GR BASS Combo Cube Acoustic User Manual

GR BASS Combo Cube Acoustic

PACKAGING AND STORAGE

PACKAGING
The Cube Acoustic is packed in a special cardboard box. The box contains the Cube Acoustic and power supply cable.
TRANSPORT
Please handle the box with care. A specific position during the transport is not required.
STORAGE
Please keep the amplifier in a dry and ventilated place. Ideal storage conditions: Temperature within -20C and 40C, Humidi- ty 20% to 80%.

PRODUCT DISPOSAL

Please follow the disposal instructions issued by your local council. By European Directive 2002/96 / EC, all electrical and electronic products should be disposed of by specific collection facilities appointed by the government or the local authorities.

DECLARATION OF CONFORMITY

The product complies with the following European directive:

• 2014/35 / EU – Electrical Safety
• 2014/30 / EU – Electromagnetic Compatibility
• 2011/65 / EU – Limited use of certain hazardous substances in electrical and electronic equipment

A full copy of the declaration of conformity is available from the manufacturer. The manufacturer is not responsible for any damage due to improper use of the product.

MAIN FEATURES HEAD

• XLR/Jack audio input (Ch1, Ch2)
• 2 SPEAKON audio outputs
• XLR DI Independent out (Ch1, Ch2)
• DI Volume (Ch1, Ch2)
• Anti-bump on DI out
• Pre/post Eq. DI (Ch1, Ch2)
• Ground Lift DI (Ch1, Ch2)
• D.I. Output Dual/Mix
• 48V (Ch1, Ch2)
• Phase Inversion (Ch1, Ch2)
• Piezo (Ch1, Ch2)
• Gain control (Ch1, Ch2)
• Channel selector
• Bass, Mid-Low, Mid-High and High equalization control (Ch1, Ch2)
• Deep Filter (Ch1, Ch2)
• Bright Filter (Ch1, Ch2)
• Pure Switch (Ch1, Ch2)
• Mute
• Master Volume control (Ch1, Ch2)
• Notch Filter
• Compressor
• Send-Return
• Ethernet Port for Pedalboard
• Pedalboard not included.

TECHNICAL FEATURES HEAD

POWER RMS 800 W @ 40

• DYNAMIC RANGE: 117dBA
• Parameters of nominal distortion output: a) TDH+N: – 0.005 % @ 1 W (40, 1 kHz), 0.0008 % @ 50 W (48, 100 Hz)
• Low output impedance: 6mW
• Total Efficiency: 84 % @ 800 W, 48

MAIN FEATURES CABINETS

• 3-Level selector for the tweeter

TECHNICAL FEATURES CABINET

• Impedance: 8 Ohm
• Bass Reflex : Rear
• Woofer: 1×12″ Custom GR Bass by Jensen SICA Neodym speaker
• Power Handling: 500W RMS (AES Standard)
• Tweeter: 1″
• Frequency Response: 40 Hz to 18 kHz
• Sensitivity: 98dB SPL

We recommend using it with an additional 8 Ohm speaker, but the head can also possibly manage a second 4 Ohm speaker

CONTROLS DESCRIPTION

FRONT PANEL CONTROLS

• 1. an INPUT XLR/JACK Ch1

• 1. b INPUT XLR/JACK Ch2

  • Input XLR/Jack for your instrument. We suggest using a good quality cable, to obtain the best audio performance.

• 2.a 48V Phantom Power Ch1

• 2.b 48V Phantom Power Ch2

  • This switch allows the enabling of the +48 V Phantom Power to the input. When the LED is lit the 48V is active for its channel.

• 3. a PHASE Ch1

• 3. b PHASE Ch2
  Switch to reverse signal phase

• 4. a PIEZO Ch1

• 4. b PIEZO Ch2

  • It adapts the impedance to the instrument that uses a piezo optimize- zing even the frequencies below 40hz.

• 5. a GAIN CONTROL KNOB Chi

• 5. b GAIN CONTROL KNOB Ch2

  • Sets the input signal amount of the pre-amp

• 6. a BASS KNOB Ch1

• 6. b BASS KNOB Ch2

  • Increases or reduces the bass frequencies of the signal

• 7. a MID-LOW KNOB Ch1

• 7. b MID-LOW KNOB Ch2

  • Increases or reduces the mid-low frequencies of the signal

• 8. a MID-HIGH KNOB Ch1

• 8. b MID-HIGH KNOB Ch2

  • Increases or reduces mid-high frequencies of the signal

• 9. a HIGH KNOB Ch1

• 9. b HIGH KNOB Ch2

  • Increases or reduces the high frequencies of the signal

• 10. a DEEP BUTTON Chi

• 10. b DEEP BUTTON Ch2

  • Gives a more deep sound

• 11. a BRIGHT BUTTON Ch1

• 11. b BRIGHT BUTTON Ch2

  • Gives a bright sound

• 12. a PURE SWITCH Ch1

• 12. b PURE SWITCH Ch2

• Allows bypassing all the equalization filters of the preamplifier. The pure-mode activation is signaled by the LED on the top of the button

• 13. a DI VOLUME CONTROL KNOB Ch1

• 13.6 DI VOLUME CONTROL KNOB Ch2

  • Controls the D.I. volume

• 14. NOTCH FILTER BUTTON

  • When the button is pressed, the Notch Filter activates and the LED on the left lights up.

• 15. FREQ NOTCH KNOB

  • Knob through which you can move the Notch Filter from a frequency of 100Hz to a frequency of 1000Hz. Its selected frequency is lowered by 10dB,

• 16. COMPRESSOR KNOB

  • The compressor determines when the signal will be compressed.

