AE1 ACTIVE

Introduction

Thank you for purchasing the Acoustic Energy AE1 Active loudspeaker. The 'AE1' designation signifies more than just a model number for Acoustic Energy; it represents a lineage dating back to their first speaker. The AE1 Active is the latest iteration, carrying the name forward in a new direction while retaining the esteemed traits and qualities of its predecessors.

This manual serves as a comprehensive guide to the speakers, their supplied accessories, setup advice for optimal performance, and suggestions for resolving any potential issues. Please retain this document and all original packaging for future reference.

Contents of Packaging

The AE1 Active loudspeaker box contains the following items:

• 2 x AE1 Active loudspeakers
• 2 x Speaker grilles
• 2 x IEC mains leads for mains connection
• 1 pair of RCA interconnects (3 metre) for audio connection
• 8 x Isolating foam feet
• 1 x Instruction manual
• 1 x Certificate of authenticity

If any of these items are not present, please contact your dealer immediately.

What is an Active Speaker?

The AE1 Active distinguishes itself from previous AE1 models by being an active design. In an active speaker, the amplification that powers the drivers is integrated after the crossover network. This means only the frequencies relevant to each specific driver are amplified by a dedicated amplifier, precisely configured for that task. This integrated approach allows for a balanced optimization of amplifier, crossover, and driver at the design stage, leading to higher performance compared to a passive speaker of similar size and design.

The AE1 Active consolidates the amplifier and drivers within a single enclosure, offering benefits in space efficiency and packaging. The drivers themselves have received significant attention. The AE1 Active features an all-new Wide Dispersion Technology (WDT) tweeter. This incorporates a waveguide into the tweeter surround, enhancing its interaction with the room acoustics. This design widens high-frequency coverage while narrowing lower frequencies, a principle known as constant directivity that Acoustic Energy has refined over many years. The result is more direct sound reaching the listener, reducing reflections and improving efficiency and distortion.

The mid-bass driver builds upon Acoustic Energy's extensive experience with metal drivers, delivering impactful sound without compromising the transient speed and tonal accuracy essential for high-performance loudspeakers. The bass response is further enhanced by the latest version of the slotted bass port, a design used across several Acoustic Energy speakers. This slotted profile provides a large surface area without consuming excessive space and minimizes audible air turbulence.

Rear Connections and Controls

The rear panel of the AE1 Active houses the input connections and control adjustments.

1. Inputs

The AE1 Active accepts audio signals via either an RCA or Balanced XLR input. While RCA cables are supplied for general use, XLR connections are technically superior and recommended for longer cable runs due to their better suitability for long transmission lengths. Ensure any XLR cable used matches the AE1 Active's rear panel wiring. Do not connect both inputs simultaneously, as this may damage the loudspeaker.

2. Bass and Treble Controls

These adjustable controls allow fine-tuning of the speaker's response to suit your room. The bass control adjusts between -2dB and +2dB, useful for managing bass response near walls. The treble control, also adjustable between -2dB and +2dB, helps tailor the output based on room furnishings, allowing for adjustments in rooms with minimal or excessive acoustic treatment. Experimentation is encouraged, as these trim controls do not negatively affect sound quality.

3. Volume Control

The volume control adjusts the output level from zero to maximum. It serves two purposes: setting the overall level when the source device lacks volume control, or limiting the AE1 Active's output relative to the connected device's volume, ensuring preferred listening levels or preventing damage.

4. Mains Voltage Switch

This switch allows the speaker's power supply to operate on either 100-120V or 220-240V mains supply. It is protected by a cover to prevent accidental adjustment. Crucially, any adjustment of this switch MUST be performed with the speaker disconnected from the mains power.

5. Mains Input

This is the connection for the AC power cable. Always use a correctly certified IEC mains cable.

6. Power Switch

This two-position switch completely powers the AE1 Active off. It is recommended to switch the speakers off when leaving them inactive for extended periods.

Diagram Description: The rear panel features a Signal Input section with connections for Balanced XLR (PIN 1 = GROUND, PIN 2 = + INPUT, PIN 3 = - INPUT) and RCA (phono) input. Adjacent are controls for Bass (adjustable -2 to +2 dB), Treble (adjustable -2 to +2 dB), and Volume (MIN to MAX). Further along are the Mains Input socket, a Mains Voltage Switch (with a protective cover), and the Power Switch. A white power LED is located in the bottom of the bass driver surround.

