O/A/x2 -010 - Uncategorized ALM - Free user manual and instructions

Product Type	Eurorack Module
Brand	ALM
Model	O/A/x2 -010
Category	Dual Channel Attenuverter
Width	4 HP
Depth	32 mm (including power header)
Supply Voltage	+/-12V
Current Draw	~80 mA
Functions	Attenuation, inversion, bipolar DC offset (+/-8V), LED monitoring, mixer (via jumper)
Inputs/Outputs	Two channels, 3.5mm jacks
LED Indication	Red (positive polarity), green (negative polarity), brightness indicates level
Offset Range	+/-8V
Attenuation Range	X1 to X -1 (inversion at full CCW)
Special Feature	Jumper for mixing: normalizes top output to lower input
Protection	Reverse polarity protection
Compatibility	Skiff friendly
Design	Designed and Made in the UK
Warranty	2 years against manufacturing defects
Weight (approx.)	50 g

Frequently Asked Questions - O/A/x2 -010 ALM

What is the O/A/x2 module?

The O/A/x2 is a dual channel attenuverter with each channel including a bipolar voltage offset and LED monitoring. It is designed for editing control signals (e.g., changing phase, level, and DC offset of an LFO) and also works with audio signals for attenuation, inversion, and mixing.

How do I use the attenuverter function?

Patch a signal into the input. The Atten knob controls attenuation: fully CW is unity gain (X1), fully CCW is inversion (X -1). Intermediate positions provide variable attenuation or inversion.

Can I use the O/A/x2 with audio signals?

Yes, the module works with audio signals for attenuation, inversion, and mixing, though it is primarily intended for control voltage processing.

How does the DC offset work?

The Offset knob adds a bipolar DC offset of +8V (full CW) to -8V (full CCW) to the output signal. The offset is independent of the attenuation setting.

What do the LEDs indicate?

The LEDs show the polarity and level of the outgoing signal: red for positive, green for negative. The brightness indicates the signal level.

How do I use the module as a mixer?

On the rear, there is a jumper marked 'MIX'. Closing this jumper normalizes the top section's output to the lower section's input. With no cable in the upper output, the module becomes a simple dual-channel mixer.

What are the power requirements?

The module requires +/-12V supply and draws approximately 80 mA. It has reverse polarity protection.

Is the module skiff friendly?

Yes, with a depth of only 32 mm, it fits easily in skiff cases.

What is the warranty period?

The module is covered by a 2-year warranty against manufacturing or material defects. Physical damage, incorrect power connections, and misuse are not covered.

How can I get support or updates?

Visit the ALM website at http://busycircuits.com for news, downloads, and firmware updates. Follow @busycircuits on Twitter. For queries, email [e-mail].

USER MANUAL O/A/x2 -010 ALM

- Operation Manual -

Introduction 3 ......

Technical Specifications 3 ....

Core Operation 4 ....

Panel Layout....4

General Usage 5

Limited Warranty 6 ....

Support....7

Introduction

‘O/A/x2’ is a dual channel attenuverter with each channel also including a bipolar voltage offset and LED monitoring. The module is primarily intended for fine grain flexible ‘editing’ of control signals (i.e changing the phase, level and DC offset of an LFO signal) but also has uses with audio signals such as attenuation, inversion and mixing.

Feature list;

• Dual channel.
• Attenuate and invert input signals.
  • Additional +/- 8v DC Offset controls.
  • LED indication of outgoing signal polarity and level.
• A jumper setting allows for the module to also be used as a simple mixer.
• Reverse polarity protection.
• Skiff friendly.
• Designed and Made in the UK.

Technical Specifications

• Supply: +/-12V
- Current Draw: \~80ma
- Size: 4 HP
• Depth: 32mm (including power header)

Core Operation

Panel Layout

General Usage

The O/A/x2 is split into two similar sections. For each section A signal patched into an input be both attenuated (Atten knob full CCW is X +1) or inverted (Atten knob full CCW is X -1) and have a DC offset added to it (Off knob full CV \~ +8v) or subtracted (Off knob full CCV \~ -8v). Note the actual offset is not affected by the Atten control.

The LEDs indicate both the level (brightness) and polarity (red +ive, green -ive) of the final outgoing signal.

On the rear of the module is a jumper marked 'MIX' - closing this jumper will normalise the top section output to the lower section as an additional input. Thus with no cable patched into the upper output the module can be used as a simple dual channel mixer.

Limited Warranty

From the date of manufacture this device is guaranteed for a period of 2 years against any manufacturing or material defects. Any such defects will be repaired or replaced at the discretion of ALM. This does not apply to;

• Physical damage arising for mistreating (i,e dropping, submerging etc).
• Damage caused by incorrect power connections.
  • Overexposure to heat or direct sunlight.
• Damage caused by inappropriate or mis-use.
• Use of incorrect or non official firmware

No responsibility is implied or accepted for harm to person or apparatus caused through operation of this product.

By using this product you agree to these terms.

Support

For the latest news, additional info, downloads and firmware updates please visit the ALM website at http://busycircuits.com and follow @busycircuits on twitter.

Please send any questions or comments to [e-mail]

ALM