
| Power consumption | 2.5 W |
| Input impedance | 1 MΩ |
| Output impedance | 600 Ω |
| Dimensions (W x D x H) | 8.25 x 5.75 x 3.5 inches |
| Weight | 2.2 lbs |
| Chassis material | Steel |
| Tube complement | 2 x 12AX7 |
| Bypass | True bypass |
| Indicator light | LED power indicator |
| Cleaning instructions | Wipe with dry cloth; avoid solvents |
| Safety rating | CE, FCC compliant |
| Breakdown voltage | 500V |
| Repairability | Replaceable tubes; modular PCB |
| Operating temperature | 0°C - 40°C |
| Storage temperature | -20°C - 60°C |
| Included accessories | AC adapter, user manual |
Frequently Asked Questions - Tube EQ Electro Harmonix
What is the Tube EQ and what does it do?
The Tube EQ is a vacuum tube equalizer designed to shape the tonal balance of audio signals. It provides six bands of EQ with boost/cut controls, ideal for studio or live sound.
How do I power the Tube EQ?
Connect the included 9V DC power adapter to the unit. Ensure the voltage matches your region. The unit can also be powered by a standard 9V battery (not included).
What kind of tubes does the Tube EQ use?
It uses two 12AX7 preamp tubes. These can be replaced if worn out; always use matched tubes for best performance.
How do I clean the Tube EQ?
Unplug the unit and wipe the exterior with a soft, dry cloth. Do not use liquid cleaners or abrasives. Keep away from dust and moisture.
Can I use the Tube EQ with a guitar or bass?
Yes, it works with electric guitars, basses, keyboards, and line-level signals. Use 1/4' instrument cables for input and output.
What is the frequency range of each band?
The six bands are centered at 60 Hz, 250 Hz, 500 Hz, 1.5 kHz, 4 kHz, and 12 kHz with adjustable boost/cut of ±12 dB.
How do I bypass the Tube EQ?
Press the true bypass footswitch to engage or disengage the equalizer. When bypassed, the instrument signal passes through without coloration.
What should I do if the unit is not working properly?
Check the power supply and cable connections. If issues persist, try replacing the tubes or consult the manual. Do not open the unit yourself.
Is the Tube EQ safe for use with all audio equipment?
Yes, it has high input impedance and low output impedance, making it compatible with most audio gear. Follow the recommended signal levels.
Where can I find replacement tubes or spare parts?
Contact Electro Harmonix customer support or authorized dealers. Tubes are standard 12AX7 and can be found at music stores.
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USER MANUAL Tube EQ Electro Harmonix
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Product information
Brand : Electro Harmonix
Model : Tube EQ
Category : Uncategorized