[Caution: Risk of Electric Shock. Do Not Open.] [Warning: Shock Hazard - Do Not Open.] [Avis: Risque de choc electrique - Ne pas ouvrir.] [Caution: To reduce the risk of fire, replace with only the same type and rating of fuse.]

Model: AE1 ACTIVE
Description: AMPLIFIED 2-WAY LOUDSPEAKER SYSTEM FEATURING 2 X 50 WATT (RMS) CLASS A/B AMPLIFIERS PER LOUDSPEAKER
Designed, Engineered, Tested & Quality Control Checked by: ACOUSTIC ENERGY LTD IN CIRENCESTER, ENGLAND
Assembled in PRC
Serial Number: [Serial Number Placeholder]
[CE certification logo]

Connection and Setup

The AE1 Active is designed to receive an audio output directly from a source device. While using equipment with a fixed output and adjusting volume on the speakers is possible, optimal results are achieved with a variable level output, commonly known as a preamplifier output. Many modern source devices include such outputs, offering a wide range of connection possibilities. A dedicated preamplifier can also be used to manage multiple source components.

Each AE1 Active speaker requires both mains power and an audio signal from a source device. Connections can be made via RCA or XLR inputs, but not simultaneously. A single audio connection from the source equipment or preamplifier should be made to both AE1 Active speakers. There is no provision for looping the signal between speakers; they must not be connected directly to each other.

Once power and signal are connected, audio playback should be possible. If using a preamplifier output, system level can be controlled by the preamplifier's volume control. In this scenario, set the AE1 Active's rear volume controls to maximum. If this results in excessively loud levels, the rear volume controls can be used for finer control.

The AE1 Active is designed for excellent performance in various locations and can be placed on shelves or furniture. For the best results, Acoustic Energy recommends using dedicated speaker stands. Stands help isolate the speakers and position them at the optimal listening height, typically with the tweeter at ear level when seated. The supplied isolating foam feet protect surfaces from damage and vibration and are best omitted when using speaker stands.

Experiment with speaker placement and toe-in (angling the speakers inwards) to create a triangle with the listening position for optimal sound direction.

The AE1 Active's bass and treble controls can be adjusted to compensate for room acoustics and speaker placement. The grille is acoustically transparent and designed to protect the drivers; it is recommended to leave it in place in most domestic situations.

Troubleshooting

The speaker will not power on

• Check for available power to the speaker.
• Ensure the rear panel switch is set to ON.
• Verify that the white power LED is lit (located in the bottom of the bass driver surround).

There is no sound

• Confirm power is supplied to the speakers and they are switched on.
• Check that the source equipment is powered on.
• Ensure an audio connection exists from the preamplifier output of the source equipment to both AE1 Active speakers.
• Verify that the source equipment is not muted.

The sound is intermittent or distorted

• Check all audio connections between the source equipment and the speakers.
• Ensure source equipment levels are not too high, which can cause cut-outs or distortion. The system volume can be capped using the rear panel controls.

Volume levels are too low

• Check that the volume controls on the rear panel are not set to a low level.
• Verify that the source equipment is not set to a low gain mode and that connections are secure between the source and the AE1 Active speakers.

If only one speaker exhibits a problem, try swapping it with the other speaker. This helps determine if the issue follows the speaker or remains on the same side, aiding in identifying the faulty component.

Warranty

Your Acoustic Energy AE1 Active speaker is guaranteed against defects in materials, manufacture, and workmanship for three years from the date of purchase. Please retain all original packaging materials for potential future use.

Registering your Acoustic Energy loudspeakers online at acoustic-energy.co.uk extends the guarantee to five years, free of charge.

Under this warranty, Acoustic Energy will repair or, at its discretion, replace faulty component(s) without charge for parts and labour. This warranty does not cover consequential loss or damage and specifically excludes fair wear and tear, accident, misuse, or unauthorised modification.

This warranty is applicable in the United Kingdom only and does not affect the customer's legal rights. Claims and enquiries for AE products purchased outside the UK should be directed to local importers or distributors. For warranty claims, contact your dealer or point of purchase first.

AE1 Active Specification

NOTES:
¹ Measured at 1m using pink-weighted MLS noise.
² Measured at 1m using pink-weighted MLS noise, +/-6dB limits.
³ Measured at 1m using pink-weighted MLS noise, +/-6dB limits.
⁴ Measured using a toneburst signal.
⁵ Measured using a band limited sine sweep.

All specifications and images are correct at the time of going to press. Acoustic Energy reserves the right to change specifications without notice.