Envelope X3 V2 - Synthesizer ACL - Free user manual and instructions

Brand	ACL
Model	Envelope X3 V2
Product Type	Eurorack Synthesizer Module
Category	Envelope Generator
Width	21 HP (106.68 mm)
Depth	22 mm
Power Consumption	36 mA on +12V / 23 mA on -12V
Power Supply	Eurorack system power supply (+12V)
Envelope Types	3 independent ADSR envelopes
Time Ranges	Short and Long (switchable)
Outputs	Positive (EG/POS) and inverted (EG/NEG) for each envelope
Gate Inputs	3 inputs with normalization (Gate 1 normalized to Gates 2 and 3)
Controls	Attack, Decay, Sustain, Release knobs per envelope
Warranty	1 year from date of purchase
Accessories Included	Eurorack power cable (1), Mounting screws (4)
Installation	Turn off power before connecting; connect power cable with red stripe on -12V side; reverse-polarity protected
Maintenance	Wipe with a dry cloth; avoid liquids and solvents
Safety	Disconnect power before installation or removal; do not touch terminals while powered
Repair and Service	Contact dealer or ACL support at [e-mail]
Compliance	Designed for Eurorack systems

Frequently Asked Questions - Envelope X3 V2 ACL

How can I control all three envelopes with a single gate signal?

Thanks to normalization, Gate 1 is internally connected to Gate 2 and Gate 3. If you only plug a gate into Gate 1, the signal is duplicated to all three envelopes, allowing you to control them simultaneously without extra cables.

What is the difference between Short and Long time ranges?

The SHORT/LONG switch selects the overall speed of the envelope. Short gives faster attack/decay/release times, while Long provides slower, more extended envelopes.

Can I use individual gate signals for each envelope?

Yes, by plugging separate gate signals into Gate 1, Gate 2, and Gate 3 inputs, the normalization is broken and each envelope responds independently to its respective gate.

What does the inverted output (EG/NEG) do?

The EG/NEG output provides an inverted version of the envelope. When the positive output rises, the inverted output falls, and vice versa. This is useful for creating complementary modulation.

How do I connect the power cable?

Ensure the Eurorack system is off and unplugged. Connect the 16-pin connector to the power bus with the red stripe aligned to the -12V pin. Connect the 10-pin connector to the module's shrouded header; it is keyed to prevent reverse insertion.

What are the power requirements of the Envelope X3 V2?

It consumes 36mA on the +12V rail and 23mA on the -12V rail. Use a standard Eurorack power supply.

What is the warranty period and what does it cover?

The warranty is 1 year from the date of purchase. It covers faults in use; repair or replacement is free. It does not cover damage from incorrect power, modifications, natural disasters, or improper use.

Can I use this module with other modular formats?

The Envelope X3 V2 is designed specifically for Eurorack systems with a +12V power supply. It may not be compatible with other formats without adapters.

How should I clean the module?

Disconnect power. Use a soft, dry cloth to wipe the front panel and knobs. Avoid liquids, solvents, or abrasive cleaners that could damage the finish or electronics.

What should I do if the module stops working?

First, check your power connections and ensure the module is properly seated on the bus board. If the issue persists, consult the dealer or contact ACL support at [e-mail].

USER MANUAL Envelope X3 V2 ACL

Musical Instruments Manufacture

ENVELOPE X3

User's Manual

Eurorack Synthesizer Modules

TABLE OF CONTENTS

1. INTRODUCTION
   2.WARRANTY
   3.INSTALLATION
2. FUNCTION OF PANEL COMPONENTS
   5.CHARACTERISTICS
   6.SPECIFICATIONS

1. INTRODUCTION

Audiophile Circuits League. -ENVELOPE X3 contains 3 very fast independent ADSR-Envelopes.

There are 2 different time ranges that are switchable. Every Envelope has got an inverted output.

The Gate-Inputs 2 and 3 are normalized to Gate 1.

(For details about normalization, see section 5. CHARACTERISTICS)

2. WARRANTY

In the event of a fault in use, we will repair or replace it free of charge under the warranty terms stated below. The warranty period is valid for one year from the day of purchase. If repair is necessary, please ask the dealer you purchased it from.

We can not guarantee the incidental damage caused by the breakdown or damage that occurred during use of this product. In addition, warranty will expire in the following cases:

• Failure / damage caused by use of unspecified power supply / accessories.
• Failure / damage caused by incorrect connection or use of power cable.
• Failure / damage caused by improper handling method.
• Failure / damage caused by natural disasters (fire, flooding etc.) and pollution.
• When the cause of breakdown or damage lies in equipment other than this product.
• Failure / damage caused by improper modification, adjustment, parts replacement.
• Failure / damage when used under particularly severe conditions, when loaned/rental/hired out to 3rd party.

Is it a malfunction?

Please read the user's manual carefully and check again. If you think that there is still a problem, please consult the dealer you purchased from or contact us (English).

[e-mail]

3. INSTALLATION

△WARNING

*Always turn the Eurorack unit off and unplug the power cord before plugging the Eurorack power cable.
*When attaching the Eurorack power cable, please be careful not to touch the terminal part.

Connect to the Eurorack's system power supply (+12V) using the supplied Eurorack power cable.

Connect the 16-pin connector to the Eurorack power connector. Connect the red mark on the power cable so that it matches the pin on the (-12 V) side of the power connector.

Connect the 10 pin connector to the shrouded header on the back of the module. The header is protected against reverse-plugging.

FIG.1 : Eurorack power cable

4. FUNCTION OF PANEL COMPONENTS

FIG.2 : Front Panel

① "ATTACK" knob

Adjust the attack time.

② "DECAY" knob

Adjust the decay time.

③ "SUSTAIN" knob

Adjust the sustain time.

④ "RELEASE" knob

Adjust the release time.

⑤ "GATE" input jack

Inputs a GATE signal. When using only GATE 1, it is possible to control EG 1, 2, 3 using one GATE signal without inserting cables into GATE 2, 3 (Normalize). (For details, see section 5.CHARACTERISTIC)

⑥ "EG/POS" output jack

It outputs standard envelope.

⑦ "EG/NEG" output jack

It outputs inverted envelope.

⑧ "SHORT/LONG" switch

It is possible to select the operation speed of the envelope from two ranges.

5. CHARACTERISTIC

GATE input 1 is normalized (internally connected) to GATE 2, 3. "Normalization" means that if you are not using GATE 2 and 3, the input to GATE 1 will be automatically duplicated to GATE 2 and 3. In other words, you can control three ADSR from one cable input(See FIG. 3). This feature economizes the need to duplicate signals using external multiple modules.

FIG.3: When using only GATE 1 input (Normalized)

Conversely, when inputs of GATE 1, 2 and 3 are individually plugged in, it is possible to control EG 1, 2, 3 by an independent GATE signal (See FIG. 4).

FIG.4: When using GATE 1,2,3 inputs (not Normalized)

FIG.5. When using GATE 1&2 Input, GATE 3 Input is still Normalized to Input 1.

6. SPECIFICATIONS

Power

Eurorack system power supply

Width

21 HP

Depth

22 mm

Power consumption

36mA on +12V / 23mA on -12V

Accessories

• Eurorack power cable x1
• Mounting screws x4