EBS ValveDrive DI Professional Bass Equipment User Manual
- June 17, 2024
- EBS
Table of Contents
EBS ValveDrive DI Professional Bass Equipment
Product Information
Specifications:
- Tube Type: ECC83/12AX7
- Input Jack: 1/4 inch
- Output Jack : 1/4 inch
- Balanced Output: XLR
- Power Supply : DC power jack (use only stabilized power supply)
Product Usage Instructions
Controls:
The EBS ValveDrive pedal features the following controls:
- GAIN: Controls the overall gain and amount of overdrive.
- BASS, MIDDLE, and TREBLE: The filter section of the EBS ValveDrive. Controls the timbre of the sound and is useful for refining overdriven sounds.
- VOLUME: Controls the overall volume of the EBS ValveDrive.
- ACTIVE FOOTSWITCH: When pressed and the LED is red, the pedal is active. When deactivated, the pedal is bypassed or in mute mode (depending on the setting of the bypass/mute switch on the rear panel).
- VINTAGE FOOTSWITCH: Controls the character of the Valve drive. When the LED is red, the pedal is set to the standard modern character. When the LED is yellow, the vintage mode is selected. The vintage character changes the tube timbre, and EQ, and compresses the signal over the gain stage.
How to Change the Tube:
- Remove the power from the unit and wait at least five (5) minutes.
- Carefully remove the chrome tube cover by loosening the four (4) holding bolts.
- Replace the tube with the same type, i.e., ECC83/12AX7.
- Attach the four mounting screws using moderate tension.
The Filters:
The EBS ValveDrive is equipped with classical-style passive filters specially
tuned for bass guitar. The BASS, MIDDLE, and TREBLE controls affect the timbre
of the sound and can be used to refine overdriven sounds.
Flat Frequency Response:
The special case when you want a flat frequency response from the passive
filters is obtained when the BASS and TREBLE controls are set to MINIMUM, and
the MIDDLE control is set to MAXIMUM. Note: In each graph, the other two
controls are set to the maximum position.
Thank you for purchasing the EBS ValveDrive pedal!
The EBS ValveDrive tube preamp/overdrive pedal offers the possibility for classic and traditional warm tube sounds up to hard and pure tube distortion. The ValveDrive pedal can make your bass either glow or growl, whether you want your instrument to sing or scream. We hope you’ll enjoy using the EBS ValveDrive pedal!
The EBS Team
CONTROLS
FRONT PANEL
-
GAIN
Controls the overall gain and amount of overdrive. -
BASS, MIDDLE AND TREBLE
The filter section of the EBS ValveDrive. Controls the timbre of the sound and is very useful for refining overdriven sounds. These filters are of classic passive style. Please refer to the filters section for more info. -
VOLUME
Controls the overall volume of the EBS ValveDrive. -
ACTIVE FOOTSWITCH
When the footswitch is pressed and the LED is red, the pedal is active. When deactivated the pedal is bypassed or in mute mode (depending on the setting of the bypass/mute switch on the rear panel). -
VINTAGE FOOTSWITCH
Controls the character of the Valve drive. When the LED is RED, the pedal is set to standard MODERN character. When the LED is YELLOW, the VINTAGE mode is selected. The vintage character changes the tube timbre, eq and compresses the signal over the gain stage.
REAR PANEL
-
INPUT jack
Connect your instrument here. -
PAD SWITCH (OdB/-10dB)
Selects operation for active or passive instruments. Press this switch if you are using an active instrument or using another pedal before the EBS ValveDrive. -
DC POWER JACK
Connect the DC power supply to this jack. Use only a stabilized power supply if not original EBS adapter AD9+. -
1/4″ OUTPUT
Connect this output to an amplifier or another pedal. -
BALANCED OUTPUT (XLR)
Use this output to connect to e.g. a mixing console or sound card. -
GND LIFT SWITCH
Disconnects the ground from the balanced output.
INFORMATION FOR QUALIFIED SERVICE PERSONNEL ONLY!
HOW TO CHANGE THE TUBE
- Remove the power from the unit and wait at least five (5) minutes.
- Carefully remove the chrome tube cover by losing the four (4) holding bolts.
- Replace the tube with the same type, i.e. ECC83/12AX7.
- Attach the four mounting screws using moderate tension.
WARNING!
To prevent fire shock hazards, do not expose this appliance to rain or
moisture. No user-serviceable parts inside. Refer servicing to qualified
service personnel.
BLOCK DIAGRAM EBS VALVE DRIVE
THE FILTERS
The EBS ValveDrive is equipped with classical-style passive filters especially
tuned for bass guitar. The following graphs show the frequency response of the
BASS, MIDDLE and TREBLE controls.
FLAT FREQUENCY
RESPONSE
The special case when you want a flat frequency response from the passive
filters is obtained when BASS and TREBLE controls are set to MINIMUM, and the
MIDDLE control is set to MAXIMUM.
TECHNICAL SPECIFICATIONS EBS VALVE DRIVE
Specifications are subject to change
without notice.
SAMPLE SOUND SETTINGS
The following examples below show a few of the many sonic possibilities of
the EBS ValveDrive.
CLASSIC ROCK
VINTAGE OVERDRIVE
CRUNCH
MY PERSONAL SOUND
EBS Sweden AB Grindstuvägen 44-46 SE-167 33 Bromma Sweden Phone : +46-8-7350010 Fax : +46-8-7350005 Web : www.ebssweden.com E-mail : [email protected]
FAQ’s
Can I use the EBS ValveDrive with an active instrument?
Yes, the EBS ValveDrive features a PAD SWITCH (0dB/-10dB) on the rear panel that allows you to select the operation for active instruments.
How do I connect the EBS ValveDrive to a mixing console or sound card?
You can use the balanced output (XLR) on the rear panel to connect the EBS ValveDrive to a mixing console or sound card.
What type of power supply should I use with the EBS ValveDrive?
It is recommended to use a stabilized power supply. If you do not have the original EBS adapter AD9+, make sure to use a stabilized power supply.
How do I obtain a flat frequency response from the passive filters?
Set the BASS and TREBLE controls to MINIMUM, and the MIDDLE control to MAXIMUM to achieve a flat frequency response.