• 17. RATIO SELECTOR

  • The ratio determines how much gain reduction the compressor applies when the signal passes a threshold level.
  • Left / Center / Right = 1:2 / 1:4 / 1:8

• 18. a MASTER KNOB Ch1

• 18. b MASTER KNOB Ch2

  • Controls the overall volume

• 19. an OPERATION LED Ch1

• 19. b OPERATION LED Ch2

  • Blue = The channel is activated.
  • Red = high level of the input signal (clip).
  • Off = The channel is not activated

• 20. MUTE BUTTON

  • Turn off the amplifier output. The activation of this mode turns on the red LED on the left of the button.

• 21. CHANNEL SELECTOR

  • The selector allows you to activate a single channel or both.

• 22. POWER ON/OFF SWITCH

  • Switch on and off the amplifier.

REAR PANEL CONTROLS

• 1. an INPUT XLR/JACK Ch1
• 1. b INPUT XLR/JACK Ch2
  • Input XLR/Jack for your instrument. We suggest using a good-quality cable, to obtain the best audio performance.
• 2.a 48V Phantom Power Ch1
• 2.b 48V Phantom Power Ch2
  • This switch allows the enabling of the +48 V Phantom Power to the input. When the LED is lit the 48V is active for its channel.
• 3. a PHASE Ch1
• 3. b PHASE Ch2
  • Switch to reverse signal phase
• 4. a PIEZO Ch1
• 4. b PIEZO Ch2
  • It adapts the impedance to the instrument that uses a piezo optimize- zing even the frequencies below 40hz.
• 5. a GAIN CONTROL KNOB Ch1
• 5. b GAIN CONTROL KNOB Ch2
  • Sets the input signal amount of the pre-amp
• 6. a BASS KNOB Ch1
• 6. b BASS KNOB Ch2
  • Increases or reduces the bass frequencies of the signal
• 7. a MID-LOW KNOB Ch1
• 7. MID-LOW KNOB Ch2
  • Increases or reduces the mid-low frequencies of the signal
• 8. a MID-HIGH KNOB Ch1
• 8. b MID-HIGH KNOB Ch2
  • Increases or reduces mid-high frequencies of the signal
• 9. a HIGH KNOB Ch1
• 9. b HIGH KNOB Ch2
  • Increases or reduces the high frequencies of the signal
• 10. a DEEP BUTTON Ch1
• 10. b DEEP BUTTON Ch2
  • Gives a more deep sound
• 11. a BRIGHT BUTTON Ch1
• 11. b BRIGHT BUTTON Ch2
  • Gives a bright sound
• 12. a PURE SWITCH Ch1
• 12. b PURE SWITCH Ch2
  • Allows bypassing all the equalization filters of the preamplifier. The pure-mode activation is signaled by the LED on the top of the button.
• 13. a DI VOLUME CONTROL KNOB Ch1
• 13. b DI VOLUME CONTROL KNOB Ch2
  • Controls the D.I. volume
• 14. NOTCH FILTER BUTTON
  • When the button is pressed, the Notch Filter activates and the LED on the left lights up.
• 15. FREQ NOTCH KNOB
  • Knob through which you can move the Notch Filter from a frequency of 100Hz to a frequency of 1000Hz. Its selected frequency is lowered by 10dB.
• 16. COMPRESSOR KNOB
  • The compressor determines when the signal will be compressed.
• 17. RATIO SELECTOR
  • The ratio determines how much gain reduction the compressor applies when the signal passes a threshold level.
  • Left / Center / Right = 1:2 / 1:4 / 1:8
• 18. a MASTER KNOB Ch1
• 18. b MASTER KNOB Ch2
  • Controls the overall volume
• 19. an OPERATION LED Chi
• 19. b OPERATION LED Ch2
  • Blue = The channel is activated.
  • Red = high level of the input signal (clip).
  • Off = The channel is not activated
• 20. MUTE BUTTON
  • Turn off the amplifier output. The activation of this mode turns on the red LED on the left of the button.
• 21. CHANNEL SELECTOR
  • The selector allows you to activate a single channel or both.
• 22. POWER ON/OFF SWITCH
  • Switch on and off the amplifier.

LIMITED WARRANTY

The warranty covers five years. The warranty covers any defects in material or workmanship under normal use during the warranty period. Any shipping cost to/from the repair service center is the customer’s responsibility. In the event of irreparable damage or repeated failure of the same type, the manufacturer may replace the unit, within the term of the original warranty. The warranty does not cover parts that may result in faulty due to:

• Negligence or careless use
• Improper installation and maintenance
• Tampering made by unauthorized personnel
• Damages that might not be related to manufacturing defects.

The manufacturer accepts no responsibility for any damage due to persons, animals, or things, as a consequence of the failure to comply with all the installation requirements and /or use indicated in this user manual. GR Bass is an innovative and dynamic company that has been working for years in the music amplification sector. Lightweight, and portable but powerful, the GR ONE series will surprise you with its quality and incredible power.  The ONE series takes up and perfects the philosophy of PURE SOUND, a fundamental characteristic of GR pro-ducts. A 4-band equalizer will allow you to sculpt the sound according to your needs but that’s not all: you can choose 6 frequencies for the mids, and the deep and bright filters will allow you to add punch and / or definition to the equalization.

CONTACT

• www.grbass.com.
• Via Conchia 38 0805623
• Monopol (6846-55 AM
• +39 080 5129325
• info@grbass.com.

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