Darkglass Electronics Microtubes X 900 900W Bass Amplifier User Manual

: September 12, 2024
: Darkglass Electronics

Table of Contents

Microtubes X 900 900W Bass Amplifier
Product Information: Microtubes X 900 Manual
Specifications
Controls
Block Diagram
Product Usage Instructions
Powering On and Connecting
Setting Controls
- Frequently Asked Questions (FAQ)
Q: What should I do if my amp does not turn on?
Q: How can I troubleshoot low sound issues?
Q: How do I address distorted or excessively loud sound?

Microtubes X 900 900W Bass Amplifier

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Product Information: Microtubes X 900 Manual

Specifications

Input Impedance: 1.1 M Minimum
Load Impedance: 2.5 Maximum
Power Output: 900 W RMS @ 4 Ohms, 450 W RMS @
8 Ohms
Power Amp Input Level: 2 Vrms
Power Consumption: Approx. 700 VA
Dimensions: Width: 26.7 cm, Length: 25.5 cm,
Height: 7 cm, Weight: 2.9 kg

Controls

The Microtubes X 900 Manual features the following controls:

Drive: Sets the amount of distortion for the
high pass side.
Mix: Controls the blend between compressed
lows and distorted highs.
LPF (Low Pass Filter): Controls the cut-off
frequency of the low pass filter.
Comp: Controls the amount of compression for
the low band.
Level: Sets the output volume of the X
channel.
Bass, Mids, Treble: Adjustments for specific
frequency ranges.
Master: Sets the overall volume of the
unit.
Mute: Push-button to mute the amplifier.

Block Diagram

The block diagram illustrates the signal flow within the
Microtubes X 900 Manual.

Product Usage Instructions

Powering On and Connecting

Ensure the power cable is connected to a power source within
the voltage range of 100-250 VAC.
If using a footswitch, connect it to the designated port on the
rear panel.
Connect your bass guitar to the input jack using an appropriate
cable.
Connect the amplifier to your speaker cabinet using compatible
speaker cables.

Setting Controls

Adjust the Drive knob to set the level of distortion for the
high pass side.
Tweak the Mix control to blend compressed lows and distorted
highs to your preference.
Use the LPF knob to adjust the cut-off frequency of the low
pass filter for clean signal feeding.
Experiment with the Comp knob to control compression levels for
different frequency bands.
Set output volume using the Level knob and adjust Bass, Mids,
and Treble as needed.
Use the Master knob to control the overall volume output.
Mute the amplifier by pressing the Mute button if needed.

Frequently Asked Questions (FAQ)

Q: What should I do if my amp does not turn on?

A: Check if the power cable is properly connected and there is
power from the wall outlet.

Q: How can I troubleshoot low sound issues?

A: Ensure your speaker cable is working correctly and avoid
using an instrument cable.

Q: How do I address distorted or excessively loud sound?

A: Verify if the passive/active switch on your bass matches the
settings on the amplifier.

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CREATIONS DEALERS SUITE APPAREL

Microtubes X 900 Manual
900W Bass Ampli er

Specs Block Diagram Warning Warranty

Specs
Controls
Input: Use this jack to connect your instrument via a standard ¼” mono cable. Passive/Active: Use this push-button switch to change from passive to active mode. If your bass is active it can have a hotter signal, making the amp distort earlier (feel free to use if such additional distortion is desired). X: Use this push-button to turn on or o the Microtubes X Engine which allows you to compress and distort your bass signal in two separate bands, solidifying the clean low end and distorting the highs to taste from articulate to aggressive. The Microtubes X Engine operates before the EQ section. Clean Comp: Use this push-button switch to activate the compressor circuit for the clean channel. Vol (Clean Comp): Sets the level of the clean channel when the compressor is engaged. HPF (High Pass Filter): Controls the cuto frequency of

the high pass lter which is applied before the clean signal is fed to the distortion circuit. Ranging from 100 Hz (for thicker, fuzzier saturation) to 1 kHz (for ultra-sharp de nition).
Drive: Sets the amount of distortion for the high pass
side.
Mix: Controls the blend between the compressed lows
and the distorted highs.
LPF (Low Pass Filter): Controls the cut-o frequency of
the low pass lter which is applied before the clean signal is fed to the compression circuit. Ranging from 50 Hz (for only sub-bass) to 500 Hz (to preserve some clean mids).
Comp: Controls the amount of compression for the low
band when X is activated. Both threshold and makeup gain are controlled to maintain a constant level. This control is also used to control the amount of compression when the compressor is enabled for the clean signal. The clean comp is full-range.
Level: Sets the output volume of the X channel. Bass: +-12 dB @ 80 Hz. Mids: +-12 dB at 250, 500, 1.5k and 3 kHz. Treble: +-12 dB @ 3 kHz. Master: Sets the overall volume of the unit. Mute: Use this push-button to mute the ampli er.
Technical Specifications
Input Impedance: 1.1 M Minimum Load Impedance: 2.5 Maximum Power Output: 900 W RMS @ 4 (1 kHz full
blast, 2 min. max) 20% THD, 450 W RMS @ 8
Power Amp Input (Return) Impedance: 100 k Power Amp Input (Return) Level: 2 Vrms (max before 1%
THD)
Pre-Amp Output (Send) Impedance: 1 k Pre-Amp Output (Send) Level (max): 2.2 Vrms (max
before 1% THD)
Maximum Power Consumption: approx. 700 VA

Cooling: Forced-air cooled
AC Input Power: 100-250 VAC AC Frequency: 50/60 Hz
Dimensions
Width: 26.7 cm / 10.5 Length: 25.5 cm/ 10 Height: 7 cm / 2.75 Weight: 2.9 kg / 6.39 lb
Block Diagram
Warning
No user serviceable parts inside the ampli er. Do not open the amp. Never use the amp in a high moisture environment or near liquids.

The Microtubes X 900 can deliver more than 115 dB of power. Exposure to this level of sound can damage your hearing. Use proper hearing protection if you will be exposed. The Microtubes X 900 can deliver more than 900 W RMS with a 4 load. Be sure that your speaker cabinet is able to deliver that power. Do not cover the vent holes. The fan and vent holes are part of the cooling system of the amp. Covering the vent holes can damage the power amp by overheating it. Don’t use an instrument cable as a speaker cable. An instrument cable is not designed to deliver the type of power signals sent from the ampli er to the speaker.
Troubleshooting
The button controls do not react: check if the footswitch is connected. If you do not want to use the footswitch, you have to unplug the cable from the rear panel of the amp. The amp does not turn on: check if the power cable is connected and if you have power from the wall. The sound is low: check your speaker cable. Never use an instrument cable. The sound is distorted or too high: check if the passive/active switch matches your bass.
Warranty
Please register for your warranty at http://mypedal.darkglass.com. The Microtubes X 900 is under warranty to the original owner for a period of two years against manufacturing defects in the country where the product was originally purchased.
If you experience a problem with the unit, please contact support@darkglass.com to receive a Return Authorization number or for information on the nearest authorized repair

center. A copy of your original receipt must be included with all warranty repairs. You are responsible for all shipping charges. The unit must be shipped to us freight prepaid. We will return the unit freight collect. Darkglass Electronics Oy is not responsible for shipping damage either to or from our service center. Claims must be led with the carrier. Darkglass® and Microtubes® are registered trademarks of Darkglass Electronics Oy.
PRIVACY POLICY CAREERS

DARKGLASS is a registered trademark in the U.S., number 4,616,801, owned by Darkglass Electronics Oy. Designed by Revolve Studio